As thunderstorms rolled across extreme southeast North Dakota into west central Minnesota, they produced strong winds along a line from Gwinner, North Dakota, to just north of Fergus Falls, Minnesota. The highest wind gusts, 83 mph, were measured just south of the Wahpeton, North Dakota, airport.
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 episode as NWS FGF wrote it up.
As thunderstorms rolled across extreme southeast North Dakota into west central Minnesota, they produced strong winds along a line from Gwinner, North Dakota, to just north of Fergus Falls, Minnesota. The highest wind gusts, 83 mph, were measured just south of the Wahpeton, North Dakota, airport.
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 May 2, 7:40 PM CST, 2 hours 35 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND FORKS ND 840 PM CDT WED MAY 2 2012 .DISCUSSION...FORECAST CHALLENGE CONCERNS PCPN/STORM CHANCES AND INTENSITY. ISOLD SHRA CONTINUE ACROSS NORTHERN FA LIKELY ASSOCIATED WITH WEAK MID LEVEL WAVE. EXPECT THESE SHRA TO CONTINUE THROUGH THE EVENING HOURS HOWEVER NOT SURE OF COVERAGE AFT MIDNIGHT. OF MORE CONCERN IS ISOLATED DEEP CONVECTION TO OUR SW AND S. THESE STORMS TRACKING ALONG SFC AND ELEVATED E-W BOUNDARY ORIENTED ROUGHLY ALONG DAKOTAS BORDER. STRONGEST STORMS ALSO ORIENTED ALONG INSTABILITY GRADIENT FROM S OF BIS TO NE SD. WILL BE MONITORING THESE STORMS CLOSELY AS WARNINGS IN EFFECT WITH STRONGER STORMS. NEGATIVE SHOWALTER INDICES CONFINED TO THE FAR SOUTH SO NOT EXPECTING T FARTHER NORTH. POPS IN GRIDS REFLECT COVERAGE PRETTY WELL SO ONLY CHANGES WERE TO LOWER POPS ACROSS N AND NE. TEMPERATURES OVERALL FITTING WELL WITH TRENDS SO NO CHANGES PLANNED TO MINIMUMS. && .AVIATION...EXPECT VFR CONDITIONS MOST OF THE PERIOD. ANY TSRA THAT COULD AFFECT VSBY WILL LIKELY BE CONFINED TO ALONG AND SOUTH OF INTERSTATE 94 WITH ISOLD SHRA FARTHER NORTH WITH NO REDUCTION TO VSBY EXPECTED. && .FGF WATCHES/WARNINGS/ADVISORIES... ND...NONE. MN...NONE. && VOELKER
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND FORKS ND 505 AM CDT WED MAY 2 2012 MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024- 026>030-038-039-049-052>054-031015- WEST POLK-NORMAN-CLAY-KITTSON-ROSEAU-LAKE OF THE WOODS- WEST MARSHALL-EAST MARSHALL-NORTH BELTRAMI-PENNINGTON-RED LAKE- EAST POLK-NORTH CLEARWATER-SOUTH BELTRAMI-MAHNOMEN- SOUTH CLEARWATER-HUBBARD-WEST BECKER-EAST BECKER-WILKIN- WEST OTTER TAIL-EAST OTTER TAIL-WADENA-GRANT-TOWNER-CAVALIER- PEMBINA-BENSON-RAMSEY-EASTERN WALSH-EDDY-NELSON-GRAND FORKS- GRIGGS-STEELE-TRAILL-BARNES-CASS-RANSOM-SARGENT-RICHLAND- WESTERN WALSH- 505 AM CDT WED MAY 2 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN NORTH DAKOTA...WEST CENTRAL AND NORTHWEST MINNESOTA. .DAY ONE...TODAY AND TONIGHT SCATTERED SHOWERS AND THUNDERSTORMS ARE POSSIBLE LATER THIS EVENING AND OVERNIGHT. NO SEVERE WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY PERIODS OF SHOWERS AND THUNDERSTORMS ARE POSSIBLE FRIDAY INTO THE UPCOMING WEEKEND AS A SERIES OF WEATHER DISTURBANCES MOVE ACROSS THE NORTHERN PLAINS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. ROGERS
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 1027 PM CDT WED MAY 2 2012 NDZ052-030430- SARGENT ND- 1027 PM CDT WED MAY 2 2012 ...SIGNIFICANT WEATHER ADVISORY FOR SARGENT COUNTY UNTIL 1130 PM CDT... AT 1025 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A THUNDERSTORM 19 MILES NORTH OF HECLA...OR 35 MILES NORTHWEST OF BRITTON...MOVING TO THE EAST AT 35 MPH. HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THE STORM. THE STORM WILL BE NEAR... CRETE AROUND 1045 PM CDT. STRAUBVILLE AROUND 1050 PM CDT. STIRUM AROUND 1055 PM CDT. COGSWELL AND BRAMPTON AROUND 1100 PM CDT. BE PREPARED TO TAKE SHELTER IF THE STORMS INTENSIFY AND BECOME SEVERE...OR A WARNING IS ISSUED BY THE NATIONAL WEATHER SERVICE. HOPPES
The Aberdeen radar (KABR), 103 km away, was scanning. The volume nearest the first event began at 04:16 UTC.
5 thunderstorm wind. Local standard time, as filed.
The wind gust was measured by the Gwinner, North Dakota AWOS. Several power poles were snapped along a section line near Gwinner.
Trees were uprooted in Cayuga from the strong winds.
Trees were uprooted near Mantador due to the strong winds.
About one-half mile of power poles were snapped near the intersection of county roads 16 and 1. A barn and silo at a farmstead were heavily damaged. Peak winds were estimated at 80 to 90 mph.
The 2315 CST observation from the Wahpeton airport AWOS came in with a gust to 65 knots. The time was estimated by radar. The 83 mph wind gust was measured by a personal weather station located just south of the airport. A private hanger door was caved in by the wind which caused some damage to an airplane parked just inside the door.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in North Dakota in 2012Every state in 2012This day in weather historyWarnings in North Dakota, May 2012
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: 369119, 369116, 369117, 369667, 369121.