Alert archive / California / Freeze Warnings in 2021

Freeze Warning 1, NWS San Francisco Bay Area, CA

January 25, 20217 counties in California

NWS San Francisco Bay Area, CA issued this freeze warning at Jan 25, 2021, 2:42 PM PST for 7 counties in California. It took effect at Jan 26, 2021, 2:00 AM PST. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jan 25, 2021, 2:42 PM PST (22:42 UTC)
In effect from
Jan 26, 2021, 2:00 AM PST
Expired
Jan 26, 2021, 8:00 AM PST
In force
6 hr
Issued by
NWS San Francisco Bay Area, CA

Counties Alameda County, CA, Contra Costa County, CA, Marin County, CA, Monterey County, CA, Napa County, CA, Santa Clara County, CA, Sonoma County, CA

The radar

The San Francisco radar (KMUX), 67 km from the middle of the area, began a volume at 22:46 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

Reno, NV (KREV), launched 12:00Z, 10.7 hours before the alert went out and 397 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, Reno, NV at 12:00Z on 2021-01-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Reno, NV at 12:00Z on 2021-01-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 1 square meters per square second.193958Sfc1 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
555 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
1 m²/s²
0-3 km storm-relative helicity
12 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

183 
WWUS76 KMTR 252242
NPWMTR

URGENT - WEATHER MESSAGE
National Weather Service San Francisco Bay Area
242 PM PST Mon Jan 25 2021

CAZ506-510-513-260645-
/O.UPG.KMTR.HW.A.0002.210127T0300Z-210127T1800Z/
/O.NEW.KMTR.WI.Y.0003.210127T0300Z-210127T1500Z/
/O.NEW.KMTR.FZ.W.0001.210126T1000Z-210126T1600Z/
North Bay Interior Valleys-East Bay Interior Valleys-
Santa Clara Valley Including San Jose-
Including the cities of Santa Rosa, South Santa Rosa, Napa, 
San Rafael, Petaluma, Novato, Rohnert Park, Concord, Antioch, 
Livermore, Walnut Creek, Pleasanton, Pittsburg, San Ramon, 
and San Jose
242 PM PST Mon Jan 25 2021

...FREEZE WARNING IN EFFECT FROM 2 AM TO 8 AM PST TUESDAY...
...WIND ADVISORY IN EFFECT FROM 7 PM TUESDAY TO 7 AM PST
WEDNESDAY...

* WHAT...For the Freeze Warning, sub-freezing temperatures as low
  as 28 expected, especially in the colder interior valleys. Urban
  locations such as San Jose and those closer to the bays will be
  in the low to mid 30s. For the Wind Advisory, south winds 20 to
  30 mph with gusts up to 55 mph expected.

* WHERE...North Bay Interior Valleys, East Bay Interior Valleys 
  and Santa Clara Valley Including San Jose.

* WHEN...For the Freeze Warning, from 2 AM to 8 AM PST Tuesday. 
  For the Wind Advisory, from 7 PM Tuesday to 7 AM PST Wednesday.

* IMPACTS...Gusty winds could blow around unsecured objects. Tree
  limbs could be blown down and a few power outages may result.
  Frost and freeze conditions will kill crops, other sensitive
  vegetation and possibly damage unprotected outdoor plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

CAZ516-260645-
/O.NEW.KMTR.FZ.W.0001.210126T1000Z-210126T1600Z/
/O.NEW.KMTR.WI.Y.0003.210127T0300Z-210127T2100Z/
Southern Salinas Valley/Arroyo Seco and Lake San Antonio-
Including the cities of Greenfield and King City
242 PM PST Mon Jan 25 2021

...FREEZE WARNING IN EFFECT FROM 2 AM TO 8 AM PST TUESDAY...
...WIND ADVISORY IN EFFECT FROM 7 PM TUESDAY TO 1 PM PST
WEDNESDAY...

* WHAT...For the Freeze Warning, sub-freezing temperatures as 
  low as 28 expected. For the Wind Advisory, south winds 20 to 
  30 mph with gusts up to 55 mph expected.

* WHERE...Southern Salinas Valley/Arroyo Seco and Lake San 
  Antonio.

* WHEN...For the Freeze Warning, from 2 AM to 8 AM PST Tuesday. 
  For the Wind Advisory, from 7 PM Tuesday to 1 PM PST Wednesday.

