1 thunderstorm wind, as filed by the National Weather Service.
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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 Bismarck, ND wrote its last area forecast discussion before the first event at Aug 21, 2:20 AM CST, 7 hours 20 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BISMARCK ND 320 AM CDT WED AUG 21 2002 FCST PROBLEM TODAY IS PRECIP CHANCES THROUGH FORECAST PERIOD. CLUSTER OF THUNDERSTORMS OVER NERN MONTANA ASSOCIATED WITH A JET MAX AND VORT ENERGY ENCIRCLING THE UPPER LOW OVER NWRN US. THIS JET MAX PROGGED TO MOVE EWD BUT VORT MAX ENERGY SEEMS TO WANT TO LIFT NORTHWARD INTO SASKATCHEWAN. HIGHEST CAPE VALUES AS WELL AS LOWEST LIFTED INDICES ARE OVER ERN MONTANA AND WRN ND TODAY AND TONIGHT. IN GENERAL H500 WEST COAST TROUGH REMAINS OVER THE PACIFIC NORTHWEST THROUGH FRIDAY. SWLY FLOW ALOFT OVER NORTH DAKOTA TODAY BUT RIDGE BUILDS ON THURSDAY AS PACIFIC NORTHWEST LOW BEGINS TO CUT OFF FROM WESTERLIES. THIS WILL LESSEN PRECIP CHANCES OVER ND THURSDAY AND FRIDAY. MEANWHILE SURFACE HIGH OVER SOUTHERN CANADA PUSHES INTO ERN NORTH DAKOTA BY THURSDAY AND CONTINUES UPSLOPE FLOW WITH EASTERLY WINDS KEEPING MOSTLY CLOUDY SKIES OVER THE STATE...AND ALSO STABILIZING THE ATMOSPHERE OVER EASTERN ND. SURFACE HIGH MOVES EASTWARD THURSDAY NIGHT AND SHOULD SEE PARTLY CLOUDY SKIES THURSDAY NIGHT AND FRIDAY. .BIS...NONE VINING
NDZ001>005-009>013-017>023-025-031>037-040>048-050-051-211400- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BISMARCK ND 440 AM CDT WED AUG 21 2002 ...A CHANCE OF THUNDERSTORMS TODAY... LOW PRESSURE FROM SOUTHEASTERN MONTANA TO CENTRAL SOUTH DAKOTA WILL DEVELOP SOUTHWARD INTO THE CENTRAL PLAINS TODAY. UPPER LEVEL ENERGY WILL HELP SET OFF THUNDERSTORMS TODAY ACROSS THE STATE...BUT THUNDERSTORMS ARE NOT EXPECTED TO REACH SEVERE LEVELS. SKYWARN WEATHER SPOTTERS WILL PROBABLY NOT BE NEEDED TODAY WESTERN AND CENTRAL NORTH DAKOTA. VINING
The Bismarck radar (KBIS), 132 km away, was scanning. The volume nearest the first event began at 15:38 UTC.
1 thunderstorm wind. Local standard time, as filed.
An old storage shed destroyed . Hailstones nearly dime size piled a few feet deep in ditches. Neary 2 inches of rain fell with the storm. Many crops leveled by wind driven hail and very heavy rain.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in North Dakota in 2002Every state in 2002This day in weather historyWarnings in North Dakota, August 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: 5310201.