WEATHER »
  • Red Flag Warning for North Bay Interior Valleys County, California
  • Red Flag Warning issued October 14 at 4:22AM PDT until October 14 at 11:00PM PDT by NWS
  • Effective: Saturday, October 14, 2017 at 4:22 a.m.
  • Expires: Saturday, October 14, 2017 at 11 p.m.
  • ...RED FLAG WARNING IN EFFECT THROUGH 11 PM SATURDAY FOR THE
    NORTH BAY MOUNTAINS AS WELL AS THE EAST BAY HILLS AND THE DIABLO
    RANGE...
    ...RED FLAG WARNING IN EFFECT THROUGH 5 PM SATURDAY FOR THE NORTH
    BAY VALLEYS...PARTICULARLY FOR NAPA VALLEY AND EASTERN SONOMA
    COUNTY ALONG THE HIGHWAY 12 CORRIDOR...
    .Dry, gusty offshore winds actively bringing critical fire weather
    conditions to the North Bay early this morning with numerous
    reports of spotting and large runs. The strongest winds will be
    at elevations above 1000 feet in the North Bay mountains and East
    Bay hills and occur between 4am and 10am this morning. Breezy
    conditions are also expected at isolated lower elevation
    locations, mainly along parts of Napa Valley and eastern Sonoma
    County from the city of Sonoma northward along the Highway 12
    corridor. Winds are forecast to gradually decrease Saturday
    afternoon and evening, but locally breezy offshore winds will
    return overnight. This red flag warning may need to be expanded
    through tonight depending on how the weather pattern and
    firefighting efforts evolves through the day. A wind advisory has
    been issued in conjunction with the red flag warning for the
    gusty offshore winds at the higher elevations.
    ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 11 PM PDT THIS
    EVENING FOR LOCALLY STRONG AND GUSTY OFFSHORE WINDS AND LOW
    HUMIDITY...
    * AFFECTED AREA...Fire weather zones 507 and 511.
    * WIND...North to northeast winds of 20 to 30 mph with gust of 40
    to 50 mph with isolated gusts to 60 mph possible on highest
    ridges and peaks. Strongest winds are expected above 1000 feet
    between 4am and 10am Saturday.
    * HUMIDITY...Minimum daytime values between 10-20 percent with
    night time recovery values between 25-35 percent.
    * HIGHEST THREAT...The Napa County hills, around Mount Saint
    Helena, hills of eastern Sonoma County, and the hills of
    Marin County around Mount Tamalpais.
    * IMPACTS...Any fires that develop will likely spread rapidly.
    Outdoor burning is not recommended.

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