* IMPACTS...Gusty winds could blow around unsecured objects. Tree
  limbs could be blown down and a few power outages may result.
  Frost and freeze conditions will kill crops, other sensitive
  vegetation and possibly damage unprotected outdoor plumbing.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

CAZ006-505-509-512-260645-
/O.UPG.KMTR.HW.A.0002.210127T0300Z-210127T1800Z/
/O.NEW.KMTR.HW.W.0002.210127T0300Z-210127T1500Z/
San Francisco-
Coastal North Bay Including Point Reyes National Seashore-
San Francisco Peninsula Coast-Santa Cruz Mountains-
Including the cities of San Francisco, Tamalpais-Homestead, 
Sausalito, Pacifica, Scotts Valley, Boulder Creek, and Day Valley
242 PM PST Mon Jan 25 2021

...HIGH WIND WARNING IN EFFECT FROM 7 PM TUESDAY TO 7 AM PST
WEDNESDAY...

* WHAT...South winds 25 to 35 mph with gusts up to 60 mph
  expected, locally up to 70 mph in southwest facing slopes and
  coastal areas.

* WHERE...San Francisco, Coastal North Bay Including Point Reyes 
  National Seashore, San Francisco Peninsula Coast and Santa 
  Cruz Mountains.

* WHEN...From 7 PM Tuesday to 7 AM PST Wednesday.

* IMPACTS...Damaging winds will blow down trees and power lines. 
  Widespread power outages are expected. Travel will be 
  difficult, especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People should avoid being outside in forested areas and around
trees and branches. If possible, remain in the lower levels of
your home during the windstorm, and avoid windows. Use caution if
you must drive.

&&

$$

CAZ529-260645-
/O.UPG.KMTR.HW.A.0002.210127T0300Z-210128T1500Z/
/O.NEW.KMTR.HW.W.0002.210127T0300Z-210127T1500Z/
Northern Monterey Bay-
Including the cities of Santa Cruz, Watsonville, and Live Oak
242 PM PST Mon Jan 25 2021

...HIGH WIND WARNING IN EFFECT FROM 7 PM TUESDAY TO 7 AM PST
WEDNESDAY...

* WHAT...South winds 25 to 35 mph with gusts up to 60 mph 
  expected, locally up to 70 mph in southwest facing coastal 
  areas.

* WHERE...Northern Monterey Bay.

* WHEN...From 7 PM Tuesday to 7 AM PST Wednesday.

* IMPACTS...Damaging winds will blow down trees and power lines.
  Widespread power outages are expected. Travel will be difficult,
  especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People should avoid being outside in forested areas and around
trees and branches. If possible, remain in the lower levels of
your home during the windstorm, and avoid windows. Use caution if
you must drive.

&&

$$

CAZ517-530-260645-
/O.UPG.KMTR.HW.A.0002.210127T0300Z-210128T1500Z/
/O.NEW.KMTR.HW.W.0002.210127T0300Z-210127T2100Z/
Santa Lucia Mountains and Los Padres National Forest-
Southern Monterey Bay and Big Sur Coast-
Including the cities of Seaside, Monterey, and Marina
242 PM PST Mon Jan 25 2021

...HIGH WIND WARNING IN EFFECT FROM 7 PM TUESDAY TO 1 PM PST
WEDNESDAY...

* WHAT...South winds 25 to 35 mph with gusts up to 60 mph
  expected, locally up to 70 mph in southwest facing slopes and 
  coastal areas.

* WHERE...Santa Lucia Mountains and Los Padres National Forest 
  and Southern Monterey Bay and Big Sur Coast.

* WHEN...From 7 PM Tuesday to 1 PM PST Wednesday.

* IMPACTS...Damaging winds will blow down trees and power lines.
  Widespread power outages are expected. Travel will be difficult,
  especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People should avoid being outside in forested areas and around
trees and branches. If possible, remain in the lower levels of
your home during the windstorm, and avoid windows. Use caution if
you must drive.

&&

$$

CAZ507-508-511-260645-
/O.UPG.KMTR.HW.A.0002.210127T0300Z-210127T1800Z/
/O.NEW.KMTR.WI.Y.0003.210127T0300Z-210127T1500Z/
North Bay Mountains-San Francisco Bay Shoreline-
East Bay Hills and the Diablo Range-
Including the cities of Angwin, Lagunitas-Forest Knolls, 
Woodacre, Oakland, Fremont, Hayward, Daly City, Berkeley, 
and Blackhawk
242 PM PST Mon Jan 25 2021

...WIND ADVISORY IN EFFECT FROM 7 PM TUESDAY TO 7 AM PST
WEDNESDAY...

