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
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 08, 2026 11:27
Until: Jan 10, 2026 06:00
Cold Weather Advisory
* WHAT...Cold conditions with temperatures in the low to mid 30s
expected.
* WHERE...The East Bay Hills and Valleys, Monterey Bay and the Big
Sur Coast, The Marin Hills, The Santa Cruz Mountains, The Santa
Clara Valley, North Bay Interior Valleys, and Northern Salinas
Valley/Hollister Valley and Carmel Valley.
* WHEN...From 1 AM to 9 AM PST Friday.
* IMPACTS...Cold conditions will be hazardous to sensitive
populations such as unhoused individuals. Prolonged exposure to the
cold conditions will lead to hypothermia for people, pets, and
livestock. Cold conditions may damage or kill sensitive crops,
plants, and vegetation if appropriate precautions are not taken.
From: Jan 08, 2026 07:54
Until: Jan 08, 2026 23:00
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
Flood Warning
* WHAT...Flooding caused by excessive rainfall is expected.
* WHERE...Areas near and downstream of Mark West Creek near Mirabel
Heights
* Until 800 AM PST Wednesday.
* IMPACTS...Flooding of rivers, creeks, streams, and other low-lying
and flood-prone locations is imminent or occurring. Streams
continue to rise due to excess runoff from earlier rainfall. It
will take several hours for all the water from these storms to work
through local drainage systems in urban areas.
* ADDITIONAL DETAILS...
- At 312 PM PST, Doppler radar and automated rain gauges indicated
heavy rain. Flooding is already occurring in the warned area.
Between 2 and 3 inches of rain have fallen.
- Additional rainfall amounts of 0.5 to 1.5 inches are possible in
the warned area.
- Some locations that will experience flooding include...
Santa Rosa, Rohnert Park, Windsor, Sebastopol, Cotati,
Larkfield-Wikiup, South Santa Rosa Cdp, Forestville and Graton.
- http://www.weather.gov/safety/flood
From: Jan 05, 2026 23:13
Until: Jan 07, 2026 16:00
High Surf Advisory
* WHAT...Large breaking waves up to 22 feet, strong rip currents
and sneaker waves.
* WHERE...Pacific Coast.
* 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 06, 2026 07:43
Until: Jan 07, 2026 09:00
Flood Advisory
* WHAT...River and stream flooding caused by excessive rainfall is
expected.
* WHERE...Areas west of a line from Cotati to Healdsburg in the
Sonoma coastal range.
* Until 1230 AM PST Wednesday.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
River or stream flows are elevated.
* ADDITIONAL DETAILS...
- At 548 PM PST, River gauge reports indicated minor flooding. The
Russian River at Guerneville is now in action stage, with a
forecast to fall below action stage after around midnight. The
Russian River near Guernville is also in action stage, while also
forecast to recede below action stage around midnight.
- Flooding impacts will continue, but no additional rainfall is
expected.
- Some locations that will experience flooding include...
Santa Rosa, Rohnert Park, Windsor, Healdsburg, Sebastopol,
Cotati, Tomales, Larkfield-Wikiup, Dillon Beach, Roseland, South
Santa Rosa Cdp, Forestville, Guerneville, Occidental, Graton,
Monte Rio, Bodega Bay and South Santa Rosa.
- http://www.weather.gov/safety/flood
From: Jan 07, 2026 01:49
Until: Jan 07, 2026 08:30
Flood Advisory
* WHAT...River and stream flooding caused by excessive rainfall is
expected.
* WHERE...Areas west of a line from Cotati to Healdsburg in the
Sonoma coastal range.
* Until 1230 PM PST Tuesday.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
River or stream flows are elevated.
* ADDITIONAL DETAILS...
- At 1214 AM PST, Doppler radar and automated rain gauges indicated
heavy rain. Minor flooding is already occurring in the advisory
area. Between 2 and 6 inches of rain have fallen.
- Additional rainfall amounts up to 0.5 inches are expected over
the area.
- Some locations that will experience flooding include...
