A strong northwest to north wind event affected the mountains of Ventura and Los Angeles counties as well as the Antelope Valley. In the mountains, northerly wind gusts to 77 MPH were reported while across the Antelope Valley sustained northwesterly winds of 45 MPH were reported.
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.
A strong northwest to north wind event affected the mountains of Ventura and Los Angeles counties as well as the Antelope Valley. In the mountains, northerly wind gusts to 77 MPH were reported while across the Antelope Valley sustained northwesterly winds of 45 MPH were reported.
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 9, 9:50 AM PST, 26 minutes earlier.
SOUTHWEST CALIFORNIA AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 950 AM PST TUE MAR 9 2010 .SYNOPSIS... A STRONG SURFACE GRADIENT DEVELOPING IN THE WAKE OF YESTERDAYS STORM SYSTEM WILL BRING WINDY CONDITIONS TO THE AREA THROUGH WEDNESDAY NIGHT. A WARMING TREND IS EXPECTED FOR LATE WEEK...BUT A COOLING TREND IS POSSIBLE OVER THE WEEKEND. && .SHORT TERM (TODAY-THU)... SHOWERS HAVE WEAKENED THIS MORNING...AND OTHER THAN THE CONTINUED SLIGHT CHANCE ON THE FAR NORTHERN MTN SLOPES...REST OF TODAY SHOULD BE DRY. WINDS ARE PICKING UP...AND BREEZY CONDITIONS ARE ALREADY BEING FELT OVER MUCH OF THE AREA. STILL LOOKS LIKE THE WINDIEST CONDITIONS WILL BE OVER THE LA/VTU MTNS AND THE ANTELOPE VALLEY...BUT DELAYED THE ONSET OF THE PREVIOUS WARNING A COUPLE OF HOURS. REST OF THE ADVISORIES LOOK GOOD...AND WENT AHEAD AND ADDED SRN SBA COUNTY BACK INTO THE MIX. THEY AGAIN WILL HAVE A THREAT OF WARNING LEVEL WINDS TONIGHT...WITH REALLY ONLY MONTECITO WITH A LEGITIMATE SHOT. MAY END UP ADDING ALL COASTAL AREAS TO THE WIND ADVISORY MIX TODAY...AND POSSIBILIY THE SAN FERNANDO VALLEY AND SANTA MONICA RANGE...BUT WILL WAIT A FEW HOURS TO SEE HOW THINGS DEVELOP. REST OF THE FORECAST ON TRACK FOR TODAY...WITH RATHER COOL TEMPS WITH THE COLD AIRMASS BEHIND OUR SYSTEM FRMO LAST NIGHT...DESPITE THE CLEARER SKIES. ***FROM PREVIOUS DISCUSSION*** ANOTHER WEAK FRONT MOVES THROUGH THE AREA LATE TONIGHT AND EARLY WEDNESDAY. IT WILL ONLY BRING A SLIGHT CHANCE OF SHOWERS TO THE CENTRAL COAST AND THE NORTH SLOPES. WHAT IT WILL DO...HOWEVER...IS GIVE A REINFORCING BLAST OF COLD AIR ADVECTION TO THE AREA WHICH WILL KEEP THE WINDS HOWLING. WHILE THE WARNING LEVEL WINDS MIGHT DIP A LITTLE WEDNESDAY MORNING AND AFTERNOON THEY WILL START UP AGAIN LATER WEDNESDAY AFTERNOON AND AS A RESULT THE WARNINGS WILL END EARLY THURSDAY MORNING. THE WINDS MAY BE A LITTLE MORE WIDESPREAD AND ADVISORIES MAY BE NEEDED FOR MORE OF THE AREA WEDNESDAY LATE AFTERNOON AND EVENING AND WARNING LEVEL GUSTS MAY BE POSSIBLE