Alert archive / California / Excessive Heat Warnings in 2021

Excessive Heat Warning 5, NWS San Diego, CA

August 2, 2021Riverside County, San Bernardino County, San Diego County, California

NWS San Diego, CA issued this excessive heat warning at Aug 2, 2021, 11:38 AM PDT for Riverside County, San Bernardino County, San Diego County, California. It took effect at Aug 3, 2021, 10:00 AM PDT. It was in force for 58 hr. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Aug 2, 2021, 11:38 AM PDT (18:38 UTC)
In effect from
Aug 3, 2021, 10:00 AM PDT
Expired
Aug 5, 2021, 8:00 PM PDT
In force
58 hr
Issued by
NWS San Diego, CA

Counties Riverside County, CA, San Bernardino County, CA, San Diego County, CA

The radar

The Santa Ana Mts radar (KSOX), 122 km from the middle of the area, began a volume at 18:37 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Aug 3, 1:04 PM PDTWILDFIREWildomar, CABAXTER FIRE WAS A VEGETATION FIRE IN WILDOMAR NEAR BAXTER (WILDOMAR TRAIL) ROAD AND INTESTATE 15. THREE ACRES BURNED. EVACUATION ORDERS FOR AREAS SOUTH OF WILDOMAR TRAIL WERE LIFTED. NO STRUCTURES BURNED.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

San Diego, CA (KNKX), launched 12:00Z, 6.6 hours before the alert went out and 145 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, San Diego, CA at 12:00Z on 2021-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, San Diego, CA at 12:00Z on 2021-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -34 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2973 m above ground
0-6 km bulk shear
3 kt
0-1 km storm-relative helicity
-34 m²/s²
0-3 km storm-relative helicity
0 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

859 
WWUS76 KSGX 021838
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service SAN DIEGO CA
1138 AM PDT Mon Aug 2 2021

CAZ060-030500-
/O.UPG.KSGX.EH.A.0005.210803T1700Z-210805T0300Z/
/O.NEW.KSGX.EH.W.0005.210803T1700Z-210805T0300Z/
Apple and Lucerne Valleys-
Including the cities of Victorville, Hesperia, and Apple Valley
1138 AM PDT Mon Aug 2 2021

...EXCESSIVE HEAT WARNING IN EFFECT FROM 10 AM TUESDAY TO 8 PM
PDT WEDNESDAY...

* WHAT...Dangerously hot conditions with high temperatures 102 to
  108 expected. Warm overnight lows between 70 and 75 expected.

* WHERE...Apple and Lucerne Valleys.

* WHEN...From 10 AM Tuesday to 8 PM PDT Wednesday.

* IMPACTS...Extreme heat will significantly increase the 
  potential for heat related illnesses, particularly for those 
  working or participating in outdoor activities.

* ADDITIONAL DETAILS...Warm nighttime temperatures will limit heat
  relief, acting to increase heat stress for those without
  adequate access to cooling.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ065-030500-
/O.UPG.KSGX.EH.A.0005.210803T1700Z-210805T0300Z/
/O.NEW.KSGX.EH.W.0005.210803T1700Z-210805T0300Z/
San Gorgonio Pass Near Banning-
Including the cities of Banning and Desert Hot Springs
1138 AM PDT Mon Aug 2 2021

...EXCESSIVE HEAT WARNING IN EFFECT FROM 10 AM TUESDAY TO 8 PM
PDT WEDNESDAY...

* WHAT...Dangerously hot conditions with high temperatures 105 to
  115 expected. Warm overnight lows between 77 and 90 expected.

* WHERE...San Gorgonio Pass Near Banning, including North Palm
  Springs and Desert Hot Springs.

* WHEN...From 10 AM Tuesday to 8 PM PDT Wednesday.

* IMPACTS...Extreme heat will significantly increase the 
  potential for heat related illnesses, particularly for those 
  working or participating in outdoor activities.

* ADDITIONAL DETAILS...Very warm nighttime temperatures will 
  limit heat relief, acting to increase heat stress for those 
  without adequate access to cooling.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ061-062-030500-
/O.UPG.KSGX.EH.A.0005.210803T1700Z-210805T0300Z/
/O.NEW.KSGX.EH.W.0005.210803T1700Z-210805T0300Z/
Coachella Valley-San Diego County Deserts-
Including the cities of Indio, Palm Springs, Cathedral City, 
Palm Desert, Palm Desert Country, La Quinta, Coachella, 
and Borrego Springs
1138 AM PDT Mon Aug 2 2021

...EXCESSIVE HEAT WARNING IN EFFECT FROM 10 AM TUESDAY TO 8 PM
PDT WEDNESDAY...

* WHAT...Dangerously hot conditions with high temperatures 115 to
  120 expected. Very warm overnight lows between 85 and 90
  expected.

* WHERE...Coachella Valley and San Diego County Deserts.

* WHEN...From 10 AM Tuesday to 8 PM PDT Wednesday.

* IMPACTS...Extreme heat will significantly increase the 
  potential for heat related illnesses, particularly for those 
  working or participating in outdoor activities.

* ADDITIONAL DETAILS...Very warm nighttime temperatures will 
  limit heat relief, acting to increase heat stress for those 
  without adequate access to cooling.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ050-030500-
/O.EXA.KSGX.HT.Y.0004.000000T0000Z-210805T0300Z/
San Diego County Valleys-
Including the cities of Escondido, El Cajon, San Marcos, La Mesa,
Santee, and Poway
1138 AM PDT Mon Aug 2 2021

...HEAT ADVISORY IN EFFECT UNTIL 8 PM PDT WEDNESDAY...

* WHAT...High temperatures between 90 and 100 degrees expected.

* WHERE...San Diego County Valleys.

* WHEN...Until 8 PM PDT Wednesday. Hottest Monday and Tuesday.

* IMPACTS...Hot temperatures will significantly increase the 
  potential for heat related illnesses, particularly for those 
  working or participating in outdoor activities.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ048-030500-
/O.CON.KSGX.HT.Y.0004.000000T0000Z-210805T0300Z/
San Bernardino and Riverside County Valleys-The Inland Empire-
Including the cities of Riverside, San Bernardino, Ontario, 
Moreno Valley, Fontana, Rancho Cucamonga, and Corona
1138 AM PDT Mon Aug 2 2021

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT WEDNESDAY...

* WHAT...High temperatures between 98 and 107 degrees expected.

* WHERE...San Bernardino and Riverside County Valleys-The Inland 
  Empire.

* WHEN...Until 8 PM PDT Wednesday.

* IMPACTS...Hot temperatures will significantly increase the 
  potential for heat related illnesses, particularly for those 
  working or participating in outdoor activities.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ055-056-058-030500-
/O.CON.KSGX.HT.Y.0004.000000T0000Z-210805T0300Z/
San Bernardino County Mountains-Riverside County Mountains-
San Diego County Mountains-
Including the cities of Crestline, Lake Arrowhead, 
Idyllwild-Pine Cove, Julian, and Pine Valley
1138 AM PDT Mon Aug 2 2021

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT WEDNESDAY...

