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 Aug 26, 2:20 PM PST, 4 hours 5 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LAS VEGAS NV 320 PM PDT TUE AUG 26 2003 .SYNOPSIS...THERE WILL BE A GRADUALLY DECREASE IN MONSOON MOISTURE ACROSS THE AREA WEDNESDAY THROUGH FRIDAY. HOWEVER...ENOUGH MOISTURE WILL LINGER FOR CONTINUED THREAT OF AFTERNOON AND EVENING SHOWERS AND THUNDERSTORMS. && .SHORT TERM...ALL THE ACTION SOUTH OF SOUTHERN NEVADA RIGHT NOW...THIS AREA SAW THE MOST SUN TO HEAT THE SURFACE THIS MORNING. EFFECTS FROM SHORTWAVE TO OUR NORTH DIMINISHING AS CLOUD SHIELD/SHOWERS LIFT OFF TO THE NORTH. WILL KEEP FLASH FLOOD WATCH UP FOR AREAS TO THE SOUTH AND EAST OF LAS VEGAS. THIS AREA ALSO COVERED BY SEVERE THUNDERSTORM WATCH UNTIL 700 PM. MODELS SIMILAR SHOWING A GRADUALLY DRYING TREND IN THE MID LEVEL AS FLOW ALOFT BECOMES WESTERLY. LOW LEVEL MOISTURE NOT GOING ANYWHERE FAST SO WILL GRADUALLY DECREASE POPS WED-FRI. MODELS DO SHOW SOME WEAK PERTURBATIONS IN WESTERLY FLOW AND OCCASIONAL SPEED MAXIMUMS THAT MAY HELP ORGANIZE STORMS. && .LONG TERM...MODELS CONTINUE TO SHOW RESIDUAL MOISTURE TO REMAIN OVER THE SOUTHERN PORTIONS OF THE CWA THROUGH MUCH OF THE EXTENDED. HIGH PRESSURE SITUATED NEAR AZ/NM BORDER WILL HELP TO CONTINUE THE SOUTHERLY FLOW IN THE AREA. HAVE GONE AHEAD AND KEPT MENTION OF MAINLY AFTERNOON THUNDERSTORMS OVER THE SOUTHERN PORTIONS OF THE CWA SATURDAY AND SUNDAY AND GONE AHEAD AND ADDED THUNDERSTORMS FOR MONDAY AND TUESDAY ALSO. && .LAS...SEVERE THUNDERSTORM WATCH UNTIL 700 PM PDT. FLASH FLOOD WATCH UNTIL 900 PM PDT FOR POTIONS OF FORECAST AREA. PLEASE SEE LATEST STATEMENT FOR DETAILS. && PIERCE
AZZ001>003-036-CAZ026>029-NVZ013>022-271200- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LAS VEGAS NV 220 PM PDT TUE AUG 26 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST CALIFORNIA/SOUTHERN NEVADA/NORTHWEST ARIZONA .DAY ONE...TODAY. ...SEVERE THUNDERSTORM WATCH UNTIL 700 PM PDT FOR SOUTHERN MOHAVE AND EASTERN SAN BERNARDINO... ...FLASH FLOOD WATCH CONTINUES UNTIL 900 PM PDT FOR SOUTHERN MOHAVE ...EASTERN SAN BERNARDINO COUNTY AND FAR SOUTHERN CLARK COUNTIES... SCATTERED SHOWERS AND THUNDERSTORMS...SOME SEVERE ARE POSSIBLE ACROSS PORTIONS OF SOUTHERN MOHAVE AND EASTERN SAN BERNARDINO COUNTY. HEAVY RAIN IS ALSO POSSIBLE. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. SLIGHTLY DRIER AIR WILL MOVE OVER THE NORTHERN PORTION OF THE AREA ON WEDNESDAY FOR A DECREASE IN THUNDERSTORMS...HOWEVER LOCALLY HEAVY RAIN MAY STILL ACCOMPANY THUNDERSTORM ACTIVITY...ESPECIALLY OVER THE SOUTHEAST PORTION. BY THURSDAY THUNDERSTORMS WILL BE CONFINED TO MAINLY NORTHWEST ARIZONA WHICH SHOULD SEE AFTERNOON AND EVENING THUNDERSTORMS INTO SATURDAY. SUNDAY AND MONDAY SHOULD BE DRY ACROSS THE ENTIRE AREA.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAS VEGAS NV
0501 PM PDT TUE AUG 26 2003
TIME(PDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
ASGPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAS VEGAS NV
0502 PM PDT TUE AUG 26 2003
TIME(PDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0255 PM JOSHUA TREE CA FLASH FLOOD
08/26/03 SAN BERNARDINO *** 1 FATAL *** ONE PERSON
WAS KILLED IN A WEATHER
RELATED TRAFFIC ACCIDENT IN
JOSHUA TREE CITY.
