Heat Advisory 2, NWS Eureka, CA

850 
WWUS76 KEKA 130448
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
948 PM PDT Fri Jun 12 2026

CAZ113-114-118>120-131500-
/O.CON.KEKA.HT.Y.0001.000000T0000Z-260614T0500Z/
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Redwood Valley, Gravelly Valley Airport, Clearlake, Ukiah,
Knobcone Camp, Upper Lake, Cobb, Hidden Valley Lake, Clearlake Park,
Lakeport, Hopland, Finley, Calpella, Middletown, and Talmage
948 PM PDT Fri Jun 12 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT SATURDAY...

* WHAT...High temperatures of 96 to 102 expected for most valley
  locations.  Moderate to Major HeatRisk expected.

* WHERE...Lake County, and Southeastern Interior Mendocino.

* WHEN...Until 10 PM PDT Saturday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

&&

$$

CAZ102-131500-
/O.CON.KEKA.HT.Y.0002.260613T1800Z-260617T0500Z/
Interior Del Norte-
Including Gasquet
948 PM PDT Fri Jun 12 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM SATURDAY TO 10 PM PDT
TUESDAY...

* WHAT...High temperatures of 95 to 102 for the warmer interior
  valleys. Moderate to major HeatRisk expected

* WHERE...Interior Del Norte.

* WHEN...From 11 AM Saturday to 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ105-131500-
/O.CON.KEKA.HT.Y.0002.260613T1800Z-260617T0500Z/
Northeastern Interior Humboldt-
Including Weitchpec, Orleans, Hoopa, and Willow Creek
948 PM PDT Fri Jun 12 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM SATURDAY TO 10 PM PDT
TUESDAY...

* WHAT...High temperatures of 99 to 110 for the interior valleys.
  Moderate to Major HeatRisk expected.

* WHERE...Northeastern Interior Humboldt.

* WHEN...From 11 AM Saturday to 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ116-131500-
/O.CON.KEKA.HT.Y.0002.260613T1800Z-260617T0500Z/
Northwestern and Central Trinity-
Including Del Loma, Helena, Junction City, Douglas City, Weaverville,
and Big Bar
948 PM PDT Fri Jun 12 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM SATURDAY TO 10 PM PDT
TUESDAY...

* WHAT...High temperatures of 100 to 112. Moderate to Major HeatRisk
  expected.

* WHERE...Northwestern and Central Trinity.

* WHEN...From 11 AM Saturday to 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ108-131500-
/O.CON.KEKA.HT.Y.0002.260614T1800Z-260617T0500Z/
Southern Trinity-
Including Hayfork, Hyampom, Zenia, Peanut, Forest Glen, and Ruth
948 PM PDT Fri Jun 12 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM SUNDAY TO 10 PM PDT
TUESDAY...

* WHAT...High temperatures of 99 to 105 for most valleys. Moderate to
  Major HeatRisk expected.

* WHERE...Southern Trinity.

* WHEN...From 11 AM Sunday to 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ111-131500-
/O.CON.KEKA.HT.Y.0002.260614T1800Z-260617T0500Z/
Northeastern Interior Mendocino-
Including Covelo
948 PM PDT Fri Jun 12 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM SUNDAY TO 10 PM PDT
TUESDAY...

* WHAT...High temperatures of 99 to 105. Moderate to Major HeatRisk
  expected.

* WHERE...Northeastern Interior Mendocino.

* WHEN...From 11 AM Sunday to 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ117-131500-
/O.CON.KEKA.HT.Y.0002.260614T1800Z-260617T0500Z/
Northeastern Trinity-
Including Trinity Center and Carrville
948 PM PDT Fri Jun 12 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM SUNDAY TO 10 PM PDT
TUESDAY...

* WHAT...High temperatures of 99 to 105 for most valleys. Moderate to
  Major HeatRisk expected.

* WHERE...Northeastern Trinity.

