High Surf Advisory
* WHAT...Large breaking waves up to 22 feet, strong rip currents
and sneaker waves.
* WHERE...Pacific Coast from Sonoma county to Monterey county,
excluding Northern Monterey Bay.
* WHEN...From 1 AM to 3 PM PST Thursday.
* IMPACTS...There is an increased risk for sneaker waves, strong
rip currents, and beach erosion. Large breaking waves can
overpower swimmers resulting in significant physical injury
and increase the risk of drowning.
From: Jan 07, 2026 09:01
Until: Jan 07, 2026 23:15
Extreme Cold Watch
* WHAT...Very cold conditions with temperatures in the low to mid 30s
possible except for Interior Monterey and San Benito Counties where
temperatures in the upper 20s are possible.
* WHERE...The East Bay and San Francisco Bay Shoreline, The Central
Coast, The Santa Clara Valley and Eastern Hills, The Salinas and
Carmel Valleys and Hollister Area, The Marin Hills, The Santa Cruz
Mountains, and North Bay Interior Valleys.
* WHEN...1 AM Friday to 9 AM Friday.
* IMPACTS...Cold conditions will be hazardous to sensitive
populations such as unhoused individuals. Cold conditions may
damage or kill sensitive crops, plants, and vegetation if
appropriate precautions are not taken. Prolonged exposure to the
cold conditions will lead to hypothermia for people, pets, and
livestock.
From: Jan 07, 2026 08:56
Until: Jan 07, 2026 17:00
Coastal Flood Advisory
* WHAT...Up to 1.2 ft of inundation above ground level is possible
in low-lying areas near shorelines and tidal waterways.
* WHERE...Low-lying areas adjacent to the San Francisco Bay.
* WHEN...Until 3 PM PST Monday.
* 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: 1.2 ft above normal (7.0 ft MLLW) at
12:08 PM Monday 1/5. High tide varies up to 90 minutes earlier
or later along the Pacific Coast and through the San Francisco
Bay, respectively.
From: Jan 05, 2026 13:34
Until: Jan 05, 2026 21:45
Coastal Flood Advisory
* WHAT...Up to 1.2 ft of inundation above ground level is
possible in low-lying near shorelines and tidal waterways.
* WHERE...Areas adjacent to the San Francisco and San Pablo Bays.
* WHEN...Until 3 PM PST Monday.
* 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: 1.2 ft above normal (7.0 ft MLLW) at 12:08 PM
Monday 1/5. High tide varies up to 90 minutes earlier or later
along the Pacific Coast and through the San Francisco Bay,
respectively.
From: Jan 05, 2026 05:36
Until: Jan 05, 2026 13:45
Coastal Flood Advisory
* WHAT...Up to 1.2 ft of inundation above ground level is
possible in low-lying near shorelines and tidal waterways.
* WHERE...Parts of San Francisco adjacent to San Francisco Bay.
* WHEN...Until 3 PM PST Monday.
* 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: 1.2 ft above normal (7.0 ft MLLW) at 12:08 PM
Monday 1/5. High tide varies up to 90 minutes earlier or later
along the Pacific Coast and through the San Francisco Bay,
respectively.
From: Jan 05, 2026 05:36
Until: Jan 05, 2026 13:45
Coastal Flood Advisory
* WHAT...For the Coastal Flood Advisory, up to 2 ft of
inundation above ground level is possible in low-lying near
shorelines and tidal waterways. For the Beach Hazards
Statement, long period northwesterly swell will result in
strong rip currents, sneaker waves, and breaking waves of up
to 20 feet can be expected.
* WHERE...San Francisco.
* WHEN...For the Coastal Flood Advisory, until 3 PM PST Monday.
For the Beach Hazards Statement, from 6 AM PST this morning
through this evening.
* IMPACTS...Flooding of lots, parks, and roads with only
isolated road closures expected. Dangerous conditions are
forecast along the shoreline. Hazards include sneaker waves,
strong rip currents, and large breaking waves.
* ADDITIONAL DETAILS...At the San Francisco tidal gauge, high
tide is expected to be:
1.9 ft above normal (7.7 ft MLLW) at 11:18 AM Sunday 1/4
1.2 ft above normal (7.0 ft MLLW) at 12:08 PM Monday 1/5
These predictions include up to 1 foot of storm surge that
will enhance the astronomical tide and flooding threat. High
tide varies up to 90 minutes earlier or later along the Pacific
Coast and through the San Francisco Bay, respectively.
