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Updated:December 24, 2025 2:01 am PST

High Wind Warning HIGH WIND WARNING  
Los Angeles County

  Effective: Tue, 12/23 1:09pm Severity:  Severe 
  Updated: December 24, 2025 2:01 am Urgency: Expected
  Expires: Wed, 12/24 4:00am Certainty: Likely

Areas Affected: Marin Coastal Range - Sonoma Coastal Range - Coastal North Bay Including Point Reyes National Seashore - San Francisco Peninsula Coast - Santa Lucia Mountains and Los Padres National Forest - Southern Monterey Bay and Big Sur Coast
 
Alert Details:
* WHAT...Southeast winds 30 to 40 mph with gusts up to 65 mph
expected. Isolated areas along the coast may see a few gusts up to
75 mph.

* WHERE...Southern Monterey Bay and the Big Sur Coast, The Marin
Hills, Western Sonoma County Hills, Interior Monterey County and
the Santa Lucia Range, Coastal North Bay Including Point Reyes
National Seashore, and San Francisco Peninsula Coast.

* WHEN...Until 4 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. Damaging winds could down
trees, snap power lines, and result in property damage. Widespread
power outages are possible. Travel could be extremely difficult and
hazardous, especially for high profile vehicles.

Information:
People are urged to secure loose objects that could be blown around
or damaged by the wind.

Secure loose outdoor objects that could be blown around or damaged by
the wind.
High Wind Warning HIGH WIND WARNING  
Marin County

  Effective: Tue, 12/23 1:09pm Severity:  Severe 
  Updated: December 24, 2025 2:01 am Urgency: Expected
  Expires: Wed, 12/24 4:00am Certainty: Likely

Areas Affected: Marin Coastal Range - Sonoma Coastal Range - Coastal North Bay Including Point Reyes National Seashore - San Francisco Peninsula Coast - Santa Lucia Mountains and Los Padres National Forest - Southern Monterey Bay and Big Sur Coast
 
Alert Details:
* WHAT...Southeast winds 30 to 40 mph with gusts up to 65 mph
expected. Isolated areas along the coast may see a few gusts up to
75 mph.

* WHERE...Southern Monterey Bay and the Big Sur Coast, The Marin
Hills, Western Sonoma County Hills, Interior Monterey County and
the Santa Lucia Range, Coastal North Bay Including Point Reyes
National Seashore, and San Francisco Peninsula Coast.

* WHEN...Until 4 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. Damaging winds could down
trees, snap power lines, and result in property damage. Widespread
power outages are possible. Travel could be extremely difficult and
hazardous, especially for high profile vehicles.

Information:
People are urged to secure loose objects that could be blown around
or damaged by the wind.

Secure loose outdoor objects that could be blown around or damaged by
the wind.
Wind Advisory WIND ADVISORY  
Los Angeles County

  Effective: Tue, 12/23 1:09pm Severity:  Moderate 
  Updated: December 24, 2025 2:01 am Urgency: Expected
  Expires: Wed, 12/24 4:00am Certainty: Likely

Areas Affected: North Bay Interior Mountains - North Bay Interior Valleys - San Francisco Bay Shoreline - East Bay Interior Valleys - Santa Cruz Mountains - Santa Clara Valley Including San Jose - Eastern Santa Clara Hills - East Bay Hills - Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park
 
Alert Details:
* WHAT...Southeast winds 20 to 30 mph with gusts up to 55 mph
expected.

* WHERE...The East Bay and San Francisco Bay Shoreline, The Santa
Clara Valley and Eastern Hills, The Santa Cruz Mountains, Most of
San Benito County and the Cholame Hills in Southeast Monterey
County, North Bay Interior Mountains, and North Bay Interior
Valleys.

* WHEN...Until 4 AM PST Wednesday.

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

Information:
Winds this strong can make driving difficult, especially for high
profile vehicles. Use extra caution.
Wind Advisory WIND ADVISORY  
Marin County

  Effective: Tue, 12/23 1:09pm Severity:  Moderate 
  Updated: December 24, 2025 2:01 am Urgency: Expected
  Expires: Wed, 12/24 4:00am Certainty: Likely

Areas Affected: North Bay Interior Mountains - North Bay Interior Valleys - San Francisco Bay Shoreline - East Bay Interior Valleys - Santa Cruz Mountains - Santa Clara Valley Including San Jose - Eastern Santa Clara Hills - East Bay Hills - Mountains Of San Benito County And Interior Monterey County Including Pinnacles National Park
 
Alert Details:
* WHAT...Southeast winds 20 to 30 mph with gusts up to 55 mph
expected.

* WHERE...The East Bay and San Francisco Bay Shoreline, The Santa
Clara Valley and Eastern Hills, The Santa Cruz Mountains, Most of
San Benito County and the Cholame Hills in Southeast Monterey
County, North Bay Interior Mountains, and North Bay Interior
Valleys.

* WHEN...Until 4 AM PST Wednesday.