* WHAT...High temperatures between 88 and 100 degrees.

* WHERE...Riverside County Mountains, San Bernardino County
  Mountains and San Diego County Mountains below 6000 feet.

* WHEN...Until 8 PM PDT Wednesday.

* IMPACTS...Hot temperatures will significantly increase the 
  potential for heat related illnesses, particularly for those 
  working or participating in outdoor activities.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

Rodriguez

For more information from the National Weather Service visit
http://weather.gov/sandiego
10 follow-up statements
411 
WWUS76 KSGX 030406
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service SAN DIEGO CA
906 PM PDT Mon Aug 2 2021

CAZ060-031215-
/O.CON.KSGX.EH.W.0005.210803T1700Z-210805T0300Z/
Apple and Lucerne Valleys-
Including the cities of Victorville, Hesperia, and Apple Valley
906 PM PDT Mon Aug 2 2021

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 10 AM TUESDAY TO
8 PM PDT WEDNESDAY...

* WHAT...Dangerously hot conditions with high temperatures 102 
  to 108 expected. Warm overnight lows between 70 and 75 
  expected.

* WHERE...Apple and Lucerne Valleys.

* WHEN...From 10 AM Tuesday to 8 PM PDT Wednesday.

* IMPACTS...Extreme heat will significantly increase the 
  potential for heat related illnesses, particularly for those 
  working or participating in outdoor activities.

* ADDITIONAL DETAILS...Warm nighttime temperatures will limit heat
  relief, acting to increase heat stress for those without
  adequate access to cooling..

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ065-031215-
/O.CON.KSGX.EH.W.0005.210803T1700Z-210805T0300Z/
San Gorgonio Pass Near Banning-
Including the cities of Banning and Desert Hot Springs
906 PM PDT Mon Aug 2 2021

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 10 AM TUESDAY TO
8 PM PDT WEDNESDAY...

* WHAT...Dangerously hot conditions with high temperatures 105 
  to 115 expected. Warm overnight lows between 77 and 90 
  expected.

* WHERE...San Gorgonio Pass Near Banning, including North Palm 
  Springs and Desert Hot Springs.

* WHEN...From 10 AM Tuesday to 8 PM PDT Wednesday.

* IMPACTS...Extreme heat will significantly increase the 
  potential for heat related illnesses, particularly for those 
  working or participating in outdoor activities.

* ADDITIONAL DETAILS...Very warm nighttime temperatures will 
  limit heat relief, acting to increase heat stress for those 
  without adequate access to cooling.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ061-062-031215-
/O.CON.KSGX.EH.W.0005.210803T1700Z-210805T0300Z/
Coachella Valley-San Diego County Deserts-
Including the cities of Indio, Palm Springs, Cathedral City, 
Palm Desert, Palm Desert Country, La Quinta, Coachella, 
and Borrego Springs
906 PM PDT Mon Aug 2 2021

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 10 AM TUESDAY TO
8 PM PDT WEDNESDAY...

* WHAT...Dangerously hot conditions with high temperatures 115 
  to 120 expected. Very warm overnight lows between 85 and 90 
  expected.

* WHERE...Coachella Valley and San Diego County Deserts.

* WHEN...From 10 AM Tuesday to 8 PM PDT Wednesday.

* IMPACTS...Extreme heat will significantly increase the 
  potential for heat related illnesses, particularly for those 
  working or participating in outdoor activities.

* ADDITIONAL DETAILS...Very warm nighttime temperatures will 
  limit heat relief, acting to increase heat stress for those 
  without adequate access to cooling.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ048-031215-
/O.CON.KSGX.HT.Y.0004.000000T0000Z-210805T0300Z/
San Bernardino and Riverside County Valleys-The Inland Empire-
Including the cities of Riverside, San Bernardino, Ontario, 
Moreno Valley, Fontana, Rancho Cucamonga, and Corona
906 PM PDT Mon Aug 2 2021

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT WEDNESDAY...

* WHAT...High temperatures between 98 and 107 degrees expected.

* WHERE...San Bernardino and Riverside County Valleys-The Inland 
  Empire.

* WHEN...Until 8 PM PDT Wednesday.

* IMPACTS...Hot temperatures will significantly increase the 
  potential for heat related illnesses, particularly for those 
  working or participating in outdoor activities.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ050-031215-
/O.CON.KSGX.HT.Y.0004.000000T0000Z-210805T0300Z/
San Diego County Valleys-
Including the cities of Escondido, El Cajon, San Marcos, La Mesa,
Santee, and Poway
906 PM PDT Mon Aug 2 2021

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT WEDNESDAY...

* WHAT...High temperatures between 90 and 100 degrees expected.

* WHERE...San Diego County Valleys.

* WHEN...Until 8 PM PDT Wednesday. Hottest Monday and Tuesday.

* IMPACTS...Hot temperatures will significantly increase the 
  potential for heat related illnesses, particularly for those 
  working or participating in outdoor activities.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ055-056-058-031215-
/O.CON.KSGX.HT.Y.0004.000000T0000Z-210805T0300Z/
San Bernardino County Mountains-Riverside County Mountains-
San Diego County Mountains-
Including the cities of Crestline, Lake Arrowhead, 
Idyllwild-Pine Cove, Julian, and Pine Valley
906 PM PDT Mon Aug 2 2021

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT WEDNESDAY...

* WHAT...High temperatures between 88 and 100 degrees.

* WHERE...Riverside County Mountains, San Bernardino County 
  Mountains and San Diego County Mountains below 6000 feet.

* WHEN...Until 8 PM PDT Wednesday.

* IMPACTS...Hot temperatures will significantly increase the 
  potential for heat related illnesses, particularly for those 
  working or participating in outdoor activities.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

For more information from the National Weather Service visit
http://weather.gov/sandiego
522 
WWUS76 KSGX 030942
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service SAN DIEGO CA
242 AM PDT Tue Aug 3 2021

CAZ060-032315-
/O.CON.KSGX.EH.W.0005.210803T1700Z-210805T0300Z/
Apple and Lucerne Valleys-
Including the cities of Victorville, Hesperia, and Apple Valley
242 AM PDT Tue Aug 3 2021

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 10 AM THIS
MORNING TO 8 PM PDT WEDNESDAY...

* WHAT...Dangerously hot conditions with high temperatures of 102
  to 112 expected.

* WHERE...Apple and Lucerne Valleys.

* WHEN...From 10 AM this morning to 8 PM PDT Wednesday.

* IMPACTS...Extreme heat will significantly increase the 
  potential for heat related illnesses, particularly for those 
  working or participating in outdoor activities.

