Red Flag Warning
San Francisco County, CA
...RED FLAG WARNING REMAINS IN EFFECT FROM 11 PM THURSDAY TO 5 PM
PDT SATURDAY FOR STRONG OFFSHORE WINDS AND CRITICALLY DRY
CONDITIONS FOR ALL INTERIOR BAY AREA ZONES, AS WELL AS THE CITY
OF SAN FRANCISCO, THE SAN FRANCISCO PENINSULA COAST, AND THE BAY
SHORELINE...
* AFFECTED AREA...Fire Weather Zone 006 San Francisco, Fire
Weather Zone 502 Marin Coastal Range, Fire Weather Zone 503
Sonoma Coastal Range, Fire Weather Zone 504 North Bay Interior
Mountains, Fire Weather Zone 506 North Bay Interior Valleys,
Fire Weather Zone 508 San Francisco Bay Shoreline, Fire
Weather Zone 509 San Francisco Peninsula Coast, Fire Weather
Zone 510 East Bay Interior Valleys, Fire Weather Zone 512
Santa Cruz Mountains, Fire Weather Zone 513 Santa Clara Valley
Including San Jose, Fire Weather Zone 514 Eastern Santa Clara
Hills and Fire Weather Zone 515 East Bay Hills.
* TIMING...11 PM Thursday until 5 PM Saturday
* WINDS...North 25 to 35 mph with gusts up to 50 mph.
* RELATIVE HUMIDITY...As low as 12 percent.
* LIGHTNING...None.
* IMPACTS...The combination of gusty winds and low humidity can
cause fire to rapidly grow in size and intensity. Outdoor
burning is not recommended. Despite recent cool weather and
high humidity, we are expecting a widespread and prolonged
offshore wind event which will likely dry fuels out very
quickly given their volatility over the past several weeks.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
