Strong and gusty northwest to north winds developed across sections of Southwestern California. The strongest northwest winds developed across the Antelope Valley with gusts at high as 67 MPH 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.
Strong and gusty northwest to north winds developed across sections of Southwestern California. The strongest northwest winds developed across the Antelope Valley with gusts at high as 67 MPH reported. Strong north winds developed across the Santa Ynez Range (in Santa Barbara County) with sustained winds of 40 MPH 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 Apr 25, 9:30 PM PST, 30 minutes earlier.
SOUTHWEST CALIFORNIA AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 1030 PM PDT MON APR 25 2011 ...UPDATED AVIATION DISCUSSION... .SYNOPSIS... OFFSHORE FLOW DEVELOPING BENEATH STRONG HIGH PRESSURE ALOFT WILL BRING A WARMING TREND WITH GUSTY AND POTENTIALLY DAMAGING OFFSHORE WINDS THROUGH TUESDAY. A WEAK LOW PRESSURE SYSTEM WILL FOLLOW FOR LATE WEEK...BRINGING COOLING TEMPERATURES. A WARMING TREND SHOULD ESTABLISH EARLY NEXT WEEK AS ANOTHER HIGH PRESSURE SYSTEM BUILDS INTO THE AREA. && .UPDATE... OFFSHORE NORTHERLY GRADIENTS ARE ESTABLISHING THIS EVENING AS A WEAKENING FRONT MOVES OVER THE AREA. THERMAL SUPPORT FOR THE WIND EVENT IS RAMPING UP THIS EVENING AS THERMAL GRADIENTS CONTINUE TO TIGHTEN. KSBA-KSMX SURFACE PRESSURE GRADIENTS SURGED TO NEAR -5.4 MB THIS EVENING AND SOME STRONG WINDS DID DEVELOP ACROSS SOUTHERN SANTA BARBARA COUNTY THIS EVENING. SUSTAINED WINDS AT LAS FLORES CANYON INCREASED TO AROUND 40 MPH FOR MOST OF THE EVENING...WITH GUSTS LIKELY HITTING THE DAMAGING LEVELS. WITH THE THERMAL AND SURFACE PRESSURE GRADIENTS STILL DEVELOPING TONIGHT...THE STRONGEST WINDS STILL HAVE YET TO DEVELOP. GUSTY NORTHWEST TO NORTH WINDS WILL CONTINUE TO INCREASE THROUGHOUT TONIGHT...WITH DAMAGING LEVEL WINDS GUSTS IN EXCESS OF 60 MPH LIKELY OCCURRING BETWEEN 1 AM AND 8 AM TUESDAY MORNING. ALL HEADLINES WILL REMAIN INTACT FOR NOW...BUT A MENTION OF ISOLATED GUSTS WILL BE ADDED FOR THE SANTA MONICA RANGE. A FEW TWEAKS TO TEMPERATURES WILL ALSO BE MADE TO THE AREA FOR TUESDAY TO ACCOUNT FOR WINDS AND MIXING...BUT IN GENERAL...A WARMING TREND SHOULD GAIN HOLD OVER THE AREA ON TUESDAY. && .PREV DISCUSSION... SHORT TERM...WEAK COLD FRONT CONTINUES TO WASH OUT ACROSS MONTEREY COUNTY WITH ONLY A FEW SPRINKLES REMAINING ON RADAR TO OUR NORTH. CLOUDS HAVE HAD A HARD TIME HOLDING TOGETHER ACROSS THE CENTRAL COAST AND MOST AREAS HAVE HAD A MOSTLY SUNNY DAY DESPITE THIS SYSTEM DROPPING SOUTHWARD. CLOUDS ARE RAPIDLY THICKENING ACROSS KERN COUNTY AND ADJACENT AREAS OF SANTA BARBARA AND SAN LUIS OBISPO COUNTIES. EXPECT MANY AREAS TO BE MOSTLY CLOUDY THIS EVENING AS THE REMAINING MOISTURE MOVES THROUGH THE REGION. THE NORTH SLOPES OF THE MOUNTAINS MAY SQUEEZE OUT A HUNDREDTH OF TWO OF DRIZZLE OVERNIGHT. NORTHWEST TO NORTH WINDS ARE THE MAIN CONCERN OVER THE NEXT 24-36 HOURS. SPEEDS HAVE INCREASED ACROSS THE DESERTS AND ANTELOPE VALLEY EARLY THIS AFTERNOON WITH GUSTS AS HIGH AS 59 MPH NEAR EDWARDS AFB. ONSHORE PRESSURE GRADIENTS PUSHING 6MB NOW FROM LAX-DAG AND EXPECT NORTHERLY GRADIENTS TO STRENGTHEN OVERNIGHT AS HIGHER PRESSURE BUILDS IN FROM THE NORTH. ALL WIND ADVISORIES AND WARNINGS LOOK REASONABLE AND WILL CONTINUE THESE THROUGH TUESDAY AFTERNOON. LOOKS LIKE GRADIENTS MAY BE STRONG ENOUGH TO EXTEND SOME OF THE WIND HIGHLIGHTS ACROSS THE MOUNTAINS AND ANTELOPE VALLEY THROUGH TUESDAY EVENING. WINDS TURN MORE NORTHEASTERLY TUESDAY NIGHT INTO WEDNESDAY WITH DOWNSLOPE WARMING ON TAP FOR OUR WARMEST DAY OF THE WEEK. CURRENT FORECASTS GOING 10+ DEGREES OVER MODEL GUIDANCE AND THIS LOOKS GOOD EXCEPT FOR A POTENTIAL WEAK INVERSION AT SOME BEACHES WHICH MIGHT DEFLECT THE WARMEST AIR FROM REACHING THE SURFACE. HEIGHTS FLATTEN OUT WEDNESDAY NIGHT INTO THURSDAY AS ANOTHER STORM SYSTEM SLIDES ACROSS NORTHERN CALIFORNIA. ONSHORE FLOW