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 Jul 24, 8:30 AM PST, 5 hours earlier.
WESTERN NEVADA AND EASTERN CALIFORNIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE RENO NV
930 AM PDT THU JUL 24 2003
WEAK UPPER VORT MAX OVER NE NV HELPED FOCUS STRONG TSTMS OVER LASSEN
COUNTY OVERNIGHT. MESO HIGH FORMED THIS MORNING OVER WRN NV WITH LOW
LEVEL COOLING FM YSTDYS SHOWERS AND SHOULD HELP SUPPRESS CONVECTION
FOR MORNING HOURS. BY AFTN ANOTHER VERY ACTIVE SCENARIO EXPECTED
WITH VERY MOIST AIRMASS IN PLACE. PWS OF 1.30 ON REV SOUNDING AND
SFC DEWPOINTS IN THE 50S TO LOWER 60S SHOULD SET STAGE FOR POTENTIALLY
HEAVY RAINFALL WITH ANY THUNDERSTORMS. BEST AREA OF FOCUS THIS AFTN
OVER W CENTRAL NV WHERE LOW LEVEL CONVERGENCE COUPLES WITH WEAK UPPER
DIVERGENCE. K INDEX IN 40S FORECAST OVER MUCH OF WRN NV WITH BEST
INSTABLITY OVER MINERAL AND MONO COUNTIES WITH MINUS 2 TO MINUS 4 LIS
AND 850-700 MB THETA E RIDGE AXIS. WILL ISSUE FLASH FLOOD WATCH FOR
ALL ZONES EAST OF HIGHWAY 395 EXCEPT ALL OF MONO COUNTY FROM NOON
UNTIL 9 PM. SOME DRYING ACROSS NRN ZONES NEXT FEW DAYS BUT STILL
POTENTIAL FOR TSTMS EACH DAY INTO EXTENDED UNDER WEAK FLOW PATTERN.
CYLKE
.REV...FLASH FLOOD WATCH NVZ001..NV004...NV005...CAZ073 FROM
NOON UNTIL 9 PM...CAZ070>073-NVZ001>005-251400- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE RENO NV 650 AM PDT THU JUL 24 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN NEVADA...THE EASTERN SIERRA AND NORTHEASTERN CALIFORNIA. .DAY ONE...TODAY SCATTERED MAINLY AFTERNOON AND EVENING THUNDERSTORMS ARE EXPECTED OVER THE AREA TODAY. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY A SLIGHT CHANCE OF AFTERNOON AND EVENING THUNDERSTORMS THROUGH THE PERIOD. .SPOTTER INFORMATION STATEMENT... WEATHER SPOTTERS AND EMERGENCY MANAGERS ARE URGED TO MONITOR FORECASTS AND RELATED MESSAGES AND BE PREPARED FOR POSSIBLE ACTIVATION TODAY. IN ADDITION...WEATHER SPOTTERS ARE ASKED TO REPORT SIGNIFICANT WEATHER CONDITIONS TO THEIR LOCAL NATIONAL WEATHER SERVICE OFFICE.
The national radar mosaic for the moment the first event began.
1 flash flood. Local standard time, as filed.
The Lyon County Sheriff reported flash flooding in rural Lyon County about 10 miles southeast of Yerington. Several gravel roads were washed out or covered by debris and needed clearing and/or repair.
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: 5376090.