871
FNUS86 KMTR 232259
FWLMTR
ECCDA DISCUSSIONS
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
359 PM PDT WED SEP 23 2026
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## DISCUSSIONS FROM THE LATEST FWF BELOW ##
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..DISCUSSION FROM SFOFWFMTR
THE MARINE LAYER CONTINUES TO COMPRESS TONIGHT WITH ANOTHER ROUND OF
POOR RECOVERIES ACROSS THE HIGHER ELEVATIONS IN THE EAST/SOUTH BAY
AND CENTRAL COAST, SIMILAR TO WHAT WAS OBSERVED WEDNESDAY MORNING.
THURSDAY NIGHT INTO EARLY FRIDAY MORNING, A DRY COLD FRONTAL
PASSAGE WILL ALLOW THE MARINE LAYER TO DEEPEN, ALLOWING FOR COOLER
CONDITIONS AND AN INCREASED PUSH OF ONSHORE WINDS. DESPITE THIS,
THE SANTA LUCIA RANGE AND PORTIONS OF THE SOUTHERN EXTENT OF THE
DIABLO RANGE WILL CONTINUE TO EXPERIENCE POOR TO MODERATE HUMIDITY
RECOVERIES THROUGH THE WEEKEND. THERE WILL ALSO BE A WEAK PUSH OF
OFFSHORE FLOW OVER THE WEEKEND, ESPECIALLY ACROSS THE NORTH AND
EAST BAY HIGHER TERRAIN. BY MONDAY, THE COLD FRONT WILL BE WELL TO
OUR EAST, RESULTING IN BUILDING HIGH PRESSURE OVER THE BAY AREA AND
CENTRAL COAST. THIS OPENS THE DOOR FOR WARMER CONDITIONS AND
WIDESPREAD LOCALLY POOR TO MODERATE HUMIDITIES ACROSS THE HIGHER
TERRAINS.
..DISCUSSION FROM SFOFWFEKA
A WEAK LOW PRESSURE SYSTEM ARRIVING LATE THURSDAY INTO FRIDAY WILL
BRING COOLER TEMPERATURES ALONG WITH LIGHT RAIN ACROSS DEL NORTE
AND NORTHERN HUMBOLDT COUNTIES, WHILE AREAS TO THE SOUTH REMAIN
MOSTLY DRY. WETTING RAIN IS LIKELY IN MUCH OF DEL NORTE AND POSSIBLE
(AROUND 30% CHANCES) IN NORTHERN HUMBOLDT. BREEZY WEST WINDS ARE
LIKELY BEHIND THE FRONTAL PASSAGE FRIDAY MORNING AND AFTERNOON,
WHICH MAY BRING ELEVATED FIRE WEATHER CONDITIONS IN LAKE AND
EASTERN MENDOCINO COUNTIES FRIDAY AFTERNOON, THOUGH RH WILL BE
QUICKLY INCREASING OVERNIGHT WITH GOOD RECOVERIES.
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## COMPLETE A DISCUSSION FOR EACH ECCDA SEGMENT BELOW ##
## WHEN DONE CLICK TRANSMIT, PRODUCT SENT AS KMTRFWLMTR ##
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ECC010-241100-
ST HELENA ECC DISPATCH-
DISCUSSION FOR MARIN AND SONOMA AND NAPA COUNTIES
359 PM PDT WED SEP 23 2026
THE MARINE LAYER CONTINUES TO COMPRESS TONIGHT WITH ANOTHER ROUND OF
POOR RECOVERIES ACROSS THE HIGHER ELEVATIONS IN THE EAST/SOUTH BAY
AND CENTRAL COAST, SIMILAR TO WHAT WAS OBSERVED WEDNESDAY MORNING.
THURSDAY NIGHT INTO EARLY FRIDAY MORNING, A DRY COLD FRONTAL
PASSAGE WILL ALLOW THE MARINE LAYER TO DEEPEN, ALLOWING FOR COOLER
CONDITIONS AND AN INCREASED PUSH OF ONSHORE WINDS. DESPITE THIS,
THE SANTA LUCIA RANGE AND PORTIONS OF THE SOUTHERN EXTENT OF THE
DIABLO RANGE WILL CONTINUE TO EXPERIENCE POOR TO MODERATE HUMIDITY
RECOVERIES THROUGH THE WEEKEND. THERE WILL ALSO BE A WEAK PUSH OF
OFFSHORE FLOW OVER THE WEEKEND, ESPECIALLY ACROSS THE NORTH AND
EAST BAY HIGHER TERRAIN. BY MONDAY, THE COLD FRONT WILL BE WELL TO
OUR EAST, RESULTING IN BUILDING HIGH PRESSURE OVER THE BAY AREA AND
CENTRAL COAST. THIS OPENS THE DOOR FOR WARMER CONDITIONS AND
WIDESPREAD LOCALLY POOR TO MODERATE HUMIDITIES ACROSS THE HIGHER
TERRAINS.
