1 thunderstorm wind, 1 hail, 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 Grand Forks, ND wrote its last area forecast discussion before the first event at Aug 23, 12:09 PM CST, 6 hours 11 minutes earlier.
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 109 PM CDT FRI AUG 23 2002 ...FORECAST CHALLENGE WILL BE PRECIPITATION CHANCES OVERNIGHT... .CURRENT OBSERVATIONS... WEAK SURFACE FRONT LOCATED WELL NORTH OF THE BORDER AND IS SLOWLY MOVING SOUTH. SHORT WAVE EVIDENT ON WATER VAPOR IMAGERY ALONG AND AHEAD OF FRONT. A FEW LIGHTNING STRIKES HAVE BEEN NOTED ALONG FRONT. DEWPOINTS ACROSS AREA REMAIN IN THE MID 60S WITH ALL MODELS UNDERDOING THE LOW LEVEL MOISTURE. .SHORT TERM... MAIN CHALLENGE IS THUNDER OVERNIGHT. SOME LOW LEVEL MOISTURE PRESENT BUT LIMITED ABOVE THIS LAYER. SOME WEAK SURFACE/850MB CONVERGENCE AND INSTABILITY TONIGHT. WILL PUT ISOLATED MENTION ACROSS MUCH OF THE FORECAST AREA(FA) WITH SLIGHTLY HIGHER POPS ACROSS NORTHWEST MINNESOTA. .MID TERM... WEAK SURFACE HIGH WILL PUSH FRONT SOUTH OF FA ON SATURDAY AND WILL KEEP PRECIPITATION OUT OF THE REGION UNTIL SUNDAY NIGHT. BY SUNDAY NIGHT...UPPER LEVEL LOW EJECTS OUT OF THE PACIFIC NORTHWEST AND INTO THE NORTHERN HIGH PLAINS. SEVERAL WAVES EXPECTED TO ROTATE AROUND SYSTEM AND WILL BRING CHANCE OF THUNDERSTORMS TO THE RED RIVER VALLEY AND AREAS WEST INTO MONDAY...HOWEVER MOISTURE WILL BE LIMITED WITH A BLOCKING PATTERN TO THE SOUTH. .EXTENDED FORECAST... ECMWF IS ODD MODEL OUT IS SHOWING AMPLIFYING UPR LOW AND COLD AIR DROPPING SOUTHEAST TOWARD NRN MN BY 12Z THU. NCEP ENSEMBLES/NOGAPS/MRF/CANADIAN ALL GO AGAINST THIS SHOWING MAIN POLAR JET AND COLD AIR WELL NORTH ACROSS NRN CANADA WITH MUCH WEAKER 50H SYSTEMS DROPPING THRU NRN PLAINS TUE-WED TIME FRAME. CANADIAN AND NOGAPS ARE EVEN WEAKER THAN THE MRF AND WOULD IMPLY ONLY SMALL CHANCES OF PCPN TUE-WED VERSUS HEAVIER QPF OF MRF. BELIEVE THIS MAY BE RIGHT. WILL HOWEVER STILL KEEP CHC IN PER CURRENT EXTENDED FOR TUE-WED...THEN DRY THU-FRI AND STILL MILD WITH NEAR NORMAL TEMPS. .FGF...NONE DONAVON/RIDDLE
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND FORKS, ND
630 PM CDT FRI AUG 23 2002
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0628 PM 2 E MOUNTAIN ND 1.00 INCH HAIL
08/23/02 PEMBINA
JHPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND FORKS, ND
632 PM CDT FRI AUG 23 2002
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0620 PM 5 NW BISBEE ND .75 INCH HAIL
08/23/02 TOWNER REPORTED BY CO-OP OBSERVER.
0630 PM 3 S MOUNTAIN ND TORNADO
08/23/02 PEMBINA REPORTED BY CO-OP OBSERVER.
DPORTERPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND FORKS, ND
640 PM CDT FRI AUG 23 2002
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0635 PM 2 E MOUNTAIN ND 2.00 INCH HAIL
08/23/02 PEMBINA REPORTED BY CO-OP
OBSERVER.
DPORTERPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND FORKS, ND
653 PM CDT FRI AUG 23 2002
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0600 PM 2 NE CONCRETE ND .88 INCH HAIL
08/23/02 PEMBINA REPORTED BY PUBLIC.
0615 PM 5 NW BISBEE ND .75 INCH HAIL
08/23/02 TOWNER HAIL FELL FOR 15 MINUTES
DPORTERPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND FORKS, ND
656 PM CDT FRI AUG 23 2002
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0650 PM 2 NW CRYSTAL ND 1.75 INCH HAIL
08/23/02 PEMBINA REPORTED BY CO-OP
OBSERVER.
DPORTERPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND FORKS, ND
708 PM CDT FRI AUG 23 2002
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0702 PM HOOPLE ND .75 INCH HAIL
08/23/02 WALSH REPORTED BY FIRE
DEPARTMENT.
DPORTERThe Fargo/Grand Forks radar (KMVX), 143 km away, was scanning. The volume nearest the first event began at 00:22 UTC.
1 thunderstorm wind, 1 hail. Local standard time, as filed.
Many trees and branches were blown down across town. Shingles were torn off roofs and power poles were snapped. Some metal roofs, including the lumberyard storage building, were damaged in town. Some newly laid sod was blown onto a street. One tree fell on a garage and another fell on a pickup in the park.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Minnesota in 2002Every state in 2002This day in weather historyWarnings in Minnesota, 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: 5317538, 5317537.