WEATHER »
  • Red Flag Warning for Northern Monterey Bay County, California
  • Red Flag Warning issued October 14 at 5:07PM PDT until October 15 at 8:00AM PDT by NWS
  • Effective: Saturday, October 14, 2017 at 5:07 p.m.
  • Expires: Sunday, October 15, 2017 at 8 a.m.
  • ...RED FLAG WARNING REMAINS IN EFFECT THROUGH 8 AM PDT SUNDAY FOR
    THE NORTH BAY MOUNTAINS...
    ...RED FLAG WARNING NOW IN EFFECT THROUGH 8 AM PDT SUNDAY FOR THE
    EAST BAY HILLS AND THE DIABLO RANGE...
    ...RED FLAG WARNING FOR THE NORTH BAY VALLEYS WILL BE ALLOWED TO
    EXPIRE AT 5 PM PDT SATURDAY...
    .Northeast to east winds had decreased in most areas late Saturday
    afternoon and are expected to remain mostly light through
    Saturday evening. However, easterly winds are forecast to
    increase in the hills of the North and East Bay late tonight.
    Winds in the hills tonight are not expected to be as strong as
    last night, but still strong enough to create critical fire
    weather conditions when combined with the warm and very dry
    airmass and dry fuels. Expect very poor overnight humidity
    recoveries in the North Bay Mountains and East Bay Hills tonight
    with relative humidity values remaining below 30 percent, and even
    below 20 percent on the higher ridges. Minimum relative humidity
    values on Sunday are forecast to be 10 to 20 percent and as low as
    the single digits in the hills. In addition, high temperatures on
    Sunday are forecast to be warmer than Saturday by about five
    degrees. Overnight relative humidity recoveries are expected to
    be better for North Bay Valleys and winds will mostly be light in
    the valleys.
    Warm and very dry conditions are forecast to continue into Monday,
    but winds will generally be light, even in the hills, from mid
    morning Sunday through Monday.
    ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 AM PDT SUNDAY FOR
    LOW RELATIVE HUMIDITIES AND OFFSHORE WINDS FOR FIRE WEATHER ZONE
    507...
    * AFFECTED AREA...Fire weather zone 507. North Bay Mountains.
    * WIND...North to northeast winds of 10 to 15 mph with gusts of 25
    and with isolated gusts to 30 mph possible on highest ridges and
    peaks. Strongest winds expected in the Napa Hills and hills of
    eastern Sonoma County between midnight and sunrise early Sunday
    morning.
    * HUMIDITY...Minimum daytime values between 5 to 15 percent
    with night time recovery values between 15 to 35 percent.
    * HIGHEST THREAT...The Napa County hills, around Mount Saint
    Helena, hills of eastern Sonoma County.
    * IMPACTS...Any fires that develop will likely spread rapidly.
    Outdoor burning is not recommended.

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