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Home Return to list Areal Flood Advisory 0084 Issued by the San Francisco Bay Area / Monterey Forecast Office
Action: New Issued At: 2025-12-22 10:37:47
748
WGUS86 KMTR 221637
FLSMTR
Flood Advisory
National Weather Service San Francisco CA
837 AM PST Mon Dec 22 2025
CAC001-013-221930-
/O.NEW.KMTR.FA.Y.0084.251222T1637Z-251222T1930Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Alameda CA-Contra Costa CA-
837 AM PST Mon Dec 22 2025
...FLOOD ADVISORY IN EFFECT UNTIL 1130 AM PST THIS MORNING...
* WHAT...Urban area and small stream flooding caused by excessive
rainfall is expected.
* WHERE...Western Alameda County in northern California...
Western Contra Costa County in northern California...
* Until 1130 AM PST.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
Water over roadways. Overflowing poor drainage areas.
* ADDITIONAL DETAILS...
- At 837 AM PST, Doppler radar indicated moderate to heavy rain at
times. This will cause urban and small stream flooding.
Overflowing poor drainage areas will cause minor flooding in the
advisory area.
- Some locations that will experience flooding include...
Oakland, Fremont, Hayward, Concord, Berkeley, Richmond, San
Leandro, Livermore, Mountain View, Alameda, San Ramon,
Pleasanton, Union City, Walnut Creek, Dublin, Newark, Danville,
Martinez, Pleasant Hill and San Pablo.
- http://www.weather.gov/safety/flood
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, dont drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 3796 12243 3804 12205 3774 12189 3770 12176
3764 12174 3748 12186 3747 12205 3748 12202
3750 12211 3767 12216 3774 12226 3775 12225
3775 12221 3776 12222 3776 12221 3780 12233
3789 12231
$$
JM
Action: Continued Issued At: 2025-12-22 11:32:48
174
WGUS86 KMTR 221732
FLSMTR
Flood Advisory
National Weather Service San Francisco CA
932 AM PST Mon Dec 22 2025
CAC001-013-221930-
/O.CON.KMTR.FA.Y.0084.000000T0000Z-251222T1930Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Alameda CA-Contra Costa CA-
932 AM PST Mon Dec 22 2025
...FLOOD ADVISORY REMAINS IN EFFECT UNTIL 1130 AM PST THIS MORNING...
* WHAT...Urban area and small stream flooding caused by excessive
rainfall continues.
* WHERE...Northwestern Alameda County in northern California...
Western Contra Costa County in northern California...
* Until 1130 AM PST.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
Water over roadways. Overflowing poor drainage areas.
* ADDITIONAL DETAILS...
- At 932 AM PST, Doppler radar indicated moderate to heavy rain at
times. This will cause urban and small stream flooding.
Overflowing poor drainage areas will cause minor flooding in the
advisory area.
- Some locations that will experience flooding include...
Oakland, Hayward, Concord, Berkeley, Richmond, San Leandro,
Mountain View, Alameda, San Ramon, Pleasanton, Union City, Walnut
Creek, Dublin, Danville, Martinez, Pleasant Hill, San Pablo,
Lafayette, El Cerrito and Castro Valley.
- http://www.weather.gov/safety/flood
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, dont drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 3790 12232 3796 12243 3795 12240 3797 12239
3804 12205 3774 12188 3758 12213 3767 12216
3771 12219 3775 12225 3773 12221 3776 12221
3780 12233 3783 12230 3789 12231
$$
JM
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