From: Jan 04, 2026 09:35
Until: Jan 04, 2026 22:00
Beach Hazards Statement
* WHAT...For the Coastal Flood Advisory, up to 2 ft of
inundation above ground level is possible in low-lying near
shorelines and tidal waterways. For the Beach Hazards
Statement, long period northwesterly swell will result in
strong rip currents, sneaker waves, and breaking waves of up
to 20 feet can be expected.
* WHERE...Pacific Coast from Sonoma County to Monterey County
including the Monterey Bay.
* WHEN...For the Coastal Flood Advisory, until 2 PM PST Sunday.
For the Beach Hazards Statement, from Sunday morning through
Sunday evening.
* IMPACTS...Flooding of lots, parks, and roads with only
isolated road closures expected. Dangerous conditions are
forecast along the shoreline. Hazards include sneaker waves,
strong rip currents, and large breaking waves.
* ADDITIONAL DETAILS...At the San Francisco tidal gauge, high
tide is expected to be:
1.9 ft above normal (7.7 ft MLLW) at 11:18 AM Sunday 1/4
These predictions include up to 1 foot of storm surge that
will enhance the astronomical tide and flooding threat. High
tide varies up to 90 minutes earlier or later along the Pacific
Coast and through the San Francisco Bay, respectively.
From: Jan 04, 2026 09:35
Until: Jan 04, 2026 22:00
Beach Hazards Statement
* WHAT...For the Coastal Flood Advisory, up to 2 ft of
inundation above ground level is possible in low-lying near
shorelines and tidal waterways. For the Beach Hazards
Statement, long period northwesterly swell will result in
strong rip currents, sneaker waves, and breaking waves of up
to 20 feet can be expected.
* WHERE...San Francisco.
* WHEN...For the Coastal Flood Advisory, until 3 PM PST Monday.
For the Beach Hazards Statement, from 6 AM PST this morning
through this evening.
* IMPACTS...Flooding of lots, parks, and roads with only
isolated road closures expected. Dangerous conditions are
forecast along the shoreline. Hazards include sneaker waves,
strong rip currents, and large breaking waves.
* ADDITIONAL DETAILS...At the San Francisco tidal gauge, high
tide is expected to be:
1.9 ft above normal (7.7 ft MLLW) at 11:18 AM Sunday 1/4
1.2 ft above normal (7.0 ft MLLW) at 12:08 PM Monday 1/5
These predictions include up to 1 foot of storm surge that
will enhance the astronomical tide and flooding threat. High
tide varies up to 90 minutes earlier or later along the Pacific
Coast and through the San Francisco Bay, respectively.
From: Jan 04, 2026 09:35
Until: Jan 04, 2026 22:00
Coastal Flood Advisory
* WHAT...Up to 2 ft of inundation above ground level is possible
in low-lying near shorelines and tidal waterways.
* WHERE...Areas adjacent to the San Francisco and San Pablo Bays.
* WHEN...Until 3 PM PST Monday.
* 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:
1.9 ft above normal (7.7 ft MLLW) at 11:18 AM Sunday 1/4
1.2 ft above normal (7.0 ft MLLW) at 12:08 PM Monday 1/5
These predictions include up to 1 foot of storm surge that
will enhance the astronomical tide and flooding threat. High
tide varies up to 90 minutes earlier or later along the Pacific
Coast and through the San Francisco Bay, respectively.
From: Jan 04, 2026 09:35
Until: Jan 04, 2026 22:00
Coastal Flood Advisory
* WHAT...Up to 1.8 ft of inundation above ground level is
possible in low-lying areas near shorelines and tidal
waterways.
* WHERE...San Francisco Bay and San Pablo Bay shoreline,
Monterey Bay shoreline, and the Pacific Coast.
* WHEN...From 5 AM Wednesday to 2 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:
1.5 ft above normal (7.36 ft MLLW) at 7:51 AM Wednesday 12/31
1.7 ft above normal (7.55 ft MLLW) at 8:41 AM Thursday 1/1
1.8 ft above normal (7.66 ft MLLW) at 9:34 AM Friday 1/2
1.8 ft above normal (7.63 ft MLLW) at 10:26 AM Saturday 1/3
1.6 ft above normal (7.42 ft MLLW) at 11:18 AM Sunday 1/4
These predictions include 0.5 feet of storm surge that will
enhance the astronomical tide and flooding threat. High tide
varies up to 90 minutes earlier or later along the Pacific
Coast and through the San Francisco Bay, respectively.