* WHEN...From 11 AM Sunday to 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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 hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

EYS

327 
WWUS76 KEKA 131342
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
642 AM PDT Sat Jun 13 2026

CAZ113-114-118>120-140500-
/O.CON.KEKA.HT.Y.0001.000000T0000Z-260614T0500Z/
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Talmage, Middletown, Gravelly Valley Airport, Upper Lake,
Redwood Valley, Clearlake Park, Knobcone Camp, Hidden Valley Lake,
Finley, Cobb, Calpella, Lakeport, Clearlake, Hopland, and Ukiah
642 AM PDT Sat Jun 13 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT THIS EVENING...

* WHAT...High temperatures of 96 to 102 expected for most valley
  locations.  Moderate to Major HeatRisk expected.

* WHERE...Lake County, and Southeastern Interior Mendocino.

* WHEN...Until 10 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

&&

$$

CAZ102-140500-
/O.CON.KEKA.HT.Y.0002.260613T1800Z-260617T0500Z/
Interior Del Norte-
Including Gasquet
642 AM PDT Sat Jun 13 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 10 PM
PDT TUESDAY...

* WHAT...High temperatures of 95 to 102 for the warmer interior
  valleys. Moderate to major HeatRisk expected

* WHERE...Interior Del Norte.

* WHEN...From 11 AM this morning to 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ105-140500-
/O.CON.KEKA.HT.Y.0002.260613T1800Z-260617T0500Z/
Northeastern Interior Humboldt-
Including Hoopa, Orleans, Weitchpec, and Willow Creek
642 AM PDT Sat Jun 13 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 10 PM
PDT TUESDAY...

* WHAT...High temperatures of 99 to 110 for the interior valleys.
  Moderate to Major HeatRisk expected.

* WHERE...Northeastern Interior Humboldt.

* WHEN...From 11 AM this morning to 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ116-140500-
/O.CON.KEKA.HT.Y.0002.260613T1800Z-260617T0500Z/
Northwestern and Central Trinity-
Including Big Bar, Del Loma, Junction City, Helena, Weaverville, and
Douglas City
642 AM PDT Sat Jun 13 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 10 PM
PDT TUESDAY...

* WHAT...High temperatures of 100 to 112. Moderate to Major HeatRisk
  expected.

* WHERE...Northwestern and Central Trinity.

* WHEN...From 11 AM this morning to 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ108-140500-
/O.CON.KEKA.HT.Y.0002.260614T1800Z-260617T0500Z/
Southern Trinity-
Including Hyampom, Forest Glen, Zenia, Peanut, Hayfork, and Ruth
642 AM PDT Sat Jun 13 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM SUNDAY TO 10 PM PDT
TUESDAY...

* WHAT...High temperatures of 99 to 105 for most valleys. Moderate to
  Major HeatRisk expected.

* WHERE...Southern Trinity.

* WHEN...From 11 AM Sunday to 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ111-140500-
/O.CON.KEKA.HT.Y.0002.260614T1800Z-260617T0500Z/
Northeastern Interior Mendocino-
Including Covelo
642 AM PDT Sat Jun 13 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM SUNDAY TO 10 PM PDT
TUESDAY...

* WHAT...High temperatures of 99 to 105. Moderate to Major HeatRisk
  expected.

* WHERE...Northeastern Interior Mendocino.

* WHEN...From 11 AM Sunday to 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ117-140500-
/O.CON.KEKA.HT.Y.0002.260614T1800Z-260617T0500Z/
Northeastern Trinity-
Including Carrville and Trinity Center
642 AM PDT Sat Jun 13 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM SUNDAY TO 10 PM PDT
TUESDAY...

* WHAT...High temperatures of 99 to 105 for most valleys. Moderate to
  Major HeatRisk expected.

* WHERE...Northeastern Trinity.