* ADDITIONAL DETAILS...Warm nighttime temperatures will limit heat
  relief, acting to increase heat stress for those without
  adequate access to cooling.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ065-032315-
/O.CON.KSGX.EH.W.0005.210803T1700Z-210805T0300Z/
San Gorgonio Pass Near Banning-
Including the cities of Banning and Desert Hot Springs
242 AM PDT Tue Aug 3 2021

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 10 AM THIS
MORNING TO 8 PM PDT WEDNESDAY...

* WHAT...Dangerously hot conditions with high temperatures of 108
  to 118 expected.

* WHERE...San Gorgonio Pass Near Banning.

* WHEN...From 10 AM this morning to 8 PM PDT Wednesday.

* IMPACTS...Extreme heat will significantly increase the 
  potential for heat related illnesses, particularly for those 
  working or participating in outdoor activities.

* ADDITIONAL DETAILS...Very warm nighttime temperatures will 
  limit heat relief, acting to increase heat stress for those 
  without adequate access to cooling.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ061-062-032315-
/O.CON.KSGX.EH.W.0005.210803T1700Z-210805T0300Z/
Coachella Valley-San Diego County Deserts-
Including the cities of Indio, Palm Springs, Cathedral City, 
Palm Desert, Palm Desert Country, La Quinta, Coachella, 
and Borrego Springs
242 AM PDT Tue Aug 3 2021

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 10 AM THIS
MORNING TO 8 PM PDT WEDNESDAY...

* WHAT...Dangerously hot conditions with high temperatures of 114
  to 122 expected.

* WHERE...San Diego County Deserts and Coachella Valley.

* WHEN...From 10 AM this morning to 8 PM PDT Wednesday.

* IMPACTS...Extreme heat will significantly increase the 
  potential for heat related illnesses, particularly for those 
  working or participating in outdoor activities.

* ADDITIONAL DETAILS...Very warm nighttime temperatures will 
  limit heat relief, acting to increase heat stress for those 
  without adequate access to cooling.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ048-032315-
/O.CON.KSGX.HT.Y.0004.000000T0000Z-210805T0300Z/
San Bernardino and Riverside County Valleys-The Inland Empire-
Including the cities of Riverside, San Bernardino, Ontario, 
Moreno Valley, Fontana, Rancho Cucamonga, and Corona
242 AM PDT Tue Aug 3 2021

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT WEDNESDAY...

* WHAT...High temperatures of 100 to 110 expected.

* WHERE...San Bernardino and Riverside County Valleys-The Inland 
  Empire.

* WHEN...Until 8 PM PDT Wednesday.

* IMPACTS...Hot temperatures may cause heat illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ050-032315-
/O.CON.KSGX.HT.Y.0004.000000T0000Z-210805T0300Z/
San Diego County Valleys-
Including the cities of Escondido, El Cajon, San Marcos, La Mesa,
Santee, and Poway
242 AM PDT Tue Aug 3 2021

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT WEDNESDAY...

* WHAT...High temperatures in the inland valleys of 95 to 105
  expected.

* WHERE...San Diego County Valleys.

* WHEN...Until 8 PM PDT Wednesday.

* IMPACTS...Hot temperatures may cause heat illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ055-056-058-032315-
/O.CON.KSGX.HT.Y.0004.000000T0000Z-210805T0300Z/
San Bernardino County Mountains-Riverside County Mountains-
San Diego County Mountains-
Including the cities of Crestline, Lake Arrowhead, 
Idyllwild-Pine Cove, Julian, and Pine Valley
242 AM PDT Tue Aug 3 2021

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT WEDNESDAY BELOW
6000 FEET...

* WHAT...High temperatures in the mid 90s to 105 below 6000 feet
  expected.

* WHERE...Riverside County Mountains, San Bernardino County
  Mountains and San Diego County Mountains below 6000 feet.

* WHEN...Until 8 PM PDT Wednesday.

* IMPACTS...Hot temperatures may cause heat illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

For more information from the National Weather Service visit
http://weather.gov/sandiego

17
957 
WWUS76 KSGX 032004
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service SAN DIEGO CA
104 PM PDT Tue Aug 3 2021

CAZ060-040415-
/O.EXT.KSGX.EH.W.0005.000000T0000Z-210806T0300Z/
Apple and Lucerne Valleys-
Including the cities of Victorville, Hesperia, and Apple Valley
104 PM PDT Tue Aug 3 2021

...EXCESSIVE HEAT WARNING NOW IN EFFECT UNTIL 8 PM PDT THURSDAY...

* WHAT...Dangerously hot conditions with high temperatures of 105
  to 110 expected.

* WHERE...Apple and Lucerne Valleys.

* WHEN...Until 8 PM PDT Thursday.

* IMPACTS...Extreme heat will significantly increase the 
  potential for heat related illnesses, particularly for those 
  working or participating in outdoor activities.

* ADDITIONAL DETAILS...Warm nighttime temperatures will limit heat
  relief, acting to increase heat stress for those without
  adequate access to cooling.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ065-040415-
/O.EXT.KSGX.EH.W.0005.000000T0000Z-210806T0300Z/
San Gorgonio Pass Near Banning-
Including the cities of Banning and Desert Hot Springs
104 PM PDT Tue Aug 3 2021

...EXCESSIVE HEAT WARNING NOW IN EFFECT UNTIL 8 PM PDT THURSDAY...

* WHAT...Dangerously hot conditions with high temperatures of 108
  to 118 expected.

* WHERE...San Gorgonio Pass Near Banning.

* WHEN...Until 8 PM PDT Thursday.

* IMPACTS...Extreme heat will significantly increase the 
  potential for heat related illnesses, particularly for those 
  working or participating in outdoor activities.

* ADDITIONAL DETAILS...Very warm nighttime temperatures will 
  limit heat relief, acting to increase heat stress for those 
  without adequate access to cooling.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ061-062-040415-
/O.EXT.KSGX.EH.W.0005.000000T0000Z-210806T0300Z/
Coachella Valley-San Diego County Deserts-
Including the cities of Indio, Palm Springs, Cathedral City, 
Palm Desert, Palm Desert Country, La Quinta, Coachella, 
and Borrego Springs
104 PM PDT Tue Aug 3 2021

...EXCESSIVE HEAT WARNING NOW IN EFFECT UNTIL 8 PM PDT THURSDAY...

* WHAT...Dangerously hot conditions with temperatures of 115 to
  122 expected.

* WHERE...San Diego County Deserts and Coachella Valley.

* WHEN...Until 8 PM PDT Thursday.

* IMPACTS...Extreme heat will significantly increase the 
  potential for heat related illnesses, particularly for those 
  working or participating in outdoor activities.

* ADDITIONAL DETAILS...Very warm nighttime temperatures will 
  limit heat relief, acting to increase heat stress for those 
  without adequate access to cooling..

