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 Salt Lake City, UT wrote its last area forecast discussion before the first event at Aug 8, 2:47 PM MST, 3 hours 38 minutes earlier.
UTAH AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SALT LAKE CITY UT 347 PM MDT FRI AUG 8 2003 .SYNOPSIS...SOUTHWEST FLOW ALOFT WILL PREVAIL OVER THE AREA THROUGH THE WEEKEND. MOISTURE OVER SOUTHERN AND EASTERN UTAH WILL GRADUALLY SPREAD OVER THE REMAINDER OF THE AREA TODAY AND SATURDAY. .DISCUSSION...STARTING TO SEE SOME HEAVY RAIN PRODUCING CELLS IN CENTRAL UTAH. ISSUED A FLS FOR NORTHWEST GARFIELD COUNTY WHERE STORMS HAVE BEEN TRAINING OVER THE SAME AREA FOR A FEW HOURS. WORKING ON A FFW FOR GULCHES SOUTH OF CAINEVILLE. RIDGE ALOFT BUILDS OVER UTAH THE NEXT FEW DAYS WHICH PUSHES THE JET AND STRONGER MID LEVEL FLOW AWAY FROM THE AREA. THE RIDGE WILL BE MOIST WITH DAILY CONVECTION AND A MODERATE HAZARD OF FLASH FLOODING IN THE SOUTHERN AREAS. SLC 1111 CDC 1111 GIBSON .SLC...SMALL STREAM FLOOD ADVISORY UNTIL 500 PM FOR NORTHWEST GARFIELD COUNTY.
IDZ024-025-UTZ001>021-WYZ021-091300- HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE SALT LAKE CITY UT 350 PM MDT FRI AUG 8 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN TWO-THIRDS OF UTAH...EXTREME SOUTHEAST IDAHO AND EXTREME SOUTHWEST WYOMING .DAY ONE... TODAY THUNDERSTORMS OVER SOUTHERN UTAH ARE PRODUCING LOCAL HEAVY RAIN. THERE IS A MODERATE RISK OF FLASH FLOOD THOUGH THIS EVENING. .DAYS TWO THROUGH SEVEN... SATURDAY THROUGH THURSDAY THUNDERSTORMS WILL CONTINUE THROUGH THE WEEKEND WITH THE POTENTIAL FOR FLASH FLOODING...MAINLY OVER SOUTHERN UTAH. WCJIN-WYSW
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
0717 PM MDT FRI AUG 08 2003
TIME(MDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0615 PM 33 E EVANSTON WY 0.88 IN HAIL
08/08/03 UINTA HAIL COVERED THE GROUND
FROM MOUNTAIN VIEW
EXTENDING 6 MILES NORTH.
0349 PM E CAPITOL REEF NP UT FLASH FLOOD
08/08/03 WAYNE FLOODING WAS IN THE PARK
AND AREAS EAST IN THE SANDY
AND PLEASANT CREEK DRAINAGE
BASINS.
XXXThe national radar mosaic for the moment the first event began.
1 flash flood. Local standard time, as filed.
Flash flooding in Garfield county caused Highway 20 to be closed at mile marker 17, as large boulders and mud covered the road. Highway 89 at Circleville Canyon was also closed for a time for the same reason.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Utah in 2003Every state in 2003This day in weather historyWarnings in Utah, 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: 5380001.