High wind advisory

National Weather Service High Wind Warning

WWUS76 KLOX 291920 NPWLOX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 1120 AM PST WED DEC 29 2010 ...WIDESPREAD DAMAGING WINDS LIKELY ACROSS SOUTHWESTERN CALIFORNIA LATER THIS AFTERNOON THROUGH THURSDAY MORNING... .A FAST MOVING FRONTAL SYSTEM HAS ALREADY EXITED LOS ANGELES COUNTY LATE THIS MORNING. BEHIND THE FRONT...WINDS WILL SHIFT TO THE NORTHWEST AND INCREASE IN AREAL COVERAGE AND INTENSITY THROUGH THE DAY. 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. CAZ044-045-300200- /O.UPG.KLOX.WI.Y.0079.101229T2300Z-101230T2000Z/ /O.EXA.KLOX.HW.W.0016.101229T2300Z-101230T2000Z/ VENTURA COUNTY INTERIOR VALLEYS-VENTURA COUNTY COASTAL VALLEYS- INCLUDING...SANTA PAULA...FILLMORE...OJAI...PIRU... THOUSAND OAKS...NEWBURY PARK...MOORPARK...SIMI VALLEY 1120 AM PST WED DEC 29 2010 ...HIGH WIND WARNING IN EFFECT FROM 3 PM THIS AFTERNOON TO NOON PST THURSDAY... THE NATIONAL WEATHER SERVICE IN LOS ANGELES/OXNARD HAS ISSUED A HIGH WIND WARNING...WHICH IS IN EFFECT FROM 3 PM THIS AFTERNOON TO NOON PST THURSDAY. THE WIND ADVISORY IS NO LONGER IN EFFECT. * TIMING: GUSTY NORTHWEST WINDS WILL DEVELOP THIS AFTERNOON...WITH DAMAGING NORTHERLY WINDS LIKELY TONIGHT THROUGH THURSDAY MORNING. * WINDS: WEST TO NORTHWEST WINDS 15 TO 25 MPH WITH GUSTS TO 40 MPH ARE EXPECTED TO DEVELOP THIS AFTERNOON. WINDS WILL BECOME NORTH 25 TO 40 MPH WITH DAMAGING GUSTS TO 60 MPH TONIGHT...CONTINUING INTO THURSDAY MORNING. THE STRONGEST WINDS WILL IMPACT THE TYPICAL NORTH-SOUTH PASSES AND CANYONS...AS WELL AS THE OJAI- LAKE CASITAS AREA. * 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... 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.