High Surf Advisory
* WHAT...Large breaking waves up to 25 feet, strong rip
currents and sneaker waves.
* WHERE...San Francisco, Coastal North Bay Including Point Reyes
National Seashore, San Francisco Peninsula Coast, Northern
Monterey Bay and Southern Monterey Bay and Big Sur Coast
Counties.
* WHEN...For the Beach Hazards Statement, through 4 AM Friday.
For the High Surf Advisory, from 4 AM to 10 PM PST Friday.
* IMPACTS...Dangerous swimming and surfing conditions and
localized beach erosion.
From: Dec 26, 2025 11:41
Until: Dec 26, 2025 23:00
Flood Watch
* 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...San Francisco County, San Mateo Peninsula, East Bay, South
Bay, and Central Coast
* 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...
- Numerous lines of showers and thunderstorms will move across the
Bay Area and Central Coast through Friday evening. An additional
1-2" of rain is expected across the interior with locally higher
totals between 2-3" across the Santa Cruz Mountains and up to 3"
across the Santa Lucia Range. Flooding potential will increase
with each successive round of rain. Sharp rises in smaller creeks
and streams are expected with at least some potential for minor
flooding in mainstream rivers.
- http://www.weather.gov/safety/flood
From: Dec 25, 2025 06:34
Until: Dec 26, 2025 15:15
Flood Advisory
* WHAT...Flooding caused by excessive rainfall continues.
* WHERE...Northwestern Santa Clara County and northwestern Santa Cruz
County in northern California...
* Until 445 AM PST.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
* ADDITIONAL DETAILS...
- At 203 AM PST, Doppler radar indicated heavy rain. Minor flooding
is ongoing or expected to begin shortly in the advisory area. Up
to 0.5 inches of rain have fallen.
- Some locations that will experience flooding include...
San Jose, Sunnyvale, Santa Clara, Milpitas, Cupertino, Campbell,
Saratoga, Los Gatos, Rancho Rinconada Cdp, Fruitdale, Buena
Vista, Sunol-Midtown, Boulder Creek, Alum Rock, Ben Lomond, East
Foothills, Monte Sereno, Cambrian Park, Rancho Rinconada and
Lexington Hills.
- http://www.weather.gov/safety/flood
From: Dec 26, 2025 10:03
Until: Dec 26, 2025 12:45
High Surf Advisory
* WHAT...For the Beach Hazards Statement, strong winds will lead
to blowing and drifting sand, wind waves up to 20 ft, and result
in poor visibility along coastal beaches. For the High Surf
Advisory, large breaking waves up to 25 feet, strong rip
currents and sneaker waves.
* WHERE...San Francisco, Coastal North Bay Including Point Reyes
National Seashore, San Francisco Peninsula Coast, Northern
Monterey Bay and Southern Monterey Bay and Big Sur Coast
Counties.
* WHEN...For the Beach Hazards Statement, through 4 AM Friday.
For the High Surf Advisory, from 4 AM to 10 PM PST Friday.
* IMPACTS...Dangerous swimming and surfing conditions and
localized beach erosion can be expected. Sneaker waves can sweep
across the shoreline without warning, pulling people into the
sea from rocks, jetties and beaches. Large breaking waves can
overpower swimmers resulting in significant physical injury and
increase the risk of drowning.
From: Dec 25, 2025 22:47
Until: Dec 26, 2025 12:00
Beach Hazards Statement
* WHAT...For the Beach Hazards Statement, strong winds will lead
to blowing and drifting sand, wind waves up to 20 ft, and result
in poor visibility along coastal beaches. For the High Surf
Advisory, large breaking waves up to 25 feet, strong rip
currents and sneaker waves.
* WHERE...San Francisco, Coastal North Bay Including Point Reyes
National Seashore, San Francisco Peninsula Coast, Northern
Monterey Bay and Southern Monterey Bay and Big Sur Coast
Counties.
