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 9, 2:25 PM MST, 20 minutes earlier.
UTAH AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
324 PM MDT THU AUG 8 2001
SYNOPSIS...A MOIST AND UNSTABLE AIRMASS WILL CONTINUE TO SUPPORT
WIDESPREAD SHOWERS AND THUNDERSTORMS TONIGHT. THE AIRMASS WILL DRY
SLIGHTLY OVER NORTHERN UTAH FRIDAY AND SATURDAY.
DISCUSSION...SLOW MOVING THUNDERSTORMS FIRING OVER CENTRAL AND
SOUTHWEST UTAH. NORTHERN UTAH SLOW TO GET GOING UNDER AN AREA OF
CLOUDS...BUT DE-STABILIZING NOW. SHORTWAVE OVER SOUTH-CENTRAL OREGON
WILL MOVE EAST AND ACROSS IDAHO TONIGHT. WEAK 40 KNOT AT 300 MB JET
WILL INCREASE OVER NORTHERN UTAH DURING THE NIGHT ASSOCIATED WITH
THAT WAVE...LEADING TO DIVERGENCE ALOFT OVER THE STATE. NEW ETA HAS
LESS ACTIVITY OVER NORTHERN UTAH FRIDAY IN WEAK SHORTWAVE
RIDGING...THIS IDEA ACCEPTED. AIRMASS WILL BE SLOW TO DRY SOUTHERN
AND EASTERN UTAH. RIDGE ALOFT POPS UP AGAIN FOR SATURDAY AND SUNDAY
AND SHIFTS EAST. THIS RETURNS SOUTHERLY FLOW TO THE WHOLE AREA ON
MONDAY. MOIST RIDGE OVER THE AREA MOST OF NEXT WEEK. DRIER AIR MAY
WORK INTO WESTERN UTAH TOWARD THE END OF THE WEEK...BEYOND CURRENT
EXTENDED PERIOD.
SLC 3111 CDC 4322 GIBSON
.SLC...FLASH FLOOD WATCH MOST OF EASTERN AND SOUTHERN UTAH THROUGH
1000 PM TONIGHT.The Cedar City radar (KICX), 128 km away, was scanning. The volume nearest the first event began at 21:42 UTC.
1 flash flood. Local standard time, as filed.
The rain swollen Paria River flowed over the bridge near the town of Tropic, temporarily closing it.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Utah in 2001Every state in 2001This day in weather historyWarnings in Utah, August 2001
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: 5275341.