Santa Rosa, Rohnert Park, Windsor, Healdsburg, Sebastopol,
Cotati, Tomales, Larkfield-Wikiup, Dillon Beach, Roseland, South
Santa Rosa Cdp, Forestville, Guerneville, Occidental, Graton,
Monte Rio, Bodega Bay and South Santa Rosa.
- http://www.weather.gov/safety/flood
From: Jan 06, 2026 08:16
Until: Jan 06, 2026 20:30
Flood Advisory
* WHAT...Stream and river flooding caused by excessive rainfall is
ongoing.
* WHERE...Areas west of a line from Cotati to Healdsburg in the
Sonoma coastal range.
* Until 1115 AM PST.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
River or stream flows are elevated.
* ADDITIONAL DETAILS...
- At 651 AM PST, River gauge reports indicated minor flooding.
Overflowing poor drainage areas have already caused minor
flooding along the Russian River at Geyserville. Up to 6 inches
of rain have fallen.
- Little to no rainfall is expected is over the area between now
and when the advisory expires.
- Some locations that will experience flooding include...
Healdsburg and Cloverdale.
- http://www.weather.gov/safety/flood
From: Jan 06, 2026 14:51
Until: Jan 06, 2026 19:15
Flood Advisory
* WHAT...Stream and river flooding caused by excessive rainfall is
ongoing.
* WHERE...Northwestern Sonoma County in northern California...
* Until 715 AM PST Tuesday.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
Rises in small streams and normally dry arroyos.
* ADDITIONAL DETAILS...
- At 1112 PM PST, River gauge reports indicated minor flooding.
Overflowing poor drainage areas have already caused minor
flooding along the Russian River at Geyserville. Up to 6 inches
of rain have fallen.
- Additional rainfall amounts up to 0.5 inches are expected over
the area.
- Some locations that will experience flooding include...
Healdsburg and Cloverdale.
- http://www.weather.gov/safety/flood
From: Jan 06, 2026 07:13
Until: Jan 06, 2026 15:15
Flood Advisory
* WHAT...River and stream flooding caused by excessive rainfall is
expected.
* WHERE...North Central Sonoma County in northern California...
* Until 530 AM PST Tuesday.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
* ADDITIONAL DETAILS...
- At 1124 PM PST, River gauge reports indicated minor flooding. The
Russian River at Jimtown is now in minor flood stage.
- Some locations that will experience flooding include...
Healdsburg.
- http://www.weather.gov/safety/flood
From: Jan 06, 2026 07:25
Until: Jan 06, 2026 13:30
Flood Advisory
* WHAT...Urban area and small stream flooding caused by excessive
rainfall continues.
* WHERE...Western Alameda County in northern California...
Western Contra Costa County in northern California...
* Until 1245 AM PST.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
Water over roadways.
* ADDITIONAL DETAILS...
- At 924 PM PST, Doppler radar indicated heavy rain. This is
causing urban and small stream flooding. Between 0.5 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, San
Leandro, Mountain View, Alameda, San Ramon, Pleasanton, Union
City, Walnut Creek, Dublin, Newark, Danville, Martinez, Pleasant
Hill, San Pablo and Lafayette.
- http://www.weather.gov/safety/flood
From: Jan 06, 2026 05:24
Until: Jan 06, 2026 08:45
Flood Advisory
* WHAT...Flooding caused by excessive rainfall continues.
* WHERE...Areas west of a line from Cotati to Healdsburg in the
Sonoma coastal range.
* Until 1230 AM PST Tuesday.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
Water over roadways. River or stream flows are elevated.
* ADDITIONAL DETAILS...
- At 608 PM PST, Doppler radar and automated rain gauges indicated
heavy rain. Minor flooding is already occurring in the advisory
area. Between 2 and 4.5 inches of rain have fallen.
- Additional rainfall amounts of 0.1 to 0.5 inches are expected
over the area. This additional rain will result in minor
flooding.
- Some locations that will experience flooding include...