* WHEN...For the Beach Hazards Statement, through 4 AM Friday.
For the High Surf Advisory, from 4 AM to 10 PM PST Friday.
* IMPACTS...Dangerous swimming and surfing conditions and
localized beach erosion can be expected. Sneaker waves can sweep
across the shoreline without warning, pulling people into the
sea from rocks, jetties and beaches. Large breaking waves can
overpower swimmers resulting in significant physical injury and
increase the risk of drowning.
From: Dec 25, 2025 22:47
Until: Dec 26, 2025 12:00
Beach Hazards Statement
* 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 late Thursday night.
* 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.
From: Dec 25, 2025 12:56
Until: Dec 25, 2025 23:00
High Wind Warning
* WHAT...South winds 25 to 35 mph with gusts up to 65 mph expected.
* WHERE...Monterey Bay and the Big Sur Coast, Western Sonoma County
Hills, Interior Monterey County and the Santa Lucia Range, San
Francisco, Coastal North Bay Including Point Reyes National
Seashore, San Francisco Peninsula Coast, and Northern Salinas
Valley/Hollister Valley and Carmel Valley.
* WHEN...Until 10 AM PST this morning.
* IMPACTS...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. Strong winds may move loose debris, result
in minor damage property, and cause sporadic power outages. Travel
could become difficult, especially for high profile vehicles. The
combination of wind and moist soils will increase the risk for
downed trees.
From: Dec 25, 2025 08:36
Until: Dec 25, 2025 18:00
Wind Advisory
* WHAT...South 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 Marin Hills, The Santa Cruz
Mountains, Most of San Benito County and the Cholame Hills in
Southeast Monterey County, North Bay Interior Mountains, North Bay
Interior Valleys, and Southern Salinas Valley/Arroyo Seco and Lake
San Antonio.
* WHEN...Until 10 AM PST this morning.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
Strong winds may move loose debris, result in minor damage
property, and cause sporadic power outages. Travel could become
difficult, especially for high profile vehicles. The combination of
wind and moist soils will increase the risk for downed trees.
From: Dec 25, 2025 08:36
Until: Dec 25, 2025 18:00
Flood Advisory
* WHAT...Flooding caused by excessive rainfall is expected.
* WHERE...South Central Santa Cruz County in northern California...
* Until 615 AM PST.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
* ADDITIONAL DETAILS...
- At 317 AM PST, Doppler radar indicated heavy rain due to
thunderstorms. Minor flooding is ongoing or expected to begin
shortly in the advisory area. Up to 0.7 inches of rain have
fallen.
- Some locations that will experience flooding include...
Santa Cruz, Capitola, Live Oak, Twin Lakes, Opal Cliffs, Soquel,
Aptos, Rio Del Mar and Day Valley.
- http://www.weather.gov/safety/flood
From: Dec 25, 2025 11:17
Until: Dec 25, 2025 14:15
Flash Flood Warning
FFWMTR
The National Weather Service in San Francisco has issued a
* Flash Flood Warning for...
East Central San Mateo County in northern California...
Northwestern Santa Clara County in northern California...
* Until 615 AM PST.
* At 311 AM PST, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 0.2 and 1 inch of rain
has fallen. Flash flooding is ongoing or expected to begin shortly.
HAZARD...Life threatening flash flooding. Thunderstorms producing
flash flooding.
SOURCE...Radar indicated.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
* Some locations that will experience flash flooding include...
San Jose, Fremont, Sunnyvale, Santa Clara, Mountain View, Milpitas,
Palo Alto, Cupertino, Campbell, Menlo Park, Saratoga, Los Gatos,
Los Altos, East Palo Alto, Los Altos Hills, Woodside, Fruitdale,
Buena Vista, Sunol-Midtown and Rancho Rinconada Cdp.
From: Dec 25, 2025 11:11
Until: Dec 25, 2025 14:15
Flash Flood Warning
FFWMTR
The National Weather Service in San Francisco has issued a
* Flash Flood Warning for...