THROUGH THE SBA MTNS AND BELOW THE PASSES AND CANYONS OF THE SBA SOUTH COAST. DUE TO THE NEW BATCH OF COLD AIR MAX TEMPS WEDNESDAYS WILL REMAIN 5 TO 10 DEGREES BELOW NORMAL. WEDNESDAY NIGHT WILL BE A VERY TRICKY FORECAST. THE WINDS WILL SLOWLY SHIFT FROM THE NORTH TO THE NORTHEAST. IN ADDITION THE GRADIENTS WILL WEAKEN. FIGURING OUT THE TIMES THE NORTH WIND SUSCEPTIBLE AREA SHUT OFF AND WHEN THE NORTHEAST FAVORED LOCATIONS SWITCH ON WILL BE TOUGH. ALSO WITH THE VERY COLD AIR MASS IN PLACE AND CLEAR SKIES ABOVE...ANY LOCATION THAT HAS CALM WINDS FOR AN EXTENDED PERIOD OF TIME WILL HAVE VERY COLD OVERNIGHT LOWS. SOME COMPUTER MDLS SHOW FREEZING TEMPS IN THE INLAND COASTAL AREAS AND VLYS...THIS IS PROBABLY OVER DONE BUT IT WILL HAVE TO BE MONITORED. IN A 180 DEGREE TURN ABOUT THURSDAY WILL BE VERY NICE AS A RIDGE BUILDS IN AND OFFSHORE FLOW DEVELOPS. HGTS SOAR TO 568DM AND WITH OFFSHORE FLOW AND SUNNY SKIES LOOK FOR COASTAL AND VLY TEMPS TO FINALLY REACH SEASONAL NORMALS. .LONG TERM (FRI-MON)... FRIDAY WILL BE THE NICEST DAY OF THE WEEK WITH PLENTY OF SUNSHINE...WEAK OFFSHORE FLOW AND COASTAL AND VLY HIGHS IN THE LOWER TO MID 70S. BOTH GFS AND EC BRING A WEAK TROF THROUGH THE AREA LATE FRIDAY AND EARLY SATURDAY. DOUBT THIS SYSTEM WILL BRING ANY RAIN TO THE AREA THE GFS IS DRY AND THE EC ONLY FCSTS A FEW SHOWERS. IT WILL KNOCK THE RIDGE DOWN AND SWITCH THE LOW LEVEL FLOW TO ONSHORE AND THIS WILL LOWER TEMPS ABOUT 5 DEGREES FROM FRIDAYS WARM VALUES. SUNDAY WILL BE A LITTLE WARMER AS THE RIDGE BEGINS TO REESTABLISH ITSELF. AND BY MONDAY IT SHOULD BE WARM AGAIN AS A 580 DM RIDGE BUILDS BACK INTO THE AREA ACCOMPANIED BY A LITTLE OFFSHORE FLOW. && .AVIATION... 09/1100Z. STRONG POST FRONTAL WINDS HAVE DEVELOPED IN THE WAKE OF A WEAK COLD FRONT THESE WINDS WILL PERSIST THROUGH THE PERIOD. MDT ISOLATED SVR TURBC WILL OCCUR OVER AND AROUND THE MTNS. KLAX...VERY GOOD CONFIDENCE IN TAF. FCST WIND CHANGES MAY OCCUR +/- 1 HOUR OF TAF TIME. KBUR...FAIR CONFIDENCE IN TAF. START OF THE NORTH WINDS COULD OCCUR ANYTIME FROM 12Z TO 14Z. AFTER 12Z LGT WINDS AT THE SURFACE WILL BE A GOOD INDICATION OF MDT WIND SHEAR ALOFT FROM 008-015 AGL. AFT 15Z LGT-MDT TURBC SFC-120. ***NOTE*** THE ASOS EQUIPMENT AT KBUR...KVNY...KHHR...KCMA...AND KOXR HAS A SOFTWARE ERROR THAT MAY LEAD TO INCORRECT CLOUD HEIGHTS WHEN THERE ARE TWO OR MORE CLOUD LAYERS PRESENT. OBSERVATIONS AT KBUR WILL BE QUALITY CONTROLLED 24 HOURS A DAY...OBSERVATIONS AT KVNY WILL BE QUALITY CONTROLLED FROM 13Z-07Z...OBSERVATIONS AT KOXR WILL BE QUALITY CONTROLLED FROM 15Z-05Z. TAFS FOR KVNY AND KOXR WILL NOT BE AMENDED FOR CIGS DURING THE TIME THE OBSERVATIONS ARE NOT MONITORED AND THERE ARE TWO OR MORE CLOUD LAYERS PRESENT. && .LOX WATCHES/WARNINGS/ADVISORIES... HIGH WIND WARNING (SEE LAXNPWLOX). WIND ADVISORY (SEE LAXNPWLOX). GALE WARNING (SEE LAXMWWLOX). HIGH SURF ADVISORY (SEE LAXCFWLOX). HIGH RIP CURRENT RISK (SEE LAXSRFLOX). && PUBLIC...KITTELL/RORKE AVIATION...KAPLAN SYNOPSIS...BARTLING/ASR WWW.WEATHER.GOV/LOSANGELES
