Full Notification

...RED FLAG WARNING IN EFFECT FROM 10 PM WEDNESDAY TO 7 AM PST FRIDAY FOR LOW HUMIDITY AND GUSTY OFFSHORE WINDS FOR THE NORTH BAY MOUNTAINS AND EAST BAY HILLS...
 
The National Weather Service in San Francisco has issued a Red Flag Warning, which is in effect from 10 PM Wednesday to 7 AM PST Friday.
 
Another round of increased offshore flow is forecast to develop late Wednesday night and persist into early Friday morning across the North Bay Mountains and East Bay Hills. Northeast wind gusts from 40 to 50 mph will be possible in these areas with locally stronger gusts in the region`s highest peaks. These winds will combined with already critically low relative humidity values
creating critical fire weather conditions on top of very dry fuels.
 
* AFFECTED AREA...North Bay Mountains and East Bay Hills above 1000 feet.
 
* WIND...Northeast winds 15 to 30 mph with gusts 40-50 mph,locally up to 50-60 mph in the highest peaks.
 
* HUMIDITY...Lowering 8-18% during afternoon hours with
  recoveries less than 30%.
 
* HIGHEST THREAT...The hills of eastern Napa County as well as around Mt Saint Helena, Mt Tamalpais, Atlas Peak, Mt Diablo, Mt Hamilton.
 
* IMPACTS...Any fires that develop will likely spread rapidly. Outdoor burning is not recommended.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...
 
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 can contribute to extreme fire behavior.
 
Do not mow dry grass. Do not use mechanized or powered equipment in or near dry vegetation.  Refrain from using outdoor fire pits. Report any sign of smoke or fire immediately by calling 911.