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 Reno, NV wrote its last area forecast discussion before the first event at Sep 4, 1:50 PM PST, 1 hour 40 minutes earlier.
WESTERN NEVADA AND EASTERN CALIFORNIA FORECAST DISCUSSION NATIONAL WEATHER SERVICE RENO NV 250 PM PDT THU SEP 4 2003 WEST WINDS DID NOT MATERIALIZE AND SCATTERED THUNDERSTORMS...SOME WITH LARGE HAIL...HAVE DEVELOPED FROM THE TAHOE AREA TO SOUTHERN LASSEN COUNTY. ISOLATED STORMS IN THE WESTERN NEVADA VALLEYS AS WELL. THIS WILL CONTINUE INTO THE EVENING BUT SHOULD DISSIPATE AFTER SUNSET. ETA HANGS ONTO MORE LOW LEVEL MOISTURE AND INSTABILITY TOMORROW WHILE GFS BRINGS IN A BIT MORE WEST WIND...DRYING OUT THE WESTERN AREAS. GIVEN WHAT HAPPENED TODAY WILL TREND TOWARDS THE MORE PESSIMISTIC AND SLOWER ETA MODEL AND CONTINUE TO MENTION ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS AGAIN TOMORROW ACROSS THE REGION. THESE WILL AGAIN BE DIURNAL IN NATURE. FRIDAY NIGHT AND SATURDAY ATMOSPHERE WILL DRY OUT AS A SHORT WAVE MOVES INTO THE PACIFIC NORTHWEST. THIS FEATURE WILL PUSH A DRY COLD FRONT INTO NORTHERN NEVADA SUNDAY...BRINGING COOLER AND BREEZY TO LOCALLY WINDY CONDITIONS. SG IN THE EXTENDED...MONDAY THROUGH THURSDAY... MODEL RUNS DURING THE DAY TODAY CONT TO WEAK PACIFIC NW TROF. TROF WILL PASS TO THE NORTH EARLY MONDAY WITH A TRAILING COLD FRONT MOVING THROUGH THE CWA. COOLER TEMPERATURES LIKELY TO SETTLE INTO THE CWA WITH WINDS SHIFTING TO THE NORTH. BY THURSDAY WE SEE A BUILD OF A SIGNIFICANT RIDGE IN THE EASTERN PACIFIC WHICH LEAVES A DRY NW FLOW INTO WESTERN NEVADA AND THE NRN SIERRA. JF .REV...NONE.
CAZ070>073-NVZ001>005-051400- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RENO NV 650 AM PDT THU SEP 04 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN NEVADA...THE EASTERN SIERRA AND NORTHEASTERN CALIFORNIA. .DAY ONE...TODAY SCATTERED THUNDERSTORMS WITH LOCALLY HEAVY RAINFALL TODAY ACROSS THE REGION. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY NO HAZARDOUS WEATHER IS EXPECTED. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER CONDITIONS TO THEIR LOCAL NATIONAL WEATHER SERVICE OFFICE.
The Reno radar (KRGX), 85 km away, was scanning. The volume nearest the first event began at 23:29 UTC.
1 flash flood. Local standard time, as filed.
Spotter reported 4-6 inches of water running over U.S. Highway 50 due to heavy thunderstorm rains.
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, September 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: 5337776.