ECC014-241100-
MORGAN HILL ECC DISPATCH-
DISCUSSION FOR ALAMEDA AND CONTRA COSTA AND SANTA CLARA COUNTIES
359 PM PDT WED SEP 23 2026
THE MARINE LAYER CONTINUES TO COMPRESS TONIGHT WITH ANOTHER ROUND OF
POOR RECOVERIES ACROSS THE HIGHER ELEVATIONS IN THE EAST/SOUTH BAY
AND CENTRAL COAST, SIMILAR TO WHAT WAS OBSERVED WEDNESDAY MORNING.
THURSDAY NIGHT INTO EARLY FRIDAY MORNING, A DRY COLD FRONTAL
PASSAGE WILL ALLOW THE MARINE LAYER TO DEEPEN, ALLOWING FOR COOLER
CONDITIONS AND AN INCREASED PUSH OF ONSHORE WINDS. DESPITE THIS,
THE SANTA LUCIA RANGE AND PORTIONS OF THE SOUTHERN EXTENT OF THE
DIABLO RANGE WILL CONTINUE TO EXPERIENCE POOR TO MODERATE HUMIDITY
RECOVERIES THROUGH THE WEEKEND. THERE WILL ALSO BE A WEAK PUSH OF
OFFSHORE FLOW OVER THE WEEKEND, ESPECIALLY ACROSS THE NORTH AND
EAST BAY HIGHER TERRAIN. BY MONDAY, THE COLD FRONT WILL BE WELL TO
OUR EAST, RESULTING IN BUILDING HIGH PRESSURE OVER THE BAY AREA AND
CENTRAL COAST. THIS OPENS THE DOOR FOR WARMER CONDITIONS AND
WIDESPREAD LOCALLY POOR TO MODERATE HUMIDITIES ACROSS THE HIGHER
TERRAINS.
ECC013-241100-
FELTON ECC DISPATCH-
DISCUSSION FOR SANTA CRUZ AND SAN MATEO COUNTIES
359 PM PDT WED SEP 23 2026
THE MARINE LAYER CONTINUES TO COMPRESS TONIGHT WITH ANOTHER ROUND OF
POOR RECOVERIES ACROSS THE HIGHER ELEVATIONS IN THE EAST/SOUTH BAY
AND CENTRAL COAST, SIMILAR TO WHAT WAS OBSERVED WEDNESDAY MORNING.
THURSDAY NIGHT INTO EARLY FRIDAY MORNING, A DRY COLD FRONTAL
PASSAGE WILL ALLOW THE MARINE LAYER TO DEEPEN, ALLOWING FOR COOLER
CONDITIONS AND AN INCREASED PUSH OF ONSHORE WINDS. DESPITE THIS,
THE SANTA LUCIA RANGE AND PORTIONS OF THE SOUTHERN EXTENT OF THE
DIABLO RANGE WILL CONTINUE TO EXPERIENCE POOR TO MODERATE HUMIDITY
RECOVERIES THROUGH THE WEEKEND. THERE WILL ALSO BE A WEAK PUSH OF
OFFSHORE FLOW OVER THE WEEKEND, ESPECIALLY ACROSS THE NORTH AND
EAST BAY HIGHER TERRAIN. BY MONDAY, THE COLD FRONT WILL BE WELL TO
OUR EAST, RESULTING IN BUILDING HIGH PRESSURE OVER THE BAY AREA AND
CENTRAL COAST. THIS OPENS THE DOOR FOR WARMER CONDITIONS AND
WIDESPREAD LOCALLY POOR TO MODERATE HUMIDITIES ACROSS THE HIGHER
TERRAINS.
ECC018-241100-
MONTEREY ECC DISPATCH-
DISCUSSION FOR MONTEREY AND SAN BENITO COUNTY
359 PM PDT WED SEP 23 2026
THE MARINE LAYER CONTINUES TO COMPRESS TONIGHT WITH ANOTHER ROUND OF
POOR RECOVERIES ACROSS THE HIGHER ELEVATIONS IN THE EAST/SOUTH BAY
AND CENTRAL COAST, SIMILAR TO WHAT WAS OBSERVED WEDNESDAY MORNING.
THURSDAY NIGHT INTO EARLY FRIDAY MORNING, A DRY COLD FRONTAL
PASSAGE WILL ALLOW THE MARINE LAYER TO DEEPEN, ALLOWING FOR COOLER
CONDITIONS AND AN INCREASED PUSH OF ONSHORE WINDS. DESPITE THIS,
THE SANTA LUCIA RANGE AND PORTIONS OF THE SOUTHERN EXTENT OF THE
DIABLO RANGE WILL CONTINUE TO EXPERIENCE POOR TO MODERATE HUMIDITY
RECOVERIES THROUGH THE WEEKEND. THERE WILL ALSO BE A WEAK PUSH OF
OFFSHORE FLOW OVER THE WEEKEND, ESPECIALLY ACROSS THE NORTH AND
EAST BAY HIGHER TERRAIN. BY MONDAY, THE COLD FRONT WILL BE WELL TO
OUR EAST, RESULTING IN BUILDING HIGH PRESSURE OVER THE BAY AREA AND
CENTRAL COAST. THIS OPENS THE DOOR FOR WARMER CONDITIONS AND
WIDESPREAD LOCALLY POOR TO MODERATE HUMIDITIES ACROSS THE HIGHER
TERRAINS.
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