1 flash flood, 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 25, 9:00 AM PST, 4 hours 28 minutes earlier.
MOJAVE DESERT/SOUTHERN GREAT BASIN AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LAS VEGAS NV 1000 AM PDT FRI JUL 25 2003 .SYNOPSIS...MOIST SOUTHERLY FLOW AND AN UNSTABLE ATMOSPHERE TODAY WILL ALLOW SCATTERED THUNDERSTORMS TO DEVELOP OVER THE REGION. SOME OF THESE STORMS WILL CONTAIN VERY HEAVY RAIN. THE MOIST SOUTHERLY FLOW WILL CONTINUE INTO THE MOJAVE DESERT AND SOUTHERN GREAT BASIN THROUGH THE WEEKEND AS HIGH PRESSURE MIGRATES FROM COLORADO BACK WEST INTO EAST CENTRAL NEVADA SUNDAY. TEMPERATURE WILL WARM SEVERAL DEGREES BY SUNDAY. .DISCUSSION...WATER VAPOR IMAGERY THIS MORNING SHOWS THE SOUTHERLY FLOW FROM AROUND THE HIGH CENTER OVER EASTERN COLORADO CONVERGING WITH THE FLOW AROUND A WEAK UPPER TROUGH JUST OFF THE CALIFORNIA COAST. MOIST CONVERGENCE ZONE AND DEEP SOUTHERLY FLOW ARE STRETCHING FROM CLARK COUNTY ALL THE WAY DOWN TO BAJA CALIFORNIA. ATMOSPHERE IS ALREADY MOIST WITH 1.10 PW OFF THE KDRA SOUNDING THIS MORNING AND THE PW SENSOR AT MCCARRAN AT AN ALMOST 1.5. DEWPOINTS ALONG THE COLORADO RIVER ARE ALREADY IN THE UPPER 60S. RADAR THIS MORNING SHOWS THUNDERSTORMS CONTINUING TO DEVELOP ALONG THIS ZONE IN A NORTH TO SOUTH ORIENTATED LINE. THESE STORMS WILL MOVE NORTH...BUT ENTRAIN ONE AFTER ANOTHER. THE MAIN THREAT WILL BE FLASH FLOODING. A FLASH FLOOD WATCH WAS ISSUED EARLIER TODAY EFFECTIVE UNTIL 9PM. .LAS...FLASH FLOOD WATCH UNTIL 9 PM ALL ZONES. OROW
AZZ001>003-036-CAZ026>029-NVZ013>022-261200- HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE LAS VEGAS NV 930 AM PDT FRI JUL 25 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST CALIFORNIA/SOUTHERN NEVADA/NORTHWEST ARIZONA ...FLASH FLOOD WATCH IN EFFECT UNTIL 9 PM THIS EVENING... .DAY ONE...TODAY THUNDERSTORMS WILL INCREASE IN COVERAGE ACROSS THE AREA THIS AFTERNOON. THE COMBINATION OF HEAVY RAINFALL FROM INDIVIDUAL STORMS AND THE POTENTIAL FOR MULTIPLE STORMS TO MOVE ACROSS THE SAME LOCATION HAS REQUIRED THE ISSUANCE OF A FLASH FLOOD WATCH. THE HIGHEST POTENTIAL FOR FLASH FLOODING EXISTS ACROSS SAN BERNARDINO COUNTY...EASTERN INYO COUNTY...CLARK COUNTY...AND SOUTHERN NYE COUNTY. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. MOISTURE WILL CONTINUE TO CIRCULATE ACROSS THE MOJAVE DESERT AND SOUTHERN GREAT BASIN THROUGH THE PERIOD. ISOLATED TO SCATTERED THUNDERSTORMS WILL CONTINUE FOR PARTS OF THE REGION. .SPOTTER INFORMATION STATEMENT... SKYWARN SPOTTER ACTIVATION WILL LIKELY BE NEEDED THIS AFTERNOON.
The Las Vegas radar (KESX), 102 km away, was scanning. The volume nearest the first event began at 21:30 UTC.
1 flash flood. Local standard time, as filed.
Flash flooding in Peach Springs from a stationary thunderstorm. Route 66 under debris and mud. Trailers moved off foundations and cars floating in flood waters. All washes reported flooded with Santa Fe railroad tracks under water. SR 18 also under water and closed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Arizona in 2003Every state in 2003This day in weather historyWarnings in Arizona, 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: 5367465.