Strong northwest to north winds developed across sections of Southwestern California. The strongest winds occurred in the mountains of Los Angeles and Ventura counties, the Antelope Valley and the Santa Clarita Valley.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS LOX wrote it up.
Strong northwest to north winds developed across sections of Southwestern California. The strongest winds occurred in the mountains of Los Angeles and Ventura counties, the Antelope Valley and the Santa Clarita Valley. Sustained winds as high as 59 MPH were reported along with gusts as high as 76 MPH.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Los Angeles, CA wrote its last area forecast discussion before the first event at Mar 7, 9:10 AM PST, 1 hour 34 minutes earlier.
SOUTHWEST CALIFORNIA AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 910 AM PST MON MAR 7 2011 UPDATED AVIATION SECTION .SYNOPSIS... IT WILL BECOME VERY WINDY TODAY THROUGH EARLY TUESDAY MORNING. THERE WILL BE A WARMING TREND TUESDAY THROUGH THURSDAY AND THEN COOLER WITH A RETURN OF THE MARINE LAYER TOWARDS THE END OF THE WEEK INTO THE WEEKEND. && .SHORT TERM (TODAY-TUE)...FRONT HAS MOVED THROUGH THE AREA LEAVING BEHIND CLEARING SKIES AND GUSTY WEST TO NORTHWEST WINDS. 12Z MODELS SUGGESTED LITTLE CHANGE TO THE FORECAST THIS WEEK AND I EXPECT THE AFTERNOON FORECAST WILL LOOK VERY SIMILAR TO THE CURRENT FORECAST. ***FROM PREVIOUS DISCUSSION*** THE BIG STORY OF THE DAY IS THE WINDS. WEST WINDS FIRST AS COLD AIR BEHIND THE POST-FRONTAL TROF WILL ALIGN WITH THE WESTERLY SFC PRESSURE PATTERN. IT WILL BRING ADVISORY LEVEL WINDS TO ALL OF SLO AND SBA COUNTIES AS WELL AS THE CSTS AND VLYS OF VTA COUNTY AND THE LA COUNTY COAST. STRONG WESTERLY FLOW AT 850 MB WILL BRING WARNING LEVEL GUSTS TO THE MTNS OF VTA AND LA COUNTY AS WELL AS THE ANTELOPE VLY WHERE A STANDING WAVES WILL VERY LIKELY BRING 60 MPH GUSTS TO AREA IN AND AROUND THE FOOTHILLS. THE WINDS GET MORE INTERESTING TONIGHT AS THE UPPER SUPPORT...THE LOW LEVEL SUPPORT...THE THERMAL ADVECTION ALL SHIFT TO THE NORTH AND A NICE BLOB OF SUBSIDENCE MOVES OVER THE AREA. WARNING LEVEL GUSTS WILL VERY LIKELY DEVELOP IN THE MTNS OF VTA/LA COUNTY AFFECTING THE I-5 CORRIDOR. THESE WARNING LEVEL WIND GUSTS WILL THEN SPILL INTO THE SANTA CLARITA VLY AND THE ANTELOPE VLY. ALL OF THE MDLS SHOW THAT THIS WILL BE A FAIRLY RARE EVENT THAT WILL BRING STRONG WINDS TO THE OJAI VLY. IN FACT THE OJAI VLY MAY NEED ITS ADVISORY UPGRADED TO A WARNING FOR THIS EVENING AS 60 MPH GUTS ARE NOT OUT OF THE QUESTION. THE WINDS WILL THEN MOVE WESTWARD AND SET UP A VERY NICE SUNDOWNER AND EXPECT TO SEE 60 TO 60 MPH GUSTS THROUGH AND BELOW THE PASSES OF THE SANTA YNEZ RANGE. THE MONTECITO AREA WILL BE THE FOCUS OF THE STRONGEST WINDS. THE WINDS WILL END ACROSS SLO AND SBA COUNTY (SAVE THE SBA MTNS AND SOUTH