Tree branches torn off below Cajon Pass.
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.
Tree branches torn off below Cajon Pass.
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 Jan 5, 3:30 AM PST, 27 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN DIEGO 330 AM PST MON JAN 5 2004 .SYNOPSIS...HIGH PRESSURE ALOFT AND OFFSHORE FLOW WILL KEEP THE WEATHER FAIR THROUGH TUESDAY EXCEPT FOR HIGH CLOUDS AT TIMES AND LOCALLY GUSTY WINDS THROUGH AND BELOW MOUNTAIN CANYONS AND PASSES. IT IS COLD THIS MORNING...AND FROST ADVISORIES FOR THE INLAND VALLEYS AND FREEZE WARNINGS FOR THE SOUTHERN DESERTS HAVE BEEN ISSUED. WEAK UPPER LEVEL LOW PRESSURE WILL BRING MORE CLOUDS AND COOLER DAYS TOWARD MID WEEK FOLLOWED BY HIGH PRESSURE TOWARD THE END OF THE WEEK. && .DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES. IT IS A LITTLE WINDIER THAN EXPECTED THIS MORNING...SO THE AREA OF FROST OR FREEZE WILL PROBABLY NOT BE AS GREAT AS EXPECTED. HOWEVER WIND PROTECTED AREAS WILL STILL BE QUITE COLD BY SUNRISE...SO THE NPW WILL CONTINUE UNTIL 800 AM. RH WILL INCREASE ALOFT THROUGH TUESDAY TO BRING SOME HIGH CLOUDS. SURFACE RH WILL REMAIN LOW UNTIL WED WHEN WEAK ONSHORE FLOW DEVELOPS. MID-HIGH LEVEL MOISTURE WILL CAUSE MOSTLY CLOUDY SKIES WED WITH A FEW SPRINKLES POSSIBLE. WEAK SHORTWAVES IN W FLOW TO BRING A FEW CLOUDS THU AND FRI. RIDGING AND WARMING EXPECTED ON THE WEEKEND. && .SGX WATCHES/WARNINGS/ADVISORIES... FREEZE...FROST...AND WIND ADVISORY UNTIL 800 AM...SEE LAXNPWSGX. && MACKECHNIE
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE SAN DIEGO CA 600 AM PST SUN JAN 4 2004 CAZ042-043-048-050-055>058-060>062-051400- 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 YUCCA VALLEYS- COACHELLA VALLEY- SAN DIEGO COUNTY DESERTS- 600 AM PST SUN JAN 4 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EXTREME SOUTHWESTERN CALIFORNIA. .DAY ONE... TODAY THROUGH TONIGHT WIND ADVISORY THROUGH NOON TODAY SANTA ANA MOUNTAINS AND FOOTHILLS- SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE- FROST ADVISORY TONIGHT FOR SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE- SAN DIEGO COUNTY VALLEYS- FREEZE WARNING TONIGHT FOR COACHELLA VALLEY- SAN DIEGO COUNTY DESERTS- REFER TO LAXNPWSGX WWUS76 KSGX FOR DETAILS. .DAYS TWO THROUGH SEVEN... MONDAY THROUGH SATURDAY POSSIBLE AREAS OF DENSE FOG WITH VISIBILITY BELOW ONE QUARTER MILE... FOR INNER WATERS... ORANGE COUNTY COASTAL AREAS... SAN DIEGO COUNTY COASTAL AREAS... TUESDAY NIGHT AND WEDNESDAY MORNING. POSSIBLE AREAS OF DENSE FOG WITH VISIBILITY BELOW ONE QUARTER MILE... FOR INNER WATERS... SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE- SAN DIEGO COUNTY VALLEYS- WEDNESDAY NIGHT AND THURSDAY MORNING. BALFOUR
The national radar mosaic for the moment the first event began.
1 high wind. Local standard time, as filed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2004Every state in 2004This day in weather historyWarnings in California, January 2004
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: 5382537.