1 heat, as filed by the National Weather Service.
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 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 Jul 29, 1:53 PM PST, 1 hour 7 minutes earlier.
MOJAVE DESERT/SOUTHERN GREAT BASIN AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LAS VEGAS NV 253 PM PDT TUE JUL 29 2003 .SYNOPSIS...A MOIST AND UNSTABLE AIR MASS WILL REMAIN OVER THE MOJAVE DESERT AND SOUTHERN GREAT BASIN THROUGH FRIDAY FOR A CONTINUED THREAT OF AFTERNOON AND EVENING THUNDERSTORMS EACH DAY. THE MOST FAVORED AREAS FOR STORMS THIS EVENING WILL BE NORTHWEST ARIZONA...EXTREME SOUTHERN NEVADA AND THE SAN BERNARDINO COUNTY DESERTS. SOME WILL PRODUCE HEAVY RAINFALL AND POSSIBLE FLASH FLOODING. .DISCUSSION...CONVECTION WAS STARTING TO FIRE AS EXPECTED ACROSS NORTHWEST ARIZONA AND EVEN AN ISOLATED CELL HAD STARTED OVER EASTERN SAN BERNARDINO COUNTY...PROBABLY AIDED BY JET DYNAMICS. SCATTERED STORMS WERE ALSO DEVELOPING OVER WEST CENTRAL NEVADA NEAR THE HIGH CENTER. THE MAIN AREA OF CONCERN THIS AFTERNOON AND EVENING STILL LOOKS TO BE MOHAVE...SOUTHERN CLARK (SOUTH OF LAS VEGAS) AND SOUTHEAST SAN BERNARDINO COUNTIES. MOISTURE...INSTABILITY AND DYNAMICS ALL COMBINE TO FAVOR THOSE AREAS FOR A FLASH FLOOD THREAT AND WILL KEEP THE WATCH GOING THROUGH THIS EVENING. BOUNDARY INTERACTION COULD HELP PUSH THUNDERSTORMS INTO THE LAS VEGAS VALLEY THIS EVENING AND WILL INCREASE CHANCE IN THE FORECAST. CONVECTION MAY GO THROUGH LATE NIGHT OVER SAN BERNARDINO AS MID LEVEL DISTURBANCE ROLLS TO THE WEST. MOIST SOUTHEAST FLOW OVER THE ENTIRE AREA WEDNESDAY BUT THE ONLY NOTICEABLE DYNAMICS ARE WEAK AND ASSOCIATED WITH THE JET OVER SOUTHERN CALIFORNIA. CONVECTION MAY BE A LITTLE MORE OROGRAPHICALLY ENHANCED THAN THE PAST FEW DAYS SINCE FORCING LOOKS WEAK. THURSDAY LOOKS FAVORABLE MAINLY FOR PRECIP OVER THE NORTHERN HALF OF THE FORECAST AREA. A LOW OFF THE SOUTHERN CALIFORNIA PRODUCES SOUTHERLY FLOW AND POSSIBLY A DISTURBANCE EJECTING UP INTO NORTHERN NEVADA BY THURSDAY AFTERNOON. LOW LEVEL MOISTURE AND INSTABILITY REMAINS IN PLACE ACROSS THE ENTIRE AREA BUT THE SOUTHERN HALF APPEARS TO LOSE OUT ON FORCING EARLY ON. FRIDAY AND SATURDAY STILL COULD BE FAIRLY ACTIVE DAYS AS THE MID LEVELS DRY OUT AND COOL SLIGHTLY WITH A TROUGH OFF THE WEST COAST. LOW LEVEL MOISTURE SHOULD BE SLOW TO SCOUR OUT AND INCREASING SHEAR ALOFT WITH THE SOUTHWEST FLOW MAY FAVOR ORGANIZED STORMS WHICH DEVELOP OVER THE HIGHER TERRAIN THEN MOVE OFF INTO THE LOWER DESERTS. ECMWF AND GFS BOTH INDICATE SOUTHWEST FLOW PERSISTS THROUGH TUESDAY AND SHOULD RESULT IN DRYING TREND. .LAS...A FLASH FLOOD WATCH IS IN EFFECT UNTIL 9 PM PST. SEE THE LATEST STATEMENT FOR DETAILS. ADAIR
AZZ001>003-036-CAZ026>029-NVZ013>022-301400- HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE LAS VEGAS NV 950 AM PDT TUE JUL 29 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST CALIFORNIA/SOUTHERN NEVADA/NORTHWEST ARIZONA ...FLASH FLOOD WATCH IS IN EFFECT UNTIL 9 PM PDT (MST) FOR MOHAVE COUNTY...SOUTHERN CLARK COUNTY...AND SAN BERNARDINO COUNTY... .DAY ONE...TODAY. SCATTERED THUNDERSTORMS WILL DEVELOP ACROSS THE REGION THIS AFTERNOON...WITH THE GREATEST COVERAGE EXPECTED SOUTH OF THE LAS VEGAS VALLEY ACROSS SOUTHERN CLARK COUNTY AND SAN BERNARDINO COUNTY AND TO THE EAST IN MOHAVE COUNTY. SOME STORMS WILL PRODUCE HEAVY RAINFALL AND GUSTY WINDS. INDIVIDUAL STORMS MAY PROVIDE A FLASH FLOOD THREAT...HOWEVER...THE ADDITIVE EFFECT FROM MULTIPLE STORMS OVER ANY GIVEN LOCATION WILL BE THE MAIN CONCERN FOR FLASH FLOODING THIS AFTERNOON AND EVENING. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. MOISTURE WILL CONTINUE TO CIRCULATE AROUND AN AREA OF HIGH PRESSURE OVER THE WESTERN STATES THROUGH FRIDAY. THIS WILL CONTINUE TO BRING ISOLATED TO SCATTERED THUNDERSTORMS EACH AFTERNOON. SOME DRYING OF THE AIRMASS IS EXPECTED OVER THE WEEKEND...RESULTING IN LOWER CHANCES OF THUNDERSTORMS. .SPOTTER INFORMATION STATEMENT... SKYWARN ACTIVATION MAY BE NEEDED IN THE WATCH AREA LATER TODAY...STAY TUNED FOR FURTHER UPDATES DURING THE DAY.
The national radar mosaic for the moment the first event began.
1 heat. Local standard time, as filed.
A 2-year-old girl was left in the back of a car for two hours and died from extreme heat.
As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.
| Event | Date | Age | Sex | Where | Kind |
|---|---|---|---|---|---|
| Heat, C Clark | 2003-07-29 | 2 | Female | Vehicle/Towed Trailer | Direct |
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Nevada in 2003Every state in 2003This day in weather historyWarnings in Nevada, July 2003
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: 5366301.