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ048-040415-
/O.EXT.KSGX.HT.Y.0004.000000T0000Z-210806T0300Z/
San Bernardino and Riverside County Valleys-The Inland Empire-
Including the cities of Riverside, San Bernardino, Ontario, 
Moreno Valley, Fontana, Rancho Cucamonga, and Corona
104 PM PDT Tue Aug 3 2021

...HEAT ADVISORY NOW IN EFFECT UNTIL 8 PM PDT THURSDAY...

* WHAT...Temperatures of 100 to 110 expected.

* WHERE...San Bernardino and Riverside County Valleys-The Inland 
  Empire.

* WHEN...Until 8 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ050-040415-
/O.EXT.KSGX.HT.Y.0004.000000T0000Z-210806T0300Z/
San Diego County Valleys-
Including the cities of Escondido, El Cajon, San Marcos, La Mesa,
Santee, and Poway
104 PM PDT Tue Aug 3 2021

...HEAT ADVISORY NOW IN EFFECT UNTIL 8 PM PDT THURSDAY...

* WHAT...High temperatures in the inland valleys of 95 to 105
  expected.

* WHERE...San Diego County Valleys.

* WHEN...Until 8 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ055-056-058-040415-
/O.EXT.KSGX.HT.Y.0004.000000T0000Z-210806T0300Z/
San Bernardino County Mountains-Riverside County Mountains-
San Diego County Mountains-
Including the cities of Crestline, Lake Arrowhead, 
Idyllwild-Pine Cove, Julian, and Pine Valley
104 PM PDT Tue Aug 3 2021

...HEAT ADVISORY NOW IN EFFECT UNTIL 8 PM PDT THURSDAY...

* WHAT...High temperatures in the mid-90s to 105 below 6000 feet
  expected. 

* WHERE...Riverside County Mountains, San Bernardino County
  Mountains and San Diego County Mountains below 6000 feet.

* WHEN...Until 8 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

For more information from the National Weather Service visit
http://weather.gov/sandiego

CO
472 
WWUS76 KSGX 040432
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service SAN DIEGO CA
932 PM PDT Tue Aug 3 2021

CAZ060-041245-
/O.CON.KSGX.EH.W.0005.000000T0000Z-210806T0300Z/
Apple and Lucerne Valleys-
Including the cities of Victorville, Hesperia, and Apple Valley
932 PM PDT Tue Aug 3 2021

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT
THURSDAY...

* WHAT...Dangerously hot conditions with high temperatures of 
  105 to 110 expected.

* WHERE...Apple and Lucerne Valleys.

* WHEN...Until 8 PM PDT Thursday.

* IMPACTS...Extreme heat will significantly increase the 
  potential for heat related illnesses, particularly for those 
  working or participating in outdoor activities.

* ADDITIONAL DETAILS...Warm nighttime temperatures will limit heat
  relief, acting to increase heat stress for those without
  adequate access to cooling.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ065-041245-
/O.CON.KSGX.EH.W.0005.000000T0000Z-210806T0300Z/
San Gorgonio Pass Near Banning-
Including the cities of Banning and Desert Hot Springs
932 PM PDT Tue Aug 3 2021

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT
THURSDAY...

* WHAT...Dangerously hot conditions with high temperatures of 
  108 to 118 expected.

* WHERE...San Gorgonio Pass Near Banning.

* WHEN...Until 8 PM PDT Thursday.

* IMPACTS...Extreme heat will significantly increase the 
  potential for heat related illnesses, particularly for those 
  working or participating in outdoor activities.

* ADDITIONAL DETAILS...Very warm nighttime temperatures will 
  limit heat relief, acting to increase heat stress for those 
  without adequate access to cooling.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ061-062-041245-
/O.CON.KSGX.EH.W.0005.000000T0000Z-210806T0300Z/
Coachella Valley-San Diego County Deserts-
Including the cities of Indio, Palm Springs, Cathedral City, 
Palm Desert, Palm Desert Country, La Quinta, Coachella, 
and Borrego Springs
932 PM PDT Tue Aug 3 2021

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT
THURSDAY...

* WHAT...Dangerously hot conditions with temperatures of 115 to 
  122 expected.

* WHERE...San Diego County Deserts and Coachella Valley.

* WHEN...Until 8 PM PDT Thursday.

* IMPACTS...Extreme heat will significantly increase the 
  potential for heat related illnesses, particularly for those 
  working or participating in outdoor activities.

* ADDITIONAL DETAILS...Very warm nighttime temperatures will 
  limit heat relief, acting to increase heat stress for those 
  without adequate access to cooling.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ048-041245-
/O.CON.KSGX.HT.Y.0004.000000T0000Z-210806T0300Z/
San Bernardino and Riverside County Valleys-The Inland Empire-
Including the cities of Riverside, San Bernardino, Ontario, 
Moreno Valley, Fontana, Rancho Cucamonga, and Corona
932 PM PDT Tue Aug 3 2021

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THURSDAY...

* WHAT...Temperatures of 100 to 110 expected.

* WHERE...San Bernardino and Riverside County Valleys-The Inland 
  Empire.

* WHEN...Until 8 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ050-041245-
/O.CON.KSGX.HT.Y.0004.000000T0000Z-210806T0300Z/
San Diego County Valleys-
Including the cities of Escondido, El Cajon, San Marcos, La Mesa,
Santee, and Poway
932 PM PDT Tue Aug 3 2021

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THURSDAY...

* WHAT...High temperatures in the inland valleys of 95 to 105 
  expected.

* WHERE...San Diego County Valleys.

* WHEN...Until 8 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ055-056-058-041245-
/O.CON.KSGX.HT.Y.0004.000000T0000Z-210806T0300Z/
San Bernardino County Mountains-Riverside County Mountains-
San Diego County Mountains-
Including the cities of Crestline, Lake Arrowhead, 
Idyllwild-Pine Cove, Julian, and Pine Valley
932 PM PDT Tue Aug 3 2021

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THURSDAY...

* WHAT...High temperatures in the mid-90s to 105 below 6000 feet 
  expected.

* WHERE...Riverside County Mountains, San Bernardino County 
  Mountains and San Diego County Mountains below 6000 feet.

* WHEN...Until 8 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

For more information from the National Weather Service visit
http://weather.gov/sandiego
693 
WWUS76 KSGX 041030
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service SAN DIEGO CA
330 AM PDT Wed Aug 4 2021

CAZ060-042300-
/O.CON.KSGX.EH.W.0005.000000T0000Z-210806T0300Z/
Apple and Lucerne Valleys-
Including the cities of Victorville, Hesperia, and Apple Valley
330 AM PDT Wed Aug 4 2021

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT
THURSDAY...

* WHAT...Dangerously hot conditions with high temperatures of 104
  to 114 expected.

* WHERE...Apple and Lucerne Valleys.

* WHEN...Until 8 PM PDT Thursday.

* IMPACTS...Extreme heat will significantly increase the 
  potential for heat related illnesses, particularly for those 
  working or participating in outdoor activities.

