Alert archive / California / Wind Advisories in 2020

Wind Advisory 7, NWS San Francisco Bay Area, CA

October 14, 2020Marin County, Napa County, Sonoma County, California

NWS San Francisco Bay Area, CA issued this wind advisory at Oct 14, 2020, 10:54 AM PDT for Marin County, Napa County, Sonoma County, California. It took effect at Oct 14, 2020, 10:00 PM PDT. It was in force for 13 hr.

The area

The counties it named.

The facts

Issued
Oct 14, 2020, 10:54 AM PDT (17:54 UTC)
In effect from
Oct 14, 2020, 10:00 PM PDT
Expired
Oct 15, 2020, 11:00 AM PDT
In force
13 hr
Issued by
NWS San Francisco Bay Area, CA

Counties Marin County, CA, Napa County, CA, Sonoma County, CA

The radar

The Sacramento radar (KDAX), 88 km from the middle of the area, began a volume at 17:53 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.

The nearest sounding before it

Oakland, CA (KOAK), launched 12:00Z, 5.9 hours before the alert went out and 81 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, Oakland, CA at 12:00Z on 2020-10-14Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Oakland, CA at 12:00Z on 2020-10-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 17 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
2223 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
17 m²/s²
0-3 km storm-relative helicity
111 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

534 
WWUS76 KMTR 141754
NPWMTR

URGENT - WEATHER MESSAGE
National Weather Service San Francisco Bay Area
1054 AM PDT Wed Oct 14 2020

...Gusty offshore winds will impact the North Bay tonight and
early Thursday...

CAZ506-507-150500-
/O.NEW.KMTR.WI.Y.0007.201015T0500Z-201015T1800Z/
North Bay Interior Valleys-North Bay Mountains-
Including the cities of Santa Rosa, South Santa Rosa, Napa, 
San Rafael, Petaluma, Novato, Rohnert Park, Angwin, 
Lagunitas-Forest Knolls, and Woodacre
1054 AM PDT Wed Oct 14 2020

...WIND ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 11 AM PDT
THURSDAY...

* WHAT...North to northeast winds 10 to 20 mph with gusts 35 to 
  45 mph expected. Gusts of 45 to 55 mph possible at the higher 
  elevations of northern Napa and northeast Sonoma Counties.


* WHERE...North Bay Interior Valleys (specifically the foothills) 
  and North Bay Mountains.

* WHEN...From 10 PM this evening to 11 AM PDT Thursday.

* IMPACTS...Gusty winds could blow around unsecured objects. 
  Tree limbs could be blown down and a few power outages may 
  result.

* ADDITIONAL DETAILS...Fire weakened trees in the burn areas of 
  the Glass Fire and the LNU Lightning Complex could also be blown
  down.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

&&

$$

For more information from the National Weather Service visit
http://weather.gov/mtr
4 follow-up statements
775 
WWUS76 KMTR 141934
NPWMTR

URGENT - WEATHER MESSAGE
National Weather Service San Francisco Bay Area
1234 PM PDT Wed Oct 14 2020

...Gusty offshore winds will impact the North Bay tonight and
early Thursday...

...Increased Heat Risk concerns on Thursday and Friday with well
above normal temperatures...

.Hot daytime temperatures and mild to warm overnight lows are
forecast Thursday and Friday. Near record to record temperatures 
are possible for a few areas. This will result in continued 
increased risk of heat related illness. In addition, breezy to
gusty winds are expected Wednesday evening through early 
Thursday. Strongest winds will be the higher elevations, 
especially the North Bay. 

CAZ506-507-150500-
/O.NEW.KMTR.HT.Y.0009.201015T1800Z-201017T0400Z/
/O.CON.KMTR.WI.Y.0007.201015T0500Z-201015T1800Z/
North Bay Interior Valleys-North Bay Mountains-
Including the cities of Santa Rosa, South Santa Rosa, Napa, 
San Rafael, Petaluma, Novato, Rohnert Park, Angwin, 
Lagunitas-Forest Knolls, and Woodacre
1234 PM PDT Wed Oct 14 2020

...WIND ADVISORY REMAINS IN EFFECT FROM 10 PM THIS EVENING TO
11 AM PDT THURSDAY...
...HEAT ADVISORY IN EFFECT FROM 11 AM THURSDAY TO 9 PM PDT
FRIDAY...

* WHAT...For the Wind Advisory, North to northeast winds 10 to 20
  mph with gusts 35 to 45 mph expected. Gusts of 45 to 55 mph
  possible at the higher elevations of northern Napa and northeast
  Sonoma Counties. For the Heat Advisory, high temperatures
  Thursday and Friday in the mid 90s to 101 degrees. Low
  temperatures in valleys upper 50s to lower 60s and in the hills
  mid 60s to near 80 degrees.

* WHERE...North Bay Interior Valleys and North Bay Mountains.