Santa Rosa, Rohnert Park, Windsor, Healdsburg, Sebastopol,
Cotati, Tomales, Larkfield-Wikiup, Dillon Beach, Roseland, South
Santa Rosa Cdp, Forestville, Guerneville, Occidental, Graton,
Monte Rio, Bodega Bay and South Santa Rosa.
- http://www.weather.gov/safety/flood
From: Jan 06, 2026 02:09
Until: Jan 06, 2026 08:30
Flood Advisory
* WHAT...Urban area and small stream flooding caused by excessive
rainfall continues.
* WHERE...Marin County in northern California...
Southeastern Sonoma County in northern California...
* Until 1100 PM PST.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
Water over roadways.
* ADDITIONAL DETAILS...
- At 838 PM PST, Doppler radar indicated heavy rain. This will
cause urban and small stream flooding. Between 1.2 and 3.5 inches
of rain have fallen.
- Additional rainfall amounts up to 0.2 inches are expected over
the area. This additional rain will result in minor flooding.
- Some locations that will experience flooding include...
Petaluma, San Rafael, Novato, Rohnert Park, Mill Valley, San
Anselmo, Larkspur, Corte Madera, Tiburon, Fairfax, Cotati,
Sausalito, San Geronimo, Lucas Valley-Marinwood, Point Reyes
Station, Black Point-Green Point, Kentfield, Stinson Beach, Muir
Beach and Tamalpais-Homestead.
- http://www.weather.gov/safety/flood
From: Jan 06, 2026 04:38
Until: Jan 06, 2026 07:00
Flood Advisory
* WHAT...Urban area and small stream flooding caused by excessive
rainfall is expected.
* WHERE...Urban areas along the I-280 and Highway 101 corridors from
South San Francisco to Palo Alto.
* Until 730 PM PST.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
Water over roadways. Ponding of water in urban or other areas is
occurring or is imminent.
* ADDITIONAL DETAILS...
- At 426 PM PST, local law enforcement reported heavy rain in the
advisory area. This is causing urban and small stream flooding.
Between 0.5 and 2 inches of rain have fallen.
- Additional rainfall amounts of 0.2 to 0.8 inches are expected
over the area. This additional rain will result in minor
flooding.
- Some locations that will experience flooding include...
San Francisco, Fremont, Daly City, San Mateo, Redwood City, Palo
Alto, South San Francisco, San Bruno, Pacifica, Menlo Park,
Foster City, Los Altos, Burlingame, San Carlos, East Palo Alto,
Belmont, Millbrae, Hillsborough, Los Altos Hills and Atherton.
- http://www.weather.gov/safety/flood
From: Jan 06, 2026 00:27
Until: Jan 06, 2026 03:30
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...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...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
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
Flood Advisory
* WHAT...Flooding caused by excessive rainfall continues.
* WHERE...Portions of central and northern California, including the
following counties, in central California, Placer. In northern
California, Amador, Calaveras, El Dorado, Nevada, Sacramento, San
Joaquin, Solano, Sutter and Yolo.
* WHEN...Until 300 PM PST.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
Water over roadways. Ponding of water in urban or other areas is
occurring or is imminent.
* ADDITIONAL DETAILS...
- At 1009 AM PST, Doppler radar indicated heavy rain.
Overflowing poor drainage areas will cause minor flooding in
the advisory area. Between 0.5 and 2 inches of rain have
fallen.
- Some locations that will experience flooding include...
Sacramento, Stockton, Elk Grove, Roseville, Citrus Heights,
Folsom, Davis, Rocklin, Woodland, Galt, Auburn, Placerville,
Jackson, Fair Oaks, Carmichael, El Dorado Hills, Cameron
Park, Paloma, Rancho Cordova and Lodi.
- http://www.weather.gov/safety/flood
From: Jan 04, 2026 18:10
Until: Jan 04, 2026 23:00
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 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 30, 2025 22:08
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...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 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
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...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...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 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
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
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
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 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 20 to 30 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 02, 2026 13:44
Until: Jan 02, 2026 22:00