* ADDITIONAL DETAILS...Warm nighttime temperatures will limit heat
  relief, acting to increase heat stress for those without
  adequate access to cooling.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ065-042300-
/O.CON.KSGX.EH.W.0005.000000T0000Z-210806T0300Z/
San Gorgonio Pass Near Banning-
Including the cities of Banning and Desert Hot Springs
330 AM PDT Wed Aug 4 2021

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT
THURSDAY...

* WHAT...Dangerously hot conditions with high temperatures of 106
  to 116 expected.

* WHERE...San Gorgonio Pass Near Banning.

* WHEN...Until 8 PM PDT Thursday.

* IMPACTS...Extreme heat will significantly increase the 
  potential for heat related illnesses, particularly for those 
  working or participating in outdoor activities.

* ADDITIONAL DETAILS...Very warm nighttime temperatures will 
  limit heat relief, acting to increase heat stress for those 
  without adequate access to cooling.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ061-062-042300-
/O.CON.KSGX.EH.W.0005.000000T0000Z-210806T0300Z/
Coachella Valley-San Diego County Deserts-
Including the cities of Indio, Palm Springs, Cathedral City, 
Palm Desert, Palm Desert Country, La Quinta, Coachella, 
and Borrego Springs
330 AM PDT Wed Aug 4 2021

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT
THURSDAY...

* WHAT...Dangerously hot conditions with high temperatures of 114
  to 122 expected.

* WHERE...San Diego County Deserts and Coachella Valley.

* WHEN...Until 8 PM PDT Thursday.

* IMPACTS...Extreme heat will significantly increase the 
  potential for heat related illnesses, particularly for those 
  working or participating in outdoor activities.

* ADDITIONAL DETAILS...Very warm nighttime temperatures will 
  limit heat relief, acting to increase heat stress for those 
  without adequate access to cooling.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ048-042300-
/O.CON.KSGX.HT.Y.0004.000000T0000Z-210806T0300Z/
San Bernardino and Riverside County Valleys-The Inland Empire-
Including the cities of Riverside, San Bernardino, Ontario, 
Moreno Valley, Fontana, Rancho Cucamonga, and Corona
330 AM PDT Wed Aug 4 2021

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THURSDAY...

* WHAT...High temperatures of 98 to 108 expected.

* WHERE...San Bernardino and Riverside County Valleys-The Inland 
  Empire.

* WHEN...Until 8 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ050-042300-
/O.CON.KSGX.HT.Y.0004.000000T0000Z-210806T0300Z/
San Diego County Valleys-
Including the cities of Escondido, El Cajon, San Marcos, La Mesa,
Santee, and Poway
330 AM PDT Wed Aug 4 2021

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THURSDAY...

* WHAT...High temperatures of 95 to 104 for the inland valleys
  expected.

* WHERE...San Diego County Valleys.

* WHEN...Until 8 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ055-056-058-042300-
/O.CON.KSGX.HT.Y.0004.000000T0000Z-210806T0300Z/
San Bernardino County Mountains-Riverside County Mountains-
San Diego County Mountains-
Including the cities of Crestline, Lake Arrowhead, 
Idyllwild-Pine Cove, Julian, and Pine Valley
330 AM PDT Wed Aug 4 2021

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THURSDAY BELOW
6000 FEET...

* WHAT...High temperatures of 95 to 104 below 6000 feet expected.

* WHERE...Riverside County Mountains, San Bernardino County 
  Mountains and San Diego County Mountains.

* WHEN...Until 8 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

For more information from the National Weather Service visit
http://weather.gov/sandiego

17
244 
WWUS76 KSGX 042009
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service SAN DIEGO CA
109 PM PDT Wed Aug 4 2021

CAZ060-050500-
/O.CON.KSGX.EH.W.0005.000000T0000Z-210806T0300Z/
Apple and Lucerne Valleys-
Including the cities of Victorville, Hesperia, and Apple Valley
109 PM PDT Wed Aug 4 2021

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT
THURSDAY...

* WHAT...Dangerously hot conditions with temperatures up to 108.

* WHERE...Apple and Lucerne Valleys.

* WHEN...Until 8 PM PDT Thursday.

* IMPACTS...Extreme heat will significantly increase the potential
  for heat related illnesses, particularly for those working or
  participating in outdoor activities. Warm nighttime temperatures
  will limit heat relief, acting to increase heat stress for those
  without adequate access to cooling.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ065-050500-
/O.CON.KSGX.EH.W.0005.000000T0000Z-210806T0300Z/
San Gorgonio Pass Near Banning-
Including the cities of Banning and Desert Hot Springs
109 PM PDT Wed Aug 4 2021

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT
THURSDAY...

* WHAT...Dangerously hot conditions with temperatures up to 114.

* WHERE...San Gorgonio Pass Near Banning.

* WHEN...Until 8 PM PDT Thursday.

* IMPACTS...Extreme heat will significantly increase the potential
  for heat related illnesses, particularly for those working or
  participating in outdoor activities. Warm nighttime 
  temperatures will limit heat relief, acting to increase heat 
  stress for those without adequate access to cooling.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ061-062-050500-
/O.CON.KSGX.EH.W.0005.000000T0000Z-210806T0300Z/
Coachella Valley-San Diego County Deserts-
Including the cities of Indio, Palm Springs, Cathedral City, 
Palm Desert, Palm Desert Country, La Quinta, Coachella, 
and Borrego Springs
109 PM PDT Wed Aug 4 2021

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT
THURSDAY...

* WHAT...Dangerously hot conditions with temperatures up to 118.

* WHERE...San Diego County Deserts and Coachella Valley.

* WHEN...Until 8 PM PDT Thursday.

* IMPACTS...Extreme heat will significantly increase the potential
  for heat related illnesses, particularly for those working or
  participating in outdoor activities. Warm nighttime temperatures
  will limit heat relief, acting to increase heat stress for those
  without adequate access to cooling.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ048-050500-
/O.CON.KSGX.HT.Y.0004.000000T0000Z-210806T0300Z/
San Bernardino and Riverside County Valleys-The Inland Empire-
Including the cities of Riverside, San Bernardino, Ontario, 
Moreno Valley, Fontana, Rancho Cucamonga, and Corona
109 PM PDT Wed Aug 4 2021

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THURSDAY...

* WHAT...Temperatures up to 105.

* WHERE...San Bernardino and Riverside County Valleys-The Inland 
  Empire.

* WHEN...Until 8 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ050-050500-
/O.CON.KSGX.HT.Y.0004.000000T0000Z-210806T0300Z/
San Diego County Valleys-
109 PM PDT Wed Aug 4 2021

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THURSDAY...

* WHAT...Temperatures up to 100.

* WHERE...Eastern valleys of San Diego.

* WHEN...Until 8 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ055-056-058-050500-
/O.CON.KSGX.HT.Y.0004.000000T0000Z-210806T0300Z/
San Bernardino County Mountains-Riverside County Mountains-
San Diego County Mountains-
Including the cities of Crestline, Lake Arrowhead, 
Idyllwild-Pine Cove, Julian, and Pine Valley
109 PM PDT Wed Aug 4 2021

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THURSDAY...