* WHEN...From 11 AM Sunday to 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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 hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

JB

555 
WWUS76 KEKA 140500
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
1000 PM PDT Sat Jun 13 2026

CAZ113-114-118>120-140600-
/O.EXP.KEKA.HT.Y.0001.000000T0000Z-260614T0500Z/
Southeastern Interior Mendocino-Northern Lake-Western Lake-
Southwestern Lake-Eastern Lake-
Including Ukiah, Clearlake Park, Middletown, Clearlake, Redwood
Valley, Cobb, Calpella, Knobcone Camp, Lakeport, Talmage, Hopland,
Gravelly Valley Airport, Upper Lake, Hidden Valley Lake, and Finley
1000 PM PDT Sat Jun 13 2026

...HEAT ADVISORY HAS EXPIRED...

$$

CAZ102-141800-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Interior Del Norte-
Including Gasquet
1000 PM PDT Sat Jun 13 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT TUESDAY...

* WHAT...High temperatures of 95 to 102 for the warmer interior
  valleys. Moderate to major HeatRisk expected

* WHERE...Interior Del Norte.

* WHEN...Until 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ105-141800-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Northeastern Interior Humboldt-
Including Orleans, Willow Creek, Weitchpec, and Hoopa
1000 PM PDT Sat Jun 13 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT TUESDAY...

* WHAT...High temperatures of 99 to 110 for the interior valleys.
  Moderate to Major HeatRisk expected.

* WHERE...Northeastern Interior Humboldt.

* WHEN...Until 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ116-141800-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Northwestern and Central Trinity-
Including Big Bar, Douglas City, Junction City, Weaverville, Del
Loma, and Helena
1000 PM PDT Sat Jun 13 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT TUESDAY...

* WHAT...High temperatures of 100 to 112. Moderate to Major HeatRisk
  expected.

* WHERE...Northwestern and Central Trinity.

* WHEN...Until 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ108-141800-
/O.CON.KEKA.HT.Y.0002.260614T1800Z-260617T0500Z/
Southern Trinity-
Including Hayfork, Forest Glen, Ruth, Zenia, Hyampom, and Peanut
1000 PM PDT Sat Jun 13 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM SUNDAY TO 10 PM PDT
TUESDAY...

* WHAT...High temperatures of 99 to 105 for most valleys. Moderate to
  Major HeatRisk expected.

* WHERE...Southern Trinity.

* WHEN...From 11 AM Sunday to 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ111-141800-
/O.CON.KEKA.HT.Y.0002.260614T1800Z-260617T0500Z/
Northeastern Interior Mendocino-
Including Covelo
1000 PM PDT Sat Jun 13 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM SUNDAY TO 10 PM PDT
TUESDAY...

* WHAT...High temperatures of 99 to 105. Moderate to Major HeatRisk
  expected.

* WHERE...Northeastern Interior Mendocino.

* WHEN...From 11 AM Sunday to 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ117-141800-
/O.CON.KEKA.HT.Y.0002.260614T1800Z-260617T0500Z/
Northeastern Trinity-
Including Carrville and Trinity Center
1000 PM PDT Sat Jun 13 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM SUNDAY TO 10 PM PDT
TUESDAY...

* WHAT...High temperatures of 99 to 105 for most valleys. Moderate to
  Major HeatRisk expected.

* WHERE...Northeastern Trinity.

* WHEN...From 11 AM Sunday to 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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 hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

JHW

865 
WWUS76 KEKA 141801
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
1101 AM PDT Sun Jun 14 2026

CAZ114-150600-
/O.EXB.KEKA.HT.Y.0002.260615T1800Z-260617T0500Z/
Northern Lake-
Including Gravelly Valley Airport
1101 AM PDT Sun Jun 14 2026

...HEAT ADVISORY IN EFFECT FROM 11 AM MONDAY TO 10 PM PDT TUESDAY...

* WHAT...High temperatures of 98 to 104 for most valleys. Moderate to
  Major HeatRisk expected.

* WHERE...Northern Lake.

* WHEN...From 11 AM Monday to 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

&&

$$

CAZ102-150600-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Interior Del Norte-
Including Gasquet
1101 AM PDT Sun Jun 14 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT TUESDAY...

* WHAT...High temperatures of 97 to 100 for the warmer interior
  valleys. Moderate to major HeatRisk expected

* WHERE...Interior Del Norte.

* WHEN...Until 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ105-150600-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Northeastern Interior Humboldt-
Including Willow Creek, Weitchpec, Orleans, and Hoopa
1101 AM PDT Sun Jun 14 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT TUESDAY...

