Tuesday, December 24, 2013

[californiadisasters] Santa Ana Wind Red Flag Warning (12/24/13-PM)



...RED FLAG WARNING IN EFFECT FROM 6 AM WEDNESDAY TO 6 PM  THURSDAY FOR GUSTY NORTHEAST WINDS AND LOW RELATIVE HUMIDITY FOR  MUCH OF LOS ANGELES AND VENTURA COUNTIES...    .MODERATE TO LOCALLY STRONG SANTA ANA WINDS WILL DEVELOP OVERNIGHT  TONIGHT ACROSS THE MOUNTAINS OF LOS ANGELES AND VENTURA COUNTIES  AND ASSOCIATED COASTAL AND VALLEY AREAS. THE OFFSHORE WINDS ARE  EXPECTED TO BE STRONGEST WEDNESDAY FROM SUNRISE TO LATE AFTERNOON WITH  WIND GUSTS IN THE MOUNTAINS OF 45 TO 55 MPH EXPECTED WHILE WIND  GUSTS OF 35 TO 45 MPH ARE EXPECTED ACROSS WIND PRONE VALLEY AREAS.  THE SANTA ANA WINDS ARE EXPECTED TO WEAKEN THURSDAY  EVENING...ALTHOUGH LOCALLY GUSTY WINDS ARE STILL EXPECTED THROUGH  FAVORED CANYONS AND PASSES.    RELATIVE HUMIDITY LEVELS WILL FALL TO BETWEEN 10 AND 15 PERCENT  WEDNESDAY MORNING MOST AREAS...WITH VALUES IN THE LOWER TEENS COMMON  ACROSS THE WARNED AREA BY WEDNESDAY AFTERNOON. ALSO...AFTERNOON  TEMPERATURES IN VALLEYS AND FAVORED COASTAL AREAS WILL BE IN THE  UPPER 70S AND 80S. POOR RELATIVE HUMIDITY RECOVERIES ARE EXPECTED  WEDNESDAY NIGHT WITH MANY LOCATIONS REMAINING BELOW 25 PERCENT. ON  THURSDAY...CONDITIONS WILL CONTINUE TO DRY WITH AREAS OF SINGLE  DIGIT RELATIVE HUMIDITIES LIKELY.    A RED FLAG WARNING HAS BEEN ISSUED FOR MUCH OF LOS ANGELES AND  VENTURA COUNTIES FOR WEDNESDAY AND THURSDAY DUE TO THE COMBINATION  OF MODERATE OFFSHORE WINDS...LOW HUMIDITIES...WARM  TEMPERATURES...AND ABNORMALLY DRY FUELS.    CAZ240-241-244-245-288-547-250645-  /O.NEW.KLOX.FW.W.0008.131225T1400Z-131227T0200Z/  VENTURA COUNTY COAST-  LOS ANGELES COUNTY COAST INCLUDING DOWNTOWN LOS ANGELES-  VENTURA COUNTY INTERIOR VALLEYS-VENTURA COUNTY COASTAL VALLEYS-  SANTA CLARITA VALLEY-LOS ANGELES COUNTY SAN FERNANDO VALLEY-  238 PM PST TUE DEC 24 2013    ...RED FLAG WARNING IN EFFECT FROM 6 AM WEDNESDAY TO 6 PM PST  THURSDAY FOR GUSTY NORTHEAST WINDS AND LOW RELATIVE HUMIDITY FOR  THE SANTA CLARITA VALLEY...SAN FERNANDO VALLEY...AND VENTURA  COUNTY VALLEYS...VENTURA COUNTY COAST...AND THE LOS ANGELES COUNTY  COAST FROM MALIBU TO THE HOLLYWOOD HILLS...    THE NATIONAL WEATHER SERVICE IN LOS ANGELES/OXNARD HAS ISSUED A  RED FLAG WARNING FOR GUSTY NORTHEAST WINDS AND LOW RELATIVE  HUMIDITY...WHICH IS IN EFFECT FROM 6 AM WEDNESDAY TO 6 PM PST  THURSDAY.    * WINDS...NORTHEAST 15 TO 25 MPH WITH GUSTS 35 TO 45 MPH.    * RELATIVE HUMIDITY...AS LOW AS 8 PERCENT.    * TEMPERATURES...HIGHS IN THE 70S AND 80S.    * IMPACTS...IF FIRE IGNITION OCCURS...THERE WOULD BE THE    POTENTIAL FOR RAPID WILDFIRE SPREAD THAT COULD THREATEN LIFE AND    PROPERTY.    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 WILL  CREATE EXTREME FIRE BEHAVIOR. PLEASE ADVISE THE APPROPRIATE  OFFICIALS OR FIRE CREWS IN THE FIELD OF THIS RED FLAG WARNING.    &&    $$    JACKSON