Northwestern Alameda County in northern California...
Western Contra Costa County in northern California...
* Until 600 AM PST.
* At 301 AM PST, Doppler radar indicated heavy rain across the warned
area. Between 0.5 and 1 inch of rain has fallen. Flash flooding is
ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by heavy rain.
SOURCE...Radar indicated.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Oakland, Concord, Berkeley, Richmond, Mountain View, Alameda, San
Ramon, Walnut Creek, Danville, Martinez, Pleasant Hill, San Pablo,
Lafayette, El Cerrito, Hercules, Albany, Pinole, Orinda, Moraga and
Piedmont.
From: Dec 25, 2025 11:01
Until: Dec 25, 2025 14:00
Flash Flood Warning
FFWMTR
The National Weather Service in San Francisco has issued a
* Flash Flood Warning for...
San Francisco County in northern California...
Northwestern San Mateo County in northern California...
* Until 600 AM PST.
* At 256 AM PST, The public reported heavy rain and flooding across
the warned area. Between 0.5 and 1 inch of rain has fallen. Flash
flooding is already occurring.
HAZARD...Life threatening flash flooding. Heavy rain producing
flash flooding.
SOURCE...Public reported.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
* Some locations that will experience flash flooding include...
San Francisco, Daly City, South San Francisco, San Bruno, Pacifica,
Millbrae, Brisbane, Colma and Broadmoor.
From: Dec 25, 2025 10:56
Until: Dec 25, 2025 14:00
Flood Advisory
* WHAT...Flooding caused by excessive rainfall is expected.
* WHERE...Western Alameda County in northern California...
Central Contra Costa County in northern California...
North Central Santa Clara County in northern California...
* Until 545 AM PST.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
Water over roadways. Overflowing poor drainage areas.
* ADDITIONAL DETAILS...
- At 248 AM PST, Doppler radar indicated heavy rain due to
thunderstorms. Minor flooding is ongoing or expected to begin
shortly in the advisory area. Up to 0.5 inches of rain have
fallen.
- Some locations that will experience flooding include...
San Jose, Oakland, Fremont, Hayward, Sunnyvale, Concord, Santa
Clara, Berkeley, Richmond, San Leandro, Livermore, Mountain View,
Alameda, San Ramon, Pleasanton, Union City, Milpitas, Walnut
Creek, Pittsburg and Dublin.
- http://www.weather.gov/safety/flood
From: Dec 25, 2025 10:48
Until: Dec 25, 2025 13:45
Flood Advisory
* WHAT...Flooding caused by excessive rainfall continues.
* WHERE...San Francisco County in northern California...
San Mateo County in northern California...
* Until 530 AM PST.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
Water over roadways.
* ADDITIONAL DETAILS...
- At 348 AM PST, Doppler radar indicated heavy rain due to
thunderstorms. Minor flooding is ongoing or expected to begin
shortly in the advisory area. Between 0.5 and 4 inches of rain
have fallen.
- Some locations that will experience flooding include...
San Francisco, Daly City, San Mateo, Redwood City, South San
Francisco, San Bruno, Pacifica, Menlo Park, Foster City,
Burlingame, San Carlos, Belmont, Millbrae, Half Moon Bay,
Hillsborough, Atherton, Woodside, Highlands-Baywood Park, El
Granada and Portola Valley.
- http://www.weather.gov/safety/flood
From: Dec 25, 2025 11:48
Until: Dec 25, 2025 13:30
Flood Advisory
* WHAT...Flooding caused by excessive rainfall continues.
* WHERE...East Central San Mateo County in northern California...
Northwestern Santa Clara County in northern California...
Central Santa Cruz County in northern California...
* Until 515 AM PST.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
Overflowing poor drainage areas. Ponding of water in urban or other
areas is occurring or is imminent.
* ADDITIONAL DETAILS...
- At 245 AM PST, Doppler radar indicated heavy rain. Minor flooding
is ongoing or expected to begin shortly in the advisory area.