* WHAT...South winds 20 to 30 mph with gusts up to 55 mph
  expected, locally in excess of 60 mph in the ridges and peaks.

* WHERE...North Bay Mountains, San Francisco Bay Shoreline and 
  East Bay Hills and the Diablo Range.

* WHEN...From 7 PM Tuesday to 7 AM PST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

CAZ518-528-260645-
/O.UPG.KMTR.HW.A.0002.210127T0300Z-210128T1500Z/
/O.NEW.KMTR.WI.Y.0003.210127T0300Z-210127T2100Z/
Mountains Of San Benito County And Interior Monterey County
Including Pinnacles National Park-
Northern Salinas Valley/Hollister Valley and Carmel Valley-
Including the city of Salinas
242 PM PST Mon Jan 25 2021

...WIND ADVISORY IN EFFECT FROM 7 PM TUESDAY TO 1 PM PST
WEDNESDAY...

* WHAT...South winds 20 to 30 mph with gusts up to 55 mph
  expected, locally in excess of 60 mph in the ridges and peaks.

* WHERE...Mountains Of San Benito County and Interior Monterey 
  County Including Pinnacles National Park and Northern Salinas 
  Valley/Hollister Valley and Carmel Valley.

* WHEN...From 7 PM Tuesday to 1 PM PST Wednesday.

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

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
2 follow-up statements
516 
WWUS76 KMTR 260609
NPWMTR

URGENT - WEATHER MESSAGE
National Weather Service San Francisco Bay Area
1009 PM PST Mon Jan 25 2021

CAZ506-510-513-261600-
/O.CON.KMTR.FZ.W.0001.210126T1000Z-210126T1600Z/
/O.CON.KMTR.WI.Y.0003.210127T0300Z-210127T1500Z/
North Bay Interior Valleys-East Bay Interior Valleys-
Santa Clara Valley Including San Jose-
Including the cities of Santa Rosa, South Santa Rosa, Napa, 
San Rafael, Petaluma, Novato, Rohnert Park, Concord, Antioch, 
Livermore, Walnut Creek, Pleasanton, Pittsburg, San Ramon, 
and San Jose
1009 PM PST Mon Jan 25 2021

...FREEZE WARNING REMAINS IN EFFECT FROM 2 AM TO 8 AM PST
TUESDAY...
...WIND ADVISORY REMAINS IN EFFECT FROM 7 PM TUESDAY TO 7 AM PST
WEDNESDAY...

* WHAT...For the Freeze Warning, sub-freezing temperatures as 
  low as 28 expected, especially in the colder interior valleys. 
  Urban locations such as San Jose and those closer to the bays 
  will be in the low to mid 30s. For the Wind Advisory, south 
  winds 20 to 30 mph with gusts up to 55 mph expected.

* WHERE...North Bay Interior Valleys, East Bay Interior Valleys 
  and Santa Clara Valley Including San Jose.

* WHEN...For the Freeze Warning, from 2 AM to 8 AM PST Tuesday. 
  For the Wind Advisory, from 7 PM Tuesday to 7 AM PST Wednesday.

* IMPACTS...Gusty winds could blow around unsecured objects. 
  Tree limbs could be blown down and a few power outages may 
  result. Frost and freeze conditions will kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects. Charge up cell phones and
prepare for possible power outages.

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

CAZ516-261600-
/O.CON.KMTR.FZ.W.0001.210126T1000Z-210126T1600Z/
/O.CON.KMTR.WI.Y.0003.210127T0300Z-210127T2100Z/
Southern Salinas Valley/Arroyo Seco and Lake San Antonio-
Including the cities of Greenfield and King City
1009 PM PST Mon Jan 25 2021

...FREEZE WARNING REMAINS IN EFFECT FROM 2 AM TO 8 AM PST
TUESDAY...
...WIND ADVISORY REMAINS IN EFFECT FROM 7 PM TUESDAY TO 1 PM PST
WEDNESDAY...

* WHAT...For the Freeze Warning, sub-freezing temperatures as 
  low as 28 expected. For the Wind Advisory, south winds 20 to 
  30 mph with gusts up to 55 mph expected.

* WHERE...Southern Salinas Valley/Arroyo Seco and Lake San 
  Antonio.

