1 thunderstorm wind, as filed by the National Weather Service.
Every event with a place to put it. 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 Great Falls, MT wrote its last area forecast discussion before the first event at Sep 3, 2:00 PM MST, 2 hours 7 minutes earlier.
SOUTHWEST AND NORTH CENTRAL MONTANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREAT FALLS MT
300 PM MDT TUE SEP 3 2002
.SHORT TERM...OVERALL PATTERN TO REMAIN STATIC THROUGH THE PERIOD.
SOUTHWEST FLOW ALOFT WILL PERSIST WITH PLENTY OF MOISTURE BEING
ADVECTED INTO THE AREA. A FEW THUNDERSTORMS ALREADY OCCURRING OVER
BEAVERHEAD COUNTY AND NEAR YELLOWSTONE PARK. MODELS MOVE A SHORT
WAVE ACROSS THE AREA LATER THIS EVENING AND WILL GO WITH SCATTERED
POPS FOR TONIGHT. REMAINDER OF FORECAST PERIOD SHOULD SEE SCATTERED
CONVECTIVE ACTIVITY DEVELOPING LATE EACH AFTERNOON AND CONTINUING
INTO THE EVENING HOURS AS WEAK IMPULSES MOVE THROUGH. TEMPERATURES
COOL A LITTLE EACH DAY WITH READINGS AT OR SLIGHTLY BELOW SEASONAL
NORMS. EMANUEL
.EXTENDED...MODELS CONTINUE THE PERSISTENT UNSTABLE SOUTHWEST
FLOW ALOFT THROUGH PERIOD. THOUGH ECWMF A BIT FASTER IN BRINGING
UPPER LOW ACROSS SOUTHERN MONTANA...WHILE MRF HAS WEAK UPPER RIDGE
OVER AREA EARLY IN THE PERIOD...THEN BRING UPPER LOW ACROSS SOUTHWEST
MONTANA BY TUESDAY. THIS WAS DIFFERENT THAN THE MORE ZONAL FLOW
OF THE EARLIER MODEL RUNS. THUS TEMPERATURES WILL BE NEAR SEASONAL
AVERAGES WITH SCATTERED PRECIPITATION. WILL KEEP EYE ON LATEST MRF
RUN AS IT HINTING TOWARD A GOOD RAIN EVENT BY TUESDAY...ESPECIALLY
ACROSS THE SOUTHERN PART OF THE STATE. WILLIAMSON DC
.CCF NUMBERS
GTF BB 052/080 048/073 045 08433
BBUBB 070/044 072/048 074/048 074/048 074 33033333313
CTB BB 048/074 043/067 041 08433
BBUBB 065/040 070/047 069/047 069/047 069 33033333303
HLN BB 054/086 051/080 050 08433
BBUBB 075/047 073/047 073/047 073/047 073 33033333313
BZN BB 047/083 046/075 042 08433
BBUBB 070/040 074/046 076/046 076/046 076 33033333313
WEY BB 038/076 038/066 037 08334
BBUBB 065/032 069/037 069/037 069/037 069 33034343414
DLN BB 050/081 050/074 041 08333
BBUBB 072/038 072/045 071/045 071/045 071 33033333313
HVR BB 053/082 050/075 046 08533
BBUBB 071/046 073/048 075/048 075/048 075 33033333313
LWT BB 052/082 047/075 046 08533
BBUBB 070/044 073/047 073/047 073/047 073 33033333313
.TFX...RED FLAG WARNING FOR FIRE ZONES 116 AND 118 until 9 pm.The Great Falls radar (KTFX), 122 km away, was scanning. The volume nearest the first event began at 23:07 UTC.
1 thunderstorm wind. Local standard time, as filed.
A severe thunderstorm produced a 70 mph wind gust at Moccasin 17NE. A few shingles were blown off a roof.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Montana in 2002Every state in 2002This day in weather historyWarnings in Montana, 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: 5316772.