898
FNUS86 KMTR 171208
FWLMTR
ECCDA DISCUSSIONS
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
508 AM PDT MON AUG 17 2026
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## DISCUSSIONS FROM THE LATEST FWF BELOW ##
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..DISCUSSION FROM SFOFWFMTR
THE MARINE LAYER HAS COMPRESSED TO 1500 FEET WITH FURTHER
COMPRESSION TO AROUND 1000 FEET EXPECTED AS RIDGING PUSHES FURTHER
INTO THE DESERT SOUTHWEST. OVERNIGHT HUMIDITY RECOVERIES WORSEN
ACROSS THE HIGHER ELEVATIONS THIS WEEK DUE TO MARINE LAYER
COMPRESSION WITH OVERNIGHT RECOVERIES PEAKING BETWEEN 20 TO
30 PERCENT. DAYTIME HUMIDITY RETENTION WORSENS AS WELL WITH WITH
DAYTIME RH VALUES ACROSS THE INTERIOR CENTRAL COAST DROPPING INTO
THE TEENS TO 20S AND INTO THE 20S TO 30S ACROSS THE INTERIOR BAY
AREA. CONDITIONS WILL BE BETTER FOR LOCATIONS WITHIN THE MARINE
LAYER WHERE OVERNIGHT RECOVERIES REMAIN EXCELLENT AND DAYTIME
HUMIDITY RETENTION REMAINS FAIR TO EXCELLENT. TEMPERATURES REMAIN
NEAR NORMAL THROUGH THE UPCOMING WEEK. DIURNALLY BREEZY ONSHORE
WINDS CONTINUE ACROSS FAVORED MOUNTAIN GAPS/PASSES, ALONG THE
COAST, AND ACROSS THE HIGHEST RIDGELINES.
..DISCUSSION FROM SFOFWFEKA
A DEEP MARINE LAYER CONTINUES TO PUSH MARINE AIR INLAND, THOUGH IT
IS NOT EXPECTED TO BE AS DEEP AS PREVIOUS DAYS. GENERALLY NEAR
NORMAL TEMPERATURES ARE EXPECTED THROUGH MID WEEK WITH 80S TO MID
90S FORECAST FOR MOST INTERIOR VALLEYS. AFTERNOON RELATIVE
HUMIDITIES ARE FORECAST TO BE IN THE HIGH TEENS TO THE 20S.
OVERNIGHT RECOVERIES ARE FORECAST TO BE GOOD TO EXCELLENT IN THE
LOWER ELEVATIONS AND MODERATE TO LOCALLY POOR IN THE HIGHER
ELEVATIONS. WINDS REMAIN RELATIVELY LIGHT AND TERRAIN DRIVEN, WITH
TYPICAL BREEZES IN THE AFTERNOONS. LATE IN THE WEEK ANOTHER TROUGH
IS EXPECTED TO BRING COOLER TEMPERATURES AND HIGHER RH. THERE IS A
LOW END POTENTIAL FOR A FEW THUNDERSTORMS FRIDAY IN THE INLAND
AREAS.
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## COMPLETE A DISCUSSION FOR EACH ECCDA SEGMENT BELOW ##
## WHEN DONE CLICK TRANSMIT, PRODUCT SENT AS KMTRFWLMTR ##
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ECC010-180015-
ST HELENA ECC DISPATCH-
DISCUSSION FOR MARIN AND SONOMA AND NAPA COUNTIES
508 AM PDT MON AUG 17 2026
THE MARINE LAYER HAS COMPRESSED TO 1500 FEET WITH FURTHER
COMPRESSION TO AROUND 1000 FEET EXPECTED AS RIDGING PUSHES FURTHER
INTO THE DESERT SOUTHWEST. OVERNIGHT HUMIDITY RECOVERIES WORSEN
ACROSS THE HIGHER ELEVATIONS THIS WEEK DUE TO MARINE LAYER
COMPRESSION WITH OVERNIGHT RECOVERIES PEAKING BETWEEN 20 TO
30 PERCENT. DAYTIME HUMIDITY RETENTION WORSENS AS WELL WITH WITH
DAYTIME RH VALUES ACROSS THE INTERIOR CENTRAL COAST DROPPING INTO
THE TEENS TO 20S AND INTO THE 20S TO 30S ACROSS THE INTERIOR BAY
AREA. CONDITIONS WILL BE BETTER FOR LOCATIONS WITHIN THE MARINE
LAYER WHERE OVERNIGHT RECOVERIES REMAIN EXCELLENT AND DAYTIME
HUMIDITY RETENTION REMAINS FAIR TO EXCELLENT. TEMPERATURES REMAIN
NEAR NORMAL THROUGH THE UPCOMING WEEK. DIURNALLY BREEZY ONSHORE
WINDS CONTINUE ACROSS FAVORED MOUNTAIN GAPS/PASSES, ALONG THE
COAST, AND ACROSS THE HIGHEST RIDGELINES.