* WHAT...High temperatures of 99 to 110 for the interior valleys.
  Moderate to Major HeatRisk expected.

* WHERE...Northeastern Interior Humboldt.

* WHEN...Until 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ116-150600-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Northwestern and Central Trinity-
Including Helena, Big Bar, Weaverville, Del Loma, Douglas City, and
Junction City
1101 AM PDT Sun Jun 14 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT TUESDAY...

* WHAT...High temperatures of 100 to 112. Moderate to Major HeatRisk
  expected.

* WHERE...Northwestern and Central Trinity.

* WHEN...Until 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ108-150600-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Southern Trinity-
Including Zenia, Hyampom, Ruth, Forest Glen, Peanut, and Hayfork
1101 AM PDT Sun Jun 14 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT TUESDAY...

* WHAT...High temperatures of 99 to 102 for most valleys. Moderate to
  Major HeatRisk expected.

* WHERE...Southern Trinity.

* WHEN...Until 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ111-150600-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Northeastern Interior Mendocino-
Including Covelo
1101 AM PDT Sun Jun 14 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT TUESDAY...

* WHAT...High temperatures of 99 to 102. Moderate to Major HeatRisk
  expected.

* WHERE...Northeastern Interior Mendocino.

* WHEN...Until 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ117-150600-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Northeastern Trinity-
Including Carrville and Trinity Center
1101 AM PDT Sun Jun 14 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT TUESDAY...

* WHAT...High temperatures of 99 to 105 for most valleys. Moderate to
  Major HeatRisk expected.

* WHERE...Northeastern Trinity.

* WHEN...Until 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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 hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

JHW

814 
WWUS76 KEKA 150554
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
1054 PM PDT Sun Jun 14 2026

CAZ102-151700-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Interior Del Norte-
Including Gasquet
1054 PM PDT Sun Jun 14 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT TUESDAY...

* WHAT...High temperatures of 97 to 100 for the warmer interior
  valleys. Moderate to major HeatRisk expected

* WHERE...Interior Del Norte.

* WHEN...Until 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ105-151700-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Northeastern Interior Humboldt-
Including Hoopa, Willow Creek, Weitchpec, and Orleans
1054 PM PDT Sun Jun 14 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT TUESDAY...

* WHAT...High temperatures of 99 to 110 for the interior valleys.
  Moderate to Major HeatRisk expected.

* WHERE...Northeastern Interior Humboldt.

* WHEN...Until 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ108-151700-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Southern Trinity-
Including Zenia, Ruth, Forest Glen, Hyampom, Hayfork, and Peanut
1054 PM PDT Sun Jun 14 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT TUESDAY...

* WHAT...High temperatures of 99 to 102 for most valleys. Moderate to
  Major HeatRisk expected.

* WHERE...Southern Trinity.

* WHEN...Until 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ111-151700-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Northeastern Interior Mendocino-
Including Covelo
1054 PM PDT Sun Jun 14 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT TUESDAY...

* WHAT...High temperatures of 99 to 102. Moderate to Major HeatRisk
  expected.

* WHERE...Northeastern Interior Mendocino.

* WHEN...Until 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ116-151700-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Northwestern and Central Trinity-
Including Weaverville, Junction City, Del Loma, Big Bar, Douglas
City, and Helena
1054 PM PDT Sun Jun 14 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT TUESDAY...

* WHAT...High temperatures of 100 to 112. Moderate to Major HeatRisk
  expected.

* WHERE...Northwestern and Central Trinity.

* WHEN...Until 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ117-151700-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Northeastern Trinity-
Including Carrville and Trinity Center
1054 PM PDT Sun Jun 14 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT TUESDAY...

* WHAT...High temperatures of 99 to 105 for most valleys. Moderate to
  Major HeatRisk expected.

* WHERE...Northeastern Trinity.

* WHEN...Until 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ114-151700-
/O.CON.KEKA.HT.Y.0002.260615T1800Z-260617T0500Z/
Northern Lake-
Including Gravelly Valley Airport
1054 PM PDT Sun Jun 14 2026

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM MONDAY TO 10 PM PDT
TUESDAY...