* WHAT...Temperatures up to 99.

* WHERE...Riverside County Mountains, San Bernardino County
  Mountains and San Diego County Mountains below 6,000 feet
  elevation.

* WHEN...Until 8 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

For more information from the National Weather Service visit
http://weather.gov/sandiego
619 
WWUS76 KSGX 050337
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service SAN DIEGO CA
837 PM PDT Wed Aug 4 2021

CAZ060-051145-
/O.CON.KSGX.EH.W.0005.000000T0000Z-210806T0300Z/
Apple and Lucerne Valleys-
Including the cities of Victorville, Hesperia, and Apple Valley
837 PM PDT Wed Aug 4 2021

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT
THURSDAY...

* WHAT...Dangerously hot conditions with temperatures up to 108.

* WHERE...Apple and Lucerne Valleys.

* WHEN...Until 8 PM PDT Thursday.

* IMPACTS...Extreme heat will significantly increase the 
  potential for heat related illnesses, particularly for those 
  working or participating in outdoor activities. Warm nighttime 
  temperatures will limit heat relief, acting to increase heat 
  stress for those without adequate access to cooling.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ065-051145-
/O.CON.KSGX.EH.W.0005.000000T0000Z-210806T0300Z/
San Gorgonio Pass Near Banning-
Including the cities of Banning and Desert Hot Springs
837 PM PDT Wed Aug 4 2021

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT
THURSDAY...

* WHAT...Dangerously hot conditions with temperatures up to 114.

* WHERE...San Gorgonio Pass Near Banning.

* WHEN...Until 8 PM PDT Thursday.

* IMPACTS...Extreme heat will significantly increase the 
  potential for heat related illnesses, particularly for those 
  working or participating in outdoor activities. Warm nighttime 
  temperatures will limit heat relief, acting to increase heat 
  stress for those without adequate access to cooling.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ061-062-051145-
/O.CON.KSGX.EH.W.0005.000000T0000Z-210806T0300Z/
Coachella Valley-San Diego County Deserts-
Including the cities of Indio, Palm Springs, Cathedral City, 
Palm Desert, Palm Desert Country, La Quinta, Coachella, 
and Borrego Springs
837 PM PDT Wed Aug 4 2021

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT
THURSDAY...

* WHAT...Dangerously hot conditions with temperatures up to 118.

* WHERE...San Diego County Deserts and Coachella Valley.

* WHEN...Until 8 PM PDT Thursday.

* IMPACTS...Extreme heat will significantly increase the 
  potential for heat related illnesses, particularly for those 
  working or participating in outdoor activities. Warm nighttime 
  temperatures will limit heat relief, acting to increase heat 
  stress for those without adequate access to cooling.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ048-051145-
/O.CON.KSGX.HT.Y.0004.000000T0000Z-210806T0300Z/
San Bernardino and Riverside County Valleys-The Inland Empire-
Including the cities of Riverside, San Bernardino, Ontario, 
Moreno Valley, Fontana, Rancho Cucamonga, and Corona
837 PM PDT Wed Aug 4 2021

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THURSDAY...

* WHAT...Temperatures up to 105.

* WHERE...San Bernardino and Riverside County Valleys-The Inland 
  Empire.

* WHEN...Until 8 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ050-051145-
/O.CON.KSGX.HT.Y.0004.000000T0000Z-210806T0300Z/
San Diego County Valleys-
837 PM PDT Wed Aug 4 2021

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THURSDAY...

* WHAT...Temperatures up to 100.

* WHERE...Eastern valleys of San Diego.

* WHEN...Until 8 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ055-056-058-051145-
/O.CON.KSGX.HT.Y.0004.000000T0000Z-210806T0300Z/
San Bernardino County Mountains-Riverside County Mountains-
San Diego County Mountains-
Including the cities of Crestline, Lake Arrowhead, 
Idyllwild-Pine Cove, Julian, and Pine Valley
837 PM PDT Wed Aug 4 2021

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THURSDAY...

* WHAT...Temperatures up to 99.

* WHERE...Riverside County Mountains, San Bernardino County 
  Mountains and San Diego County Mountains below 6,000 feet 
  elevation.

* WHEN...Until 8 PM PDT Thursday.

* IMPACTS...Hot temperatures may cause heat illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

For more information from the National Weather Service visit
http://weather.gov/sandiego
599 
WWUS76 KSGX 050901
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service SAN DIEGO CA
201 AM PDT Thu Aug 5 2021

CAZ060-060300-
/O.CON.KSGX.EH.W.0005.000000T0000Z-210806T0300Z/
Apple and Lucerne Valleys-
Including the cities of Victorville, Hesperia, and Apple Valley
201 AM PDT Thu Aug 5 2021

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS
EVENING...

* WHAT...Dangerously hot conditions with high temperatures of 100
  to 110 expected.

* WHERE...Apple and Lucerne Valleys.

* WHEN...Until 8 PM PDT this evening.

* IMPACTS...Extreme heat will significantly increase the 
  potential for heat related illnesses, particularly for those 
  working or participating in outdoor activities.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ065-060300-
/O.CON.KSGX.EH.W.0005.000000T0000Z-210806T0300Z/
San Gorgonio Pass Near Banning-
Including the cities of Banning and Desert Hot Springs
201 AM PDT Thu Aug 5 2021

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS
EVENING...

* WHAT...Dangerously hot conditions with high temperatures of 104
  to 114 expected.

* WHERE...San Gorgonio Pass Near Banning.

* WHEN...Until 8 PM PDT this evening.

* IMPACTS...Extreme heat will significantly increase the 
  potential for heat related illnesses, particularly for those 
  working or participating in outdoor activities.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ061-062-060300-
/O.CON.KSGX.EH.W.0005.000000T0000Z-210806T0300Z/
Coachella Valley-San Diego County Deserts-
Including the cities of Indio, Palm Springs, Cathedral City, 
Palm Desert, Palm Desert Country, La Quinta, Coachella, 
and Borrego Springs
201 AM PDT Thu Aug 5 2021

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS
EVENING...

* WHAT...Dangerously hot conditions with high temperatures of 114
  to 120 expected.

* WHERE...San Diego County Deserts and Coachella Valley.

* WHEN...Until 8 PM PDT this evening.

* IMPACTS...Extreme heat will significantly increase the 
  potential for heat related illnesses, particularly for those 
  working or participating in outdoor activities.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ048-060300-
/O.CON.KSGX.HT.Y.0004.000000T0000Z-210806T0300Z/
San Bernardino and Riverside County Valleys-The Inland Empire-
Including the cities of Riverside, San Bernardino, Ontario, 
Moreno Valley, Fontana, Rancho Cucamonga, and Corona
201 AM PDT Thu Aug 5 2021

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING...