* WHEN...For the Wind Advisory, from 10 PM this evening to 11 AM 
  PDT Thursday. For the Heat Advisory, from 11 AM Thursday to 9 
  PM PDT Friday.

* IMPACTS...Gusty winds could blow around unsecured objects. Tree
  limbs could be blown down and a few power outages may result.
  Hot temperatures may cause heat illnesses to occur.

* ADDITIONAL DETAILS...Fire weakened trees in the burn areas of 
  the Glass Fire and the LNU Lightning Complex could also be blown
  down.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

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.

&&

$$

CAZ006-505-508>513-516>518-528>530-150500-
/O.NEW.KMTR.HT.Y.0009.201015T1800Z-201017T0400Z/
San Francisco-
Coastal North Bay Including Point Reyes National Seashore-
San Francisco Bay Shoreline-San Francisco Peninsula Coast-
East Bay Interior Valleys-East Bay Hills and the Diablo Range-
Santa Cruz Mountains-Santa Clara Valley Including San Jose-
Southern Salinas Valley/Arroyo Seco and Lake San Antonio-
Santa Lucia Mountains and Los Padres National Forest-
Mountains Of San Benito County And Interior Monterey County
Including Pinnacles National Park-
Northern Salinas Valley/Hollister Valley and Carmel Valley-
Northern Monterey Bay-Southern Monterey Bay and Big Sur Coast-
Including the cities of San Francisco, Tamalpais-Homestead, 
Sausalito, Oakland, Fremont, Hayward, Daly City, Berkeley, 
Pacifica, Concord, Antioch, Livermore, Walnut Creek, Pleasanton, 
Pittsburg, San Ramon, Blackhawk, Scotts Valley, Boulder Creek, 
Day Valley, San Jose, Greenfield, King City, Salinas, Santa Cruz,
Watsonville, Live Oak, Seaside, Monterey, and Marina
1234 PM PDT Wed Oct 14 2020

...HEAT ADVISORY IN EFFECT FROM 11 AM THURSDAY TO 9 PM PDT
FRIDAY...

* WHAT...High temperatures are forecast to range from 15 to 25
  degrees above normal for most interior locations. Temperatures
  in the upper 80s to low 100s are expected, with the hottest
  inland areas pushing to 101-103. Near record to record- breaking
  temperatures are forecasted. Additionally, overnight
  temperatures will only cool into the upper 50s to lower 60s 
  near the coast and in the cooler valleys while 70s to lower 80s 
  are likely in the hills, providing little relief from the 
  daytime heat.

* WHERE...Bay Area and Central Coast.

* WHEN...From 11 AM Thursday to 9 PM PDT Friday.

* 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/mtr
945 
WWUS76 KMTR 150337
NPWMTR

URGENT - WEATHER MESSAGE
National Weather Service San Francisco Bay Area
837 PM PDT Wed Oct 14 2020

CAZ506-507-151300-
/O.CON.KMTR.WI.Y.0007.201015T0500Z-201015T1800Z/
/O.CON.KMTR.HT.Y.0009.201015T1800Z-201017T0400Z/
North Bay Interior Valleys-North Bay Mountains-
Including the cities of Santa Rosa, South Santa Rosa, Napa, 
San Rafael, Petaluma, Novato, Rohnert Park, Angwin, 
Lagunitas-Forest Knolls, and Woodacre
837 PM PDT Wed Oct 14 2020

...WIND ADVISORY REMAINS IN EFFECT UNTIL 11 AM PDT THURSDAY...
...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THURSDAY TO 9 PM
PDT FRIDAY...

* WHAT...For the Wind Advisory, North to northeast winds 10 to 
  20 mph with gusts 35 to 45 mph expected. Gusts of 45 to 55 mph 
  possible at the higher elevations of northern Napa and 
  northeast Sonoma Counties. For the Heat Advisory, high 
  temperatures Thursday and Friday in the mid 90s to 101 
  degrees. Low temperatures in valleys upper 50s to lower 60s 
  and in the hills mid 60s to near 80 degrees.

* WHERE...North Bay Interior Valleys and North Bay Mountains.

* WHEN...For the Wind Advisory, from 10 PM this evening to 11 AM 
  PDT Thursday. For the Heat Advisory, from 11 AM Thursday to 9 
  PM PDT Friday.

* IMPACTS...Gusty winds could blow around unsecured objects. 
  Tree limbs could be blown down and a few power outages may 
  result. Hot temperatures may cause heat illnesses to occur.

* ADDITIONAL DETAILS...Fire weakened trees in the burn areas of 
  the Glass Fire and the LNU Lightning Complex could also be 
  blown down.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

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.

