135  
FNUS86 KMTR 220928  
FWLMTR  
 
ECCDA DISCUSSIONS  
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA  
228 AM PDT THU MAY 22 2025  
 
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## DISCUSSIONS FROM THE LATEST FWF BELOW ##  
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..DISCUSSION FROM SFOFWFMTR
 
 
ELEVATED FIRE WEATHER CONDITIONS CONTINUE TODAY ACROSS THE CURED  
GRASSES OF THE INTERIOR BAY AREA AND CENTRAL COAST. POOR OVERNIGHT  
RELATIVE HUMIDITY RECOVERY IS UNDERWAY WITH VALUES OF 15-25% ABOVE  
1,500 FEET. WIDESPREAD MINIMUM DAYTIME RELATIVE HUMIDITY OF 20-40%  
IS EXPECTED AWAY FROM THE IMMEDIATE COAST WITH LOCALLY LOWER VALUES  
DOWN TO 10% ACROSS AREAS OF THE INTERIOR CENTRAL COAST. MODERATE TO  
STRONG ONSHORE WINDS WITH GUSTS OF 25-35 MPH ARE EXPECTED THIS  
AFTERNOON ALONG THE COAST, THROUGH NORTHWEST/SOUTHEAST ORIENTED  
TERRAIN, AND ACROSS RIDGELINES. CONDITIONS IMPROVE TONIGHT AS A  
MODEST MARINE LAYER, AND THUS COOLER AND MOISTER CONDITIONS RETURN  
WITH EXCELLENT RELATIVE HUMIDITY (70%+) EXPECTED IN ALL BUT THE  
HIGHEST TERRAIN OF THE CENTRAL COAST.  
 
   
..DISCUSSION FROM SFOFWFEKA
 
 
COOLER TEMPERATURES AND MOIST ONSHORE FLOW EXPECTED FOR THE  
REMAINDER OF THIS WEEK. AREAS OF LAKE COUNTY WILL BE GUSTY AGAIN  
THURSDAY AFTERNOON WITH MIN RHS 30 TO 40%. WARMER TEMPERATURES IN  
THE 70'S AND LOW 80'S EXPECTED THIS WEEKEND. MIN RH'S WILL STILL BE  
LESS THAN 50% FOR EASTERN MENDOCINO, LAKE AND TRINITY COUNTIES WITH  
GOOD OVERNIGHT RECOVERIES. POTENTIAL FOR LIGHT RAINFALL IN NORTHERN  
HUMBOLDT AND DEL NORTE COUNTIES LATE SUNDAY INTO MONDAY.  
 
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ECC010-222130-  
ST HELENA ECC DISPATCH-  
DISCUSSION FOR MARIN AND SONOMA AND NAPA COUNTIES  
228 AM PDT THU MAY 22 2025  
 
ELEVATED FIRE WEATHER CONDITIONS CONTINUE TODAY ACROSS THE CURED  
GRASSES OF THE INTERIOR BAY AREA AND CENTRAL COAST. POOR OVERNIGHT  
RELATIVE HUMIDITY RECOVERY IS UNDERWAY WITH VALUES OF 15-25% ABOVE  
1,500 FEET. WIDESPREAD MINIMUM DAYTIME RELATIVE HUMIDITY OF 20-40%  
IS EXPECTED AWAY FROM THE IMMEDIATE COAST WITH LOCALLY LOWER VALUES  
DOWN TO 10% ACROSS AREAS OF THE INTERIOR CENTRAL COAST. MODERATE TO  
STRONG ONSHORE WINDS WITH GUSTS OF 25-35 MPH ARE EXPECTED THIS  
AFTERNOON ALONG THE COAST, THROUGH NORTHWEST/SOUTHEAST ORIENTED  
TERRAIN, AND ACROSS RIDGELINES. CONDITIONS IMPROVE TONIGHT AS A  
MODEST MARINE LAYER, AND THUS COOLER AND MOISTER CONDITIONS RETURN  
WITH EXCELLENT RELATIVE HUMIDITY (70%+) EXPECTED IN ALL BUT THE  
HIGHEST TERRAIN OF THE CENTRAL COAST.  
 

