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WWUS86 KMTR 102045
SPSMTR

Special Weather Statement
National Weather Service San Francisco CA
145 PM PDT Wed Sep 10 2025

CAZ504-102115-
North Bay Interior Mountains CA-
145 PM PDT Wed Sep 10 2025

...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN NAPA COUNTY UNTIL
215 PM PDT...

At 145 PM PDT, Doppler radar was tracking a strong thunderstorm 17
miles north of St. Helena, or 27 miles northeast of Santa Rosa,
moving southeast at 5 mph.

HAZARD...Pea size hail.

SOURCE...Radar indicated.

IMPACT...Minor damage to outdoor objects is possible.

Locations impacted include...
  Mainly rural areas of Northwestern Napa County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the weather situation closely and be alert for threatening
weather conditions.

&&

LAT...LON 3869 12252 3871 12246 3877 12242 3877 12240
      3879 12241 3880 12240 3880 12238 3882 12237
      3883 12238 3886 12240 3886 12239 3885 12238
      3884 12235 3885 12232 3884 12231 3884 12229
      3878 12226 3875 12225 3872 12223 3863 12225
TIME...MOT...LOC 2044Z 294DEG 5KT 3875 12238

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...<30 MPH

$$

Flynn