Between 0.2 and 1 inch of rain has fallen.
- Some locations that will experience flooding include...
San Jose, Sunnyvale, Santa Clara, Redwood City, Mountain View,
Palo Alto, Santa Cruz, Cupertino, Campbell, Menlo Park, Saratoga,
Los Gatos, Los Altos, San Carlos, East Palo Alto, Belmont, Scotts
Valley, Los Altos Hills, Atherton and Woodside.
- http://www.weather.gov/safety/flood
From: Dec 25, 2025 10:45
Until: Dec 25, 2025 13:15
Flash Flood Warning
FFWMTR
The National Weather Service in San Francisco has issued a
* Flash Flood Warning for...
Northern San Mateo County in northern California...
* Until 515 AM PST.
* At 201 AM PST, Doppler radar indicated heavy rain across the warned
area. Up to 0.7 inches of rain have fallen. Flash flooding is
ongoing or expected to begin shortly.
HAZARD...Life threatening flash flooding. Heavy rain producing
flash flooding.
SOURCE...Radar indicated.
IMPACT...Life threatening flash flooding of creeks and streams,
urban areas, highways, streets and underpasses.
* Some locations that will experience flash flooding include...
San Mateo, Redwood City, Palo Alto, Menlo Park, Foster City,
Burlingame, San Carlos, East Palo Alto, Belmont, Millbrae,
Hillsborough, Atherton, Woodside, Highlands-Baywood Park, North
Fair Oaks, Stanford, Portola Valley, Emerald Lake Hills, Highlands
and West Menlo Park.
From: Dec 25, 2025 10:01
Until: Dec 25, 2025 13:15
Beach Hazards Statement
* 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 late Thursday night.
* 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.
From: Dec 25, 2025 03:48
Until: Dec 25, 2025 13:00
Wind Advisory
* WHAT...South 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 Marin Hills, The Santa Cruz
Mountains, Most of San Benito County and the Cholame Hills in
Southeast Monterey County, North Bay Interior Mountains, North Bay
Interior Valleys, and Southern Salinas Valley/Arroyo Seco and Lake
San Antonio.
* WHEN...From 8 PM this evening to 10 AM PST Thursday.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
Strong winds may move loose debris, result in minor damage
property, and cause sporadic power outages. Travel could become
difficult, especially for high profile vehicles. The combination of
wind and moist soils will increase the risk for downed trees.
From: Dec 24, 2025 15:31
Until: Dec 25, 2025 01:45
High Wind Warning
* WHAT...South winds 25 to 35 mph with gusts up to 65 mph expected.
* WHERE...Monterey Bay and the Big Sur Coast, Interior Monterey
County and the Santa Lucia Range, San Francisco, Coastal North Bay
Including Point Reyes National Seashore, San Francisco Peninsula
Coast, and Northern Salinas Valley/Hollister Valley and Carmel
Valley.
* WHEN...From 8 PM this evening to 10 AM PST Thursday.
* IMPACTS...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. Strong winds may move loose debris, result
in minor damage property, and cause sporadic power outages. Travel
could become difficult, especially for high profile vehicles. The
combination of wind and moist soils will increase the risk for
downed trees.
From: Dec 24, 2025 15:31
Until: Dec 25, 2025 01:45
Flood Watch
* 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...San Francisco County, San Mateo Peninsula, East Bay, South
Bay, and Central Coast
* 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...
- Numerous lines of showers and thunderstorms will move across the
Bay Area and Central Coast through Friday evening. An additional
1-3" of rain is expected across the interior with locally higher
totals between 3-5" across the Santa Cruz Mountains and up to 8"
across the Santa Lucia Range. Flooding potential will increase
with each successive round of rain. Sharp rises in smaller creeks
and streams are expected with at least some potential for minor
flooding in mainstream rivers.