 
 
ECC014-222130-  
MORGAN HILL ECC DISPATCH-  
DISCUSSION FOR ALAMEDA AND CONTRA COSTA AND SANTA CLARA COUNTIES  
228 AM PDT THU MAY 22 2025  
 
ELEVATED FIRE WEATHER CONDITIONS CONTINUE TODAY ACROSS THE CURED  
GRASSES OF THE INTERIOR BAY AREA AND CENTRAL COAST. POOR OVERNIGHT  
RELATIVE HUMIDITY RECOVERY IS UNDERWAY WITH VALUES OF 15-25% ABOVE  
1,500 FEET. WIDESPREAD MINIMUM DAYTIME RELATIVE HUMIDITY OF 20-40%  
IS EXPECTED AWAY FROM THE IMMEDIATE COAST WITH LOCALLY LOWER VALUES  
DOWN TO 10% ACROSS AREAS OF THE INTERIOR CENTRAL COAST. MODERATE TO  
STRONG ONSHORE WINDS WITH GUSTS OF 25-35 MPH ARE EXPECTED THIS  
AFTERNOON ALONG THE COAST, THROUGH NORTHWEST/SOUTHEAST ORIENTED  
TERRAIN, AND ACROSS RIDGELINES. CONDITIONS IMPROVE TONIGHT AS A  
MODEST MARINE LAYER, AND THUS COOLER AND MOISTER CONDITIONS RETURN  
WITH EXCELLENT RELATIVE HUMIDITY (70%+) EXPECTED IN ALL BUT THE  
HIGHEST TERRAIN OF THE CENTRAL COAST.  
 

 
 
ECC013-222130-  
FELTON ECC DISPATCH-  
DISCUSSION FOR SANTA CRUZ AND SAN MATEO COUNTIES  
228 AM PDT THU MAY 22 2025  
 
ELEVATED FIRE WEATHER CONDITIONS CONTINUE TODAY ACROSS THE CURED  
GRASSES OF THE INTERIOR BAY AREA AND CENTRAL COAST. POOR OVERNIGHT  
RELATIVE HUMIDITY RECOVERY IS UNDERWAY WITH VALUES OF 15-25% ABOVE  
1,500 FEET. WIDESPREAD MINIMUM DAYTIME RELATIVE HUMIDITY OF 20-40%  
IS EXPECTED AWAY FROM THE IMMEDIATE COAST WITH LOCALLY LOWER VALUES  
DOWN TO 10% ACROSS AREAS OF THE INTERIOR CENTRAL COAST. MODERATE TO  
STRONG ONSHORE WINDS WITH GUSTS OF 25-35 MPH ARE EXPECTED THIS  
AFTERNOON ALONG THE COAST, THROUGH NORTHWEST/SOUTHEAST ORIENTED  
TERRAIN, AND ACROSS RIDGELINES. CONDITIONS IMPROVE TONIGHT AS A  
MODEST MARINE LAYER, AND THUS COOLER AND MOISTER CONDITIONS RETURN  
WITH EXCELLENT RELATIVE HUMIDITY (70%+) EXPECTED IN ALL BUT THE  
HIGHEST TERRAIN OF THE CENTRAL COAST.  
 

 
 
ECC018-222130-  
MONTEREY ECC DISPATCH-  
DISCUSSION FOR MONTEREY AND SAN BENITO COUNTY  
228 AM PDT THU MAY 22 2025  
 
ELEVATED FIRE WEATHER CONDITIONS CONTINUE TODAY ACROSS THE CURED  
GRASSES OF THE INTERIOR BAY AREA AND CENTRAL COAST. POOR OVERNIGHT  
RELATIVE HUMIDITY RECOVERY IS UNDERWAY WITH VALUES OF 15-25% ABOVE  
1,500 FEET. WIDESPREAD MINIMUM DAYTIME RELATIVE HUMIDITY OF 20-40%  
IS EXPECTED AWAY FROM THE IMMEDIATE COAST WITH LOCALLY LOWER VALUES  
DOWN TO 10% ACROSS AREAS OF THE INTERIOR CENTRAL COAST. MODERATE TO  
STRONG ONSHORE WINDS WITH GUSTS OF 25-35 MPH ARE EXPECTED THIS  
AFTERNOON ALONG THE COAST, THROUGH NORTHWEST/SOUTHEAST ORIENTED  
TERRAIN, AND ACROSS RIDGELINES. CONDITIONS IMPROVE TONIGHT AS A  
MODEST MARINE LAYER, AND THUS COOLER AND MOISTER CONDITIONS RETURN  
WITH EXCELLENT RELATIVE HUMIDITY (70%+) EXPECTED IN ALL BUT THE  
HIGHEST TERRAIN OF THE CENTRAL COAST.  
 

 
 
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