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Tuesday, October 25, 2011

Red Flag Warning: Los Angeles & Ventura County Mountains

Red Flag Warning
 National Weather Service Has Issued Red Flag Warning in effect from late wednesday afternoon through Thursday afternoon over the Los Angeles and Ventura county mountains for gusty offshore winds and very low relative humidity.


 HIGH PRESSURE WILL FORM OVER THE SURFACE OF THE GREAT BASIN ON WEDNESDAY... 


RESULTING IN GUSTY OFFSHORE WINDS OVER THE LOS ANGELES AND VENTURA COUNTY MOUNTAINS STARTING LATE WEDNESDAY  MORNING...


 WHICH WILL THEN SPREAD INTO THE VALLEYS WEDNESDAY NIGHT AND CONTINUE THROUGH EARLY THURSDAY AFTERNOON BEFORE WEAKENING. THESE WINDS WILL ALSO BRING A VERY DRY AIR MASS TO SOUTHERN CALIFORNIA...WHICH WILL RESULT IN WIDESPREAD HUMIDITIES BELOW 10 PERCENT BY LATE WEDNESDAY OR THURSDAY LASTING THROUGH THE END OF THE WEEK. 


Timing: RED FLAG WARNING IN EFFECT FROM 3 PM WEDNESDAY TO 3 PM PDT THURSDAY FOR GUSTY OFFSHORE WINDS AND VERY LOW RELATIVE HUMIDITY...


 WHILE THIS WARNING IS IN EFFECT FOR ONLY THE MOUNTAINS...
 HEIGHTENED FIRE WEATHER CONCERNS WILL EXIST FOR THE VALLEYS OF LOS ANGELES AND VENTURA COUNTIES AS WELL ESPECIALLY THE SANTA CLARITA AND EASTERN VENTURA VALLEYS WHICH MAY APPROACH RED FLAG CRITERIA


 WINDS: AREAS OF NORTHEAST WINDS 15 TO 30 MPH WITH GUSTS TO 40 MPH ARE EXPECTED LATE WEDNESDAY MORNING THROUGH EARLY THURSDAY AFTERNOON. ISOLATED GUSTS TO 50 MPH ARE POSSIBLE THROUGH FAVORED PASSES AND CANYONS. 


 RELATIVE HUMIDITY: EXPECTED TO FALL TO BELOW 10 PERCENT LATER WEDNESDAY AFTERNOON AND CONTINUE INTO THE WEEKEND. OVERNIGHT RECOVERIES ARE EXPECTED TO BE VERY POOR...WITH MOST HUMIDITIES STAYING UNDER 20 PERCENT.  * IMPACTS... IF FIRE IGNITION OCCURS... THERE COULD BE RAPID SPREAD OF WILDFIRE THAT WOULD LEAD TO A THREAT TO LIFE AND PROPERTY. PRECAUTIONARY/PREPAREDNESS ACTIONS... &&

Instruction:
A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS WILL OCCUR WITHIN THE NEXT 24 HOURS. THE COMBINATION OF GUSTY WINDS AND VERY LOW HUMIDITY...AS WELL AS DRY FUEL CONDITIONS... IS EXPECTED TO CREATE CRITICAL FIRE WEATHER CONDITIONS FOR 6 HOURS OR MORE...WHICH COULD RESULT IN EXTREME FIRE BEHAVIOR.

Area:  VENTURA COUNTY MOUNTAINS / LOS PADRES NATIONAL FOREST-LOS ANGELES COUNTY MOUNTAINS / ANGELES NATIONAL FOREST-

Affected Counties or parts of: Santa Barbara, Ventura, San Luis Obispo, Los Angeles

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    ****REMINDER**** Every fire has the ability to be catastrophic. The wildland fire management environment has profoundly changed. Growing numbers of communities, across the nation, are experiencing longer fire seasons; more frequent, bigger, and more severe, fires are a real threat. Be careful with all campfires and equipment.
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