* WHAT...High temperatures of 98 to 104 for most valleys. Moderate to
  Major HeatRisk expected.

* WHERE...Northern Lake.

* WHEN...From 11 AM Monday to 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

JB

560 
WWUS76 KEKA 151658
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
958 AM PDT Mon Jun 15 2026

CAZ102-160600-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Interior Del Norte-
Including Gasquet
958 AM PDT Mon Jun 15 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT TUESDAY...

* WHAT...High temperatures of 97 to 100 for the warmer interior
  valleys. Moderate to major HeatRisk expected

* WHERE...Interior Del Norte.

* WHEN...Until 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ105-160600-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Northeastern Interior Humboldt-
Including Hoopa, Weitchpec, Willow Creek, and Orleans
958 AM PDT Mon Jun 15 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT TUESDAY...

* WHAT...High temperatures of 99 to 110 for the interior valleys.
  Moderate to Major HeatRisk expected.

* WHERE...Northeastern Interior Humboldt.

* WHEN...Until 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ108-160600-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Southern Trinity-
Including Hyampom, Ruth, Zenia, Hayfork, Forest Glen, and Peanut
958 AM PDT Mon Jun 15 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT TUESDAY...

* WHAT...High temperatures of 99 to 102 for most valleys. Moderate to
  Major HeatRisk expected.

* WHERE...Southern Trinity.

* WHEN...Until 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ111-160600-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Northeastern Interior Mendocino-
Including Covelo
958 AM PDT Mon Jun 15 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT TUESDAY...

* WHAT...High temperatures of 99 to 102. Moderate to Major HeatRisk
  expected.

* WHERE...Northeastern Interior Mendocino.

* WHEN...Until 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ116-160600-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Northwestern and Central Trinity-
Including Weaverville, Douglas City, Del Loma, Helena, Junction City,
and Big Bar
958 AM PDT Mon Jun 15 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT TUESDAY...

* WHAT...High temperatures of 100 to 112. Moderate to Major HeatRisk
  expected.

* WHERE...Northwestern and Central Trinity.

* WHEN...Until 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ117-160600-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Northeastern Trinity-
Including Trinity Center and Carrville
958 AM PDT Mon Jun 15 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT TUESDAY...

* WHAT...High temperatures of 99 to 105 for most valleys. Moderate to
  Major HeatRisk expected.

* WHERE...Northeastern Trinity.

* WHEN...Until 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ114-160600-
/O.CON.KEKA.HT.Y.0002.260615T1800Z-260617T0500Z/
Northern Lake-
Including Gravelly Valley Airport
958 AM PDT Mon Jun 15 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT TUESDAY...

* WHAT...High temperatures of 98 to 104 for most valleys. Moderate to
  Major HeatRisk expected.

* WHERE...Northern Lake.

* WHEN...Until 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

&&

$$

For hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

JHW

556 
WWUS76 KEKA 160519
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
1019 PM PDT Mon Jun 15 2026

CAZ102-161330-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Interior Del Norte-
Including Gasquet
1019 PM PDT Mon Jun 15 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT TUESDAY...

* WHAT...High temperatures of 97 to 100 for the warmer interior
  valleys. Moderate to major HeatRisk expected

* WHERE...Interior Del Norte.

* WHEN...Until 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ105-161330-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Northeastern Interior Humboldt-
Including Weitchpec, Willow Creek, Orleans, and Hoopa
1019 PM PDT Mon Jun 15 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT TUESDAY...

* WHAT...High temperatures of 99 to 110 for the interior valleys.
  Moderate to Major HeatRisk expected.

* WHERE...Northeastern Interior Humboldt.

* WHEN...Until 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ108-161330-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Southern Trinity-
Including Peanut, Hayfork, Ruth, Zenia, Hyampom, and Forest Glen
1019 PM PDT Mon Jun 15 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT TUESDAY...

* WHAT...High temperatures of 99 to 102 for most valleys. Moderate to
  Major HeatRisk expected.