From: Dec 31, 2025 13:00
Until: Jan 04, 2026 22:00
Coastal Flood Advisory
* WHAT...For the Coastal Flood Advisory, up to 2 ft of
inundation above ground level is possible in low-lying near
shorelines and tidal waterways. For the Beach Hazards
Statement, long period northwesterly swell will result in
strong rip currents, sneaker waves, and breaking waves of up
to 20 feet can be expected.
* WHERE...Pacific Coast from Sonoma County to Monterey County
including the Monterey Bay.
* WHEN...For the Coastal Flood Advisory, until 2 PM PST Sunday.
For the Beach Hazards Statement, from Sunday morning through
Sunday evening.
* IMPACTS...Flooding of lots, parks, and roads with only
isolated road closures expected. Dangerous conditions are
forecast along the shoreline. Hazards include sneaker waves,
strong rip currents, and large breaking waves.
* ADDITIONAL DETAILS...At the San Francisco tidal gauge, high
tide is expected to be:
1.9 ft above normal (7.7 ft MLLW) at 11:18 AM Sunday 1/4
These predictions include up to 1 foot of storm surge that
will enhance the astronomical tide and flooding threat. High
tide varies up to 90 minutes earlier or later along the Pacific
Coast and through the San Francisco Bay, respectively.
From: Jan 04, 2026 09:35
Until: Jan 04, 2026 22:00
Flood Advisory
* WHAT...Flooding caused by excessive rainfall is expected.
* WHERE...Central Alameda County in northern California...
South Central Contra Costa County in northern California...
* Until 1245 PM PST.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
Water over roadways. Overflowing poor drainage areas.
* ADDITIONAL DETAILS...
- At 950 AM PST, Doppler radar indicated heavy rain. Minor flooding
is ongoing or expected to begin shortly in the advisory area.
Between 0.5 and 1 inch of rain has fallen.
- Additional rainfall amounts of 0.2 to 0.7 inches are expected
over the area. This additional rain will result in minor
flooding.
- Some locations that will experience flooding include...
Oakland, Fremont, Hayward, San Leandro, San Ramon, Pleasanton,
Union City, Walnut Creek, Dublin, Newark, Danville, Castro
Valley, San Lorenzo, Fairview, Cherryland, Ashland, Sunol,
Diablo, Blackhawk-Camino Tassajara and Alamo.
- http://www.weather.gov/safety/flood
From: Jan 04, 2026 17:50
Until: Jan 04, 2026 20:45
Flood Advisory
* WHAT...Flooding caused by excessive rainfall is expected.
* WHERE...East Central San Mateo County in northern California...
Northwestern Santa Clara County in northern California...
* Until 1230 PM PST.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
Water over roadways. Overflowing poor drainage areas.
* ADDITIONAL DETAILS...
- At 935 AM PST, Doppler radar indicated heavy rain due to
thunderstorms. Minor flooding is ongoing or expected to begin
shortly in the advisory area. Between 1 and 1.5 inches of rain
have fallen.
- Additional rainfall amounts of 0.5 to 1 inch are expected over
the area. This additional rain will result in minor flooding.
- Some locations that will experience flooding include...
San Jose, Fremont, Sunnyvale, Redwood City, Mountain View, Palo
Alto, Cupertino, Menlo Park, Los Altos, East Palo Alto, Los Altos
Hills, Atherton, Woodside, Stanford, North Fair Oaks, Portola
Valley, West Menlo Park and Loyola.
- http://www.weather.gov/safety/flood
From: Jan 04, 2026 17:35
Until: Jan 04, 2026 20:30
Coastal Flood Advisory
* WHAT...Up to 2.5 ft of inundation above ground level is
possible in low-lying areas near shorelines and tidal
waterways.
* WHERE...Pacific Coast from Sonoma County to Monterey County
including the Monterey Bay.
* WHEN...Until 2 PM PST Sunday.
* IMPACTS...Flooding of lots, parks, and roads with some road
closures expected.
* ADDITIONAL DETAILS...At the San Francisco tidal gauge, high
tide is expected to be:
2.5 ft above normal (8.3 ft MLLW) at 10:26 AM Saturday 1/3
1.9 ft above normal (7.7 ft MLLW) at 11:18 AM Sunday 1/4
These predictions include up to 1.3 feet of storm surge that
will enhance the astronomical tide and flooding threat. High
tide varies up to 90 minutes earlier or later along the
Pacific Coast and through the San Francisco Bay, respectively.
