Friday, May 16, 2014

[californiadisasters] Santa Ana Wind Red Flag Warnings (5/15/14-PM)



...RED FLAG WARNING IN EFFECT UNTIL 8 PM PDT FRIDAY FOR THE  VENTURA AND LOS ANGELES COUNTY MOUNTAINS FOR GUSTY ONSHORE WINDS  AND VERY LOW RELATIVE HUMIDITY...    .WINDS HAVE SHIFTED TO ONSHORE ACROSS THE COASTAL AND VALLEY  AREAS...AS WELL AS THE LOWER MOUNTAIN ELEVATIONS. THE ONSHORE  WINDS WILL CONTINUE TO GUST BETWEEN 20 AND 25 MPH THROUGH THE  EARLY EVENING HOURS. OVERNIGHT HUMIDITY RECOVERIES WILL ONCE AGAIN  BE EXTREMELY POOR IN THE MOUNTAINS AND FOOTHILLS.    ON FRIDAY...THE STRONG RIDGE OF HIGH PRESSURE WILL BEGIN TO  WEAKEN ALLOWING FOR STRONGER ONSHORE FLOW DURING THE AFTERNOON  AND EVENING HOURS. WHILE THERE WILL BE SLIGHT COOLING ACROSS  COASTAL AND VALLEY AREAS...THERE WILL BE LITTLE CHANGE IN THE HOT  TEMPERATURES ACROSS THE MOUNTAINS AND ANTELOPE VALLEY. RED FLAG  WARNINGS HAVE BEEN EXTENDED INTO FRIDAY EVENING FOR THE MOUNTAINS  OF LOS ANGELES AND VENTURA COUNTIES DUE TO ONSHORE WINDS GUSTING  TO BETWEEN 25 AND 30 MPH ON FRIDAY COINCIDING WITH TEMPERATURES  IN THE 90S AND HUMIDITIES IN THE SINGLE DIGITS AND LOWER TEENS.  PORTIONS OF THE VALLEYS...FOOTHILLS...AND DESERTS WILL ALSO  LIKELY SEE SOME BRIEF CRITICAL FIRE WEATHER CONDITIONS ON FRIDAY  AFTERNOON BUT DURATIONS ARE NOT EXPECTED TO BE LONG ENOUGH TO  WARRANT AN EXTENSION OF THE RED FLAG WARNING FOR THESE AREAS.    CAZ253-254-161700-  /O.CON.KLOX.FW.W.0006.000000T0000Z-140517T0300Z/  VENTURA COUNTY MOUNTAINS / LOS PADRES NATIONAL FOREST-  LOS ANGELES COUNTY MOUNTAINS / ANGELES NATIONAL FOREST-  809 PM PDT THU MAY 15 2014    ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 8 PM PDT FRIDAY FOR  GUSTY ONSHORE WINDS AND VERY LOW RELATIVE HUMIDITY FOR THE  MOUNTAINS OF LOS ANGELES AND VENTURA COUNTIES...    * WINDS...ONSHORE WINDS GUSTING TO BETWEEN 20 AND 25 MPH THROUGH    EARLY THIS EVENING...WITH GUSTS BETWEEN 25 AND 30 MPH ON    FRIDAY AFTERNOON.    * RELATIVE HUMIDITY...6 TO 12 PERCENT ON FRIDAY.    * TEMPERATURES...IN THE 90S ACROSS LOWER ELEVATIONS...UPPER 70S    AND 80S UPPER ELEVATIONS.    * IMPACTS...EXTREME FIRE BEHAVIOR IS POSSIBLE IF FIRE IGNITION    OCCURS.    PRECAUTIONARY/PREPAREDNESS ACTIONS...    A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS  ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF  GUSTY WINDS...VERY LOW RELATIVE HUMIDITY...AND HOT TEMPERATURES  WILL CREATE EXTREME FIRE BEHAVIOR. PLEASE ADVISE THE APPROPRIATE  OFFICIALS OR FIRE CREWS IN THE FIELD OF THIS RED FLAG WARNING.    &&    $$    GOMBERG/SIRARD
NWS LOS ANGELES/OXNARD


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