* WHERE...Southern Trinity.

* WHEN...Until 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ111-161330-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Northeastern Interior Mendocino-
Including Covelo
1019 PM PDT Mon Jun 15 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT TUESDAY...

* WHAT...High temperatures of 99 to 102. Moderate to Major HeatRisk
  expected.

* WHERE...Northeastern Interior Mendocino.

* WHEN...Until 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ114-161330-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Northern Lake-
Including Gravelly Valley Airport
1019 PM PDT Mon Jun 15 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT TUESDAY...

* WHAT...High temperatures of 98 to 104 for most valleys. Moderate to
  Major HeatRisk expected.

* WHERE...Northern Lake.

* WHEN...Until 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

&&

$$

CAZ116-161330-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Northwestern and Central Trinity-
Including Weaverville, Junction City, Del Loma, Helena, Big Bar, and
Douglas City
1019 PM PDT Mon Jun 15 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT TUESDAY...

* WHAT...High temperatures of 100 to 112. Moderate to Major HeatRisk
  expected.

* WHERE...Northwestern and Central Trinity.

* WHEN...Until 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ117-161330-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Northeastern Trinity-
Including Carrville and Trinity Center
1019 PM PDT Mon Jun 15 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT TUESDAY...

* WHAT...High temperatures of 99 to 105 for most valleys. Moderate to
  Major HeatRisk expected.

* WHERE...Northeastern Trinity.

* WHEN...Until 10 PM PDT Tuesday.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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 hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

JJW

108 
WWUS76 KEKA 161048
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
348 AM PDT Tue Jun 16 2026

CAZ102-161900-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Interior Del Norte-
Including Gasquet
348 AM PDT Tue Jun 16 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT THIS EVENING...

* WHAT...High temperatures of 97 to 100 for the warmer interior
  valleys. Moderate to major HeatRisk expected

* WHERE...Interior Del Norte.

* WHEN...Until 10 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ105-161900-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Northeastern Interior Humboldt-
Including Willow Creek, Hoopa, Weitchpec, and Orleans
348 AM PDT Tue Jun 16 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT THIS EVENING...

* WHAT...High temperatures of 99 to 110 for the interior valleys.
  Moderate to Major HeatRisk expected.

* WHERE...Northeastern Interior Humboldt.

* WHEN...Until 10 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ108-161900-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Southern Trinity-
Including Peanut, Ruth, Hyampom, Forest Glen, Zenia, and Hayfork
348 AM PDT Tue Jun 16 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT THIS EVENING...

* WHAT...High temperatures of 99 to 102 for most valleys. Moderate to
  Major HeatRisk expected.

* WHERE...Southern Trinity.

* WHEN...Until 10 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ111-161900-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Northeastern Interior Mendocino-
Including Covelo
348 AM PDT Tue Jun 16 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT THIS EVENING...

* WHAT...High temperatures of 99 to 102. Moderate to Major HeatRisk
  expected.

* WHERE...Northeastern Interior Mendocino.

* WHEN...Until 10 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ114-161900-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Northern Lake-
Including Gravelly Valley Airport
348 AM PDT Tue Jun 16 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT THIS EVENING...

* WHAT...High temperatures of 98 to 104 for most valleys. Moderate to
  Major HeatRisk expected.

* WHERE...Northern Lake.

* WHEN...Until 10 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

&&

$$

CAZ116-161900-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Northwestern and Central Trinity-
Including Big Bar, Junction City, Del Loma, Helena, Douglas City, and
Weaverville
348 AM PDT Tue Jun 16 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT THIS EVENING...

* WHAT...High temperatures of 100 to 112. Moderate to Major HeatRisk
  expected.

* WHERE...Northwestern and Central Trinity.

* WHEN...Until 10 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ117-161900-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Northeastern Trinity-
Including Carrville and Trinity Center
348 AM PDT Tue Jun 16 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT THIS EVENING...

* WHAT...High temperatures of 99 to 105 for most valleys. Moderate to
  Major HeatRisk expected.

* WHERE...Northeastern Trinity.

