1 hail, 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 8, 9:30 AM MST, 3 hours 20 minutes earlier.
UTAH AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SALT LAKE CITY UT 1030 AM MDT SUN SEP 8 2002 .SYNOPSIS...A VERY MOIST AND SOMEWHAT UNSTABLE AIRMASS WILL REMAIN IN PLACE TODAY. THE AIRMASS WILL DRY SOMEWHAT ON MONDAY THEN MOISTURE WILL INCREASE AGAIN ON TUESDAY. .DISCUSSION...JET LEVEL IMPULSE GENERATED A BROAD AREA OF RAIN OVER NRN UT THIS MORNING THAT WILL BE MOVING OFF TO THE NORTHEAST WITHIN AN HOUR OR TWO. NEXT FEATURE IS THE UPPER LEVEL TROF ITSELF. THE NORTHERN BRANCH IS SHEARING OFF THROUGH THE NORTHERN ROCKIES LEAVING A CLOSED CIRCULATION OVER SWRN NV. THIS FEATURE IS GENERATING A NEW ROUND OF CONVECTION OVER WEST CENTRAL UT THAT WILL BE LIFTING NEWD TODAY. MODELS HAVE BEEN LIFTING THIS CLOSED FEATURE THROUGH THE NORTHERN PORTION OF THE FORECAST AREA TONIGHT WITH A DRAMATIC DECREASE IN MOISTURE AND INSTABILITY BEHIND IT ON MON. CURRENT WATER VAPOR SATELLITE IMAGERY SHOWS THIS CLOSED CIRCULATION STARTING TO ELONGATE WITH PIECES SHEARING OUT TO THE NORTHEAST BUT ANY EASTWARD MOTION HAS SLOWED. I HAVE MY DOUBTS ABOUT HOW STRONGLY WE WILL DRY TOMORROW AND JUST HOW MUCH OF THE CLOSED CIRCULATION ACTUALLY EJECTS. EVEN IF THE MODELS WERE RIGHT...THEY DO INDICATE THAT A WEAK LOW REMAINS BEHIND OVER SRN CA AND THE FLOW AT LOWER LEVELS BACKS RAPIDLY AROUND TO SELY MON NIGHT WITH MOISTURE SURGING BACK INTO THE AREA TUE. SO WE WILL PROBABLY NEED TO RE-EXAMINE THE FORECAST FOR TUE...AND WILL LEAVE MONDAY AS IS WITH CHANCE POPS. FORECAST FOR TODAY AND TONIGHT IS FINE BUT WILL CONSIDER ISSUING URBAN AND SMALL STREAM ADVISORY FOR THE NORTHERN ZONES. WILL SEE HOW THINGS DEVELOP BY MIDDAY AND MAY UPDATE THEN. SLC 763 CDC 764 WILENSKY .SLC...NONE.
The Salt Lake City radar (KMTX), 223 km away, was scanning. The volume nearest the first event began at 19:50 UTC.
1 hail. Local standard time, as filed.
The storm that produced the F2 tornado in Manti, also dropped 1 3/4 inch (reported as apricot-size) hail on the town.
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: 5325453.