- http://www.weather.gov/safety/flood
From: Dec 24, 2025 07:39
Until: Dec 24, 2025 23:00
Beach Hazards Statement
* 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.
From: Dec 24, 2025 04:03
Until: Dec 24, 2025 22:00
Wind Advisory
* 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 8 AM PST this morning.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
From: Dec 24, 2025 11:23
Until: Dec 24, 2025 16:00
High Wind Warning
* 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...The Salinas and Carmel Valleys and Hollister Area, Monterey
Bay and the Big Sur Coast, The Marin Hills, Western Sonoma County
Hills, Interior Monterey County and the Santa Lucia Range, San
Francisco, Coastal North Bay Including Point Reyes National
Seashore, and San Francisco Peninsula Coast.
* WHEN...Until 8 AM PST this morning.
* 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.
From: Dec 24, 2025 11:23
Until: Dec 24, 2025 16:00
Flood Advisory
* WHAT...Urban area and small stream flooding caused by excessive
rainfall continues.
* WHERE...San Mateo County in northern California...
West Central Santa Cruz County in northern California...
* Until 745 AM PST.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
* ADDITIONAL DETAILS...
- At 337 AM PST, Doppler radar and automated rain gauges indicated
heavy rain due to thunderstorms. This will cause urban and small
stream flooding.
- Belmont Creek at the Harbor Boulevard - Old County Road
intersection is currently reporting flooding.
- Some locations that will experience flooding include...
Daly City, San Mateo, Redwood City, Palo Alto, South San
Francisco, San Bruno, Pacifica, Menlo Park, Foster City,
Burlingame, San Carlos, Belmont, Millbrae, Half Moon Bay,
Hillsborough, Atherton, Woodside, Highlands-Baywood Park, North
Fair Oaks and El Granada.
- http://www.weather.gov/safety/flood
From: Dec 24, 2025 11:38
Until: Dec 24, 2025 15:45
Flood Advisory
* WHAT...Urban area and small stream flooding caused by excessive
rainfall continues.
* WHERE...Alameda County in northern California...
Contra Costa County in northern California...
* Until 615 AM PST.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
Water over roadways.
* ADDITIONAL DETAILS...
- At 353 AM PST, Local law enforcement reported heavy rain in the
advisory area and flooding of 2 to 3 feet on northbound
Interstate 880 at Hesperian Boulevard. This will cause urban and
small stream flooding. Between 0.2 and 1 inch of rain has fallen.
- Additional rainfall amounts up to 1 inch are expected over the
area. This additional rain will result in minor flooding.
- Some locations that will experience flooding include...
Oakland, Fremont, Hayward, Concord, Berkeley, Richmond, Antioch,
San Leandro, Livermore, Mountain View, Alameda, San Ramon,
Pleasanton, Union City, Walnut Creek, Pittsburg, Dublin, Newark,
Danville and Martinez.
- http://www.weather.gov/safety/flood
From: Dec 24, 2025 11:53
Until: Dec 24, 2025 14:15
High Wind Warning
* 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.
From: Dec 23, 2025 21:09
Until: Dec 24, 2025 12:00
Wind Advisory
* 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.
From: Dec 23, 2025 21:09
Until: Dec 24, 2025 12:00
High Wind Warning
* WHAT...Southeast winds 20 to 30 mph with gusts up to 60 mph
expected.
* WHERE...The Salinas and Carmel Valleys and Hollister Area, Northern
Monterey Bay, and San Francisco.
* 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.
From: Dec 23, 2025 21:09
Until: Dec 24, 2025 12:00
High Wind Watch
* WHAT...South winds 20 to 30 mph with gusts up to 60 mph possible.
* WHERE...The Bay Area, The Central Coast, The Santa Clara Valley and
Eastern Hills, The Salinas and Carmel Valleys and Hollister Area,
The Santa Cruz Mountains, and San Francisco Peninsula Coast.
* WHEN...From Tuesday evening through early Wednesday morning.
* IMPACTS...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. The combination of wind and moist soils will
increase the risk for downed trees.
