1 flash flood, as filed by the National Weather Service.
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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 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 Mar 22, 2:00 PM PST, 2 hours 58 minutes earlier.
SOUTHWEST CALIFORNIA AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LOS ANGELES/OXNARD CA 200 PM PST TUE MAR 22 2005 .SHORT TERM...RAIN FALLING ACROSS THE AREA AS EXPECTED. SURFACE FRONT HAS PUSHED ACROSS MOST OF CENTRAL COAST...SO MOST WIDESPREAD RAIN WILL BE ACROSS VTU/LAX COUNTIES THROUGH THE EVENING. RAINFALL WILL BE ENHANCED BY SECONDARY IMPULSE MOVING ACROSS THE AREA THIS EVENING. AFTER IMPULSE MOVES THROUGH TONIGHT...AREA REMAINS UNDER CYCLONIC FLOW...SO WILL EXPECT MOSTLY CLOUDY SKIES AND A CHANCE OF SHOWERS ACROSS THE AREA WEDNESDAY/WEDNESDAY NIGHT. ON THURSDAY MODELS CONTINUE TO DISAGREE WITH TRACK/STRENGTH OF SHORTWAVE ROTATING THROUGH UPPER TROUGH. GFS BRINGS THE SHORTWAVE MUCH CLOSER TO OUR CWA THAN THE NAM. GIVEN PERFORMANCE THIS WINTER...WOULD BE INCLINED TO GO WITH GFS. HOWEVER...WILL NOT BITE FULLY ON GFS... INSTEAD WILL CONTINUE WITH LIKELY/CHANCE POPS FOR THE AREA WITH BEST CHANCES OVER LAX COUNTY. BY FRIDAY MORNING...SHORTWAVE SHOULD BE EAST OF THE AREA...WITH PARTLY CLOUDY SKIES AND A VERY SLIGHT CHANCE OF SHOWERS. TOTAL QPF AMOUNTS THROUGH TONIGHT ARE EXPECTED TO RANGE FROM 0.50 TO 1.50 ACROSS COASTAL AREAS WITH UP TO 3.00 POSSIBLE IN THE MOUNTAINS. SNOW LEVELS THROUGH TONIGHT WILL BE AROUND 6000 FEET. GIVEN THE UNCERTAINITY OF THE SYSTEM FOR THURSDAY...DO NOT HAVE ANY GREAT CONFIDENCE WITH QPF AMOUNTS ON THURSDAY. IF THE GFS WOULD VERIFY...GENERALLY 0.25 TO 0.75 WITH HIGHER AMOUNTS IN THE MOUNTAINS WOULD BE POSSIBLE. HOPEFULLY...FUTURE MODEL RUNS WILL COME INTO BETTER AGREEMENT...ALLOWING FOR A HIGHER CONFIDENCE RAIN/QPF FORECAST. TEMPS WILL REMAIN BELOW NORMAL THROUGH FRIDAY...ALTHOUGH FRIDAY SHOULD START A NICE WARMING TREND. .LONG TERM...SATURDAY/SUNDAY SHOULD BE DRY AND NOTICEABLY WARMER AS UPPER RIDGE BUILDS OVER THE AREA. ON MONDAY...SOME MODEL UNCERTAINITY EXISTS AS UPPER RIDGE IS FLATTENED BY SYSTEM MOVING ACROSS NORTHERN/CENTRAL CALIFORNIA. AT THIS TIME...COULD BE A MINOR SHOWER THREAT FOR CENTRAL COAST ON MONDAY. SO...WILL KEEP SLIGHT CHANCE POPS GOING FOR THE CENTRAL COAST ON MONDAY. ON TUESDAY... THE WEAK SYSTEM SHOULD BE EAST OF CALIFORNIA...SO DRY CONDITIONS WILL BE EXPECTED. && .LOX WATCHES/WARNINGS/ADVISORIES... SMALL CRAFT ADVISORY (SEE LAXCWFLOX). && THOMPSON
The Los Angeles radar (KVTX), 75 km away, was scanning. The volume nearest the first event began at 00:59 UTC.
1 flash flood. Local standard time, as filed.
Heavy rain over the Santa Monica Mountains produced flash flooding and mudslides across western sections of Los Angeles county. California Highway Patrol reported numerous road closures across the Santa Monica Mountain area due to flash flooding and mudslides including McClure Tunnel.
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, March 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: 5444670.