* WHAT...High temperatures of 98 to 106 expected.

* WHERE...San Bernardino and Riverside County Valleys-The Inland 
  Empire.

* WHEN...Until 8 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ050-060300-
/O.CON.KSGX.HT.Y.0004.000000T0000Z-210806T0300Z/
San Diego County Valleys-
201 AM PDT Thu Aug 5 2021

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING...

* WHAT...High temperatures of 95 to 102 in the inland valleys
  expected.

* WHERE...San Diego County Valleys.

* WHEN...Until 8 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ055-056-058-060300-
/O.CON.KSGX.HT.Y.0004.000000T0000Z-210806T0300Z/
San Bernardino County Mountains-Riverside County Mountains-
San Diego County Mountains-
Including the cities of Crestline, Lake Arrowhead, 
Idyllwild-Pine Cove, Julian, and Pine Valley
201 AM PDT Thu Aug 5 2021

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING
BELOW 6000 FEET...

* WHAT...High temperatures in the 90s to 104 below 6000 feet
  expected.

* WHERE...Riverside County Mountains, San Bernardino County 
  Mountains and San Diego County Mountains.

* WHEN...Until 8 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

For more information from the National Weather Service visit
http://weather.gov/sandiego

17
859 
WWUS76 KSGX 052048
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service SAN DIEGO CA
148 PM PDT Thu Aug 5 2021

CAZ060-060300-
/O.CON.KSGX.EH.W.0005.000000T0000Z-210806T0300Z/
Apple and Lucerne Valleys-
Including the cities of Victorville, Hesperia, and Apple Valley
148 PM PDT Thu Aug 5 2021

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS
EVENING...

* WHAT...Dangerously hot conditions with temperatures up to 106.

* WHERE...Apple and Lucerne Valleys.

* WHEN...Until 8 PM PDT this evening.

* IMPACTS...Extreme heat will significantly increase the 
  potential for heat related illnesses, particularly for those 
  working or participating in outdoor activities.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ065-060300-
/O.CON.KSGX.EH.W.0005.000000T0000Z-210806T0300Z/
San Gorgonio Pass Near Banning-
Including the cities of Banning and Desert Hot Springs
148 PM PDT Thu Aug 5 2021

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS
EVENING...

* WHAT...Dangerously hot conditions with temperatures up to 111.

* WHERE...San Gorgonio Pass Near Banning.

* WHEN...Until 8 PM PDT this evening.

* IMPACTS...Extreme heat will significantly increase the 
  potential for heat related illnesses, particularly for those 
  working or participating in outdoor activities.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ061-062-060300-
/O.CON.KSGX.EH.W.0005.000000T0000Z-210806T0300Z/
Coachella Valley-San Diego County Deserts-
Including the cities of Indio, Palm Springs, Cathedral City, 
Palm Desert, Palm Desert Country, La Quinta, Coachella, 
and Borrego Springs
148 PM PDT Thu Aug 5 2021

...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS
EVENING...

* WHAT...Dangerously hot conditions with temperatures up to 114.

* WHERE...San Diego County Deserts and Coachella Valley.

* WHEN...Until 8 PM PDT this evening.

* IMPACTS...Extreme heat will significantly increase the 
  potential for heat related illnesses, particularly for those 
  working or participating in outdoor activities.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ048-060300-
/O.CON.KSGX.HT.Y.0004.000000T0000Z-210806T0300Z/
San Bernardino and Riverside County Valleys-The Inland Empire-
Including the cities of Riverside, San Bernardino, Ontario, 
Moreno Valley, Fontana, Rancho Cucamonga, and Corona
148 PM PDT Thu Aug 5 2021

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING...

* WHAT...Temperatures up to 101.

* WHERE...San Bernardino and Riverside County Valleys-The Inland 
  Empire.

* WHEN...Until 8 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ050-060300-
/O.CON.KSGX.HT.Y.0004.000000T0000Z-210806T0300Z/
San Diego County Valleys-
148 PM PDT Thu Aug 5 2021

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING...

* WHAT...Temperatures up to 94.

* WHERE...San Diego County Valleys.

* WHEN...Until 8 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

CAZ055-056-058-060300-
/O.CON.KSGX.HT.Y.0004.000000T0000Z-210806T0300Z/
San Bernardino County Mountains-Riverside County Mountains-
San Diego County Mountains-
Including the cities of Crestline, Lake Arrowhead, 
Idyllwild-Pine Cove, Julian, and Pine Valley
148 PM PDT Thu Aug 5 2021

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING...

* WHAT...Temperatures up to 99.

* WHERE...Riverside County Mountains, San Bernardino County 
  Mountains and San Diego County Mountains.

* WHEN...Until 8 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses to occur.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay in an air-conditioned room, stay out
of the sun, and check up on relatives and neighbors. Young
children and pets should never be left unattended in vehicles
under any circumstances.

Take extra precautions if you work or spend time outside. When
possible reschedule strenuous activities to early morning or
evening. Know the signs and symptoms of heat exhaustion and heat
stroke. Wear lightweight and loose fitting clothing when
possible. To reduce risk during outdoor work, the Occupational
Safety and Health Administration recommends scheduling frequent
rest breaks in shaded or air conditioned environments. Anyone
overcome by heat should be moved to a cool and shaded location.
Heat stroke is an emergency! Call 9 1 1.

&&

$$

For more information from the National Weather Service visit
http://weather.gov/sandiego
055 
WWUS76 KSGX 060249
NPWSGX

URGENT - WEATHER MESSAGE
National Weather Service SAN DIEGO CA
749 PM PDT Thu Aug 5 2021

CAZ060-060400-
/O.EXP.KSGX.EH.W.0005.000000T0000Z-210806T0300Z/
Apple and Lucerne Valleys-
Including the cities of Victorville, Hesperia, and Apple Valley
749 PM PDT Thu Aug 5 2021

...EXCESSIVE HEAT WARNING WILL EXPIRE AT 8 PM PDT THIS EVENING...

Temperatures will not be quite as high on Friday and Saturday. 
Therefore the Excessive Heat Warning will be allowed to expire 
this evening.

$$

CAZ065-060400-
/O.EXP.KSGX.EH.W.0005.000000T0000Z-210806T0300Z/
San Gorgonio Pass Near Banning-
Including the cities of Banning and Desert Hot Springs
749 PM PDT Thu Aug 5 2021

...EXCESSIVE HEAT WARNING WILL EXPIRE AT 8 PM PDT THIS EVENING...

Temperatures will not be quite as high on Friday and Saturday. 
Therefore the Excessive Heat Warning will be allowed to expire 
this evening.

$$

CAZ061-062-060400-
/O.EXP.KSGX.EH.W.0005.000000T0000Z-210806T0300Z/
Coachella Valley-San Diego County Deserts-
Including the cities of Indio, Palm Springs, Cathedral City, 
Palm Desert, Palm Desert Country, La Quinta, Coachella, 
and Borrego Springs
749 PM PDT Thu Aug 5 2021

...EXCESSIVE HEAT WARNING WILL EXPIRE AT 8 PM PDT THIS EVENING...

