Another round of Santa Ana winds occurred on March 27th as high pressure built in over the Great Basin. No wind damage was reported during this event.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
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 SGX wrote it up.
Another round of Santa Ana winds occurred on March 27th as high pressure built in over the Great Basin. No wind damage was reported during this event.
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 San Diego, CA wrote its last area forecast discussion before the first event at Mar 27, 2:30 AM PST, 4 hours earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN DIEGO CA 330 AM PDT SAT MAR 27 2010 .SYNOPSIS...HIGH PRESSURE AND OFFSHORE FLOW WILL BRING MOSTLY CLEAR SKIES AND WARMER WEATHER THROUGH MONDAY. THE OFFSHORE FLOW WILL BE STRONGEST TODAY WITH LOCAL STRONG GUSTY WINDS THROUGH AND BELOW MOUNTAIN CANYONS AND PASSES. A STORM APPROACHING FROM THE NORTHWEST WILL BRING INCREASING CLOUDINESS AND COOLING WITH A GOOD CHANCE OF SHOWERS WEDNESDAY AND THURSDAY. LOCAL STRONG GUSTY ONSHORE WINDS WILL ACCOMPANY THIS STORM...ESPECIALLY IN THE MOUNTAINS AND DESERTS. && .DISCUSSION...FOR SOUTHWEST CALIFORNIA INCLUDING SAN DIEGO... ORANGE...SOUTHWEST SAN BERNARDINO AND WEST RIVERSIDE COUNTIES. .SHORT TERM (TODAY-MONDAY)...SKIES WERE CLEAR EARLY THIS MORNING. AIRCRAFT SOUNDINGS SHOWED INCREASING N TO NW WINDS ALOFT. WEAKENING ONSHORE GRADIENTS TO THE E AND INCREASING OFFSHORE GRADIENTS FROM THE N WITH ABOUT -6 MB SAN-TPH. AN UPPER RIDGE WILL MOVE ACROSS THE WRN STATES TODAY AND SUNDAY FOLLOWED BY FLAT WLY FLOW MONDAY. OFFSHORE GRADIENTS WILL PEAK TODAY AND THEN SLOWLY WEAKEN THROUGH EARLY MONDAY...BECOMING ONSHORE MONDAY AFTERNOON. THERE WILL BE ENOUGH GRADIENT SUPPORT WITH SOME UPPER AND THERMAL SUPPORT FOR LOCAL STRONG GUSTY OFFSHORE WINDS TODAY. WINDS WILL LIKELY REACH ADVISORY STRENGTH WITH GUSTS TO NEAR 50 MPH THROUGH AND BELOW MOUNTAIN CANYONS AND PASSES. SKIES WILL REMAIN CLEAR EXCEPT FOR A FEW HIGH CLOUDS LATE SUNDAY AND MONDAY. MUCH WARMER TODAY W OF THE MOUNTAINS BUT COLD AIR ADVECTION WILL LIMIT WARMING IN THE MOUNTAINS AND DESERTS. MORE WARMING SUNDAY WITH MOST TEMPS WELL ABOVE SEASONAL AVERAGES. MAX TEMPS IN THE WARMER COASTAL AND INLAND VALLEYS WILL BE IN THE LOW TO MID 80S SUNDAY. COOLER NEAR THE COAST MONDAY WITH AN EARLIER AND STRONGER SEA BREEZE BUT STILL WARM INLAND. && .LONG TERM (TUESDAY-FRIDAY)...A LARGE COLD PAC TROUGH WILL SLOWLY DIG S ALONG THE W COAST. THIS WILL BRING COOLING AND A RETURN OF MARINE LAYER CLOUDINESS TUESDAY. MORE CLOUDS AND COOLING WEDNESDAY AND THURSDAY AS THE LOW DEEPENS OVER SRN CA WITH A GOOD CHANCE OF PRECIP. THERE WILL ALSO BE STRONG GUSTY WINDS...ESPECIALLY IN THE MOUNTAINS AND DESERTS. A SHORT WAVE MAY DIG INTO THE MAIN TROUGH THURSDAY BRINGING EVEN COLDER AIR ALOFT. THIS WOULD DESTABILIZE THE ATMOSPHERE AND COULD PRODUCE THUNDERSTORMS...WATERSPOUTS AND FUNNEL CLOUDS. COOL DRY NORTHWEST FLOW SHOULD DEVELOP FRIDAY AS THE LOW MOVES E. HOWEVER...THE EXACT STRENGTH AND TIMING OF THIS SYSTEM ARE STILL UNCERTAIN. && .AVIATION... 270800Z...NO CIGS OR VIS RESTRICTIONS THROUGH TONIGHT. STRONG N-NE FLOW ALOFT MAY CREATE MOUNTAIN WAVE ACTIVITY WITH ASSOCIATED UP AND DOWN DRAFTS DOWNWIND OF THE HIGHER TERRAIN TODAY. THROUGH AND BELOW PASSES AND CANYONS...AREAS OF NE WINDS 20KT WITH GUSTS 30KT...AND LOCALLY 25 KT WITH GUSTS 40KT WILL PEAK BTWN 15Z-20Z SAT WITH POSSIBLE LLWS AT TIMES AT KONT...KRAL...KRIV...KSNA AND KRNM. && .SGX WATCHES/WARNINGS/ADVISORIES... WIND ADVISORY UNTIL 5 PM TODAY FOR THE MOUNTAINS AND INLAND EMPIRE. SEE LAXNPWSGX && PUBLIC...ATKIN AVIATION...JAD
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN DIEGO CA 400 AM PDT SAT MAR 27 2010 CAZ042-CAZ043-048-050-055>058-060>062-280000- ORANGE COUNTY COASTAL AREAS-SAN DIEGO COUNTY COASTAL AREAS- SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE- SAN DIEGO COUNTY VALLEYS-SAN BERNARDINO COUNTY MOUNTAINS- RIVERSIDE COUNTY MOUNTAINS-SANTA ANA MOUNTAINS AND FOOTHILLS- SAN DIEGO COUNTY MOUNTAINS-APPLE AND LUCERNE VALLEYS- COACHELLA VALLEY-SAN DIEGO COUNTY DESERTS- 400 AM PDT SAT MAR 27 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EXTREME SOUTHWESTERN CALIFORNIA. .DAY ONE...TODAY AND TONIGHT OFFSHORE FLOW WILL CAUSE LOCAL STRONG GUSTY OFFSHORE WINDS TODAY...MAINLY THROUGH AND BELOW MOUNTAIN CANYONS AND PASSES. LOCAL STRONG AND DANGEROUS RIP CURRENTS AT THE BEACHES. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY LOCAL STRONG AND DANGEROUS RIP CURRENTS AT THE BEACHES. A PACIFIC STORM WILL BRING LOCAL STRONG GUSTY ONSHORE WINDS WEDNESDAY AND THURSDAY...ESPECIALLY IN THE MOUNTAINS AND DESERTS. .SPOTTER INFORMATION STATEMENT...SKYWARN WEATHER ACTIVATION IS NOT REQUESTED FOR THIS AREA...HOWEVER WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS. ATKIN
The national radar mosaic for the moment the first event began.
1 high wind. Local standard time, as filed.
High winds began in the Santa Ana Mountains between 0630 and 0730 PST and continued through 1130 PST. Between 0830 PST and 0930 PST, a peak wind gust of 70 MPH was measured by the Fremont Canyon RAWS.
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: 219435.