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 31, 1:54 AM PST, 1 hour 6 minutes earlier.
MOJAVE DESERT/SOUTHERN GREAT BASIN AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LAS VEGAS NV 254 AM PDT THU JUL 31 2003 .SYNOPSIS...A MOIST AND UNSTABLE AIR MASS WILL REMAIN OVER THE MOJAVE DESERT AND SOUTHERN GREAT BASIN THROUGH SATURDAY FOR A CONTINUED THREAT OF AFTERNOON AND EVENING THUNDERSTORMS. THE BEST CHANCES FOR SHOWERS AND THUNDERSTORMS WILL BE CENTRAL NEVADA AND EASTERN CALIFORNIA. TEMPERATURES ARE EXPECTED TO REMAIN SLIGHTLY BELOW NORMAL. .SHORT TERM...SHOWERS ARE BEGINNING TO WIND DOWN THIS MORNING ACROSS THE SOUTHERN NEVADA AND NORTHWEST ARIZONA...BUT SATELLITE IMAGERY HAS SHOWN SOME COOLING TOPS OVER INYO WHERE SOME HEAVIER SHOWERS ARE STILL OCCURRING. EXPECT THIS AREA TO BEGIN DECREASING OVER THE NEXT HOUR OR TWO. WATER VAPOR IMAGERY IS SHOWING SO MID LEVEL DRYING PUSHING INTO THE SOUTHERN CWA WHICH WILL ALSO HELP TO PUSH THE DEEPER MOISTURE NORTH. 00Z/06Z MODELS SHOW THE MAIN FOCUS AREA TODAY WILL BE OVER NORTHERN AND CENTRAL NYE...LINCOLN...ESMERALDA...AND INYO COUNTY IN CALIFORNIA. PW VALUES OVER AN INCH...GOOD THETA E AXIS STRETCHING FROM UTAH INTO CALIFORNIA AND LIS BETWEEN 0/-2. DYNAMICS WILL ALSO BE AIDED FROM A JET STREAK OF 35-45KTS. STORMS OVER THE PAST COUPLE OF DAYS HAVE BEEN PRODUCING HEAVY AMOUNTS OF RAIN AND WITH THE FOCUS SHIFTING FURTHER NORTH TODAY...WILL GO AHEAD AND ISSUED A FLASH FLOOD WATCH FOR THE NORTHERN THIRD OF THE CWA...INCLUDING INYO. MODELS HAD BEEN ADVERTISING SIGNIFICANT DRYING BEGINNING FRIDAY OVER THE SOUTHERN CWA...BUT WATER VAPOR IMAGERY IS SHOWING A LARGE AREA OF MID LEVEL MOISTURE MOVING NORTH FROM MEXICO. MODELS HAVE PICKED UP ON THIS AND WILL LIKELY ADD ENOUGH MOISTURE TO KEEP THE MENTION OF THUNDERSTORMS GOING THROUGH THE WEEKEND. .LONG TERM...MODELS ARE SHOWING PRETTY GOOD RUN TO RUN CONSISTENCY...WHICH MEANS THAT THEY REMAIN INCONSISTENT WITH EACH OTHER. GFS STILL SHOWS SOUTHWESTERLY FLOW BRINGING DRIER AIR IN BEGINNING SUNDAY...WITH PRONOUNCED DRYING BY TUESDAY. ECMWF STILL SHOWS SOUTHEASTERLY OR STRAIGHT SOUTHERLY FLOW THROUGH THE PERIOD...WITH SLUGS OF MOISTURE COMING UP FROM THE GULF OF CALIFORNIA EVERY OTHER DAY OR SO. WILL CONTINUE TO BLEND THE TWO...LEANING SLIGHTLY TOWARD THE ECMWF...AND MAINTAIN SLIGHT CHANCE POPS FOR THE EASTERN HALF OF THE CWFA THROUGH TUESDAY. MADE ONLY MINOR ADJUSTMENTS TO TEMPS AND POPS. .LAS...A FLASH FLOOD WATCH HAS BEEN ISSUED FOR SOUTH CENTRAL NEVADA AND INYO COUNTY IN CALIFORNIA FROM 1100 AM UNTIL 900 PM PDT THIS EVENING. GORELOW/MORGAN
AZZ001>003-036-CAZ026>029-NVZ013>022-311400- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LAS VEGAS NV 500 AM PDT WED JUL 30 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST CALIFORNIA/SOUTHERN NEVADA/NORTHWEST ARIZONA .DAY ONE...TODAY A MOIST AND UNSTABLE AIRMASS WILL LEAD TO ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS TODAY. LOCALLY HEAVY RAIN IS POSSIBLE WITH SOME STORMS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH WEDNESDAY MOISTURE WILL CONTINUE TO CIRCULATE AROUND THE MOJAVE DESERT AND SOUTHERN GREAT BASIN THROUGH FRIDAY. ISOLATED TO SCATTERED AFTERNOON AND NIGHTTIME THUNDERSTORMS WILL CONTINUE FOR PARTS OF THE REGION. BEGINNING SATURDAY...MOISTURE WILL BECOME MORE LIMITED AND THE CHANCES OF THUNDERSTORM ACTIVITY WILL DECREASE. .SPOTTER INFORMATION STATEMENT... SKYWARN ACTIVATION IS NOT ANTICIPATED BUT WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.
The national radar mosaic for the moment the first event began.
1 flash flood. Local standard time, as filed.
Flash flooding closed Highway 395 from Lone Pine to Olancha. Approximatly 30 vehicles were stuck on the roadway between two flooded areas. A truck was stuck in the mud from a land slide that covered the highway. CHP reported major flooding all along the route.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in California in 2003Every state in 2003This day in weather historyWarnings in California, 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: 5367468.