Dense Fog Advisory
* WHAT...Visibility one quarter mile or less in dense fog.
* WHERE...Central Sacramento Valley, Northern San Joaquin Valley,
and Southern Sacramento Valley.
* WHEN...Until noon PST today.
* IMPACTS...Low visibility could make driving conditions hazardous.
From: Jan 22, 2026 15:16
Until: Jan 22, 2026 20:00
Dense Fog Advisory
* WHAT...Visibility one quarter mile or less in dense fog.
* WHERE...Carquinez Strait and Delta, Central and Southern
Sacramento Valley, and Northern San Joaquin Valley.
* WHEN...Until noon PST Wednesday.
* IMPACTS...Low visibility could make driving conditions hazardous.
From: Jan 21, 2026 06:56
Until: Jan 21, 2026 20:00
Dense Fog Advisory
* WHAT...Visibility one quarter mile or less in dense fog.
* WHERE...Carquinez Strait and Delta, Central Sacramento Valley,
Northern San Joaquin Valley, and Southern Sacramento Valley.
* WHEN...Until noon PST today.
* IMPACTS...Low visibility could make driving conditions hazardous.
From: Jan 19, 2026 11:01
Until: Jan 19, 2026 20:00
Dense Fog Advisory
* WHAT...Visibility one quarter mile or less in dense fog.
* WHERE...Carquinez Strait and Delta, Central and Southern
Sacramento Valley, and Northern San Joaquin Valley.
* WHEN...Until noon PST Monday.
* IMPACTS...Low visibility could make driving conditions hazardous.
From: Jan 19, 2026 04:34
Until: Jan 19, 2026 20:00
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...From late Thursday night through Friday morning.
* 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 08, 2026 03:34
Until: Jan 08, 2026 13:00
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 Thursday to 10 PM PST Friday.
* 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 22:51
Until: Jan 08, 2026 12:00
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...From late Thursday night through Friday morning.
* 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 16:58
Until: Jan 08, 2026 04:00
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
Flood Watch
* WHAT...Flooding caused by excessive rainfall continues to be
possible. Additional rainfall of 0.75 to 3 inches is expected
below 4000 ft, highest amounts expected over Shasta County and the
foothills.
* WHERE...A portion of northern California, including the following
areas, Central Sacramento Valley, Motherlode, Mountains
Southwestern Shasta County to Western Colusa County, Northeast
Foothills/Sacramento Valley, Northern Sacramento Valley, Shasta
Lake Area / Northern Shasta County and Southern Sacramento Valley.
* WHEN...Through Monday afternoon.
* IMPACTS...Excessive runoff will result in rises along area rivers,
creeks, streams. Small streams and creeks may rise out of their
banks. Flooding may occur in low-lying, poor drainage, and urban
areas. Mudslides and rockslides may occur in mountain and foothill
areas.
* ADDITIONAL DETAILS...
- http://www.weather.gov/safety/flood
From: Jan 04, 2026 20:49
Until: Jan 06, 2026 00:00
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
Flood Watch
* WHAT...Flooding caused by excessive rainfall continues to be
possible. Additional rainfall of 1 to 3 inches is expected below
4000 ft, highest in the foothills.
* WHERE...A portion of northern California below 4000 feet in
elevation, including the following areas, Sacramento Valley,
Motherlode, Mountains Southwestern Shasta County to Western Colusa
County, Northeast foothills, and Shasta Lake Area / Northern
Shasta County.
* WHEN...Through Monday afternoon.
* IMPACTS...Excessive runoff will result in rises along area rivers,
creeks, streams. Small streams and creeks may rise out of their
banks. Flooding may occur in low-lying, poor drainage, and urban
areas. Mudslides and rockslides may occur in mountain and foothill
areas.
* ADDITIONAL DETAILS...
- http://www.weather.gov/safety/flood
From: Jan 04, 2026 07:55
Until: Jan 05, 2026 00:15
Flood Watch
An Atmospheric River Event will bring moderate to heavy rain this
weekend through Monday evening. The prolonged period of rain will
bring the risk of flooding to the Sacramento Valley, Shasta County,
northern Sierra Nevada and adjacent foothills, as well as the
Coastal Range. This will be for elevations below 4000 feet.
* WHAT...Flooding caused by excessive rainfall continues to be
possible.
* WHERE...A portion of northern California below 4000 feet in
elevation, including the following areas, Sacramento Valley,
Motherlode, Mountains Southwestern Shasta County to Western Colusa
County, Northeast foothills, and Shasta Lake Area / Northern
Shasta County.
* WHEN...Through Monday afternoon.
* IMPACTS...Excessive runoff will result in rises along area rivers,
creeks, streams. Small streams and creeks may rise out of their
banks. Flooding may occur in low-lying, poor drainage, and urban
areas. Mudslides and rockslides may occur in mountain and foothill
areas.