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 1030 PM PST MON MAR 8 2010 CAZ034>041-044>046-051>054-059-087-088-547-548-091400- 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- 1030 PM PST MON MAR 8 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHWESTERN CALIFORNIA. .DAY ONE... TONIGHT STRONG WINDS WILL CREATE HAZARDS FOR MOTORISTS DRIVING THE MOUNTAINS OVERNIGHT. HIGHER THAN NORMAL SURF AS WELL AS AN ELEVATED RISK OF RIP CURRENTS WILL CREATE HAZARDS FOR BEACHGOERS TODAY. GALE FORCE WINDS ACROSS THE OUTER WATERS WILL CREATE HAZARDS FOR SMALL CRAFT. * 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 SURF ADVISORY.........SEE WHUS46 KLOX - CFWLOX FOR DETAILS * * HIGH RIP CURRENT RISK......SEE FZUS56 KLOX - SRFLOX FOR DETAILS * .DAYS TWO THROUGH SEVEN... TUESDAY THROUGH SUNDAY ON TUESDAY...HIGHER THAN NORMAL SURF AS WELL AS AN ELEVATED RISK OF RIP CURRENTS WILL CREATE HAZARDS FOR BEACHGOERS TODAY. GALE FORCE WINDS ACROSS THE OUTER WATERS WILL CREATE HAZARDS FOR SMALL CRAFT. STRONG NORTHERLY WINDS WILL CREATE LOCAL HAZARDS THROUGH AND BELOW PASSES AND CANYONS AND ACROSS THE DESERTS. * HIGH WIND WARNING..........SEE WWUS76 KLOX - NPWLOX FOR DETAILS * * HIGH WIND WATCH............SEE WWUS76 KLOX - NPWLOX FOR DETAILS * * WIND ADVISORY..............SEE WWUS76 KLOX - NPWLOX FOR DETAILS * * GALE WARNING...............SEE WHUS76 KLOX - MWWLOX FOR DETAILS * * HIGH SURF ADVISORY.........SEE WHUS46 KLOX - CFWLOX FOR DETAILS * * GALE WATCH...............SEE WHUS76 KLOX - MWWLOX FOR DETAILS * .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. RORKE
3 high wind. Local standard time, as filed.
Strong west to northwest winds developed across the Antelope Valley. The ASOS sensor at Lancaster reported sustained winds between 41 and 45 MPH.
Strong northwest to north winds were reported in the Los Angeles county mountains through the Interstate 5 corridor. The RAWS sensor at Whitaker Peak reported wind gusts as high as 77 MPH while the RAWS sensor at Warm Springs reported wind gusts to 59 MPH.
Strong northwest to north winds were reported in the Ventura county mountains. Wind reports across the area indicated wind gusts between 60 and 77 MPH in some spots.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2010Every state in 2010This day in weather historyWarnings in California, March 2010
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: 214835, 214836, 214837.