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 Sep 6, 9:30 AM MST, 5 hours 15 minutes earlier.
UTAH AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SALT LAKE CITY UT 1030 AM MDT FRI SEP 6 2002 .SYNOPSIS...A VERY MOIST AND SLIGHTLY UNSTABLE AIRMASS WILL BE OVER THE GREAT BASIN THROUGH THE WEEKEND WITH TEMPERATURES GRADUALLY COOLING. .DISCUSSION...EXTENSIVE AREA OF SHOWERS MOVING THROUGH NORTHERN SECTIONS THIS MORNING APPEARS TO BE ASSOCIATED WITH UPPER DISTURBANCE MOVING THROUGH IN UPPER SOUTHWEST FLOW PER LATEST SATELLITE IMAGERY AND MODEL DATA. SOME SHOWERS ELSEWHERE IN FORECAST AREA AT THIS TIME IN VERY MOIST ATMOSPHERE...ALTHOUGH NOT AS NUMEROUS. ONLY EXTREME SOUTHWEST UTAH SEEING ANY BREAKS IN THE CLOUDS. ALTHOUGH WATER VAPOR IMAGERY SHOWS A RELATIVE BREAK BETWEEN CLOUD SHIELD MOVING THROUGH THE NORTH AND A SECOND WAVE MOVING THROUGH SOUTHERN CALIFORNIA...IMPLYING A BRIEF BREAK IN ACTIVITY MID DAY...THE 12Z MESOETA KEEPS PRECIPITATION ACROSS THE ENTIRE AREA ALL DAY TODAY. QUITE A BIT OF LIGHTNING ACTIVITY IN WESTERN ARIZONA AND EVEN OVER SOUTHERN CALIFORNIA WATERS SO MORE ON THE WAY. MODEL MID LEVEL RH FORECASTS DO PICK UP ON THESE TWO WAVES THAT APPEAR IN THE WATER VAPOR. SO WITH THE EXCEPTION OF SHOWERS OVER SOUTHERN IDAHO...THERE MAY BE A SHORT BREAK IN COVERAGE ELSEWHERE FOR THE FEW HOURS BEFORE THINGS FILL IN AGAIN THIS AFTERNOON. EXPECT DISTURBANCE MOVING ACROSS SOUTHERN CALIFORNIA TO ENHANCE ACTIVITY ACROSS THE SOUTHERN HALF OF THE AREA TODAY. NOT A LOT OF INSTABILITY TO WORK WITH GIVEN TROPICAL ATMOSPHERE...ALTHOUGH MAY BE GOOD ENOUGH TO ENHANCE SHOWERS AND PRODUCE SOME THUNDERSTORM ACTIVITY THIS AFTERNOON. AREAS THAT RECEIVED MODERATE RAINFALL OVERNIGHT WILL HAVE TO BE WATCHED CLOSELY THROUGH THE DAY...ESPECIALLY ACROSS THE SOUTH. WET BROAD BRUSH FORECAST FOR TODAY IS GOOD FOR THIS SITUATION...SO WILL NOT MAKE ANY CHANGES. SLC 876 CDC 866 JACKSON .SLC...NONE.
The national radar mosaic for the moment the first event began.
1 flash flood. Local standard time, as filed.
Heavy downpours produced localized flash flooding of small creeks in the Zion National Park area. No damage was reported.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Utah in 2002Every state in 2002This day in weather historyWarnings in Utah, September 2002
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: 5324699.