&&

$$

CAZ006-505-508>513-516>518-528>530-151300-
/O.CON.KMTR.HT.Y.0009.201015T1800Z-201017T0400Z/
San Francisco-
Coastal North Bay Including Point Reyes National Seashore-
San Francisco Bay Shoreline-San Francisco Peninsula Coast-
East Bay Interior Valleys-East Bay Hills and the Diablo Range-
Santa Cruz Mountains-Santa Clara Valley Including San Jose-
Southern Salinas Valley/Arroyo Seco and Lake San Antonio-
Santa Lucia Mountains and Los Padres National Forest-
Mountains Of San Benito County And Interior Monterey County
Including Pinnacles National Park-
Northern Salinas Valley/Hollister Valley and Carmel Valley-
Northern Monterey Bay-Southern Monterey Bay and Big Sur Coast-
Including the cities of San Francisco, Tamalpais-Homestead, 
Sausalito, Oakland, Fremont, Hayward, Daly City, Berkeley, 
Pacifica, Concord, Antioch, Livermore, Walnut Creek, Pleasanton, 
Pittsburg, San Ramon, Blackhawk, Scotts Valley, Boulder Creek, 
Day Valley, San Jose, Greenfield, King City, Salinas, Santa Cruz,
Watsonville, Live Oak, Seaside, Monterey, and Marina
837 PM PDT Wed Oct 14 2020

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THURSDAY TO 9 PM
PDT FRIDAY...

* WHAT...High temperatures are forecast to range from 15 to 25 
  degrees above normal for most interior locations. Temperatures 
  in the upper 80s to low 100s are expected, with the hottest 
  inland areas pushing to 101-103. Near record to record- 
  breaking temperatures are forecasted. Additionally, overnight 
  temperatures will only cool into the upper 50s to lower 60s 
  near the coast and in the cooler valleys while 70s to lower 
  80s are likely in the hills, providing little relief from the 
  daytime heat.

* WHERE...Bay Area and Central Coast.

* WHEN...From 11 AM Thursday to 9 PM PDT Friday.

* 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/mtr
105 
WWUS76 KMTR 151309
NPWMTR

URGENT - WEATHER MESSAGE
National Weather Service San Francisco Bay Area
Issued by National Weather Service Los Angeles/Oxnard CA
609 AM PDT Thu Oct 15 2020

CAZ506-507-152200-
/O.CON.KMTR.WI.Y.0007.000000T0000Z-201015T1800Z/
/O.CON.KMTR.HT.Y.0009.201015T1800Z-201017T0400Z/
North Bay Interior Valleys-North Bay Mountains-
Including the cities of Santa Rosa, South Santa Rosa, Napa, 
San Rafael, Petaluma, Novato, Rohnert Park, Angwin, 
Lagunitas-Forest Knolls, and Woodacre
609 AM PDT Thu Oct 15 2020

...WIND ADVISORY REMAINS IN EFFECT UNTIL 11 AM PDT THIS MORNING...
...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
9 PM PDT FRIDAY...

* WHAT...For the Wind Advisory, north winds 5 to 15 mph with gusts
  up to 35 mph. For the Heat Advisory, high temperatures today 
  and Friday in the mid 90s to 101 degrees. Low temperatures in 
  valleys upper 50s to lower 60s and in the hills mid 60s to near 
  80 degrees.

* WHERE...North Bay Mountains and North Bay Interior Valleys.

* WHEN...For the Wind Advisory, until 11 AM PDT this morning. 
  For the Heat Advisory, from 11 AM this morning to 9 PM PDT 
  Friday.

* IMPACTS...Gusty winds could blow around unsecured objects. Tree
  limbs could be blown down and a few power outages may result. Hot
  temperatures may cause heat illnesses to occur.

* ADDITIONAL DETAILS...Fire weakened trees in the burn areas of 
  the Glass Fire and the LNU Lightning Complex could also be 
  blown down.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects.

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.

&&

$$

CAZ006-505-508>513-516>518-528>530-152200-
/O.CON.KMTR.HT.Y.0009.201015T1800Z-201017T0400Z/
San Francisco-
Coastal North Bay Including Point Reyes National Seashore-
San Francisco Bay Shoreline-San Francisco Peninsula Coast-
East Bay Interior Valleys-East Bay Hills and the Diablo Range-
Santa Cruz Mountains-Santa Clara Valley Including San Jose-
Southern Salinas Valley/Arroyo Seco and Lake San Antonio-
Santa Lucia Mountains and Los Padres National Forest-
Mountains Of San Benito County And Interior Monterey County
Including Pinnacles National Park-
Northern Salinas Valley/Hollister Valley and Carmel Valley-
Northern Monterey Bay-Southern Monterey Bay and Big Sur Coast-
Including the cities of San Francisco, Tamalpais-Homestead, 
Sausalito, Oakland, Fremont, Hayward, Daly City, Berkeley, 
Pacifica, Concord, Antioch, Livermore, Walnut Creek, Pleasanton, 
Pittsburg, San Ramon, Blackhawk, Scotts Valley, Boulder Creek, 
Day Valley, San Jose, Greenfield, King City, Salinas, Santa Cruz,
Watsonville, Live Oak, Seaside, Monterey, and Marina
609 AM PDT Thu Oct 15 2020

...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO
9 PM PDT FRIDAY...

