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Home Return to list Areal Flood Advisory 0044 Issued by the San Francisco Bay Area / Monterey Forecast Office
Action: New Issued At: 2025-09-10 16:37:59
495
WGUS86 KMTR 102137
FLSMTR
Flood Advisory
National Weather Service San Francisco CA
237 PM PDT Wed Sep 10 2025
CAC055-110030-
/O.NEW.KMTR.FA.Y.0044.250910T2137Z-250911T0030Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Napa CA-
237 PM PDT Wed Sep 10 2025
...FLOOD ADVISORY IN EFFECT UNTIL 530 PM PDT THIS AFTERNOON...
* WHAT...Flooding caused by excessive rainfall is expected.
* WHERE...A portion of northern California, including the following
county, NE Napa.
* WHEN...Until 530 PM PDT.
* IMPACTS...Minor flooding in low-lying and poor drainage areas.
* ADDITIONAL DETAILS...
- At 236 PM PDT, 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...
Mainly rural areas of North Central Napa County.
- http://www.weather.gov/safety/flood
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, dont drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3869 12220 3869 12234 3872 12245 3877 12242
3877 12240 3879 12241 3880 12240 3880 12238
3882 12237 3886 12240 3886 12239 3885 12238
3884 12235 3885 12232 3884 12231 3884 12229
3878 12226 3875 12225 3873 12223 3870 12222
$$
Flynn
Action: Expired Issued At: 2025-09-10 19:25:35
783
WGUS86 KMTR 110025
FLSMTR
Flood Advisory
National Weather Service San Francisco CA
525 PM PDT Wed Sep 10 2025
CAC055-110035-
/O.EXP.KMTR.FA.Y.0044.000000T0000Z-250911T0030Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Napa CA-
525 PM PDT Wed Sep 10 2025
...FLOOD ADVISORY WILL EXPIRE AT 530 PM PDT THIS AFTERNOON...
The Flood Advisory will expire at 530 PM PDT this afternoon for a
portion of northern California, including the following area, Napa.
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
&&
LAT...LON 3869 12220 3869 12234 3872 12245 3877 12242
3877 12240 3879 12241 3880 12240 3880 12238
3882 12237 3886 12240 3886 12239 3885 12238
3884 12235 3885 12232 3884 12231 3884 12229
3878 12226 3875 12225 3873 12223 3870 12222
$$
Flynn
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