* WHEN...Until 10 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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 hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

EYS

364 
WWUS76 KEKA 161858
NPWEKA

URGENT - WEATHER MESSAGE
National Weather Service Eureka CA
1158 AM PDT Tue Jun 16 2026

CAZ102-170500-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Interior Del Norte-
Including Gasquet
1158 AM PDT Tue Jun 16 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT THIS EVENING...

* WHAT...High temperatures of 97 to 100 for the warmer interior
  valleys. Moderate to major HeatRisk expected

* WHERE...Interior Del Norte.

* WHEN...Until 10 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ105-170500-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Northeastern Interior Humboldt-
Including Willow Creek, Orleans, Weitchpec, and Hoopa
1158 AM PDT Tue Jun 16 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT THIS EVENING...

* WHAT...High temperatures of 99 to 110 for the interior valleys.
  Moderate to Major HeatRisk expected.

* WHERE...Northeastern Interior Humboldt.

* WHEN...Until 10 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ108-170500-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Southern Trinity-
Including Hayfork, Hyampom, Zenia, Peanut, Forest Glen, and Ruth
1158 AM PDT Tue Jun 16 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT THIS EVENING...

* WHAT...High temperatures of 99 to 102 for most valleys. Moderate to
  Major HeatRisk expected.

* WHERE...Southern Trinity.

* WHEN...Until 10 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ111-170500-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Northeastern Interior Mendocino-
Including Covelo
1158 AM PDT Tue Jun 16 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT THIS EVENING...

* WHAT...High temperatures of 99 to 102. Moderate to Major HeatRisk
  expected.

* WHERE...Northeastern Interior Mendocino.

* WHEN...Until 10 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ114-170500-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Northern Lake-
Including Gravelly Valley Airport
1158 AM PDT Tue Jun 16 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT THIS EVENING...

* WHAT...High temperatures of 98 to 104 for most valleys. Moderate to
  Major HeatRisk expected.

* WHERE...Northern Lake.

* WHEN...Until 10 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

&&

$$

CAZ116-170500-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Northwestern and Central Trinity-
Including Weaverville, Douglas City, Big Bar, Helena, Junction City,
and Del Loma
1158 AM PDT Tue Jun 16 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT THIS EVENING...

* WHAT...High temperatures of 100 to 112. Moderate to Major HeatRisk
  expected.

* WHERE...Northwestern and Central Trinity.

* WHEN...Until 10 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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.

&&

$$

CAZ117-170500-
/O.CON.KEKA.HT.Y.0002.000000T0000Z-260617T0500Z/
Northeastern Trinity-
Including Carrville and Trinity Center
1158 AM PDT Tue Jun 16 2026

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PDT THIS EVENING...

* WHAT...High temperatures of 99 to 105 for most valleys. Moderate to
  Major HeatRisk expected.

* WHERE...Northeastern Trinity.

* WHEN...Until 10 PM PDT this evening.

* IMPACTS...Hot temperatures may cause heat illnesses especially for
  those without cooling or hydration.

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.

Take extra precautions when outside. Wear lightweight and loose
fitting clothing. Try to limit strenuous activities to early morning
or evening. Take action when you see symptoms of heat exhaustion and
heat stroke.

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 hazard areas see https://www.weather.gov/wrh/hazards/?wfo=eka

JHW

AREA FORECAST DISCUSSION
National Weather Service Eureka CA
1245 AM PDT Fri Jun 12 2026

.KEY MESSAGES...

-  Temperatures will warm quickly with moderate to major HeatRisk
   expected through the weekend and into early next week.

-  Coastal stratus is possible tonight south of Cape Mendocino.

-  Potential cooling trend in the inland areas starting on
   Wednesday.

.SYNOPSIS...High pressure continues to build into the area with
hot temperatures expected into early next week. The near coastal
and coastal areas may start to see more marine influence over the
weekend and into early next week while Trinity county is expected
to see the hottest temperatures Monday and Tuesday. Cooler
temperatures are possible starting on Wednesday.