* WHAT...High temperatures are forecast to range from 15 to 25 
  degrees above normal for most interior locations. Temperatures 
  in the upper 80s to low 100s are expected, with the hottest 
  inland areas pushing to 101-103. Near record to record- 
  breaking temperatures are forecasted. Additionally, overnight 
  temperatures will only cool into the upper 50s to lower 60s 
  near the coast and in the cooler valleys while 70s to lower 
  80s are likely in the hills, providing little relief from the 
  daytime heat.

* WHERE...Bay Area and Central Coast.

* WHEN...From 11 AM this morning to 9 PM PDT Friday.

* 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/mtr
484 
WWUS76 KMTR 151749
NPWMTR

URGENT - WEATHER MESSAGE
National Weather Service San Francisco Bay Area
1049 AM PDT Thu Oct 15 2020

CAZ506-507-160500-
/O.EXP.KMTR.WI.Y.0007.000000T0000Z-201015T1800Z/
/O.CON.KMTR.HT.Y.0009.201015T1800Z-201017T0400Z/
North Bay Interior Valleys-North Bay Mountains-
Including the cities of Santa Rosa, South Santa Rosa, Napa, 
San Rafael, Petaluma, Novato, Rohnert Park, Angwin, 
Lagunitas-Forest Knolls, and Woodacre
1049 AM PDT Thu Oct 15 2020

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT FRIDAY...
...WIND ADVISORY WILL EXPIRE AT 11 AM PDT THIS MORNING...

* WHAT...Wind Advisory will be allowed to expire at 11 AM, but
  breezy to gusty conditions will be possible through Friday
  morning over the highest peaks. For the Heat Advisory, high 
  temperatures today and Friday in the mid 90s to 101 degrees. Low
  temperatures in valleys upper 50s to lower 60s and in the hills
  mid 60s to near 80 degrees.

* WHERE...North Bay Mountains and North Bay Interior Valleys.

* WHEN...For the Wind Advisory, until 11 AM PDT this morning. 
  For the Heat Advisory, from 11 AM this morning to 9 PM PDT 
  Friday.

* 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.

&&

$$

CAZ006-505-508>513-516>518-528>530-160500-
/O.CON.KMTR.HT.Y.0009.201015T1800Z-201017T0400Z/
San Francisco-
Coastal North Bay Including Point Reyes National Seashore-
San Francisco Bay Shoreline-San Francisco Peninsula Coast-
East Bay Interior Valleys-East Bay Hills and the Diablo Range-
Santa Cruz Mountains-Santa Clara Valley Including San Jose-
Southern Salinas Valley/Arroyo Seco and Lake San Antonio-
Santa Lucia Mountains and Los Padres National Forest-
Mountains Of San Benito County And Interior Monterey County
Including Pinnacles National Park-
Northern Salinas Valley/Hollister Valley and Carmel Valley-
Northern Monterey Bay-Southern Monterey Bay and Big Sur Coast-
Including the cities of San Francisco, Tamalpais-Homestead, 
Sausalito, Oakland, Fremont, Hayward, Daly City, Berkeley, 
Pacifica, Concord, Antioch, Livermore, Walnut Creek, Pleasanton, 
Pittsburg, San Ramon, Blackhawk, Scotts Valley, Boulder Creek, 
Day Valley, San Jose, Greenfield, King City, Salinas, Santa Cruz,
Watsonville, Live Oak, Seaside, Monterey, and Marina
1049 AM PDT Thu Oct 15 2020

...HEAT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT FRIDAY...

* WHAT...High temperatures are forecast to range from 15 to 25 
  degrees above normal for most interior locations. Temperatures 
  in the upper 80s to low 100s are expected, with the hottest 
  inland areas pushing to 101-103. Near record to record- 
  breaking temperatures are forecasted. Additionally, overnight 
  temperatures will only cool into the upper 50s to lower 60s 
  near the coast and in the cooler valleys while 70s to lower 
  80s are likely in the hills, providing little relief from the 
  daytime heat.

* WHERE...Bay Area and Central Coast.

* WHEN...From 11 AM this morning to 9 PM PDT Friday.

* 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/mtr

The office that day

Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 13, 9:13 PM PDTGale WarningMTR35 hr
Oct 14, 12:34 PM PDTHeat AdvisoryMTRAlameda, Contra Costa, Marin, Monterey, Napa, San Benito and 5 more56 hr

Nearby

Wind Advisories in California, 2020Every wind advisory in 2020

Sources

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