* WHEN...For the Freeze Warning, from 2 AM to 8 AM PST Tuesday. 
  For the Wind Advisory, from 7 PM Tuesday to 1 PM PST Wednesday.

* IMPACTS...Gusty winds could blow around unsecured objects. 
  Tree limbs could be blown down and a few power outages may 
  result. Frost and freeze conditions will kill crops, other 
  sensitive vegetation and possibly damage unprotected outdoor 
  plumbing.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects. Charge up cell phones and
prepare for possible power outages.

Take steps now to protect tender plants from the cold. To prevent
freezing and possible bursting of outdoor water pipes they should
be wrapped, drained, or allowed to drip slowly. Those that have
in-ground sprinkler systems should drain them and cover above-
ground pipes to protect them from freezing.

&&

$$

CAZ006-505-509-512-529-261600-
/O.CON.KMTR.HW.W.0002.210127T0300Z-210127T1500Z/
San Francisco-
Coastal North Bay Including Point Reyes National Seashore-
San Francisco Peninsula Coast-Santa Cruz Mountains-
Northern Monterey Bay-
Including the cities of San Francisco, Tamalpais-Homestead, 
Sausalito, Pacifica, Scotts Valley, Boulder Creek, Day Valley, 
Santa Cruz, Watsonville, and Live Oak
1009 PM PST Mon Jan 25 2021

...HIGH WIND WARNING REMAINS IN EFFECT FROM 7 PM TUESDAY TO 7 AM
PST WEDNESDAY...

* WHAT...South winds 25 to 35 mph with gusts up to 60 mph 
  expected, locally up to 70 mph in southwest facing slopes and 
  coastal areas.

* WHERE...San Francisco, Coastal North Bay Including Point Reyes 
  National Seashore, San Francisco Peninsula Coast and Santa 
  Cruz Mountains.

* WHEN...From 7 PM Tuesday to 7 AM PST Wednesday.

* IMPACTS...Damaging winds will blow down trees and power lines. 
  Widespread power outages are expected. Travel will be 
  difficult, especially for high profile vehicles.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

People should avoid being outside in forested areas and around
trees and branches. If possible, remain in the lower levels of
your home during the windstorm, and avoid windows. Use caution if
you must drive. Charge up cell phones and prepare for possible 
power outages.

&&

$$

CAZ517-530-261600-
/O.CON.KMTR.HW.W.0002.210127T0300Z-210127T2100Z/
Santa Lucia Mountains and Los Padres National Forest-
Southern Monterey Bay and Big Sur Coast-
Including the cities of Seaside, Monterey, and Marina
1009 PM PST Mon Jan 25 2021

...HIGH WIND WARNING REMAINS IN EFFECT FROM 7 PM TUESDAY TO 1 PM
PST WEDNESDAY...

* WHAT...South winds 25 to 35 mph with gusts up to 60 mph 
  expected, locally up to 70 mph in southwest facing slopes and 
  coastal areas.

* WHERE...Santa Lucia Mountains and Los Padres National Forest 
  and Southern Monterey Bay and Big Sur Coast.

* WHEN...From 7 PM Tuesday to 1 PM PST Wednesday.

* IMPACTS...Damaging winds will blow down trees and power lines. 
  Widespread power outages are expected. Travel will be 
  difficult, especially for high profile vehicles.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

People should avoid being outside in forested areas and around
trees and branches. If possible, remain in the lower levels of
your home during the windstorm, and avoid windows. Use caution if
you must drive. Charge up cell phones and prepare for possible 
power outages.

&&

$$

CAZ507-508-511-261600-
/O.CON.KMTR.WI.Y.0003.210127T0300Z-210127T1500Z/
North Bay Mountains-San Francisco Bay Shoreline-
East Bay Hills and the Diablo Range-
Including the cities of Angwin, Lagunitas-Forest Knolls, 
Woodacre, Oakland, Fremont, Hayward, Daly City, Berkeley, 
and Blackhawk
1009 PM PST Mon Jan 25 2021

...WIND ADVISORY REMAINS IN EFFECT FROM 7 PM TUESDAY TO 7 AM PST
WEDNESDAY...

* WHAT...South winds 20 to 30 mph with gusts up to 55 mph 
  expected, locally in excess of 60 mph in the ridges and peaks.

* WHERE...North Bay Mountains, San Francisco Bay Shoreline and 
  East Bay Hills and the Diablo Range.

* WHEN...From 7 PM Tuesday to 7 AM PST Wednesday.