From: Jan 02, 2026 19:20
Until: Jan 03, 2026 13:00
Coastal Flood Warning
* WHAT...For the Coastal Flood Warning, significant coastal
flooding expected due to high astronomical tides and storm
surge. Up to 2.5 ft of inundation above ground level is
possible in low-lying areas near shorelines and tidal
waterways during the morning high tide Saturday. For the
Coastal Flood Advisory, up to 2.0 ft inundation is
possible.
* WHERE...San Francisco and San Pablo Bays.
* WHEN...For the Coastal Flood Warning, from 7 AM Friday to 2 PM
PST Saturday. For the Coastal Flood Advisory, from 2 PM
Saturday to 2 PM PST Sunday.
* IMPACTS...Numerous roads will be closed. Low lying property
including homes, businesses, and some critical infrastructure
will be inundated. Some shoreline erosion will occur.
* ADDITIONAL DETAILS...At the San Francisco tidal gauge, high
tide is expected to be:
2.5 ft above normal (8.3 ft MLLW) at 10:26 AM Saturday 1/3
1.9 ft above normal (7.7 ft MLLW) at 11:18 AM Sunday 1/4
These predictions include up to 1.3 feet of storm surge that
will enhance the astronomical tide and flooding threat. High
tide varies up to 90 minutes earlier or later along the
Pacific Coast and through the San Francisco Bay, respectively.
From: Jan 02, 2026 19:20
Until: Jan 03, 2026 13:00
Coastal Flood Advisory
* WHAT...For the Coastal Flood Warning, significant coastal
flooding expected due to high astronomical tides and storm
surge. Up to 2.5 ft of inundation above ground level is
possible in low-lying areas near shorelines and tidal
waterways during the morning high tide Saturday. For the
Coastal Flood Advisory, up to 2.0 ft inundation is
possible.
* WHERE...San Francisco and San Pablo Bays.
* WHEN...For the Coastal Flood Warning, from 7 AM Friday to 2 PM
PST Saturday. For the Coastal Flood Advisory, from 2 PM
Saturday to 2 PM PST Sunday.
* IMPACTS...Numerous roads will be closed. Low lying property
including homes, businesses, and some critical infrastructure
will be inundated. Some shoreline erosion will occur.
* ADDITIONAL DETAILS...At the San Francisco tidal gauge, high
tide is expected to be:
2.5 ft above normal (8.3 ft MLLW) at 10:26 AM Saturday 1/3
1.9 ft above normal (7.7 ft MLLW) at 11:18 AM Sunday 1/4
These predictions include up to 1.3 feet of storm surge that
will enhance the astronomical tide and flooding threat. High
tide varies up to 90 minutes earlier or later along the
Pacific Coast and through the San Francisco Bay, respectively.
From: Jan 02, 2026 19:20
Until: Jan 03, 2026 13:00
Wind Advisory
* WHAT...South winds 15 to 25 mph with gusts up to 50 mph.
* WHERE...The Central Coast, The Salinas and Carmel Valleys and
Hollister Area, The Marin Hills, Western Sonoma County Hills, The
Santa Cruz Mountains, San Francisco, North Bay Interior Mountains,
Coastal North Bay Including Point Reyes National Seashore, San
Francisco Peninsula Coast, and East Bay Hills.
* WHEN...Until 1 PM PST Saturday.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
From: Jan 02, 2026 21:10
Until: Jan 03, 2026 06:00
Coastal Flood Advisory
* WHAT...Up to 2.5 ft of inundation above ground level is
possible in low-lying areas near shorelines and tidal
waterways.
* WHERE...Pacific Coast from Sonoma County to Monterey County
including the Monterey Bay.
* WHEN...Until 2 PM PST Sunday.
* IMPACTS...Flooding of lots, parks, and roads with some road
closures expected.
* ADDITIONAL DETAILS...At the San Francisco tidal gauge, high
tide is expected to be:
2.2 ft above normal (8.0 ft MLLW) at 9:34 AM Friday 1/2
2.5 ft above normal (8.3 ft MLLW) at 10:26 AM Saturday 1/3
1.9 ft above normal (7.7 ft MLLW) at 11:18 AM Sunday 1/4
These predictions include up to 1.3 feet of storm surge that
will enhance the astronomical tide and flooding threat. High
tide varies up to 90 minutes earlier or later along the
Pacific Coast and through the San Francisco Bay, respectively.