&&

.DISCUSSION...High pressure continues to build in across the area
and the interior is expected to see a few hot days of this
heatwave. A southerly surge of clouds could make its way up to
Ukiah but the likelihood of that depends on available moisture at
low levels and advected stratus into the Russian River Valley and
Anderson Valley. This will likely start to cool temperatures at
the immediate coast and inland to areas as far as Boonville or so.
Overnight lows will likely drop into the 50s in most of the
valleys, however the ridges are expected to stay much warmer,
likely in the 70s. This will increase the heat risk in these
areas.

For the weekend a weak upper level trough is expected to drop down
from the north. This is expected to bring some instability, but
current moisture profiles look like they remain too dry for any
thunderstorms. Temperatures are expected to remain more steady
fluctuating somewhere around 100 in the afternoons. The winds
southerly winds along the Mendocino coast are expected to slightly
increase and keep the stratus in place. The high pressure is
expected to keep the marine layer fairly shallow and it may mix
out each afternoon. Sunday it looks fairly certain that the
marine layer will be well north of Cape Mendocino as the winds get
lighter. Monday and Tuesday high pressure continues to the
strengthen over the area and is expected to some of the hottest
temperatures of this heat wave to Trinity county. Areas closer to
the coast there is more uncertainty and this will need to be
monitored as it gets closer.

Wednesday the high pressure is expected to start to break down
and cooler temperatures are expected aloft. This will cool
temperatures across the area and likely deepen the marine layer.
MKK

&&

.AVIATION...VFR conditions prevail at the coastal terminals
overnight with minimal cloud cover as offshore wind continues.
Southeasterly winds have become the dominant regime as the high
pressure dome expands off the coast of the PACNW. Diurnal patterns
will continue with wind gusts returning Friday afternoon, at a
lighter clip than previous days. Models hint at a few hours of
reduced visibility around 12z or so at KCEC and KACV. The
southerly push overnight could push light fog or stratus up the
valley towards KUKI but moisture is lacking with the dry easterly
winds as a source. /EYS

&&

.MARINE...Gale strength northerlies persist through the outer zones
through Saturday. The southern outer zone will have less coverage
Friday, mainly around Cape Mendocino and westward. Northerly winds
and steep seas will continue advisory conditions for the inner
zones. Strengthening northerlies over the northern outer waters
Friday will build steep and hazardous seas up to 14 ft. The northern
inner waters will have to be watched for a brief surge of hazardous
seas late Friday. Currently it looks like the gales will continue
beyond 10 to 20 nm north of Cape Mendocino on Saturday, then start
to diminish on Sunday and this allows a southerly surge to move
northward. Winds are generally expected to remain lighter into early
next week.

&&

.FIRE WEATHER...Temperatures are expected to remain hot and dry
into early next. Over the weekend a shortwave moving down form the
Pacific Northwest is expected to increase instability and this may
lead to increased mixing heights. It doesn't look like there will
be enough moisture in NW California for any thunderstorms, that is
expected to remain well east and south of the area. Early next
week temperatures may climb slightly more and the hottest
temperatures of the heat wave are expected. Wednesday into late in
the week cooler temperatures are expected. This may also bring
stronger winds or possibly thunderstorms depending on how the
pattern evolves. MKK

&&

.EKA WATCHES/WARNINGS/ADVISORIES...
CA...
     Heat Advisory until 10 PM PDT Friday for CAZ113-114-118>120.

NORTHWEST CALIFORNIA COASTAL WATERS...
     Small Craft Advisory until 5 PM PDT Friday for PZZ450.

     Small Craft Advisory until 9 AM PDT Friday for PZZ455.

     Gale Warning until 9 PM PDT Saturday for PZZ470.

     Gale Warning until 9 AM PDT Friday for PZZ475.

&&

NOTE: The full forecast discussion is now regularly issued between
10 am/pm and 1 pm/am. Additional updates will be issued as needed.

Visit us at https://www.weather.gov/eureka

Follow us on Facebook and Twitter at:
https://www.facebook.com/NWSEureka
https://www.twitter.com/NWSEureka

For forecast zone information
see the forecast zone map online:
https://www.weather.gov/images/eka/zonemap.png