From: Dec 22, 2025 12:35
Until: Dec 23, 2025 18:00
Flood Watch
* WHAT...Flooding caused by excessive rainfall continues to be
possible.
* WHERE...San Francisco County, San Mateo Peninsula, East Bay, South
Bay, and Central Coast
* WHEN...From Tuesday morning 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...
- A series of atmospheric rivers will result in multiple rounds of
moderate to heavy rainfall this week across the Bay Area and
Central Coast. An additional 2-4" of rain is expected across the
interior with locally higher totals between 4-6" across the Santa
Cruz Mountains and up to 8" across the Santa Lucia Range.
Flooding potential will increase with each successive round of
rain. Sharp rises in smaller creeks and streams are expected with
at least some potential for minor flooding in mainstream rivers.
- http://www.weather.gov/safety/flood
From: Dec 22, 2025 19:58
Until: Dec 23, 2025 14:00
Flood Watch
* WHAT...Flooding caused by excessive rainfall continues to be
possible.
* WHERE...San Francisco County, San Mateo Peninsula, East Bay, South
Bay, and Central Coast
* WHEN...From Tuesday morning 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. Flooding may occur
in poor drainage and urban areas.
* ADDITIONAL DETAILS...
- A series of atmospheric rivers will result in multiple rounds of
moderate to heavy rainfall this week across the Bay Area and
Central Coast. An additional 2-4" of rain is expected across the
interior with locally higher totals between 4-6" across the Santa
Cruz Mountains and up to 8" across the Santa Lucia Range.
Flooding potential will increase with each successive round of
rain. Sharp rises in smaller creeks and streams are expected with
at least some potential for minor flooding in mainstream rivers.
- http://www.weather.gov/safety/flood
From: Dec 22, 2025 11:34
Until: Dec 22, 2025 19:45
Flood Advisory
* WHAT...Urban area and small stream flooding caused by excessive
rainfall continues.
* WHERE...Northwestern Alameda County in northern California...
Western Contra Costa County in northern California...
* Until 1130 AM PST.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
Water over roadways. Overflowing poor drainage areas.
* ADDITIONAL DETAILS...
- At 932 AM PST, Doppler radar indicated moderate to heavy rain at
times. This will cause urban and small stream flooding.
Overflowing poor drainage areas will cause minor flooding in the
advisory area.
- Some locations that will experience flooding include...
Oakland, Hayward, Concord, Berkeley, Richmond, San Leandro,
Mountain View, Alameda, San Ramon, Pleasanton, Union City, Walnut
Creek, Dublin, Danville, Martinez, Pleasant Hill, San Pablo,
Lafayette, El Cerrito and Castro Valley.
- http://www.weather.gov/safety/flood
From: Dec 22, 2025 17:32
Until: Dec 22, 2025 19:30
Flood Advisory
* WHAT...Urban area and small stream flooding caused by excessive
rainfall continues.
* WHERE...Southern San Francisco County in northern California...
Northwestern San Mateo County in northern California...
* Until 1115 AM PST.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
* ADDITIONAL DETAILS...
- At 959 AM PST, Doppler radar indicated moderate to heavy
rainfall. Overflowing poor drainage areas will cause minor
flooding in the advisory area.
- Some locations that will experience flooding include...
San Francisco, Daly City, South San Francisco, San Bruno,
Pacifica, Burlingame, Millbrae, Brisbane, Colma and Broadmoor.
- http://www.weather.gov/safety/flood
From: Dec 22, 2025 17:59
Until: Dec 22, 2025 19:15
Beach Hazards Statement
* WHAT...Long period westerly swell will result in an increased
risk for sneaker waves and strong rip currents. Breaking waves
10 to 14 feet, with long lulls of 10 to 20 minutes or more
between largest sets.
* WHERE...Pacific Coast beaches.
* WHEN...Through Wednesday evening.