ECC014-180015-
MORGAN HILL ECC DISPATCH-
DISCUSSION FOR ALAMEDA AND CONTRA COSTA AND SANTA CLARA COUNTIES
508 AM PDT MON AUG 17 2026
THE MARINE LAYER HAS COMPRESSED TO 1500 FEET WITH FURTHER
COMPRESSION TO AROUND 1000 FEET EXPECTED AS RIDGING PUSHES FURTHER
INTO THE DESERT SOUTHWEST. OVERNIGHT HUMIDITY RECOVERIES WORSEN
ACROSS THE HIGHER ELEVATIONS THIS WEEK DUE TO MARINE LAYER
COMPRESSION WITH OVERNIGHT RECOVERIES PEAKING BETWEEN 20 TO
30 PERCENT. DAYTIME HUMIDITY RETENTION WORSENS AS WELL WITH WITH
DAYTIME RH VALUES ACROSS THE INTERIOR CENTRAL COAST DROPPING INTO
THE TEENS TO 20S AND INTO THE 20S TO 30S ACROSS THE INTERIOR BAY
AREA. CONDITIONS WILL BE BETTER FOR LOCATIONS WITHIN THE MARINE
LAYER WHERE OVERNIGHT RECOVERIES REMAIN EXCELLENT AND DAYTIME
HUMIDITY RETENTION REMAINS FAIR TO EXCELLENT. TEMPERATURES REMAIN
NEAR NORMAL THROUGH THE UPCOMING WEEK. DIURNALLY BREEZY ONSHORE
WINDS CONTINUE ACROSS FAVORED MOUNTAIN GAPS/PASSES, ALONG THE
COAST, AND ACROSS THE HIGHEST RIDGELINES.
ECC013-180015-
FELTON ECC DISPATCH-
DISCUSSION FOR SANTA CRUZ AND SAN MATEO COUNTIES
508 AM PDT MON AUG 17 2026
THE MARINE LAYER HAS COMPRESSED TO 1500 FEET WITH FURTHER
COMPRESSION TO AROUND 1000 FEET EXPECTED AS RIDGING PUSHES FURTHER
INTO THE DESERT SOUTHWEST. OVERNIGHT HUMIDITY RECOVERIES WORSEN
ACROSS THE HIGHER ELEVATIONS THIS WEEK DUE TO MARINE LAYER
COMPRESSION WITH OVERNIGHT RECOVERIES PEAKING BETWEEN 20 TO
30 PERCENT. DAYTIME HUMIDITY RETENTION WORSENS AS WELL WITH WITH
DAYTIME RH VALUES ACROSS THE INTERIOR CENTRAL COAST DROPPING INTO
THE TEENS TO 20S AND INTO THE 20S TO 30S ACROSS THE INTERIOR BAY
AREA. CONDITIONS WILL BE BETTER FOR LOCATIONS WITHIN THE MARINE
LAYER WHERE OVERNIGHT RECOVERIES REMAIN EXCELLENT AND DAYTIME
HUMIDITY RETENTION REMAINS FAIR TO EXCELLENT. TEMPERATURES REMAIN
NEAR NORMAL THROUGH THE UPCOMING WEEK. DIURNALLY BREEZY ONSHORE
WINDS CONTINUE ACROSS FAVORED MOUNTAIN GAPS/PASSES, ALONG THE
COAST, AND ACROSS THE HIGHEST RIDGELINES.
ECC018-180015-
MONTEREY ECC DISPATCH-
DISCUSSION FOR MONTEREY AND SAN BENITO COUNTY
508 AM PDT MON AUG 17 2026
THE MARINE LAYER HAS COMPRESSED TO 1500 FEET WITH FURTHER
COMPRESSION TO AROUND 1000 FEET EXPECTED AS RIDGING PUSHES FURTHER
INTO THE DESERT SOUTHWEST. OVERNIGHT HUMIDITY RECOVERIES WORSEN
ACROSS THE HIGHER ELEVATIONS THIS WEEK DUE TO MARINE LAYER
COMPRESSION WITH OVERNIGHT RECOVERIES PEAKING BETWEEN 20 TO
30 PERCENT. DAYTIME HUMIDITY RETENTION WORSENS AS WELL WITH WITH
DAYTIME RH VALUES ACROSS THE INTERIOR CENTRAL COAST DROPPING INTO
THE TEENS TO 20S AND INTO THE 20S TO 30S ACROSS THE INTERIOR BAY
AREA. CONDITIONS WILL BE BETTER FOR LOCATIONS WITHIN THE MARINE
LAYER WHERE OVERNIGHT RECOVERIES REMAIN EXCELLENT AND DAYTIME
HUMIDITY RETENTION REMAINS FAIR TO EXCELLENT. TEMPERATURES REMAIN
NEAR NORMAL THROUGH THE UPCOMING WEEK. DIURNALLY BREEZY ONSHORE
WINDS CONTINUE ACROSS FAVORED MOUNTAIN GAPS/PASSES, ALONG THE
COAST, AND ACROSS THE HIGHEST RIDGELINES.
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