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

Information:
Winds this strong can make driving difficult, especially for high
profile vehicles. Use extra caution.
Flood Watch FLOOD WATCH  
Los Angeles County

  Effective: Tue, 12/23 11:39pm Severity:  Severe 
  Updated: December 24, 2025 2:01 am Urgency: Future
  Expires: Wed, 12/24 3:00pm Certainty: Possible

Areas Affected: Marin Coastal Range - Sonoma Coastal Range - North Bay Interior Mountains - Coastal North Bay Including Point Reyes National Seashore - North Bay Interior Valleys
 
Alert Details:
* WHAT...Flooding caused by excessive rainfall continues to be
possible from multiple lines of showers and thunderstorms, strong
at times, moving across the area.

* WHERE...The Northern San Francisco Bay Area (Napa, Sonoma, and
Marin counties).

* WHEN...Through Friday evening.

* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Creeks and streams may rise out of their banks. Low water crossings
may become flooded. Flooding may occur in poor drainage and urban
areas.

* ADDITIONAL DETAILS...
- Multiple rounds of moderate to heavy rainfall are expected across
the North Bay through Friday evening. An additional 3-5" is
possible over the North Bay Mountains and 2-3" over the North Bay
Valleys by Friday. Nuisance flooding will increase throughout the
week with sharp rises in smaller creeks and minor flooding along
some of the mainstream rivers (Russian River, Napa River). Debris
flows are possible particularly for the Pickett Burn Scar.
- http://www.weather.gov/safety/flood

Information:
You should monitor later forecasts and be alert for possible Flood
Warnings. Those living in areas prone to flooding should be prepared
to take action should flooding develop.
Flood Watch FLOOD WATCH  
Marin County

  Effective: Tue, 12/23 11:39pm Severity:  Severe 
  Updated: December 24, 2025 2:01 am Urgency: Future
  Expires: Wed, 12/24 3:00pm Certainty: Possible

Areas Affected: Marin Coastal Range - Sonoma Coastal Range - North Bay Interior Mountains - Coastal North Bay Including Point Reyes National Seashore - North Bay Interior Valleys
 
Alert Details:
* WHAT...Flooding caused by excessive rainfall continues to be
possible from multiple lines of showers and thunderstorms, strong
at times, moving across the area.

* WHERE...The Northern San Francisco Bay Area (Napa, Sonoma, and
Marin counties).

* WHEN...Through Friday evening.

* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Creeks and streams may rise out of their banks. Low water crossings
may become flooded. Flooding may occur in poor drainage and urban
areas.

* ADDITIONAL DETAILS...
- Multiple rounds of moderate to heavy rainfall are expected across
the North Bay through Friday evening. An additional 3-5" is
possible over the North Bay Mountains and 2-3" over the North Bay
Valleys by Friday. Nuisance flooding will increase throughout the
week with sharp rises in smaller creeks and minor flooding along
some of the mainstream rivers (Russian River, Napa River). Debris
flows are possible particularly for the Pickett Burn Scar.
- http://www.weather.gov/safety/flood

Information:
You should monitor later forecasts and be alert for possible Flood
Warnings. Those living in areas prone to flooding should be prepared
to take action should flooding develop.
Beach Hazards Statement BEACH HAZARDS STATEMENT  
Los Angeles County

  Effective: Tue, 12/23 8:03pm Severity:  Moderate 
  Updated: December 24, 2025 2:01 am Urgency: Expected
  Expires: Wed, 12/24 6:00am Certainty: Likely

Areas Affected: San Francisco - Coastal North Bay Including Point Reyes National Seashore - San Francisco Peninsula Coast - Northern Monterey Bay - Southern Monterey Bay and Big Sur Coast
 
Alert Details:
* WHAT...Hazardously strong coastal winds and jets will lead to
blowing and drifting sand, wind waves up to 20 ft, and result
in poor visibility along coastal beaches.

* WHERE...Beaches along the Pacific Coast.

* WHEN...Through 4 AM Friday.

* IMPACTS...Dangerous coastal and near coastal conditions. Water
rescues may be affected by poor visibility from sea spray and
blowing sand. Potential for increased erosion.

Information:
Dangerous conditions are forecast along the shoreline. It is
recommended to avoid the coast during this time. Never turn your
back to the ocean.
Beach Hazards Statement BEACH HAZARDS STATEMENT  
Marin County

  Effective: Tue, 12/23 8:03pm Severity:  Moderate 
  Updated: December 24, 2025 2:01 am Urgency: Expected
  Expires: Wed, 12/24 6:00am Certainty: Likely

Areas Affected: San Francisco - Coastal North Bay Including Point Reyes National Seashore - San Francisco Peninsula Coast - Northern Monterey Bay - Southern Monterey Bay and Big Sur Coast
 
Alert Details:
* WHAT...Hazardously strong coastal winds and jets will lead to
blowing and drifting sand, wind waves up to 20 ft, and result
in poor visibility along coastal beaches.

* WHERE...Beaches along the Pacific Coast.

* WHEN...Through 4 AM Friday.

* IMPACTS...Dangerous coastal and near coastal conditions. Water
rescues may be affected by poor visibility from sea spray and
blowing sand. Potential for increased erosion.

Information:
Dangerous conditions are forecast along the shoreline. It is
recommended to avoid the coast during this time. Never turn your
back to the ocean.