* IMPACTS...Sneaker waves can unexpectedly run significantly
farther up the beach than normal, including over rocks and
jetties. Rip currents are typically more frequent and stronger
in the vicinity of jetties, inlets, and piers.
From: Dec 01, 2025 06:05
Until: Dec 02, 2025 03:00
Coastal Flood Advisory
* WHAT...Up to 1.4 ft of inundation above ground level is
possible in low lying areas near shorelines and tidal waterways.
* WHERE...North Bay Interior Valleys and San Francisco Bay
Shoreline Counties.
* WHEN...From 6 AM Tuesday to 3 PM PST Sunday.
* IMPACTS...Flooding of lots, parks, and roads with only
isolated road closures expected.
* ADDITIONAL DETAILS...At the San Francisco tidal gauge high tide
is expected to be 0.8 ft above normal (6.66 ft MLLW) at 8:24 AM
Tuesday, 1.2 ft above normal (7.00 ft MLLW) at 9:04 AM
Wednesday, 1.4 ft above normal (7.20 ft MLLW) at 9:48 AM
Thursday, 1.4 ft above normal (7.23 ft MLLW) at 10:35 AM Friday,
1.2 ft above normal (7.08 ft MLLW) at 11:25 AM Saturday, and 0.9
ft above normal (6.75 ft MLLW) at 12:17 PM Sunday. High tide
timing varies up to 90 minutes earlier or later along the
Pacific Coast and throughout the San Francisco Bay respectively.
From: Dec 01, 2025 06:05
Until: Dec 02, 2025 03:00
Coastal Flood Advisory
* WHAT...For the Beach Hazards Statement, long period westerly
swell will result in an increased risk for sneaker waves and
strong rip currents. Breaking waves 10 to 14 feet, with long
lulls of 10 to 20 minutes or more between largest sets. For the
Coastal Flood Advisory, up to 1.4 ft of inundation above ground
level is possible in low lying areas near shorelines and tidal
waterways.
* WHERE...Bayshore locations along San Francisco and Monterey
Bay.
* WHEN...For the Beach Hazards Statement, through Wednesday
evening. For the Coastal Flood Advisory, from 6 AM Tuesday to
3 PM PST Sunday.
* IMPACTS...For the Beach Hazards Statement, sneaker waves can
unexpectedly run significantly farther up the beach than normal,
including over rocks and jetties. Rip currents are typically
more frequent and stronger in the vicinity of jetties, inlets,
and piers. For the Coastal Flood Advisory, flooding of lots,
parks, and roads with only isolated road closures expected.
* ADDITIONAL DETAILS...For the Coastal Flood Advisory, at the San
Francisco tidal gauge high tide is expected to be 0.8 ft above
normal (6.66 ft MLLW) at 8:24 AM Tuesday, 1.2 ft above normal
(7.00 ft MLLW) at 9:04 AM Wednesday, 1.4 ft above normal (7.20
ft MLLW) at 9:48 AM Thursday, 1.4 ft above normal (7.23 ft MLLW)
at 10:35 AM Friday, 1.2 ft above normal (7.08 ft MLLW) at 11:25
AM Saturday, and 0.9 ft above normal (6.75 ft MLLW) at 12:17 PM
Sunday. High tide timing varies up to 90 minutes earlier or
later along the Pacific Coast and throughout the San Francisco
Bay respectively.
From: Dec 01, 2025 06:05
Until: Dec 02, 2025 03:00
Beach Hazards Statement
* WHAT...For the Beach Hazards Statement, long period westerly
swell will result in an increased risk for sneaker waves and
strong rip currents. Breaking waves 10 to 14 feet, with long
lulls of 10 to 20 minutes or more between largest sets. For the
Coastal Flood Advisory, up to 1.4 ft of inundation above ground
level is possible in low lying areas near shorelines and tidal
waterways.
* WHERE...Bayshore locations along San Francisco and Monterey
Bay.
