654  
FLUS46 KMTR 050153  
HWOMTR  
 
HAZARDOUS WEATHER OUTLOOK  
NATIONAL WEATHER SERVICE SAN FRANCISCO CA  
653 PM PDT THU OCT 4 2018  
 
CAZ507-510>512-051300-  
NORTH BAY MOUNTAINS-EAST BAY INTERIOR VALLEYS-  
EAST BAY HILLS AND THE DIABLO RANGE-SANTA CRUZ MOUNTAINS-  
653 PM PDT THU OCT 4 2018  
 
THIS HAZARDOUS WEATHER OUTLOOK IS FOR ELEVATIONS ABOVE 1000 FEET  
IN THE SAN FRANCISCO BAY AREA, AS WELL AS PORTIONS OF THE EAST BAY  
VALLEYS.  
   
DAY ONE
 
THURSDAY NIGHT  
 
ISOLATED SHOWERS WILL END BY EVENING. EXPECT PARTLY CLOUDY AND  
MILD CONDITIONS OVERNIGHT.  
   
DAYS TWO THROUGH SEVEN
 
FRIDAY THROUGH WEDNESDAY  
 
AN UPPER TROUGH IS FORECAST TO DIG INLAND TO THE EAST OF OUR AREA  
EARLY IN THE WEEKEND AND SETTLE INTO THE GREAT BASIN BY LATE  
SATURDAY. THIS TYPE OF WEATHER SCENARIO IN THE AUTUMN TYPICALLY  
RESULTS IN BREEZY NORTHERLY WINDS ACROSS MUCH OF OUR REGION, AND  
LOCALLY WINDY CONDITIONS IN THE HILLS. NORTHWEST WINDS ARE  
EXPECTED TO INCREASE ALONG THE COAST ON SATURDAY AFTERNOON WITH  
LOCAL COASTAL WIND GUSTS UP TO 40 MPH POSSIBLE BY LATE IN THE  
AFTERNOON. THEN, ON SATURDAY NIGHT, WINDS ARE EXPECTED TO SUBSIDE  
NEAR THE COAST, BUT TURN TO THE NORTH AND INCREASE IN THE HILLS.  
STRONGEST NORTH WINDS ARE EXPECTED IN THE NORTH AND EAST BAY HILLS  
FROM LATE SATURDAY NIGHT INTO SUNDAY WHEN WIND GUSTS OF UP TO 50  
MPH ARE POSSIBLE. A WIND ADVISORY MAY BE NEED FOR THE NORTH AND  
EAST BAY HILLS SATURDAY NIGHT INTO SUNDAY. LOCALLY WINDY  
CONDITIONS ARE POSSIBLE ELSEWHERE, INCLUDING THE SANTA CRUZ  
MOUNTAINS AND ISOLATED AREAS NEAR SEA LEVEL AROUND THE DELTA AND  
IN NORTHEAST CONTRA COSTA COUNTY.  
 
WINDS IN THE HILLS ARE FORECAST TO SUBSIDE BY SUNDAY AFTERNOON,  
BUT THEN INCREASE ONCE AGAIN SUNDAY NIGHT INTO MONDAY MORNING.  
WINDS ARE EXPECTED TO DECREASE IN ALL AREAS BY MONDAY AFTERNOON.  
 
THESE NORTHERLY WINDS OVER THE WEEKEND WILL BRING A MUCH DRIER  
AIRMASS INTO THE REGION. RECENT RAINS HAVE DECREASED FIRE WEATHER  
CONCERNS, ESPECIALLY ACROSS MUCH OF THE NORTH BAY. HOWEVER, IN  
THOSE AREAS THAT RECEIVED LITTLE OR NO RAIN, THE COMBINATION OF  
STRONG AND GUSTY WINDS AND LOWERING HUMIDITY WILL INCREASE FIRE  
DANGER, ESPECIALLY BY LATE SUNDAY. PLEASE CONTINUE TO MONITOR  
LATEST FORECASTS CONCERNING THIS UPCOMING WIND EVENT.  
 

 
 
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