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Home Return to list Areal Flood Advisory 0090 Issued by the San Francisco Bay Area / Monterey Forecast Office
Action: New Issued At: 2025-12-25 04:48:36
156
WGUS86 KMTR 251048
FLSMTR
Flood Advisory
National Weather Service San Francisco CA
248 AM PST Thu Dec 25 2025
CAC001-013-085-251345-
/O.NEW.KMTR.FA.Y.0090.251225T1048Z-251225T1345Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Alameda CA-Contra Costa CA-Santa Clara CA-
248 AM PST Thu Dec 25 2025
...FLOOD ADVISORY IN EFFECT UNTIL 545 AM PST EARLY THIS MORNING...
* 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
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, dont drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 3796 12243 3805 12197 3748 12174 3740 12197
3746 12205 3747 12196 3750 12211 3767 12216
3775 12225 3773 12221 3775 12221 3776 12222
3776 12221 3780 12233 3783 12230 3789 12231
3792 12238 3791 12238
$$
KR
Action: Time Extended Issued At: 2025-12-25 07:34:40
583
WGUS86 KMTR 251334
FLSMTR
Flood Advisory
National Weather Service San Francisco CA
534 AM PST Thu Dec 25 2025
CAC001-013-085-251545-
/O.EXT.KMTR.FA.Y.0090.000000T0000Z-251225T1545Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Alameda CA-Contra Costa CA-Santa Clara CA-
534 AM PST Thu Dec 25 2025
...FLOOD ADVISORY NOW IN EFFECT UNTIL 745 AM PST THIS MORNING...
* WHAT...Flooding caused by excessive rainfall continues.
* WHERE...Western Alameda County in northern California...
Central Contra Costa County in northern California...
North Central Santa Clara County in northern California...
* Until 745 AM PST.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
Water over roadways. Overflowing poor drainage areas.
* ADDITIONAL DETAILS...
- At 534 AM PST, Local law enforcement reported flooding in the
area. Minor flooding is ongoing or expected to begin shortly.
Between 0.2 and 1.7 inches of rain have fallen.
- Some locations that will experience flooding include...
San Jose, Oakland, Fremont, Hayward, Sunnyvale, Concord, Santa
Clara, Berkeley, Richmond, San Leandro, Livermore, Mountain View,
Alameda, San Ramon, Pleasanton, Union City, Milpitas, Walnut
Creek, Pittsburg and Dublin.
- http://www.weather.gov/safety/flood
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, dont drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Be aware of your surroundings and do not drive on flooded roads.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 3796 12243 3805 12197 3748 12174 3740 12197
3746 12205 3747 12196 3750 12211 3767 12216
3775 12225 3773 12221 3775 12221 3776 12222
3776 12221 3780 12233 3783 12230 3789 12231
3792 12238 3791 12238
$$
KR
Action: Expired Issued At: 2025-12-25 09:41:43
736
WGUS86 KMTR 251541
FLSMTR
Flood Advisory
National Weather Service San Francisco CA
741 AM PST Thu Dec 25 2025
CAC001-013-085-251551-
/O.EXP.KMTR.FA.Y.0090.000000T0000Z-251225T1545Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Alameda CA-Contra Costa CA-Santa Clara CA-
741 AM PST Thu Dec 25 2025
...FLOOD ADVISORY WILL EXPIRE AT 745 AM PST THIS MORNING...
The Flood Advisory will expire at 745 AM PST this morning for a
portion of northern California, including the following areas,
Alameda, Contra Costa and Santa Clara.
The heavy rain has ended. Please continue to heed remaining road
closures.
A Flood Watch remains in effect until 1000 PM PST Friday for portions
of central and northern California...
&&
LAT...LON 3796 12243 3805 12197 3748 12174 3740 12197
3746 12205 3747 12196 3750 12211 3767 12216
3775 12225 3773 12221 3775 12221 3776 12222
3776 12221 3780 12233 3783 12230 3789 12231
3792 12238 3791 12238
$$
Sarment
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