* ADDITIONAL DETAILS...
- http://www.weather.gov/safety/flood
From: Jan 03, 2026 18:32
Until: Jan 05, 2026 00:00
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
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...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 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 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:
1.9 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 03, 2026 21:46
Until: Jan 04, 2026 22:00
Flood Advisory
* WHAT...Flooding caused by excessive rainfall continues.
* WHERE...Southeastern Napa County in northern California...
Southeastern Sonoma County in northern California...
* Until 600 AM PST.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
* ADDITIONAL DETAILS...
- At 331 AM PST, Doppler radar indicated heavy rain. Minor flooding
is ongoing or expected to begin shortly in the advisory area. Up
to 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...
Napa.
- http://www.weather.gov/safety/flood
From: Jan 04, 2026 11:31
Until: Jan 04, 2026 14:00
Flood Advisory
* WHAT...Flooding caused by excessive rainfall continues.
* WHERE...Northwestern San Mateo County in northern California...
* Until 500 AM PST.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
* ADDITIONAL DETAILS...
- At 330 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 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...
San Francisco, San Mateo, South San Francisco, San Bruno,
Pacifica, Burlingame, Millbrae, Half Moon Bay, Hillsborough, El
Granada, Highlands-Baywood Park, Brisbane, Montara and Moss
Beach.
- http://www.weather.gov/safety/flood
From: Jan 04, 2026 11:30
Until: Jan 04, 2026 13:00
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 03, 2026 21:46
Until: Jan 04, 2026 13:00
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 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 03, 2026 21:46
Until: Jan 04, 2026 13:00
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 03, 2026 21:46
Until: Jan 04, 2026 13:00
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...San Francisco.
* 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 03, 2026 21:46
Until: Jan 04, 2026 13:00
Flood Advisory
* WHAT...Flooding caused by excessive rainfall is expected.
* WHERE...Central San Mateo County in northern California...
* Until 500 AM PST.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
* ADDITIONAL DETAILS...
- At 201 AM PST, Doppler radar indicated heavy rain. Minor flooding
is ongoing or expected to begin shortly in the advisory area. Up
to 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...
San Mateo, Redwood City, Menlo Park, Foster City, San Carlos,
Belmont, Half Moon Bay, Hillsborough, Atherton, Woodside,
Highlands-Baywood Park, North Fair Oaks, Portola Valley, Emerald
Lake Hills, West Menlo Park and Highlands.
- http://www.weather.gov/safety/flood
From: Jan 04, 2026 10:01
Until: Jan 04, 2026 13:00
Flood Advisory
* WHAT...Flooding caused by excessive rainfall is expected.
* WHERE...Western Alameda County in northern California...
Central Contra Costa County in northern California...
* Until 500 AM PST.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
* ADDITIONAL DETAILS...
- At 205 AM PST, Doppler radar indicated heavy rain. Minor flooding
is ongoing or expected to begin shortly in the advisory area. Up
to 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, San
Leandro, Mountain View, Alameda, San Ramon, Pleasanton, Union
City, Walnut Creek, Pittsburg, Dublin, Danville, Martinez,
Pleasant Hill, San Pablo and Lafayette.
- http://www.weather.gov/safety/flood
From: Jan 04, 2026 10:05
Until: Jan 04, 2026 13:00
Flood Advisory
* WHAT...Flooding caused by excessive rainfall is expected.
* WHERE...Southeastern San Mateo County in northern California...
West Central Santa Clara County in northern California...
Central Santa Cruz County in northern California...
* Until 445 AM PST.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
* ADDITIONAL DETAILS...
- At 138 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 1 inch of rain has fallen.
- Additional rainfall amounts up to 2 inches are expected over the
area. This additional rain will result in minor flooding.
- Some locations that will experience flooding include...
San Jose, Palo Alto, Santa Cruz, Cupertino, Campbell, Saratoga,
Los Gatos, Corralitos, Scotts Valley, Boulder Creek, Ben Lomond,
Felton, Aptos, Eureka Canyon Road, Uvas Canyon Park, Brown Valley
Road, Portola Valley, Monte Sereno, Lexington Hills and Day
Valley.
- http://www.weather.gov/safety/flood
From: Jan 04, 2026 09:38
Until: Jan 04, 2026 12:45
Flood Watch
An Atmospheric River Event will bring moderate to heavy rain this
evening through Monday evening. The prolonged period of rain will
bring the risk of flooding to the Sacramento Valley, Shasta County,
northern Sierra Nevada and adjacent foothills, as well as the
Coastal Range. This will be for elevations below 4000 feet.
* WHAT...Flooding caused by excessive rainfall is possible.
