Full Notification

North Bay Mountains-East Bay Interior Valleys-
East Bay Hills and the Diablo Range-

...RED FLAG WARNING IN EFFECT FROM 11 PM THIS EVENING TO 6 AM PDT MONDAY FOR OFFSHORE WINDS AND LOWERING HUMIDITY FOR THE NORTH AND EAST BAY HILLS AS WELL AS THE INTERIOR VALLEYS OF THE EAST BAY...

The National Weather Service in San Francisco has issued a Red Flag Warning for moderate offshore winds and lowering humidity, which is in effect from 11 PM this evening to 6 AM PDT Monday.

* AFFECTED AREA...Fire Weather Zone 507 North Bay Mountains, especially the Napa County hills, Fire Weather Zone 510 East Bay Interior Valleys and Fire Weather Zone 511 East Bay Hills and the Diablo Range.

* TIMING...11 pm Friday through 6 am Monday

* WINDS...Northerly winds 15 to 30 mph gusts 40 to 50 mph except locally to 60 mph above 2500 feet.

* RELATIVE HUMIDITY...Lowering 20-30 percent by Saturday morning then dropping 10-20% Saturday and Sunday afternoon with only moderate night time recovery.

* TEMPERATURES...Highs into the 80s and lower 90s Saturday and Sunday afternoon.

* IMPACTS...New ignitions will see rapid fire growth.

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.

Please hold off on working in tall dry grass or dry fuel beds until the weather event passes.