0252 PM TWENTYNINE PALMS CA FLASH FLOOD
08/26/03 SAN BERNARDINO 2.19 INCHES IN AN HOUR AND
A HALF. SEVERAL SWIFT WATER
RESCUES WITH WATER RUNNING
OVER MANY ROADS IN
TWENTYNINE PALMS. HIGHWAY
62 COMPLETELY WASHED OUT.
ASGPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAS VEGAS NV
0631 PM PDT TUE AUG 26 2003
TIME(PDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0250 PM TWENTYNINE PALMS CA FLASH FLOOD
08/26/03 SAN BERNARDINO *** 3 FATAL *** FLASH
FLOODING IN TWENTYNINE
PALMS CAUSED A CAR TO BE
WASHED OFF THE ROAD INTO A
DITCH. 3 PEOPLE IN THE
VEHICLE WERE KILLED.
ASGPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAS VEGAS NV
0646 PM PDT TUE AUG 26 2003...CORRECTED TIME
TIME(PDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0238 PM TWENTYNINE PALMS CA FLASH FLOOD
08/26/03 SAN BERNARDINO *** 3 FATAL *** FLASH
FLOODING IN TWENTYNINE
PALMS CAUSED A CAR TO BE
WASHED OFF THE ROAD INTO A
DITCH. 3 PEOPLE IN THE
VEHICLE WERE KILLED.
ASGAZZ002-003-CAZ028-029-270300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LAS VEGAS NV 651 PM PDT TUE AUG 26 2003 ...SEVERE THUNDERSTORM WATCH HAS BEEN CANCELED FOR SOUTHERN MOHAVE COUNTY ARIZONA AND SOUTHEAST SAN BERNARDINO COUNTY CALIFORNIA... THE POTENTIAL FOR SEVERE THUNDERSTORMS HAS DIMINISHED ACROSS SOUTHEAST CALIFORNIA AND WEST CENTRAL ARIZONA THEREFORE THE SEVERE THUNDERSTORM WATCH FOR THE AREA HAS BEEN CANCELED. SOME THUNDERSTORMS MAY CONTINUE TO DEVELOP DURING THE EVENING BUT THE MAIN THREAT WILL BE HEAVY RAIN AND POSSIBLE FLASH FLOODING. A FLASH FLOOD WATCH REMAINS IN EFFECT FOR SOUTHEAST CALIFORNIA AND NORTHWEST ARIZONA THROUGH 9 PM THIS EVENING.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LAS VEGAS NV
0711 PM PDT TUE AUG 26 2003...UPDATED REPORT
TIME(PDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0238 PM TWENTYNINE PALMS CA FLASH FLOOD
08/26/03 SAN BERNARDINO *** 3 FATAL *** FLASH
FLOODING IN TWENTYNINE
PALMS CAUSED A CAR TO BE
WASHED OFF THE ROAD INTO A
DITCH. 2 PEOPLE IN THE
VEHICLE WERE KILLED AND A
RESCUER WAS ALSO KILLED
TYRING TO HELP.
ASGThe national radar mosaic for the moment the first event began.
1 flash flood. Local standard time, as filed.
Moderate to intense rain caused flash flooding in Kingman. Two people became trapped in their vehicles after becoming stuck under a bridge.
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, August 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: 5377478.