* WHEN...For the Beach Hazards Statement, through Wednesday
evening. For the Coastal Flood Advisory, from 6 AM Tuesday to
3 PM PST Sunday.
* IMPACTS...For the Beach Hazards Statement, sneaker waves can
unexpectedly run significantly farther up the beach than normal,
including over rocks and jetties. Rip currents are typically
more frequent and stronger in the vicinity of jetties, inlets,
and piers. For the Coastal Flood Advisory, flooding of lots,
parks, and roads with only isolated road closures expected.
* ADDITIONAL DETAILS...For the Coastal Flood Advisory, at the San
Francisco tidal gauge high tide is expected to be 0.8 ft above
normal (6.66 ft MLLW) at 8:24 AM Tuesday, 1.2 ft above normal
(7.00 ft MLLW) at 9:04 AM Wednesday, 1.4 ft above normal (7.20
ft MLLW) at 9:48 AM Thursday, 1.4 ft above normal (7.23 ft MLLW)
at 10:35 AM Friday, 1.2 ft above normal (7.08 ft MLLW) at 11:25
AM Saturday, and 0.9 ft above normal (6.75 ft MLLW) at 12:17 PM
Sunday. High tide timing varies up to 90 minutes earlier or
later along the Pacific Coast and throughout the San Francisco
Bay respectively.
From: Dec 01, 2025 06:05
Until: Dec 02, 2025 03:00
Beach Hazards Statement
* WHAT...Long period westerly swell will result in an increased
risk for sneaker waves and rip currents. Breaking waves 10 to 14
feet, with long lulls of 10 to 20 minutes or more between
largest sets.
* WHERE...Pacific Coast beaches.
* WHEN...Through Tuesday evening.
* IMPACTS...Sneaker waves can unexpectedly run significantly
farther up the beach than normal, including over rocks and
jetties. Rip currents are typically more frequent and stronger
in the vicinity of jetties, inlets, and piers.
From: Nov 30, 2025 20:17
Until: Dec 01, 2025 06:00
Beach Hazards Statement
* WHAT...Moderate period northwesterly swell will result in an
increased risk for sneaker waves and rip currents. Breaking
waves of 13 to 16 feet are expected.
* WHERE...Pacific Coast beaches.
* WHEN...Through 10 PM PST this evening.
* IMPACTS...Sneaker waves can unexpectedly run significantly
farther up the beach than normal, including over rocks and
jetties. Rip currents are typically more frequent and stronger
in the vicinity of jetties, inlets, and piers.
From: Nov 30, 2025 09:28
Until: Nov 30, 2025 23:00
Dense Fog Advisory
* WHAT...Visibility one quarter mile or less in dense fog.
* WHERE...East Bay Interior Valleys.
* WHEN...Until 11 AM PST this morning.
* IMPACTS...Low visibility could make driving conditions hazardous.
Limited visibility will result in hazardous driving conditions.
From: Nov 25, 2025 11:38
Until: Nov 25, 2025 19:00
Dense Fog Advisory
* WHAT...Visibility one quarter mile or less in patchy dense fog.
* WHERE...San Francisco and San Francisco Bay Shoreline.
* WHEN...Until 11 AM PST this morning.
* IMPACTS...Low visibility could make driving conditions hazardous.
Limited visibility will result in hazardous driving conditions.
From: Nov 25, 2025 11:38
Until: Nov 25, 2025 19:00
Beach Hazards Statement
* WHAT...A long period northwesterly swell will result in an
increased risk for sneaker waves and rip currents. Breaking
waves of 13 to 18 feet are expected.
* WHERE...Pacific Coast beaches.
* WHEN...Through 10 AM PST Tuesday morning.
* IMPACTS...Sneaker waves can unexpectedly run significantly
farther up the beach than normal, including over rocks and
jetties. Rip currents are typically more frequent and stronger
in the vicinity of jetties, inlets, and piers.
From: Nov 25, 2025 03:34
Until: Nov 25, 2025 13:00
