The strong gusty Northeast winds mainly impacted the Inland Empire below the Cajon Pass and the Santa Ana Mountains. There was one report of a car being blown off the road and one tree down.
Every event with a place to put it; 2 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.
Offshore winds quickly developed on the evening of the 23rd.The strong gusty Northeast winds mainly impacted the Inland Empire below the Cajon Pass and the Santa Ana Mountains. There was one report of a car being blown off the road and one tree down. The winds diminished overnight.
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 Nov 23, 9:30 PM PST, 0 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN DIEGO CA 930 PM PST MON NOV 23 2009 .SYNOPSIS...HIGH PRESSURE ALOFT AND WEAK OFFSHORE FLOW WILL BRING CLEAR SKIES WITH WARMER DAYS THROUGH THURSDAY. LOCAL GUSTY WINDS THROUGH AND BELOW MOUNTAIN CANYONS AND PASSES. COOLER FRIDAY THROUGH THE WEEKEND AS LOW PRESSURE MOVES PAST TO THE NORTH. LOCAL GUSTY OFFSHORE WINDS AGAIN SUNDAY AND MONDAY. && .DISCUSSION...FOR SOUTHWEST CALIFORNIA INCLUDING SAN DIEGO... ORANGE...SOUTHWEST SAN BERNARDINO AND WEST RIVERSIDE COUNTIES. .SHORT TERM (TONIGHT-THURSDAY)...SKIES WERE CLEAR THIS EVENING. THE 00Z NKX SOUNDING WAS DRY WITH WEAK NE WINDS IN THE LOW LEVELS AND NW WINDS ALOFT. OFFSHORE GRADIENTS WITH ABOUT -10 MB SAN-TPH AND OFFSHORE TRENDS. RIDGING ALOFT AND OFFSHORE FLOW WILL CONTINUE CLEAR SKIES WITH WARMER DAYS. THURSDAY WILL BE THE WARMEST DAY IN MOST AREAS WITH MAX TEMPS ABOUT 5 TO 10 DEGREES ABOVE SEASONAL AVERAGES INLAND FROM THE IMMEDIATE COAST. OFFSHORE WINDS WILL MAINLY BE GRADIENT DRIVEN WITH WEAK UPPER AND THERMAL SUPPORT. THE STRONGEST WINDS WILL BE TUESDAY MORNING WITH MOST WINDS REMAINING BELOW ADVISORY STRENGTH...GUSTS TO ABOUT 35 MPH. HOWEVER...THERE COULD BE ISOLATED STRONGER GUSTS IN THE FAVORED AREAS BELOW THE CAJON PASS AND IN THE SANTA ANA MOUNTAIN CANYONS. THE SURFACE HIGH OVER THE INTERIOR WILL WEAKEN AND SHIFT E FOR WEAKER OFFSHORE WINDS WEDNESDAY AND THURSDAY. THE WARM DRY OFFSHORE FLOW WILL MAINTAIN AN ELEVATED FIRE WEATHER HAZARD. && .LONG TERM (FRIDAY-MONDAY)...AN UPPER TROUGH WILL MOVE PAST TO THE N FRIDAY BRINGING COOLING AND HIGHER HUMIDITIES WITH A RETURN OF ONSHORE FLOW. THERE WILL BE A BRIEF RETURN OF MARINE LAYER CLOUDS AND VARIABLE HIGH CLOUDINESS FRIDAY AND SATURDAY. ANOTHER STRONGER TROUGH SHOULD MOVE PAST TO THE N AND E SUNDAY BRINGING POTENTIALLY STRONG AND COOL N TO NE WINDS. THE OFFSHORE WINDS WILL WEAKEN MONDAY. && .AVIATION... 240340Z...VFR WITH CLEAR SKIES AND UNRESTRICTED VIS THROUGH TUE. OFFSHORE FLOW WILL INCREASE TONIGHT AND CONTINUE THROUGH TUE MORNING. LOCAL NE WINDS 15-30 KT WITH HIGHER GUSTS POSSIBLE THROUGH AND BELOW SOME MOUNTAIN PASSES AND CANYONS AT TIMES...CREATING POCKETS OF LLWS...ESPECIALLY NEAR KONT AND KSNA. && .SGX WATCHES/WARNINGS/ADVISORIES... WIND ADVISORY FOR THE INLAND EMPIRE AND SANTA ANA MOUNTAINS AND FOOTHILLS UNTIL 2 PM TUESDAY. && PUBLIC...ATKIN AVIATION...JAD
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN DIEGO CA 400 PM PST MON NOV 23 2009 CAZ042-043-048-050-055>058-060>062-241200- 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 PM PST MON NOV 23 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EXTREME SOUTHWESTERN CALIFORNIA. .DAY ONE...REMAINDER OF THIS AFTERNOON AND TONIGHT LOCAL GUSTY OFFSHORE WINDS THROUGH AND BELOW MOUNTAIN CANYONS AND PASSES LATE TONIGHT. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH MONDAY AN EXTENDED PERIOD OF WEAK...DRY OFFSHORE FLOW WILL INCREASE THE FIRE WEATHER HAZARD TUESDAY THROUGH THURSDAY...MAINLY IN THE MOUNTAINS AND INLAND VALLEYS NEAR THE FOOTHILLS. THERE WILL ALSO BE LOCALLY GUSTY WINDS BELOW THE PASSES AND CANYONS. THERE IS THE POTENTIAL FOR LOCAL STRONG GUSTY OFFSHORE WINDS SUNDAY INTO MONDAY. .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.
2 high wind. Local standard time, as filed.
High winds began at the Fremont Canyon RAWS around 2130 PST and ended between 0130 PST and 0230 PST on the 24th. A peak wind gust of 74 MPH was measured between 2231 and 2330 PST.
A peak wind gust of 66.4 MPH was measured by the Palm Avenue Elementary School mesonet at 0123 PST. High winds occurred between approximately 0015 PST and 0200 PST.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2009Every state in 2009This day in weather historyWarnings in California, November 2009
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: 201054, 201055.