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| RED FLAG WARNING |
STRONG NORTHERLY WINDS ARE ALREADY DEVELOPING ACROSS THE NORTH AND EAST BAY HILLS EARLY THIS MORNING. NORTH TO NORTHEAST WINDS WILL CONTINUE TO INCREASE THROUGH THE DAY AS HUMIDITY VALUES CONTINUE TO DRY OUT. THE STRONGEST WINDS WILL END BY THIS EVENING BUT VERY DRY AIR WILL STAY IN PLACE AT LEAST THROUGH WEDNESDAY MORNING
AFFECTED AREA: THE NORTH AND EAST BAY HILLS ABOVE 1000 FEET. THE STRONGEST WINDS WILL INITIALLY ARRIVE IN THE NAPA COUNTY HILLS EARLY THIS MORNING AND THEN SPREAD INTO THE EAST BAY HILLS DURING THE MID-MORNING HOURS. BY THIS AFTERNOON THE OFFSHORE WINDS WILL REACH THE COASTAL HILLS OF MARIN AND SONOMA COUNTY.
WINDS: NORTH 15 TO 25 MPH WITH FREQUENT GUSTS 35 TO 40 MPH.
RELATIVE HUMIDITY: 30 TO 40 PERCENT AT SUNRISE... LOWERING 12 TO 25 PERCENT THROUGH THE DAY WITH LITTLE OR NO HUMIDITY RECOVERY TONIGHT.
IMPACTS: ANY FIRE STARTS DURING THE PERIOD OF STRONG WINDS AND LOW HUMIDITY WILL BE DIFFICULT TO SUPPRESS WITH RAPID RATES OF SPREAD. PRESCRIBED AND BACKYARD BURNERS SHOULD USE EXTREME CAUTION DURING THIS RED FLAG EVENT.
PRECAUTIONARY/PREPAREDNESS ACTIONS
Instruction:
A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF STRONG WINDS... LOW RELATIVE HUMIDITY... AND WARM TEMPERATURES WILL CREATE EXPLOSIVE FIRE GROWTH POTENTIAL.
Area: NORTH BAY MOUNTAINS / EAST BAY HILLS AND DIABLO RANGE
Affected Counties or parts of: San Francisco, Santa Cruz, San Mateo, Marin, Monterey, Contra Costa, Napa, San Benito, Sonoma, Santa Clara, Alameda
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