COAST) THIS AFTERNOON. THE STRONGEST WINDS WILL DIMINISH ACROSS THE ANTELOPE VLY THIS EVENING WHILE THE REST OF THE WINDS WILL LAST TO AT LEAST DAWN AND PERHAPS MID MORNING TUESDAY. ONE AREA LEFT OUT OF THE WIND PACKAGE TONIGHT IS THE MALIBU COAST WHERE IT WILL BE BREEZY BELOW PASSES AND CANYONS LATER THIS AFTERNOON AND OVERNIGHT. A WIND ADVISORY MAY BE NEEDED HERE AFTER THE WIND ADVISORY FOR WEST WINDS FOR THE ENTIRE COAST EXPIRES THIS AFTERNOON. IT WILL BE COOLER TODAY WITH THKNS FALLING TO 550 DM LOOK FOR MOST CSTL AND VLY HIGHS TO BE IN THE UPPER 50S TO MID 60S. LOWS TONIGHT WILL BE ALL OVER THE MAP WITH WINDY AREAS STAYING MUCH WARMER THAN THE WIND SHELTERED AREAS WHICH WILL BE QUITE CHILLY. THICKNESSES BUMP UP NICELY TUESDAY AND THE FLOW SHIFTS OFFSHORE BOTH OF WHICH WILL COMBINE TO CREATE ABOUT A 10 DEGREE JUMP IN MAX TEMPS FROM TODAYS READINGS. .LONG TERM (WED-SUN)... EC AND THE GFS AGREE THAT WED AND THU WILL BE VERY NICE DAYS WITH A LARGE UPPER HIGH IN CONTROL OF THE WEATHER. WEDNESDAY WILL BE THE WARMEST DAY OF THE WEEK WITH A LITTLE COOLING ON THURSDAY AS THE RIDGE FLATTENS AND THE OFFSHORE FLOW WEAKENS. WEAK TROFING SETS UP FRIDAY THROUGH SUNDAY. NIGHT THROUGH MORNING LOW CLOUDS WILL BECOME LIKELY FOR THE CSTS AND LOWER VLYS. THERE WILL BE A COOLING TREND THROUGH THE PERIOD WITH THE ONSHORE FLOW AND SLOWLY LOWERING HGTS. && .AVIATION...07/1155Z. WDSPRD IFR TO MVFR CONDITIONS ACROSS THE REGION THIS MORNING SHOULD LATER THIS MORNING AS STRONG AND GUSTY W TO NW WINDS DEVELOP ACROSS THE REGION IN THE WAKE OF THE DEPARTING FRONT. WINDS WILL BE AN ISSUE AT MOST AIRPORTS THRU TONIGHT...WITH THE STRONGEST WINDS AT KWJF AND KPMD. THERE WILL LIKELY BE SOME WIND SHEAR AT KLAX AND KSBA THIS EVENING. SKIES SHOULD REMAIN VFR ONCE CIGS CLEAR OUT LATER THIS MORNING. KLAX...MODERATE CONFIDENCE IN TAF. THERE IS A 20 TO 30 PERCENT CHANCE THAT CIGS COULD CLEAR AS EARLY AS 16 OR 17Z. STRONG AND GUSTY W TO NW WINDS ARE LIKELY THRU THIS EVENING...AND THERE IS A GOOD CHANCE OF SOME LLWS THIS EVENING AS STRONG NLY WINDS DEVELOP ABOVE 1000 FT. KBUR...MODERATE CONFIDENCE IN TAF. THERE IS A 20 TO 30 PERCENT CHANCE THAT CIGS COULD CLEAR AS EARLY AS 16 OR 17Z. THERE IS A 30 TO 40 PERCENT CHANCE OF LLWS FROM 18Z TODAY THROUGH 06Z TUE. && .LOX WATCHES/WARNINGS/ADVISORIES... HIGH WIND WARNING (SEE LAXNPWLOX). WIND ADVISORY (SEE LAXNPWLOX). GALE WARNING (SEE LAXMWWLOX). SMALL CRAFT ADVISORY (SEE LAXMWWLOX). HIGH RIP CURRENT RISK (SEE LAXSRFLOX). && PUBLIC...WOFFORD/RORKE AVIATION...BRUNO SYNOPSIS...WOFFORD WWW.WEATHER.GOV/LOSANGELES
