High pressure over the Great Basin and offshore flow resulted in gusty Santa Ana winds through and below mountain passes and canyons. The Fremont Canyon RAWS measured a 64 mph wind gust while a spotter in Rancho Cucamonga measured a 65 mph wind gust.
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.
High pressure over the Great Basin and offshore flow resulted in gusty Santa Ana winds through and below mountain passes and canyons. The Fremont Canyon RAWS measured a 64 mph wind gust while a spotter in Rancho Cucamonga measured a 65 mph wind gust. Wind gusts in excess of 50 mph were also measured at three other locations within the Inland Empire.
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 Dec 4, 2:23 AM PST, 2 hours 7 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN DIEGO CA 223 AM PST SUN DEC 4 2005 .SYNOPSIS...DEVELOPING OFFSHORE FLOW WILL CAUSE LOCAL STRONG GUSTY WINDS THROUGH AND BELOW MOUNTAIN CANYONS AND PASSES AT TIMES THROUGH MONDAY MORNING. MOSTLY CLEAR SKIES WITH WARMER DAYS. COLD AT NIGHT IN AREAS PROTECTED FROM THE WINDS. UPPER LEVEL LOW PRESSURE WILL CAUSE PARTLY CLOUDY SKIES DURING THE SECOND HALF OF NEXT WEEK. && .DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES. CLEAR WITH STRONG OFFSHORE TRENDS OVERNIGHT. WINDS HAVE BEEN INCREASING AT THE FAVORED LOCATIONS INCLUDING FREMONT CANYON AND BELOW THE CAJON PASS AT PALM ELEMENTARY. BOTH LOCATIONS HAVE GUSTS TO AT LEAST 50 MPH THROUGH 1 AM. THE WATER VAPOR LOOP SHOWS A DARKENING AREA MOVING THROUGH EXTREME SW CA NOW WHICH MAY BE SUPPORTING THE STRONG WIND GUSTS WE ARE SEEING NOW AT ISOLATED LOCATIONS. AN ACARS REPORT FROM KONT AT 0849Z SHOWED 35 KT SUSTAINED WIND MAX AT 2500 FT. SOME OF THIS MAY MIX DOWN BY MORNING. MODELS SHOW LITTLE SUPPORT FOR STRONG WINDS ABOVE THE 850 MB LEVEL SO THE BULK OF THE FORCING IS DUE TO COLD AIR ADVECTION AND WINDS BELOW 850 MB. THIS FORCING PERSISTS THROUGH MONDAY MORNING SO THE WINDS ARE LIKELY TO REDEVELOP AGAIN DIURNALLY MONDAY MORNING IF THEY LET UP A BIT THIS AFTERNOON AND EVENING. WITH THIS IN MIND...KEEPING THE WIND ADVISORY THROUGH MON MORNING LOOKS REASONABLE. HOWEVER THE LARGER SCALE DVV IS GREATEST TODAY...SO THE WINDS MAY BE MORE ISOLATED MONDAY BELOW PASSES AND CANYONS THAN TODAY. A FEW GUSTS TO HIGH WIND CRITERIA ARE LIKELY IN THE SANTA AN MTNS AND BELOW THE CAJON PASS TODAY SO A HIGH WIND WARNING WILL BE ISSUED THROUGH NOON TODAY FOR THOSE AREAS. ALL OTHER ZONES EXPECTED TO BE AT OR BELOW WIND ADVISORY CRITERIA. INITIAL COLD ADVECTION TODAY SHOULD TEMPER THE HIGHS INLAND TODAY... BUT AS IT WEAKENS A BIT MORE MON...MAX TEMPS SHOULD INCREASE A FEW DEGREES. OVERNIGHT WHERE THE WINDS DO NOT BLOW...VERY LOW DEWPOINTS AND CLEAR SKIES WILL ALLOW FOR RAPID COOLING AND SOME SUB FREEZING TEMPERATURES. THIS COULD HARM SOME TENDER PLANTS WEST OF THE MOUNTAINS. SOME DEWPOINT RECOVERY IS POSSIBLE ON TUE AS THE OFFSHORE WEAKENS AND AFTERNOON WINDS TURN MORE ONSHORE. WED AND THU EVEN MORE SO...BUT THE OUTLOOK IS MURKY BEYOND TUE. THERE IS LOW CONFIDENCE IN THE LONGER RANGE PROGS AS THE MODELS TRY AND COME TO TERMS WITH A DEVELOPING CUT-OFF LOW PRESSURE AREA DIGGING UNDER A STRENGTHENING RIDGE OVER THE PACIFIC NW. HPC HAS DECIDED ON A COMPROMISE BETWEEN MODELS WHICH PLACES THE UPPER LOW NEAR PT. CONCEPTION