* WHERE...A portion of northern California below 4000 feet in
elevation, including the following areas, Sacramento Valley,
Motherlode, Mountains Southwestern Shasta County to Western Colusa
County, Northeast Foothills, and Shasta Lake Area / Northern
Shasta County.
* WHEN...From this evening through Monday afternoon.
* IMPACTS...Excessive runoff will result in rises along area rivers,
creeks, streams. Small streams and creeks may rise out of their
banks. Flooding may occur in low-lying, poor drainage, and urban
areas. Mudslides and rockslides may occur in mountain and foothill
areas.
* ADDITIONAL DETAILS...
- http://www.weather.gov/safety/flood
From: Jan 02, 2026 17:25
Until: Jan 04, 2026 00:00
Flood Advisory
* WHAT...Urban area and small stream flooding caused by recent
rainfall across the region.
* WHERE...Northwestern Marin County in northern California...
Southeastern Sonoma County in northern California...
* Until 400 PM PST Saturday.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
Rises in small streams and normally dry arroyos. River or stream
flows are elevated.
* ADDITIONAL DETAILS...
- At 932 AM PST, Runoff from recent rainfall is causing urban and
small stream flooding. Overflowing poor drainage areas have
already caused minor flooding in the advisory area. Mark West
Creek, Colgan Creek, Wiggins Creek, and Santa Rosa Creek are in
action and/or minor flood stage. Additionally, law enforcement
has reported flooding in and around Valley Ford.
- Some locations that will experience flooding include...
Santa Rosa, Petaluma, Rohnert Park, Windsor, Sebastopol, Cotati,
Tomales, Dillon Beach, Point Reyes Station, South Santa Rosa Cdp,
Roseland, Forestville, Inverness, Occidental, South Santa Rosa,
Graton and Bodega Bay.
- http://www.weather.gov/safety/flood
From: Jan 03, 2026 17:39
Until: Jan 04, 2026 00:00
Beach Hazards Statement
* 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...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 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 03, 2026 06:59
Until: Jan 03, 2026 22:00
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...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 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 03, 2026 06:59
Until: Jan 03, 2026 22:00
Beach Hazards Statement
* 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.
* WHEN...For the Coastal Flood Warning, until 2 PM PST Saturday.
For the Coastal Flood Advisory, from 2 PM Saturday to 2 PM PST
Sunday. For the Beach Hazards Statement, from Sunday morning
through Sunday evening.
* 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 03, 2026 06:59
Until: Jan 03, 2026 22:00
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...Adjacent to the San Francisco and San Pablo Bays.
* WHEN...For the Coastal Flood Warning, until 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 03, 2026 06:59
Until: Jan 03, 2026 22:00
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.
* WHEN...For the Coastal Flood Warning, until 2 PM PST Saturday.
For the Coastal Flood Advisory, from 2 PM Saturday to 2 PM PST
Sunday. For the Beach Hazards Statement, from Sunday morning
through Sunday evening.
* 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 03, 2026 06:59
Until: Jan 03, 2026 22:00
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...Adjacent to the San Francisco and San Pablo Bays.
* WHEN...For the Coastal Flood Warning, until 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 03, 2026 06:59
Until: Jan 03, 2026 22:00
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.
* WHEN...For the Coastal Flood Warning, until 2 PM PST Saturday.
For the Coastal Flood Advisory, from 2 PM Saturday to 2 PM PST
Sunday. For the Beach Hazards Statement, from Sunday morning
through Sunday evening.
* 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 03, 2026 06:59
Until: Jan 03, 2026 22:00
Flood Advisory
* WHAT...Flooding caused by excessive rainfall is expected.
* WHERE...Southeastern Marin County in northern California...
Central Napa County in northern California...
Southeastern Sonoma County in northern California...
* Until 715 AM PST.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
* ADDITIONAL DETAILS...
- At 413 AM PST, local law enforcement reported heavy rain in the
advisory area. Minor flooding is already occurring. Between 1 and
2 inches of rain have 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...
Napa, Petaluma, San Rafael, Novato, Mill Valley, San Anselmo,
Larkspur, Sonoma, Corte Madera, Fairfax, Boyes Hot Springs, Black
Point-Green Point, Lucas Valley-Marinwood, Kentfield, San
Geronimo, Tamalpais-Homestead Valley, Stinson Beach, Muir Beach,
Yountville and Ross.
- http://www.weather.gov/safety/flood
From: Jan 03, 2026 12:13
Until: Jan 03, 2026 15:15
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...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 03, 2026 05:41
Until: Jan 03, 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...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 07:01
Until: Jan 02, 2026 15:00
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 Bay.
* 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 likely 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 07:01
Until: Jan 02, 2026 15:00
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 Bay.
* 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 likely 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 07:01
Until: Jan 02, 2026 15:00