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 600 AM PST MON MAR 7 2011 CAZ034>041-044>046-051>054-059-087-088-547-548-081400- SAN LUIS OBISPO COUNTY CENTRAL COAST- SANTA BARBARA COUNTY CENTRAL COAST-SANTA YNEZ VALLEY- SAN LUIS OBISPO COUNTY INTERIOR VALLEYS-CUYAMA VALLEY- SANTA BARBARA COUNTY SOUTH COAST-VENTURA COUNTY COAST- LOS ANGELES COUNTY COAST INCLUDING DOWNTOWN LOS ANGELES- VENTURA COUNTY INTERIOR VALLEYS-VENTURA COUNTY COASTAL VALLEYS- SANTA MONICA MOUNTAINS RECREATIONAL AREA- SAN LUIS OBISPO COUNTY MOUNTAINS- SANTA BARBARA COUNTY MOUNTAINS-VENTURA COUNTY MOUNTAINS- LOS ANGELES COUNTY MOUNTAINS EXCLUDING THE SANTA MONICA RANGE- ANTELOPE VALLEY-CATALINA ISLAND-SANTA CLARITA VALLEY- LOS ANGELES COUNTY SAN FERNANDO VALLEY- LOS ANGELES COUNTY SAN GABRIEL VALLEY- 600 AM PST MON MAR 7 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHWESTERN CALIFORNIA. .DAY ONE... TODAY VERY WINDY CONDITIONS WILL CREATE MANY HAZARDS TODAY AND TONIGHT. ALMOST ALL OF THE AREA WILL SEE WEST TO NORTHWEST WIND GUSTS BETWEEN 35 AND 45 MPH TODAY. THE MOUNTAINS AND THE ANTELOPE VALLEY WILL SEE WIND GUSTS TO 60 MPH. OVERNIGHT THE WINDS WILL TURN NORTH AND THE MOUNTAINS...THE SANTA CLARITA VALLEY...AND THE SANTA BARBARA SOUTH COAST WILL SEE WIND GUSTS 60 MPH AND GREATER. BEACHGOERS WILL FACE DANGEROUS RIP CURRENTS AND BOATS WILL FACE GALE FORCE WINDS ACROSS BOTH THE INNER AND OUTER WATERS. * HIGH WIND WARNING..........SEE WWUS76 KLOX - NPWLOX FOR DETAILS * * WIND ADVISORY..............SEE WWUS76 KLOX - NPWLOX FOR DETAILS * * GALE WARNING...............SEE WHUS76 KLOX - MWWLOX FOR DETAILS * * HIGH RIP CURRENT RISK......SEE FZUS56 KLOX - SRFLOX FOR DETAILS * .DAYS TWO THROUGH SEVEN... TUESDAY THROUGH SUNDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. RORKE
The national radar mosaic for the moment the first event began.
4 high wind. Local standard time, as filed.
Strong and gusty west to northwest winds developed across the Antelope Valley. The Poppy Park RAWS sensor reported wind gusts to 59 MPH. The ASOS sensors at Lancaster and Palmdale reported sustained winds between 40 and 59 MPH with gusts between 59 and 68 MPH.
Strong and gusty northwest winds developed across the Santa Clarita Valley. The RAWS sensor at Saugus reported wind gusts between 58 and 71 MPH.
Strong and gusty northwest to north winds developed across the mountains of Los Angeles county. The RAWS sensor at Camp Nine reported sustained winds between 44 and 56 MPH with gusts between 63 and 76 MPH. The ASOS at Sandberg reported sustained winds between 46 and 56 MPH with gusts between 58 and 64 MPH. The RAWS sensor at Warm Springs reported wind gusts between 59 and 63 MPH.
Strong and gusty northwest to north winds developed across the mountains of Ventura County. The strongest winds occurred near the Interstate 5 corridor (northeastern Ventura County) with wind gusts over 60 MPH reported.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2011Every state in 2011This day in weather historyWarnings in California, March 2011
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 288812, 288813, 288809, 288810.