ON THU. THE CURRENT RUN OF THE GFS DOES PUT LIGHT RAIN ON US THU AS PACIFIC MOISTURE IS ADVECTED INTO THE MID LEVELS AHEAD OF THE STORM...BUT SURFACE FLOW REMAINS OFFSHORE AND THE POSITION OF THE UPPER LOW IS TOO FAR W FOR ANY SIGNIFICANT RAIN HERE. FOR NOW...THE FORECAST ZONES REMAIN DRY...BUT STAY TUNED FOR FUTURE DEVELOPMENTS. && .AVIATION... MAIN CONCERN TODAY IS LLWS AND TURBULENCE ASSOCIATED WITH THE OFFSHORE FLOW. NE WINDS BELOW 8000 FEET SUSTAINED +25 KT WITH SURFACE GUSTS +40KT THROUGH 1300 PST/2100 UTC OVER MOST OF SW CALIFORNIA AND CONTINUING OVER RIVERSIDE/SAN DIEGO COUNTY MOUNTAINS BEYOND 2200 PST/0600 UTC TONIGHT && .SGX WATCHES/WARNINGS/ADVISORIES... HIGH WIND WARNING FOR THE SANTA ANA MOUNTAINS AND FOOTHILLS AND BELOW THE CAJON PASS THROUGH NOON TODAY...SEE LAXNPWSGX. RED FLAG WARNING TODAY FOR ALL OF ORANGE COUNTY...INLAND VALLEYS... AND MOUNTAINS IN FAR SOUTHWEST CALIFORNIA...SEE LAXRFWSGX. WIND ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT THROUGH NOON MONDAY FOR ALL MOUNTAINS AND FOR THE INLAND EMPIRE...SEE LAXNPWSGX. HIGH RIP CURRENT RISK SUNDAY FOR SAN DIEGO COUNTY...SEE LAXSRFSGX. && PUBLIC...JAD AVIATION...BALFOUR
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN DIEGO CA 400 AM PST SUN DEC 4 2005 CAZ042-043-048-050-055-056-057-058-060-061-062-051200- 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 PST SUN DEC 4 2005 THIS HAZARDOUS WEATHER OUTLOOK IS FOR ALL OF EXTREME SOUTHWESTERN CALIFORNIA. STRONG OFFSHORE TODAY THROUGH MONDAY MORNING THROUGH AND BELOW MOUNTAIN PASSES AND CANYONS. THE WINDS WILL MAKE TRAVEL HAZARDOUS FOR HIGH PROFILE VEHICLES. MOTORISTS SHOULD ALSO WATCH FOR BROKEN TREE LIMBS AND DOWNED POWER LINES IN AREAS OF STRONG WINDS. THE WINDS WILL COMBINE WITH VERY DRY CONDITIONS TO CREATE A DANGEROUS WILDFIRE THREAT. .DAY ONE... TODAY AND TONIGHT. STRONG NORTHEAST WINDS IN THE MOUNTAINS AND THE INLAND EMPIRE. HIGH WIND WARNING BELOW THE CAJON PASS AND FOR THE SANTA ANA MOUNTAINS AND FOOTHILLS UNTIL NOON. WIND ADVISORY FOR ALL MOUNTAINS OF FAR SOUTHWEST SOUTHERN CALIFORNIA THROUGH MONDAY NOON. SEE LAXNPWSGX. RED FLAG WARNING FOR DANGEROUS FIRE CONDITIONS THROUGH 1O PM TONIGHT. SEE LAXRFWSGX. ABOVE NORMAL SURF IS EXPECTED TO CAUSE A HIGH RISK FOR RIP CURRENTS ALONG THE SAN DIEGO COUNTY COAST TODAY. SEE LAXSRFSGX FOR DETAILS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. STRONG AND GUSTY NORTHEAST WINDS ARE EXPECTED TO CONTINUE THROUGH MONDAY MORNING THROUGH AND BELOW MOUNTAIN PASSES AND CANYONS. WIND ADVISORY FOR THE MOUNTAINS OF FAR SOUTHWEST SOUTHERN CALIFORNIA AND THE INLAND EMPIRE THROUGH MONDAY NOON. SEE LAXNPWSGX. LOW HUMIDITY AND LOCALLY GUSTY WINDS WILL CONTINUE A HIGH WILDFIRE DANGER THROUGH TUESDAY. SEE LAXRFWSGX. OTHERWISE...NO WIDESPREAD HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT...SKYWARN WEATHER SPOTTER ACTIVATION IS NOT REQUESTED FOR THIS AREA...HOWEVER WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES. JAD
The national radar mosaic for the moment the first event began.
2 high wind. Local standard time, as filed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2005Every state in 2005This day in weather historyWarnings in California, December 2005
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: 5483564, 5483565.