253
FNUS86 KMTR 191208
FWLMTR
ECCDA DISCUSSIONS
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
508 AM PDT WED AUG 19 2026
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## DISCUSSIONS FROM THE LATEST FWF BELOW ##
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..DISCUSSION FROM SFOFWFMTR
THE MARINE LAYER HAS COMPRESSED TO AROUND 1000 FEET WITH HUMIDITY
VALUES RUNNING AROUND 20 TO 30% DRIER THIS MORNING ACROSS THE HIGHER
ELEVATIONS COMPARED TO YESTERDAY. POOR OVERNIGHT RECOVERIES
(20-30%) CONTINUE ABOVE THE MARINE LAYER WITH POOR DAYTIME HUMIDITY
RETENTION (10-30%) ACROSS THE INTERIOR. BREEZY ONSHORE WINDS AND A
DEEPENING MARINE LAYER ARE EXPECTED BY LATE WEEK AS TROUGHING
RETURNS ALONG THE COAST. LOW POTENTIAL FOR ISOLATED SHOWERS LATE
WEEK DUE TO THE ARRIVAL OF SUB-TROPICAL MOISTURE. NO THUNDERSTORMS
ARE EXPECTED AT THIS TIME.
..DISCUSSION FROM SFOFWFEKA
GENERALLY NEAR NORMAL TEMPERATURES ARE EXPECTED THROUGH MID WEEK
WITH HIGH TEMPERATURES IN THE LOW 90S FOR INTERIOR VALLEYS AND
MINIMUM RH AS LOW AS 20 PERCENT. WINDS ARE GENERALLY GENTLE AND
TERRAIN DRIVEN. WHILE LOW ELEVATION HUMIDITY RECOVERIES REMAIN GOOD,
THERMAL BELTS WILL PEAK TUESDAY NIGHT INTO WEDNESDAY WITH POOR RH
RECOVERY ON MID AND UPPER SLOPES. MARINE INFLUENCE WILL GENERALLY
INCREASE LATE IN THE WEEK, INCREASING HUMIDITY AND SOME AFTERNOON
MIXING THROUGH FRIDAY. THERE IS A VERY SLIGHT (5%) CHANCE OF
ISOLATED DRY THUNDERSTORMS EARLY FRIDAY MORNING AND THROUGH THE DAY
FOCUSED IN TRINITY AND NORTHERN HUMBOLDT COUNTIES.
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## COMPLETE A DISCUSSION FOR EACH ECCDA SEGMENT BELOW ##
## WHEN DONE CLICK TRANSMIT, PRODUCT SENT AS KMTRFWLMTR ##
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ECC010-200015-
ST HELENA ECC DISPATCH-
DISCUSSION FOR MARIN AND SONOMA AND NAPA COUNTIES
508 AM PDT WED AUG 19 2026
THE MARINE LAYER HAS COMPRESSED TO AROUND 1000 FEET WITH HUMIDITY
VALUES RUNNING AROUND 20 TO 30% DRIER THIS MORNING ACROSS THE HIGHER
ELEVATIONS COMPARED TO YESTERDAY. POOR OVERNIGHT RECOVERIES
(20-30%) CONTINUE ABOVE THE MARINE LAYER WITH POOR DAYTIME HUMIDITY
RETENTION (10-30%) ACROSS THE INTERIOR. BREEZY ONSHORE WINDS AND A
DEEPENING MARINE LAYER ARE EXPECTED BY LATE WEEK AS TROUGHING
RETURNS ALONG THE COAST. LOW POTENTIAL FOR ISOLATED SHOWERS LATE
WEEK DUE TO THE ARRIVAL OF SUB-TROPICAL MOISTURE. NO THUNDERSTORMS
ARE EXPECTED AT THIS TIME.
ECC014-200015-
MORGAN HILL ECC DISPATCH-
DISCUSSION FOR ALAMEDA AND CONTRA COSTA AND SANTA CLARA COUNTIES
508 AM PDT WED AUG 19 2026
THE MARINE LAYER HAS COMPRESSED TO AROUND 1000 FEET WITH HUMIDITY
VALUES RUNNING AROUND 20 TO 30% DRIER THIS MORNING ACROSS THE HIGHER
ELEVATIONS COMPARED TO YESTERDAY. POOR OVERNIGHT RECOVERIES
(20-30%) CONTINUE ABOVE THE MARINE LAYER WITH POOR DAYTIME HUMIDITY
RETENTION (10-30%) ACROSS THE INTERIOR. BREEZY ONSHORE WINDS AND A
DEEPENING MARINE LAYER ARE EXPECTED BY LATE WEEK AS TROUGHING
RETURNS ALONG THE COAST. LOW POTENTIAL FOR ISOLATED SHOWERS LATE
WEEK DUE TO THE ARRIVAL OF SUB-TROPICAL MOISTURE. NO THUNDERSTORMS
ARE EXPECTED AT THIS TIME.
ECC013-200015-
FELTON ECC DISPATCH-
DISCUSSION FOR SANTA CRUZ AND SAN MATEO COUNTIES
508 AM PDT WED AUG 19 2026
THE MARINE LAYER HAS COMPRESSED TO AROUND 1000 FEET WITH HUMIDITY
VALUES RUNNING AROUND 20 TO 30% DRIER THIS MORNING ACROSS THE HIGHER
ELEVATIONS COMPARED TO YESTERDAY. POOR OVERNIGHT RECOVERIES
(20-30%) CONTINUE ABOVE THE MARINE LAYER WITH POOR DAYTIME HUMIDITY
RETENTION (10-30%) ACROSS THE INTERIOR. BREEZY ONSHORE WINDS AND A
DEEPENING MARINE LAYER ARE EXPECTED BY LATE WEEK AS TROUGHING
RETURNS ALONG THE COAST. LOW POTENTIAL FOR ISOLATED SHOWERS LATE
WEEK DUE TO THE ARRIVAL OF SUB-TROPICAL MOISTURE. NO THUNDERSTORMS
ARE EXPECTED AT THIS TIME.
ECC018-200015-
MONTEREY ECC DISPATCH-
DISCUSSION FOR MONTEREY AND SAN BENITO COUNTY
508 AM PDT WED AUG 19 2026
THE MARINE LAYER HAS COMPRESSED TO AROUND 1000 FEET WITH HUMIDITY
VALUES RUNNING AROUND 20 TO 30% DRIER THIS MORNING ACROSS THE HIGHER
ELEVATIONS COMPARED TO YESTERDAY. POOR OVERNIGHT RECOVERIES
(20-30%) CONTINUE ABOVE THE MARINE LAYER WITH POOR DAYTIME HUMIDITY
RETENTION (10-30%) ACROSS THE INTERIOR. BREEZY ONSHORE WINDS AND A
DEEPENING MARINE LAYER ARE EXPECTED BY LATE WEEK AS TROUGHING
RETURNS ALONG THE COAST. LOW POTENTIAL FOR ISOLATED SHOWERS LATE
WEEK DUE TO THE ARRIVAL OF SUB-TROPICAL MOISTURE. NO THUNDERSTORMS
ARE EXPECTED AT THIS TIME.
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