From: Jan 02, 2026 14:42
Until: Jan 02, 2026 23:00
Coastal Flood Advisory
* WHAT...For the Coastal Flood Warning, significant coastal
flooding expected due to high astronomical tides and storm
surge. Up to 2.5 ft of inundation above ground level is
possible in low-lying areas near shorelines and tidal
waterways during the morning high tide Friday and Saturday.
For the Coastal Flood Advisory, up to 2.0 ft inundation is
possible.
* WHERE...San Francisco and San Pablo Bays.
* WHEN...For the Coastal Flood Warning, from 7 AM Friday to 2 PM
PST Saturday. For the Coastal Flood Advisory, from 2 PM
Saturday to 2 PM PST Sunday.
* IMPACTS...Numerous roads will be closed. Low lying property
including homes, businesses, and some critical infrastructure
will be inundated. Some shoreline erosion will occur.
* ADDITIONAL DETAILS...At the San Francisco tidal gauge, high
tide is expected to be:
2.2 ft above normal (8.0 ft MLLW) at 9:34 AM Friday 1/2
2.5 ft above normal (8.3 ft MLLW) at 10:26 AM Saturday 1/3
1.9 ft above normal (7.7 ft MLLW) at 11:18 AM Sunday 1/4
These predictions include up to 1.3 feet of storm surge that
will enhance the astronomical tide and flooding threat. High
tide varies up to 90 minutes earlier or later along the
Pacific Coast and through the San Francisco Bay, respectively.
From: Jan 02, 2026 14:42
Until: Jan 02, 2026 23:00
Coastal Flood Warning
* WHAT...For the Coastal Flood Warning, significant coastal
flooding expected due to high astronomical tides and storm
surge. Up to 2.5 ft of inundation above ground level is
possible in low-lying areas near shorelines and tidal
waterways during the morning high tide Friday and Saturday.
For the Coastal Flood Advisory, up to 2.0 ft inundation is
possible.
* WHERE...San Francisco and San Pablo Bays.
* WHEN...For the Coastal Flood Warning, from 7 AM Friday to 2 PM
PST Saturday. For the Coastal Flood Advisory, from 2 PM
Saturday to 2 PM PST Sunday.
* IMPACTS...Numerous roads will be closed. Low lying property
including homes, businesses, and some critical infrastructure
will be inundated. Some shoreline erosion will occur.
* ADDITIONAL DETAILS...At the San Francisco tidal gauge, high
tide is expected to be:
2.2 ft above normal (8.0 ft MLLW) at 9:34 AM Friday 1/2
2.5 ft above normal (8.3 ft MLLW) at 10:26 AM Saturday 1/3
1.9 ft above normal (7.7 ft MLLW) at 11:18 AM Sunday 1/4
These predictions include up to 1.3 feet of storm surge that
will enhance the astronomical tide and flooding threat. High
tide varies up to 90 minutes earlier or later along the
Pacific Coast and through the San Francisco Bay, respectively.
From: Jan 02, 2026 14:42
Until: Jan 02, 2026 23:00
Wind Advisory
* WHAT...South winds 15 to 25 mph with gusts up to 50 mph expected.
* WHERE...The Central Coast, The Salinas and Carmel Valleys and
Hollister Area, The Marin Hills, Western Sonoma County Hills, The
Santa Cruz Mountains, San Francisco, North Bay Interior Mountains,
Coastal North Bay Including Point Reyes National Seashore, San
Francisco Peninsula Coast, and East Bay Hills.
* WHEN...From 1 PM Friday to 1 PM PST Saturday.
* IMPACTS...Gusty winds will blow around unsecured objects. Tree
limbs could be blown down and a few power outages may result.
From: Jan 01, 2026 10:06
Until: Jan 02, 2026 14:00
Coastal Flood Advisory
* WHAT...Up to 2.5 ft of inundation above ground level is
possible in low-lying areas near shorelines and tidal
waterways.
* WHERE...San Francisco Bay and San Pablo Bay shoreline,
Monterey Bay shoreline, and the Pacific Coast.
* WHEN...Until 2 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:
2.2 ft above normal (8.0 ft MLLW) at 9:34 AM Friday 1/2
2.5 ft above normal (8.3 ft MLLW) at 10:26 AM Saturday 1/3
1.8 ft above normal (7.6 ft MLLW) at 11:18 AM Sunday 1/4
These predictions include up to 1.3 feet of storm surge that
will enhance the astronomical tide and flooding threat.