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


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects. Charge up cell phones and
prepare for possible power outages.

&&

$$

CAZ518-528-261600-
/O.CON.KMTR.WI.Y.0003.210127T0300Z-210127T2100Z/
Mountains Of San Benito County And Interior Monterey County
Including Pinnacles National Park-
Northern Salinas Valley/Hollister Valley and Carmel Valley-
Including the city of Salinas
1009 PM PST Mon Jan 25 2021

...WIND ADVISORY REMAINS IN EFFECT FROM 7 PM TUESDAY TO 1 PM PST
WEDNESDAY...

* WHAT...South winds 20 to 30 mph with gusts up to 55 mph 
  expected, locally in excess of 60 mph in the ridges and peaks.

* WHERE...Mountains Of San Benito County and Interior Monterey 
  County Including Pinnacles National Park and Northern Salinas 
  Valley/Hollister Valley and Carmel Valley.

* WHEN...From 7 PM Tuesday to 1 PM PST Wednesday.

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


PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects. Charge up cell phones and
prepare for possible power outages.

&&

$$

For more information from the National Weather Service visit
http://weather.gov/mtr
166 
WWUS76 KMTR 261544
NPWMTR

URGENT - WEATHER MESSAGE
National Weather Service San Francisco Bay Area
744 AM PST Tue Jan 26 2021

CAZ506-510-513-262345-
/O.EXP.KMTR.FZ.W.0001.000000T0000Z-210126T1600Z/
/O.CON.KMTR.WI.Y.0003.210127T0300Z-210127T1500Z/
North Bay Interior Valleys-East Bay Interior Valleys-
Santa Clara Valley Including San Jose-
Including the cities of Santa Rosa, South Santa Rosa, Napa, 
San Rafael, Petaluma, Novato, Rohnert Park, Concord, Antioch, 
Livermore, Walnut Creek, Pleasanton, Pittsburg, San Ramon, 
and San Jose
744 AM PST Tue Jan 26 2021

...WIND ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 7 AM
PST WEDNESDAY...
...FREEZE WARNING WILL EXPIRE AT 8 AM PST THIS MORNING...

* WHAT...Southeast winds 25 to 35 mph with gusts up to 65 mph 
  expected.

* WHERE...North Bay Interior Valleys, East Bay Interior Valleys 
  and Santa Clara Valley Including San Jose.

* WHEN...For the Wind Advisory, from 7 PM Tuesday to 7 AM PST 
  Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

CAZ516-262345-
/O.EXP.KMTR.FZ.W.0001.000000T0000Z-210126T1600Z/
/O.CON.KMTR.WI.Y.0003.210127T0300Z-210127T2100Z/
Southern Salinas Valley/Arroyo Seco and Lake San Antonio-
Including the cities of Greenfield and King City
744 AM PST Tue Jan 26 2021

...WIND ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 1 PM
PST WEDNESDAY...
...FREEZE WARNING WILL EXPIRE AT 8 AM PST THIS MORNING...

* WHAT...South winds 20 to 30 mph with gusts up to 60 mph 
  expected.

* WHERE...Southern Salinas Valley/Arroyo Seco and Lake San 
  Antonio.

* WHEN...For the Wind Advisory, from 7 PM Tuesday to 1 PM PST 
  Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

$$

CAZ006-505-509-512-529-262345-
/O.CON.KMTR.HW.W.0002.210127T0300Z-210127T1500Z/
San Francisco-
Coastal North Bay Including Point Reyes National Seashore-
San Francisco Peninsula Coast-Santa Cruz Mountains-
Northern Monterey Bay-
Including the cities of San Francisco, Tamalpais-Homestead, 
Sausalito, Pacifica, Scotts Valley, Boulder Creek, Day Valley, 
Santa Cruz, Watsonville, and Live Oak
744 AM PST Tue Jan 26 2021

...HIGH WIND WARNING REMAINS IN EFFECT FROM 7 PM THIS EVENING TO
7 AM PST WEDNESDAY...

* WHAT...South winds 25 to 35 mph with gusts up to 60 mph 
  expected, locally up to 70 mph in southwest facing slopes and 
  coastal areas.

* WHERE...San Francisco, Coastal North Bay Including Point Reyes 
  National Seashore, San Francisco Peninsula Coast and Santa 
  Cruz Mountains.

* WHEN...From 7 PM Tuesday to 7 AM PST Wednesday.