Temperatures will not be quite as high on Friday and Saturday. 
Therefore the Excessive Heat Warning will be allowed to expire 
this evening.

$$

CAZ048-060400-
/O.EXP.KSGX.HT.Y.0004.000000T0000Z-210806T0300Z/
San Bernardino and Riverside County Valleys-The Inland Empire-
Including the cities of Riverside, San Bernardino, Ontario, 
Moreno Valley, Fontana, Rancho Cucamonga, and Corona
749 PM PDT Thu Aug 5 2021

...HEAT ADVISORY WILL EXPIRE AT 8 PM PDT THIS EVENING...

Temperatures will not be quite as high on Friday and Saturday. 
Therefore the Heat Advisory will be allowed to expire this 
evening.

$$

CAZ050-060400-
/O.EXP.KSGX.HT.Y.0004.000000T0000Z-210806T0300Z/
San Diego County Valleys-
749 PM PDT Thu Aug 5 2021

...HEAT ADVISORY WILL EXPIRE AT 8 PM PDT THIS EVENING...

Temperatures will not be quite as high on Friday and Saturday. 
Therefore the Heat Advisory will be allowed to expire this 
evening.

$$

CAZ055-056-058-060400-
/O.EXP.KSGX.HT.Y.0004.000000T0000Z-210806T0300Z/
San Bernardino County Mountains-Riverside County Mountains-
San Diego County Mountains-
Including the cities of Crestline, Lake Arrowhead, 
Idyllwild-Pine Cove, Julian, and Pine Valley
749 PM PDT Thu Aug 5 2021

...HEAT ADVISORY WILL EXPIRE AT 8 PM PDT THIS EVENING...

Temperatures will not be quite as high on Friday and Saturday. 
Therefore the Heat Advisory will be allowed to expire this 
evening.

$$

Moede

What forecasters said that day

The local office's own words before this excessive heat warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS San Diego, CA wrote its last area forecast discussion before this excessive heat warning went out at Aug 2, 9:28 AM PDT, 2 hours 10 minutes earlier.

Area forecast discussion, Aug 2, 9:28 AM PDT, 2 hours 10 minutes before
Area Forecast Discussion
National Weather Service San Diego CA
928 AM PDT Mon Aug 2 2021

.SYNOPSIS...
Strengthening high pressure will bring excessive heat to inland
areas through Wednesday, with milder conditions closer to the
beaches. A shrinking marine layer will keep most coastal locations
free of clouds the next few days. Look for a cooling trend during
the latter half of the week, with increasing low clouds at the
coast. Staying dry through the weekend.

&&

.DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE...
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES...

.SHORT TERM (Today through Wednesday)...
A strong area of high pressure will anchor itself over far
southeastern California through Wednesday, with 500 mb heights
peaking near 596 dam. West of the mountains, temperatures will
peak today and Tuesday, with slightly cooler conditions Wednesday.
The deserts will experience excessive heat Tuesday and Wednesday,
with highs that could locally approach 120 F in the Coachella
Valley, accompanied by very warm overnight lows. Anomalously cool
sea surface temperatures will help mitigate heat impacts at the
coast and beaches, such that moderate/high heat risk will
primarily impact interior valleys, with lower risk closer to the
coast. Patchy low clouds may develop overnight/early morning over
the coastal waters and near beaches, but coverage will be very
limited if not zero over land the next couple of nights. As the
high pressure weakens, expect low clouds to slowly expand into
coastal areas Wednesday and Thursday.

&&

.LONG TERM (Thursday through Sunday)...
Weakening high pressure and an approaching trough to our northwest
will enhance onshore flow, deepen the marine layer, and bring
noticeably cooler temperatures to the entire region. Temperatures
should return to near normal values by around Sunday. No monsoonal
activity is expected through the weekend.

&&

.AVIATION...
021630Z...Coast/Valleys...Patchy low clouds and fog will continue
through 19Z along the beaches of southern San Diego County with
local cigs below 500 ft MSL and local vis below 3 miles. Otherwise,
clear skies and unrestricted vis will prevail through early this
evening. Patchy low clouds and fog will develop within 5 miles of
the coast overnight into Tue morning but confidence is low that any
TAF sites will have a cig or vis restriction. Local cigs below 500
ft MSL and local vis below 3 miles will again be possible 06Z-17Z
Tue.

Mountains/Deserts...Clear with unrestricted vis through Tue morning.

&&

.MARINE...
Patchy dense fog is possible late tonight and Tuesday morning with
visibility less than 1 nm, mainly near the coast and up to about 15
nm offshore. Breezy northwest winds with gusts to 20 kt are possible
in the outer waters each afternoon and evening through Wednesday.
Otherwise, no hazardous marine conditions are expected through
Saturday.

&&

.BEACHES...
A couple of south swells of 2-3 feet at 14-16 sec will bring surf of
3-6 ft and a high rip current risk to the south facing beaches of
Orange County and northern San Diego County Tuesday through
Thursday.

&&

.SGX WATCHES/WARNINGS/ADVISORIES...
CA...Heat Advisory until 8 PM PDT Wednesday for Riverside County
     Mountains-San Bernardino County Mountains-San Bernardino
     and Riverside County Valleys-The Inland Empire-San Diego
     County Mountains.

     Excessive Heat Watch from Tuesday morning through Wednesday
     evening for Apple and Lucerne Valleys-Coachella Valley-San
     Diego County Deserts-San Gorgonio Pass Near Banning.

PZ...NONE.

&&

SYNOPSIS/PUBLIC DISCUSSION...Rodriguez
AVIATION/MARINE/BEACHES...Maxwell

In the hours before

Local storm report, Aug 2, 8:31 AM PDT, 3 hours 7 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN DIEGO CA
831 AM PDT MON AUG 2 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1230 PM     LIGHTNING        1 NNW BIG BEAR CITY     34.27N 116.85W
07/31/2021                   SAN BERNARDINO     CA   PARK/FOREST SRVC

            RETRANSMIT, PREVIOUS LIGHTNING REPORT FROM 1
            NNW BIG BEAR CITY. A 200 YEAR OLD JEFFERY
            PINE TREE WAS STRUCK BY LIGHTNING. IT BURNED
            LATER IN THE EVENING UNTIL EXTINGUISHED. THE
            LARGE TREE SPLIT IN HALF WHILE BURNING. THE
            THUNDERSTORM ON RADAR APPEARED TO BE DURING
            SEVERAL CLOUD TO GROUND STRIKES NEAR BIG
            BEAR AIRPORT AROUND 1230 PM.

&&

AOT

Nearby

Excessive Heat Warnings in California, 2021Every excessive heat warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.