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Thursday, June 14, 2012

FIRE WEATHER WATCH FOR NORTH SF BAY MOUNTAINS..

THE NATIONAL WEATHER SERVICE THE SAN FRANCISCO BAY AREA HAS
ISSUED A FIRE WEATHER WATCH...WHICH IS IN EFFECT FROM FRIDAY
EVENING THROUGH SATURDAY MORNING.


A FIRE WEATHER WATCH MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE FORECAST TO OCCUR. LISTEN FOR LATER FORECASTS AND POSSIBLE
RED FLAG WARNINGS.

TIMING: FIRE WEATHER WATCH IN EFFECT FROM FRIDAY EVENING THROUGH
SATURDAY MORNING FOR GUSTY WINDS AND LOW HUMIDITY FOR NORTH BAY MOUNTAINS

DISCUSSION: HIGH PRESSURE WILL BUILD OVER NORTHERN CALIFORNIA FRIDAY AND
SATURDAY RESULTING IN GUSTY OFFSHORE FLOW. NORTHERLY WINDS WILL BE
STRONGEST OVER THE NORTH BAY MOUNTAINS FRIDAY NIGHT AND SATURDAY MORNING.
IN ADDITION...THE OFFSHORE FLOW WILL ALLOW FOR POOR HUMIDITY
RECOVERIES ABOVE 1000 FEET FRIDAY NIGHT.
 LOCALLY STRONG AND GUSTY OFFSHORE WINDS NORTH BAY MOUNTAINS FRIDAY NIGHT ALONG WITH POOR HUMIDITY RECOVERIES..

AFFECTED AREA: FIRE ZONE 507 NORTH BAY MOUNTAINS.


TIMING: FIRE WEATHER WATCH IN EFFECT FROM FRIDAY EVENING THROUGH
SATURDAY MORNING FOR GUSTY WINDS AND LOW HUMIDITY FOR NORTH BAY MOUNTAINS WINDS WILL INCREASE FRIDAY EVENING AND PEAK DURING THE
OVERNIGHT HOURS. WINDS WILL GRADUALLY DECREASE SATURDAY
MORNING.

WIND: NORTH TO NORTHEAST WINDS FROM 15 TO 25 MPH WITH GUSTS UP TO
40 MPH OVER THE RIDGES AND PEAKS.

HUMIDITY: POOR HUMIDITY RECOVERIES FRIDAY NIGHT WITH RELATIVE
HUMIDITY VALUES REMAINING BELOW 30 PERCENT.

IMPACTS: THE COMBINATION OF LOW RELATIVE HUMIDITIES AND GUSTY
OFFSHORE WINDS HAS THE POTENTIAL TO CREATE CRITICAL FIRE
WEATHER CONDITIONS...ESPECIALLY AT ELEVATIONS BETWEEN 1000 AND
2000 FEET WHERE FUELS ARE DRY.


URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
1050 AM PDT THU JUN 14 2012

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****REMINDER**** Every fire has the ability to be catastrophic. The wildland fire management environment has profoundly changed. Growing numbers of communities, across the nation, are experiencing longer fire seasons; more frequent, bigger, and more severe, fires are a real threat. Be careful with all campfires and equipment.
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