AND COOLING ALOFT WILL LEAD TO MUCH COOLER TEMPERATURES AND SEA BREEZE CONDITIONS FOR ALL AREAS...ALTHOUGH INLAND VALLEYS AND THE ANTELOPE VALLEY WILL BE SLOWEST TO COOL SO LEFT TEMPERATURES IN THE 80S. LONG TERM...MEDIUM RANGE MODELS IN GOOD AGREEMENT FOR THE WEEKEND FORECAST. LOOKS COOL AND BREEZY FOR FRIDAY AS A LOW PRESSURE SYSTEM SLIDES ACROSS THE GREAT BASIN AND PUMPS UP NORTH TO NORTHWEST WINDS OVER SOUTHERN CALIFORNIA (AGAIN). TEMPERATURES WILL MODERATE SOME BY SATURDAY AS HIGH PRESSURE SLOWLY BUILDS AND WINDS DECREASE...THEN SUNDAY LOOKS LIKE THE WARMEST DAY AT THIS POINT WITH THE RIDGE AXIS OVERHEAD AND LIGHT OFFSHORE WINDS. && .AVIATION...26/0530Z. OTHER THAN SOME LINGERING STRATUS ACROSS THE CENTRAL COAST AND ALONG THE NORTH SLOPES...VFR CONDS ARE EXPECTED THROUGH THE PERIOD. BIG ISSUE WILL BE WINDS AS STRONG NORTHERLY WINDS DEVELOP TONIGHT. THERE WILL BE LLWS AND TURBULENCE ISSUES AT KVNY/KBUR AND MOUNTAIN PASSES AND EVEN POTENTIALLY AT KLAX. KLAX...HIGH CONFIDENCE IN 06Z TAF. NORTHERLY CROSS WINDS WILL LIKELY DEVELOP TONIGHT...WITH SOME LLWS. KBUR...HIGH CONFIDENCE IN 06Z TAF. LLWS AND TURBULENCE WILL BE ISSUES THROUGH TUESDAY MORNING. && .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...HALL AVIATION...RAT SYNOPSIS...HALL/HOFFER WWW.WEATHER.GOV/LOSANGELES
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 242 PM PDT MON APR 25 2011 CAZ034>041-044>046-051>054-059-087-088-547-548-261300- 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- 242 PM PDT MON APR 25 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHWESTERN CALIFORNIA. .DAY ONE... TODAY GUSTY WEST TO NORTH WINDS WILL DEVELOP ACROSS MUCH OF THE REGION TODAY AND CONTINUE TONIGHT. DAMAGING WIND GUSTS ARE EXPECTED TONIGHT THROUGH AND BELOW PASSES AND CANYONS OF THE SANTA YNEZ RANGE INCLUDING PORTIONS OF THE SOUTH COAST OF SANTA BARBARA COUNTY...THROUGH THE INTERSTATE 5 CORRIDOR...AND IN THE WESTERN FOOTHILLS OF THE ANTELOPE VALLEY. HIGH WIND WARNINGS ARE IN EFFECT FOR THOSE AREAS. ADVISORY LEVEL WINDS ARE EXPECTED IN THE SANTA MONICA MOUNTAINS...AND IN THE VALLEYS OF VENTURA AND LOS ANGELES COUNTIES EXCLUDING THE SAN GABRIEL VALLEY. GALE FORCE WINDS WILL DEVELOP ACROSS MOST OF THE COASTAL WATERS THROUGH TONIGHT. THERE IS A HIGH RIP CURRENT RISK AT THE BEACHES. * 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 GUSTY NORTHWEST TO NORTH WINDS WILL CONTINUE TO AFFECT THE REGION ON TUESDAY. DAMAGING WIND GUSTS ARE EXPECTED THROUGH AND BELOW PASSES AND CANYONS OF THE SANTA YNEZ RANGE INCLUDING PORTIONS OF THE SOUTH COAST OF SANTA BARBARA COUNTY...THROUGH THE INTERSTATE 5 CORRIDOR...AND IN THE WESTERN FOOTHILLS OF THE ANTELOPE VALLEY. LESSER WINDS ARE EXPECTED IN THE SANTA MONICA MOUNTAINS...IN THE VALLEYS OF VENTURA AND LOS ANGELES COUNTIES EXCLUDING THE SAN GABRIEL VALLEY...AND POSSIBLY ON THE CENTRAL COAST AND BELOW PASSES AND CANYONS FROM MALIBU TO HOLLYWOOD. GALE FORCE WINDS WILL CONTINUE ACROSS MUCH OF THE COASTAL WATERS TUESDAY AND TUESDAY EVENING. WINDS WILL TURN MORE NORTHEASTERLY TUESDAY NIGHT AND WEDNESDAY...BUT STILL WILL REMAIN GUSTY...PARTICULARLY ACROSS THE MOUNTAINS AND VALLEYS OF LOS ANGELES AND VENTURA COUNTIES...AND THROUGH THE MONTECITO HILLS AREA IN SOUTHEASTERN SANTA BARBARA COUNTY. A HIGH RIP CURRENT RISK WILL CONTINUE FOR AREA BEACHES. * 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 * .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. BOLDT
3 high wind. Local standard time, as filed.
The RAWS sensor at Las Flores Canyon reported north winds with a sustained speed of 40 MPH.
The RAWS sensor at Las Flores Canyon reported north winds with a sustained speed of 40 MPH.
The ASOS sensor at Lancaster reported west to northwest winds with sustained speeds between 40 and 49 MPH and gusts between 58 and 67 MPH.
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, April 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: 288910, 288911, 288909.