Due to a combination of strong winds, and low humidity in the dry month of October, the National Weather Service has issued a red flag warning for the Bay Area on Sunday and Monday, according to the Mercury News. Nice quote:
“We’re recommending that people bring in lawn furniture so they don’t become projectiles,’’ said Shawn Weagle, a forecaster with the National Weather Service.
Click the “read more” link to see the warning.
RED FLAG WARNING
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
250 PM PDT SAT OCT 9 2004
CAZ205>211-265-274-275-101100-
...RED FLAG WARNING SUNDAY THROUGH MONDAY FOR THE ENTIRE SAN
FRANCISCO AND MONTEREY BAY FORECAST AREA FOR VERY STRONG OFFSHORE
WINDS AND LOW RELATIVE HUMIDITIES...
FIRE WEATHER ZONES INCLUDED IN THIS WARNING ARE:
CAZ205 SONOMA AND MARIN COUNTIES-
CAZ206 SAN FRANCISCO COUNTY-
CAZ207 ALAMEDA AND CONTRA COSTA COUNTIES...THE EAST BAY HILLS-
CAZ208 SANTA CLARA COUNTY-
CAZ209 LOS PADRES NATIONAL FOREST-
CAZ210 THE SALINAS VALLEY AND PINNACLES NM-
CAZ211 THE DELTA-
CAZ265 NAPA COUNTY-
CAZ274 SANTA CRUZ MOUNTAINS-
CAZ275 SAN MATEO HILLS-
DISCUSSION:
THE NATIONAL WEATHER SERVICE HAS ISSUED A RED FLAG WARNING FOR ALL
AREAS OF THE FIRE WEATHER DISTRICT FOR SUNDAY THROUGH MONDAY FOR
STRONG OFFSHORE WINDS AND LOW RELATIVE HUMIDITIES.
STRONG HIGH PRESSURE QUICKLY BUILDING INTO THE PACIFIC NORTHWEST
COMBINED WITH LOW PRESSURE NEAR LAS VEGAS...WILL PRODUCE STRONG AND
GUSTY OFFSHORE WINDS SUNDAY THROUGH MONDAY. WINDS IN THE NORTH AND
EAST BAY HILLS WILL INCREASE TO 25 TO 35 MPH LATE TONIGHT WITH GUSTS
TO 50 MPH POSSIBLE BY EARLY SUNDAY MORNING. WHILE WINDS IN THE
COASTAL VALLEYS WILL NOT BE AS STRONG...AN INCREASE IN WIND SPEEDS TO
15 TO 25 MPH WILL OCCUR THERE BY SUNDAY MORNING. DURING SUNDAY
AFTERNOON...RELATIVE HUMIDITY VALUES WILL DROP INTO THE TEENS INLAND
AND FALL INTO THE 35-45% RANGE AT THE COAST AS THE OFFSHORE FLOW
DEEPENS.
DURING SUNDAY NIGHT...LITTLE IF ANY OVERNIGHT RELATIVE HUMIDITY
RECOVERY IS EXPECTED IN THE HILLS AS NORTHEAST TO EAST WINDS AGAIN
BLOW BETWEEN 20 AND 30 MPH. ON MONDAY...THE STRENGTH OF THE OFFSHORE
WINDS WILL BEGIN TO DECREASE...ALTHOUGH RELATIVE HUMIDITY VALUES
WILL REMAIN EXTREMELY LOW...THUS RED FLAG CONDITIONS ARE EXPECTED TO
PERSIST THROUGH THE DAY.
PLEASE ADVISE THE APPROPRIATE OFFICIALS AND FIRE CREWS IN THE FIELD
OF THIS RED FLAG WARNING.
