Land Management Forecasts
Issued by NWS San Francisco Bay Area, CA

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233
FNUS86 KMTR 022231
FWLMTR

ECCDA Discussions
National Weather Service SAN FRANCISCO BAY AREA
331 PM PDT Tue Sep 2 2025

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##            Discussions from the latest FWF below                ##
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...Discussion from SFOFWFMTR...

There remains a slight (15%) chance for isolated dry thunderstorms
across far interior portions of the district through sunset. This
poses the risk for lightning and gusty and erratic  winds with very
little rain, if any, to accompany it. Good to  excellent relative
humidity recovery is expected tonight for all  but the highest
terrain of the Central Coast. The cooling and  moistening trend will
continue through the week with the help of a deepening marine layer
that will bring much needed relief.


...Discussion from SFOFWFEKA...

Temperatures climbing rapidly to above normal  across the interior
as the surge of moisture continues to move  northward and the sky
clear out from south to north. With  increasing instability this
afternoon, there remain slight chance  (15%) of isolated dry
thunderstorms in the interior through this  evening, primarily for
Trinity County. Diurnal, terrain driven  winds forecasted with
breezy afternoon winds outside of any gusty  winds from
thunderstorms. Gusty and erratic outflow winds of 40 to 60 mph are
possible with any storms that do form. Wednesday  through the end of
the week gradual cooling is expected with highs mainly in the 80s by
Saturday. Thursday and Friday, an approaching upper level low/trough
will bring a slight chance (10-20%) of  showers for the northern
portion of the forecast area, especially  for Del Norte County.


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##       Complete a discussion for each ECCDA segment below        ##
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ECC010-031045-
St Helena ECC Dispatch-
DISCUSSION FOR Marin and Sonoma and Napa Counties
331 PM PDT Tue Sep 2 2025

There remains a slight (15%) chance for isolated dry thunderstorms
across far interior portions of the district through sunset. This
poses the risk for lightning and gusty and erratic  winds with very
little rain, if any, to accompany it. Good to  excellent relative
humidity recovery is expected tonight for all  but the highest
terrain of the Central Coast. The cooling and  moistening trend will
continue through the week with the help of a deepening marine layer
that will bring much needed relief.

$$

ECC014-031045-
Morgan Hill ECC Dispatch-
DISCUSSION FOR Alameda and Contra Costa and Santa Clara Counties
331 PM PDT Tue Sep 2 2025

There remains a slight (15%) chance for isolated dry thunderstorms
across far interior portions of the district through sunset. This
poses the risk for lightning and gusty and erratic  winds with very
little rain, if any, to accompany it. Good to  excellent relative
humidity recovery is expected tonight for all  but the highest
terrain of the Central Coast. The cooling and  moistening trend will
continue through the week with the help of a deepening marine layer
that will bring much needed relief.

$$

ECC013-031045-
Felton ECC Dispatch-
DISCUSSION FOR Santa Cruz and San Mateo Counties
331 PM PDT Tue Sep 2 2025

There remains a slight (15%) chance for isolated dry thunderstorms
across far interior portions of the district through sunset. This
poses the risk for lightning and gusty and erratic  winds with very
little rain, if any, to accompany it. Good to  excellent relative
humidity recovery is expected tonight for all  but the highest
terrain of the Central Coast. The cooling and  moistening trend will
continue through the week with the help of a deepening marine layer
that will bring much needed relief.

$$

ECC018-031045-
Monterey ECC Dispatch-
DISCUSSION FOR Monterey and San Benito County
331 PM PDT Tue Sep 2 2025

There remains a slight (15%) chance for isolated dry thunderstorms
across far interior portions of the district through sunset. This
poses the risk for lightning and gusty and erratic  winds with very
little rain, if any, to accompany it. Good to  excellent relative
humidity recovery is expected tonight for all  but the highest
terrain of the Central Coast. The cooling and  moistening trend will
continue through the week with the help of a deepening marine layer
that will bring much needed relief.

$$