FNUS86 KMTR 192121
FWLMTR

ECCDA Discussions
National Weather Service SAN FRANCISCO BAY AREA
221 PM PDT Tue May 19 2026

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...Discussion from SFOFWFMTR...

...ELEVATED FIRE WEATHER CONCERNS ACROSS THE INTERIOR BAY AREA AND
CENTRAL COAST THROUGH THURSDAY DUE TO CRITICALLY LOW HUMIDITIES...

Light offshore winds continue across the higher terrain and portions
of the interior through midweek. Critically dry conditions continue
across the interior and higher elevations through midweek with
humidity values in the 10s to 20s. Overnight recoveries remain poor
to fair through Thursday night. A shallow marine layer is expected
to develop late week into the weekend which will bring improved
daytime and overnight humidity values. Fire weather concerns will
remain elevated through late week but will ease as humidity
conditions improve.


...Discussion from SFOFWFEKA...

A gradual warming trend is expected through Thursday.  Typical
afternoon breezes are expected each day with a few gusts 
approacching 25 mph closer to the coast. High pressure will weaken
through the weekend, allowing for cooler daytime highs.  


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##       Complete a discussion for each ECCDA segment below        ##
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ECC010-200930-
St Helena ECC Dispatch-
DISCUSSION FOR Marin and Sonoma and Napa Counties
221 PM PDT Tue May 19 2026

Light offshore winds continue across the higher terrain and portions
of the interior through midweek. Critically dry conditions continue
across the interior and higher elevations through midweek with
humidity values in the 10s to 20s. Overnight recoveries remain poor
to fair through Thursday night. A shallow marine layer is expected
to develop late week into the weekend which will bring improved
daytime and overnight humidity values. Fire weather concerns will
remain elevated through late week but will ease as humidity
conditions improve.

$$

ECC014-200930-
Morgan Hill ECC Dispatch-
DISCUSSION FOR Alameda and Contra Costa and Santa Clara Counties
221 PM PDT Tue May 19 2026

Light offshore winds continue across the higher terrain and portions
of the interior through midweek. Critically dry conditions continue
across the interior and higher elevations through midweek with
humidity values in the 10s to 20s. Overnight recoveries remain poor
to fair through Thursday night. A shallow marine layer is expected
to develop late week into the weekend which will bring improved
daytime and overnight humidity values. Fire weather concerns will
remain elevated through late week but will ease as humidity
conditions improve.

$$

ECC013-200930-
Felton ECC Dispatch-
DISCUSSION FOR Santa Cruz and San Mateo Counties
221 PM PDT Tue May 19 2026

Light offshore winds continue across the higher terrain and portions
of the interior through midweek. Critically dry conditions continue
across the interior and higher elevations through midweek with
humidity values in the 10s to 20s. Overnight recoveries remain poor
to fair through Thursday night. A shallow marine layer is expected
to develop late week into the weekend which will bring improved
daytime and overnight humidity values. Fire weather concerns will
remain elevated through late week but will ease as humidity
conditions improve.

$$

ECC018-200930-
Monterey ECC Dispatch-
DISCUSSION FOR Monterey and San Benito County
221 PM PDT Tue May 19 2026

Light offshore winds continue across the higher terrain and portions
of the interior through midweek. Critically dry conditions continue
across the interior and higher elevations through midweek with
humidity values in the 10s to 20s. Overnight recoveries remain poor
to fair through Thursday night. A shallow marine layer is expected
to develop late week into the weekend which will bring improved
daytime and overnight humidity values. Fire weather concerns will
remain elevated through late week but will ease as humidity
conditions improve.

$$