URGENT - FIRE WEATHER MESSAGE  NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA  238 PM PST TUE DEC 24 2013    ...RED FLAG WARNING IN EFFECT FROM 6 AM WEDNESDAY TO 6 PM  THURSDAY FOR GUSTY NORTHEAST WINDS AND LOW RELATIVE HUMIDITY FOR  MUCH OF LOS ANGELES AND VENTURA COUNTIES...    .MODERATE TO LOCALLY STRONG SANTA ANA WINDS WILL DEVELOP OVERNIGHT  TONIGHT ACROSS THE MOUNTAINS OF LOS ANGELES AND VENTURA COUNTIES  AND ASSOCIATED COASTAL AND VALLEY AREAS. THE OFFSHORE WINDS ARE  EXPECTED TO BE STRONGEST WEDNESDAY FROM SUNRISE TO LATE AFTERNOON WITH  WIND GUSTS IN THE MOUNTAINS OF 45 TO 55 MPH EXPECTED WHILE WIND  GUSTS OF 35 TO 45 MPH ARE EXPECTED ACROSS WIND PRONE VALLEY AREAS.  THE SANTA ANA WINDS ARE EXPECTED TO WEAKEN THURSDAY  EVENING...ALTHOUGH LOCALLY GUSTY WINDS ARE STILL EXPECTED THROUGH  FAVORED CANYONS AND PASSES.    RELATIVE HUMIDITY LEVELS WILL FALL TO BETWEEN 10 AND 15 PERCENT  WEDNESDAY MORNING MOST AREAS...WITH VALUES IN THE LOWER TEENS COMMON  ACROSS THE WARNED AREA BY WEDNESDAY AFTERNOON. ALSO...AFTERNOON  TEMPERATURES IN VALLEYS AND FAVORED COASTAL AREAS WILL BE IN THE  UPPER 70S AND 80S. POOR RELATIVE HUMIDITY RECOVERIES ARE EXPECTED  WEDNESDAY NIGHT WITH MANY LOCATIONS REMAINING BELOW 25 PERCENT. ON  THURSDAY...CONDITIONS WILL CONTINUE TO DRY WITH AREAS OF SINGLE  DIGIT RELATIVE HUMIDITIES LIKELY.    A RED FLAG WARNING HAS BEEN ISSUED FOR MUCH OF LOS ANGELES AND  VENTURA COUNTIES FOR WEDNESDAY AND THURSDAY DUE TO THE COMBINATION  OF MODERATE OFFSHORE WINDS...LOW HUMIDITIES...WARM  TEMPERATURES...AND ABNORMALLY DRY FUELS.    CAZ246-253-254-250645-  /O.NEW.KLOX.FW.W.0008.131225T1400Z-131227T0200Z/  SANTA MONICA MOUNTAINS RECREATIONAL AREA-  VENTURA COUNTY MOUNTAINS / LOS PADRES NATIONAL FOREST-  LOS ANGELES COUNTY MOUNTAINS / ANGELES NATIONAL FOREST-  238 PM PST TUE DEC 24 2013    ...RED FLAG WARNING IN EFFECT FROM 6 AM WEDNESDAY TO 6 PM PST  THURSDAY FOR GUSTY NORTHEAST WINDS AND LOW RELATIVE HUMIDITY FOR  THE MOUNTAINS OF LOS ANGELES AND VENTURA COUNTIES...    THE NATIONAL WEATHER SERVICE IN LOS ANGELES/OXNARD HAS ISSUED A  RED FLAG WARNING FOR GUSTY NORTHEAST WINDS AND LOW RELATIVE  HUMIDITY...WHICH IS IN EFFECT FROM 6 AM WEDNESDAY TO 6 PM PST  THURSDAY.    * WINDS...NORTHEAST 20 TO 30 MPH WITH GUSTS 45 TO 55 MPH.    * RELATIVE HUMIDITY...AS LOW AS 10 PERCENT.    * TEMPERATURES...HIGHS 70S LOW ELEVATIONS TO 50S HIGHER    ELEVATIONS. HIGH TEMPERATURES IN THE SANTA MONICA MOUNTAINS ARE    EXPECTED TO BE IN THE 80S...EXCEPT 70S COASTAL SLOPES.    * IMPACTS...IF FIRE IGNITION OCCURS...THERE WOULD BE THE POTENTIAL    FOR RAPID WILDFIRE SPREAD THAT COULD THREATEN LIFE AND PROPERTY.    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 WILL  CREATE EXTREME FIRE BEHAVIOR. PLEASE ADVISE THE APPROPRIATE  OFFICIALS OR FIRE CREWS IN THE FIELD OF THIS RED FLAG WARNING.
Source: NWS Los Angeles/Oxnard


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