* IMPACTS...Damaging winds will blow down trees and power lines. 
  Widespread power outages are expected. Travel will be 
  difficult, especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People should avoid being outside in forested areas and around
trees and branches. If possible, remain in the lower levels of
your home during the windstorm, and avoid windows. Use caution if
you must drive. Charge up cell phones and prepare for possible
power outages.

&&

$$

CAZ517-530-262345-
/O.CON.KMTR.HW.W.0002.210127T0300Z-210127T2100Z/
Santa Lucia Mountains and Los Padres National Forest-
Southern Monterey Bay and Big Sur Coast-
Including the cities of Seaside, Monterey, and Marina
744 AM PST Tue Jan 26 2021

...HIGH WIND WARNING REMAINS IN EFFECT FROM 7 PM THIS EVENING TO
1 PM PST WEDNESDAY...

* WHAT...South winds 25 to 35 mph with gusts up to 60 mph 
  expected, locally up to 70 mph in southwest facing slopes and 
  coastal areas.

* WHERE...Santa Lucia Mountains and Los Padres National Forest 
  and Southern Monterey Bay and Big Sur Coast.

* WHEN...From 7 PM Tuesday to 1 PM PST Wednesday.

* IMPACTS...Damaging winds will blow down trees and power lines. 
  Widespread power outages are expected. Travel will be 
  difficult, especially for high profile vehicles.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

People should avoid being outside in forested areas and around
trees and branches. If possible, remain in the lower levels of
your home during the windstorm, and avoid windows. Use caution if
you must drive. Charge up cell phones and prepare for possible
power outages.

&&

$$

CAZ507-508-511-262345-
/O.CON.KMTR.WI.Y.0003.210127T0300Z-210127T1500Z/
North Bay Mountains-San Francisco Bay Shoreline-
East Bay Hills and the Diablo Range-
Including the cities of Angwin, Lagunitas-Forest Knolls, 
Woodacre, Oakland, Fremont, Hayward, Daly City, Berkeley, 
and Blackhawk
744 AM PST Tue Jan 26 2021

...WIND ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 7 AM
PST WEDNESDAY...

* WHAT...South winds 20 to 30 mph with gusts up to 55 mph 
  expected, locally in excess of 60 mph in the ridges and peaks.

* WHERE...North Bay Mountains, San Francisco Bay Shoreline and 
  East Bay Hills and the Diablo Range.

* WHEN...From 7 PM Tuesday to 7 AM PST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects. Charge up cell phones
and prepare for possible power outages.

&&

$$

CAZ518-528-262345-
/O.CON.KMTR.WI.Y.0003.210127T0300Z-210127T2100Z/
Mountains Of San Benito County And Interior Monterey County
Including Pinnacles National Park-
Northern Salinas Valley/Hollister Valley and Carmel Valley-
Including the city of Salinas
744 AM PST Tue Jan 26 2021

...WIND ADVISORY REMAINS IN EFFECT FROM 7 PM THIS EVENING TO 1 PM
PST WEDNESDAY...

* WHAT...South winds 20 to 30 mph with gusts up to 55 mph 
  expected, locally in excess of 60 mph in the ridges and peaks.

* WHERE...Mountains Of San Benito County and Interior Monterey 
  County Including Pinnacles National Park and Northern Salinas 
  Valley/Hollister Valley and Carmel Valley.

* WHEN...From 7 PM Tuesday to 1 PM PST Wednesday.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Use extra caution when driving, especially if operating a high
profile vehicle. Secure outdoor objects. Charge up cell phones
and prepare for possible power outages.

&&

$$

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
Jan 24, 5:19 PM PSTFlash Flood WatchMTRMarin, Monterey, Napa, San Mateo, Santa Clara, Santa Cruz and 1 more4 days
Jan 25, 2:55 AM PSTHigh Wind WatchMTRAlameda, Contra Costa, Marin, Monterey, Napa, San Benito and 5 more12 hr
Jan 25, 1:42 PM PSTStorm WatchMTR13 hr
Jan 25, 2:42 PM PSTHigh Wind WarningMTRMarin, Monterey, City and County of San Francisco, San Mateo, Santa Clara, Santa Cruz and 1 more45 hr
Jan 25, 2:42 PM PSTWind AdvisoryMTRAlameda, Contra Costa, Marin, Monterey, Napa, San Benito and 3 more61 hr

Nearby

Freeze Warnings in California, 2021Every freeze warning in 2021

Sources

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