Wednesday, December 29, 2010

[californiadisasters] [EDIS] SoCal WX Bulletin: Widespread Damaging Winds Likely



A FAST MOVING FRONTAL SYSTEM EARLIER TODAY HAS SHIFTED WELL EAST  OF THE AREA. BEHIND THE FRONT... POWERFUL NORTHWEST WINDS HAVE BEGUN  TO DEVELOP ACROSS THE REGION... AND WILL CONTINUE TO INCREASE IN AREAL COVERAGE AND INTENSITY DURING THE NEXT FEW HOURS. BY LATE THIS AFTERNOON THROUGH THURSDAY MORNING...A WIDESPREAD AND DAMAGING NORTHWEST TO NORTH WIND EVENT IS EXPECTED ACROSS  SOUTHERN CALIFORNIA. STRONG WINDS IN THE UPPER ATMOSPHERE WILL BE  FORCED TOWARD THE SURFACE BY VERY COLD AIR BEING TRANSPORTED INTO THE REGION. THE STRONGEST WINDS ARE EXPECTED TO OCCUR IN THE MOUNTAINS...  INCLUDING THE INTERSTATE 5 CORRIDOR AND THE PASSES AND CANYONS OF THE SANTA YNEZ RANGE...WHERE GUSTS OVER 75 MPH ARE LIKELY. THE COMBINATION OF VERY STRONG WINDS...BLOWING SNOW...AND ICE WILL  LIKELY CAUSE TREACHEROUS DRIVING CONDITIONS ACROSS THE INTERSTATE 5 CORRIDOR NEAR THE GRAPEVINE. A WINTER STORM WARNING REMAINS IN EFFECT FOR THE MOUNTAINS OF LOS ANGELES AND VENTURA COUNTIES.  HIGH WIND WARNINGS ARE ALSO IN EFFECT FOR THE SANTA BARBARA SOUTH COAST...ANTELOPE VALLEY...SANTA MONICA MOUNTAINS...AND THE VALLEYS OF VENTURA AND LOS ANGELES COUNTIES...WHERE DAMAGING GUSTS UP TO 65 MPH ARE EXPECTED. WIND ADVISORIES BLANKET THE REMAINDER OF SOUTHERN CALIFORNIA WHERE GUSTS BETWEEN 40 AND 50 MPH WILL BE COMMON. THIS EVENT HAS  THE POTENTIAL TO BE ONE OF THE MOST WIDESPREAD AND STRONGEST WIND EPISODES IN RECENT YEARS. WITH THE GROUND RAIN-SOAKED BY RECENT STORMS...THERE LIKELY WILL BE WIDESPREAD DOWNED TREES ACROSS THE  REGION. IN ADDITION... THERE WILL ALSO BE THE POTENTIAL FOR DOWNED POWER LINES AND WIDESPREAD POWER OUTAGES.  ... HIGH WIND WARNING REMAINS IN EFFECT UNTIL NOON PST THURSDAY... A HIGH WIND WARNING REMAINS IN EFFECT UNTIL NOON PST THURSDAY. * TIMING: DAMAGING WINDS LIKELY LATE THIS AFTERNOON THROUGH THURSDAY MORNING. * WINDS: NORTHWEST TO NORTH WINDS WILL INCREASE TO 35 TO 50 MPH WITH DAMAGING GUSTS OVER 75 MPH...STRONGEST THROUGH PASSES AND  CANYONS OF THE SANTA YNEZ RANGE. WINDS WILL CONTINUE AT THESE SPEEDS THROUGH THURSDAY MORNING...THEN WILL SLOWLY DIMINISH. * IMPACTS: WITH THE SOIL LOOSENED BY RECENT HEAVY RAINS...TREES WILL BE MORE EASILY UPROOTED BY THE STRONG WINDS. THE VERY STRONG WINDS WILL BE CAPABLE OF PRODUCING DOWNED POWER LINES AND CAUSING POWER OUTAGES. PRECAUTIONARY/PREPAREDNESS ACTIONS... &&

Instruction:
 A HIGH WIND WARNING MEANS THAT WINDS ARE IN EXCESS OF 40 MPH WITH POSSIBLE GUSTS GREATER THAN 60 MPH. BE ALERT FOR FLYING DEBRIS.  IF ON THE ROAD... KEEP EYES OPEN FOR FALLEN TREES AND DOWNED POWER  LINES. SECURE ALL DOORS AND WINDOWS AND STAY INDOORS IF POSSIBLE.

Area:  SANTA BARBARA COUNTY MOUNTAINS-INCLUDING... SAN MARCOS PASS... SAN RAFAEL WILDERNESS AREA... DICK SMITH WILDERNESS AREA

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

Sent: 2010-12-29T15:26:12-08:00

Original Sender: KLOX@nwws.oes.ca.gov

From: NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA




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