High tide varies up to 90 minutes earlier or later along
the Pacific Coast and through the San Francisco Bay,
respectively.
From: Jan 01, 2026 21:20
Until: Jan 02, 2026 13:00
Coastal Flood Advisory
* WHAT...Up to 2.2 ft of inundation above ground level is
possible in low-lying areas near shorelines and tidal
waterways.
* WHERE...San Francisco Bay and San Pablo Bay shoreline,
Monterey Bay shoreline, and the Pacific Coast.
* WHEN...Until 2 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:
2.0 ft above normal (7.8 ft MLLW) at 8:41 AM Thursday 1/1
2.2 ft above normal (8.0 ft MLLW) at 9:34 AM Friday 1/2
2.2 ft above normal (8.0 ft MLLW) at 10:26 AM Saturday 1/3
1.8 ft above normal (7.6 ft MLLW) at 11:18 AM Sunday 1/4
These predictions include up to 1.0 feet of storm surge that
will enhance the astronomical tide and flooding threat. High
tide varies up to 90 minutes earlier or later along the
Pacific Coast and through the San Francisco Bay, respectively.
From: Dec 31, 2025 20:30
Until: Jan 01, 2026 13:00
Coastal Flood Advisory
* WHAT...Up to 2.2 ft of inundation above ground level is
possible in low-lying areas near shorelines and tidal
waterways.
* WHERE...San Francisco Bay and San Pablo Bay shoreline,
Monterey Bay shoreline, and the Pacific Coast.
* WHEN...From 5 AM Wednesday to 2 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:
1.5 ft above normal (7.3 ft MLLW) at 7:51 AM Wednesday 12/31
2.0 ft above normal (7.8 ft MLLW) at 8:41 AM Thursday 1/1
2.2 ft above normal (8.0 ft MLLW) at 9:34 AM Friday 1/2
2.2 ft above normal (8.0 ft MLLW) at 10:26 AM Saturday 1/3
1.8 ft above normal (7.6 ft MLLW) at 11:18 AM Sunday 1/4
These predictions include up to 1.0 feet of storm surge that
will enhance the astronomical tide and flooding threat. High
tide varies up to 90 minutes earlier or later along the
Pacific Coast and through the San Francisco Bay, respectively.
From: Dec 31, 2025 08:27
Until: Dec 31, 2025 22:00
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...The Northern San Francisco Bay Area (Napa, Sonoma, and
Marin counties).
* WHEN...Through this 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...
- Soils are saturated from the last few days of rain. Showers and
thunderstorm with high rain rates may lead to flash flooding and
the potential for landslides.
- http://www.weather.gov/safety/flood
From: Dec 26, 2025 13:38
Until: Dec 27, 2025 06:00
High Surf Advisory
* WHAT...Large breaking waves up to 25 feet, strong rip currents
and sneaker waves.
* WHERE...Pacific Coast beaches.
* WHEN...Until 10 PM PST this evening.
* IMPACTS...Dangerous swimming and surfing conditions and
localized beach erosion.
From: Dec 26, 2025 22:28
Until: Dec 27, 2025 06:00
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 this 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...
- Soils are saturated from the last few days of rain. Showers and
thunderstorm with high rain rates may lead to flash flooding and
the potential for landslides.
- http://www.weather.gov/safety/flood
From: Dec 26, 2025 13:38
Until: Dec 27, 2025 06:00
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 24, 2025 22:48
Until: Dec 26, 2025 15:15
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...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 2-4" is
possible over the North Bay Mountains and 1-3" over the North Bay
Valleys by Friday. Nuisance flooding will increase through Friday
with 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
From: Dec 24, 2025 22:48
Until: Dec 26, 2025 15:15
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
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
Special Weather Statement
At 417 PM PST, Doppler radar was tracking a strong thunderstorm 9
miles west of Boulder Creek, or 17 miles southwest of Saratoga,
moving north at 35 mph.
HAZARD...Wind gusts up to 40 mph and pea size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Sunnyvale, Redwood City, Mountain View, Palo Alto, Cupertino, Menlo
Park, Los Altos, Los Altos Hills, Atherton, Woodside, Stanford,
Portola Valley, West Menlo Park, Loyola and Emerald Lake Hills.
From: Dec 26, 2025 00:17
Until: Dec 26, 2025 00:45
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
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
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
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
