1 hail, as filed by the National Weather Service.
Every event with a place to put it. 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 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 Las Vegas, NV wrote its last area forecast discussion before the first event at Aug 12, 2:15 PM PST, 15 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LAS VEGAS NV 315 PM PDT THU AUG 12 2004 .SYNOPSIS...MONSOON MOISTURE WILL CONTINUE TO MOVE INTO THE MOJAVE DESERT AND SOUTHERN GREAT BASIN THROUGH FRIDAY...FUELING SCATTERED THUNDERSTORMS AND CONSIDERABLE CLOUD COVER WHICH WILL HOLD AFTERNOON TEMPERATURES DOWN TO NEAR SEASONAL AVERAGES. WESTERLY FLOW WILL BEGIN TO PUSH THE MOISTURE EAST OVER THE WEEKEND...WITH THUNDERSTORM CHANCES DECREASING FROM WEST TO EAST. GENERALLY DRY WEATHER WILL RETURN EARLY NEXT WEEK...WITH AFTERNOON HIGHS REMAINING CLOSE TO SEASONAL AVERAGES. && .SHORT TERM...ACTIVE WEATHER ONGOING OVER MUCH OF THE CWFA SO WILL BE BRIEF. HIGHEST POPS TO BE FRIDAY AND SATURDAY AFTERNOONS...WITH A GRADUAL DECREASING TREND FROM THE WEST SUNDAY AND MONDAY. HEAT WAVE IS OVER THANKS TO THE EXTRA CLOUDINESS...AND EXCESSIVE HEAT WARNING HAS BEEN CANCELED. TEMPS BELOW SEASONAL AVERAGES NEXT COUPLE OF DAYS WITH GREATEST CLOUDINESS/PRECIP CHANCES...ONLY RECOVERING TO NEAR SEASONAL AVERAGES AS THE DRYING TREND SETS IN. ISOLATED SEVERE STORMS AND FLASH FLOODING WILL BE A CONCERN AT LEAST THROUGH SATURDAY...BUT FORECAST AREAL COVERAGE NOT HIGH ENOUGH IN ANY ONE ZONE TO JUSTIFY A FLASH FLOOD WATCH AT THIS TIME. && .LONG TERM...MONSOONAL MOISTURE TO BE SLOW TO LEAVE THE CWA WITH RATHER LIGHT FLOW ACROSS THE AREA INTO THE FIRST PART OF THE LONG TERM. UPPER TROUGH OFF THE WEST COAST WILL HELP TO PUSH SOME DRIER AIR INTO THE AREA MONDAY AND TUESDAY...BUT MOISTURE WILL STILL BE SLOW TO EXIT ACROSS MOHAVE COUNTY. HAVE LEFT A FEW POPS ON MONDAY BEFORE COMPLETELY DRYING THINGS OUT BY TUESDAY.TEMPERATURES ARE EXPECTED TO REMAIN AT OR SLIGHTLY ABOVE NORMAL THROUGH THE EXTENDED. && .AVIATION...TAF ADEQUATELY COVERS ALL SIGNIFICANT WEATHER EXPECTED AT KLAS. && .VEF WATCHES/WARNINGS/ADVISORIES... .NV...NONE. .AZ...NONE. .CA...NONE. && MORGAN/GORELOW
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LAS VEGAS NV 948 AM PDT THU AUG 12 2004 AZZ003-DDHHMM- NORTHWEST DESERTS- 948 AM MST THU AUG 12 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST ARIZONA. .DAY ONE...TODAY. ...EXCESSIVE HEAT WARNING TODAY... A STRONG AREA OF HIGH PRESSURE WILL KEEP TEMPERATURES ABOVE NORMAL TODAY. AN EXCESSIVE HEAT WARNING IS IN EFFECT FROM NOON UNTIL 8 PM FOR AREAS BELOW 4000 FEET. HIGH TEMPERATURES WILL BE NEAR 102 IN KINGMAN...107 IN WIKIEUP...AND 108 IN YUCCA. PLEASE REFER TO THE EXCESSIVE HEAT WARNING /RNONPWVEF/ FOR MORE DETAILS. SCATTERED THUNDERSTORMS WILL ALSO DEVELOP THIS AFTERNOON AND EVENING. WIDESPREAD SEVERE WEATHER IS NOT EXPECTED...BUT A FEW STORMS MAY PRODUCE LOCALIZED FLOODING AND STRONG GUSTY WINDS. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. SCATTERED AFTERNOON AND EVENING THUNDERSTORMS ARE EXPECTED AGAIN FRIDAY THROUGH SUNDAY. ISOLATED FLOODING AND STRONG GUSTY WINDS WILL BE POSSIBLE EACH DAY. FOR MONDAY THROUGH WEDNESDAY...THE PROBABILITY OF WIDESPREAD HAZARDOUS WEATHER IS LOW. AZZ002-036-CAZ029-NVZ016-017-020>022-DDHHMM- LAKE HAVASU AND FORT MOJAVE-LAKE MEAD NATIONAL RECREATION AREA- LAS VEGAS VALLEY-NORTHEAST CLARK COUNTY-SAN BERNARDINO COUNTY- UPPER COLORADO RIVER VALLEY-SOUTHERN CLARK COUNTY- WESTERN CLARK AND SOUTHERN NYE COUNTY- 948 AM PDT (948 AM MST) THU AUG 12 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST CALIFORNIA...SOUTHERN NEVADA...AND NORTHWEST ARIZONA. .DAY ONE...TODAY. ...EXCESSIVE HEAT WARNING TODAY... A STRONG AREA OF HIGH PRESSURE WILL KEEP TEMPERATURES ABOVE NORMAL TODAY. AN EXCESSIVE HEAT WARNING IS IN EFFECT FROM NOON UNTIL 8 PM FOR AREAS BELOW 4000 FEET. HIGH TEMPERATURES WILL BE NEAR 110 IN LAS VEGAS...115 AT LAKE MEAD...AND 110 TO 115 DOWN THE COLORADO RIVER VALLEY. PLEASE REFER TO THE EXCESSIVE HEAT WARNING /RNONPWVEF/ FOR MORE DETAILS. ISOLATED THUNDERSTORMS WILL ALSO DEVELOP THIS AFTERNOON AND EVENING. SEVERE WEATHER IS NOT EXPECTED...BUT LOCALIZED FLOODING FROM ANY SLOW MOVING STORMS CANNOT BE RULED OUT. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. SCATTERED AFTERNOON AND EVENING THUNDERSTORMS ARE EXPECTED FRIDAY AND SATURDAY. ISOLATED FLOODING AND STRONG GUSTY WINDS WILL BE POSSIBLE EACH DAY. FOR SUNDAY THROUGH WEDNESDAY...THE PROBABILITY OF WIDESPREAD HAZARDOUS WEATHER IS LOW. CAZ027-028-DDHHMM- DEATH VALLEY NATIONAL PARK-SAN BERNARDINO COUNTY DESERTS- 948 AM PDT THU AUG 12 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST CALIFORNIA. .DAY ONE...TODAY. ...EXCESSIVE HEAT WARNING TODAY... A STRONG AREA OF HIGH PRESSURE WILL KEEP TEMPERATURES ABOVE NORMAL TODAY. AN EXCESSIVE HEAT WARNING IS IN EFFECT FROM NOON UNTIL 8 PM FOR AREAS BELOW 4000 FEET. HIGH TEMPERATURES WILL BE NEAR 109 IN BARSTOW...AND 122 IN DEATH VALLEY. PLEASE REFER TO THE EXCESSIVE HEAT WARNING /RNONPWVEF/ FOR MORE DETAILS. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. ISOLATED AFTERNOON AND EVENING THUNDERSTORMS ARE EXPECTED FRIDAY AND SATURDAY. SEVERE WEATHER IS NOT EXPECTED...BUT LOCALIZED FLOODING FROM ANY SLOW MOVING STORMS CANNOT BE RULED OUT. FOR SUNDAY THROUGH WEDNESDAY...THE PROBABILITY OF WIDESPREAD HAZARDOUS WEATHER IS LOW. AZZ001-NVZ015-DDHHMM- LINCOLN COUNTY-NORTHWEST PLATEAU- 948 AM PDT (948 AM MST) THU AUG 12 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHERN NEVADA AND NORTHWEST ARIZONA. .DAY ONE...TODAY. ISOLATED THUNDERSTORMS WILL DEVELOP THIS AFTERNOON AND EVENING. SEVERE WEATHER IS NOT EXPECTED...BUT LOCALIZED FLOODING FROM ANY SLOW MOVING STORMS CANNOT BE RULED OUT. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. SCATTERED AFTERNOON AND EVENING THUNDERSTORMS ARE EXPECTED FRIDAY THROUGH SUNDAY. ISOLATED FLOODING AND STRONG GUSTY WINDS WILL BE POSSIBLE EACH DAY. FOR MONDAY THROUGH WEDNESDAY...THE PROBABILITY OF WIDESPREAD HAZARDOUS WEATHER IS LOW. CAZ026-NVZ014-018-019-DDHHMM- ESMERALDA AND CENTRAL NYE COUNTY- OWENS VALLEY AND ADJACENT EASTERN SIERRA SLOPES-SHEEP RANGE- SPRING MOUNTAINS-RED ROCK CANYON- 948 AM PDT THU AUG 12 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST CALIFORNIA AND SOUTHERN NEVADA. .DAY ONE...TODAY. ISOLATED THUNDERSTORMS WILL DEVELOP THIS AFTERNOON AND EVENING. SEVERE WEATHER IS NOT EXPECTED...BUT LOCALIZED FLOODING FROM ANY SLOW MOVING STORMS CANNOT BE RULED OUT. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. SCATTERED AFTERNOON AND EVENING THUNDERSTORMS ARE EXPECTED FRIDAY AND SATURDAY. ISOLATED FLOODING AND STRONG GUSTY WINDS WILL BE POSSIBLE EACH DAY. FOR SUNDAY THROUGH WEDNESDAY...THE PROBABILITY OF WIDESPREAD HAZARDOUS WEATHER IS LOW. MORGAN
The Santa Ana Mts radar (KSOX), 127 km away, was scanning. The volume nearest the first event began at 22:27 UTC.
1 hail. Local standard time, as filed.
Three quarter inch hail was reported at the north entrance to Joshua Tree National Park.
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, August 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: 5416886.