Red Flag Warning issued November 6 at 1:11PM PST until November 7 at 7:00AM PST by NWS San Francisco CA
…RED FLAG WARNING NOW IN EFFECT THROUGH THURSDAY MORNING FOR
THE BAY AREA FOR STRONG OFFSHORE WINDS AND CRITICALLY DRY
CONDITIONS.
…FOR THE CENTRAL COAST THE RED FLAG WARNING WILL GO THROUGH 5
PM WEDNESDAY WITH GUSTS DIMINISHING THROUGH THE EVENING…
.Strong and gusty offshore winds, critical relative humidity, and
dry fuels continue across much of the region. North to
northeasterly wind gusts will average between 25 and 40 mph,
particularly across the higher terrain of the Santa Cruz
Mountains, East Bay Hills, North Bay Mountains, as well as
interior portions of Napa and Sonoma counties. Wind gusts between
30 to 40 mph with occasional gusts greater than 55 mph will
continue across the North Bay interior mountains through
Wednesday evening. Afternoon humidity values will range between
the single digits and 25 percent. Overnight humidity recovery will
be poor between 20 and 45 percent. Fire crews and residents are
urged to remain abreast of the weather forecast through Thursday
morning.
* 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, Fire
Weather Zone 515 East Bay Hills, and Fire Weather Zone 529
Northern Monterey Bay.
* TIMING…11 AM Tuesday until 7 AM Thursday.
* WINDS…Northeast 15 to 25 mph with gusts up to 40 mph.
* RELATIVE HUMIDITY…As low as 12 percent.
* LIGHTNING…None anticipated.
* IMPACTS…Despite recent rainfall, a long duration offshore
flow event is anticipated. This will result in the rapid
curing of fuels. The combination of strong winds and low
humidity will cause fire to rapidly grow in size and
intensity. Outdoor burning is not recommended and may be
prohibited in some areas.
A Red Flag Warning means that critical fire weather conditions
are either occurring now…or will shortly. A combination of
strong winds…and low relative humidity can contribute to
extreme fire behavior.
