Thunderstorm Wind, Benson
- When
- July 21, 12:15 AM CST
- Where
- Benson County, 11 mi S of Esmond
- Property damage
- $500
- Reported by
- GENERAL PUBLIC
- Coordinates
- 47.867, -99.767
Tree branches were blown down.
Flash Flood and Hail in North Dakota, July 21, 2001
14 thunderstorm wind, 2 hail, 1 flash flood, as filed by the National Weather Service.
Where it happened
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.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- $4,000
- Crop damage
- None recorded
- Events
- 17
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.
What forecasters said that day
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 Jul 20, 7:18 PM CST, 4 hours 57 minutes earlier.
Area forecast discussion, Jul 20, 7:18 PM CST, 4 hours 57 minutes before
FORECAST DISCUSSION FOR EASTERN NORTH DAKOTA AND NORTHWEST MINNESOTA NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 815 PM FRI JUL 20 2001 EVOLUTION AND TRACK OF NE MT MCS IS THE FCST PROBLEM TONIGHT. RUC ANALYSIS SHOWS MCS IN NE MT ASSOC WITH AREA OF 70H WARM ADVECTION WITH 30KT 85H MOIST FLOW FEEDING INTO INTO IT. ALSO THIS IS AIDED BY VORT MAX MOVING THRU CNTRL MT INTO SASK. MCS IS TRACKING ALONG THICKNESS FIELDS...WHICH EVENTUALLY TURN MORE SOUTHEAST WITH TIME OVER CWFA. QUESTION IS CAN MCS SUSTAIN ITSELF SEVERE-WISE AS IT MOVES TOWARD CWFA AFTER 06Z. ATMOSPHERE OVER CWFA...WHILE MOIST...IS NOT THAT UNSTABLE COMPARED TO PAST NIGHTS. 85H MOIST CONVERGENCE IS VERY WEAK WITH NRN PARTS OF THE CWFA IN A 85H COL. K INDICES PROG TO ACTUALLY DROP TO NR 20 IN NRN CWFA OVERNIGHT. SEVERAL POSSIBILITIES OVERNIGHT...THETA-E SHOWS BEST JUICE OVR FAR SW ND AND NRN SD AND THIS MCS MAY TRY TO DROP SOUTHEAST AND FEED ON THIS AIR OVERNIGHT. THUS WOULD BRING BEST SVR BET SW CWFA AND POINTS SOUTH OF THERE. OR MCS WILL TRACK EAST AND EVENTUALLY WEAKEN AS IT ENCOUNTERS LESS FAVORABLE ENVIRONMENT OVER ERN ND AFTER 06Z. BUT WITH HEAVY RAIN BEING A THREAT. ATTM...WE ARE LEADING TOWARD THIS SOLN. ONLY TIME WILL TELL. WITH UNCERTAINITIES AND ALL...WILL JUST LEAVE FFA ALONE. WILL TWEEK SOME TIME WORDING OF TSRA IN THE ZONES TO AFTER MIDNIGHT OR LATE. .FGF...FLASH FLOOD WATCH TONIGH/T ALONG AND NORTH OF A VALLEY CITY TO HILLSBORO TO BEMIDJI LINE. RIDDLE
The radar
The national radar mosaic for the moment the first event began.
Event by event
14 thunderstorm wind, 2 hail, 1 flash flood. Local standard time, as filed.
Thunderstorm Wind, Benson
- When
- July 21, 12:45 AM CST
- Where
- Benson County, Maddock
- Measured
- 56 kt (64 mph)
- Reported by
- GENERAL PUBLIC
- Coordinates
- 47.967, -99.533
Tree branches were blown down.
Thunderstorm Wind, Eddy
- When
- July 21, 1:21 AM CST
- Where
- Eddy County, 5 mi W of New Rockford
- Measured
- 61 kt (70 mph)
- Reported by
- GENERAL PUBLIC
- Coordinates
- 47.683, -99.233
Many trees were blown over.
Hail, Benson
- When
- July 21, 1:39 AM CST
- Where
- Benson County, 3 mi E of Oberon
- Measured
- 0.75 in hail
- Reported by
- GENERAL PUBLIC
- Coordinates
- 47.917, -99.133
Hail, Griggs
- When
- July 21, 2:00 AM CST
- Where
- Griggs County, Binford
- Measured
- 0.75 in hail
- Reported by
- GENERAL PUBLIC
- Coordinates
- 47.567, -98.350
Thunderstorm Wind, Nelson
- When
- July 21, 2:00 AM CST
- Where
- Nelson County, Mc Ville
- Measured
- 61 kt (70 mph)
- Reported by
- GENERAL PUBLIC
- Coordinates
- 47.767, -98.167
Trees were blown down.
Thunderstorm Wind, Eddy
- When
- July 21, 2:00 AM CST
- Where
- Eddy County, Sheyenne
- Property damage
- $500
- Reported by
- GENERAL PUBLIC
- Coordinates
- 47.833, -99.117
Trees were blown down.
Thunderstorm Wind, Barnes
- When
- July 21, 2:10 AM CST
- Where
- Barnes County, Dazey
- Measured
- 56 kt (64 mph)
- Reported by
- GENERAL PUBLIC
- Coordinates
- 47.183, -98.200
Flash Flood, Ramsey
- When
- July 21, 2:30 AM CST
- Where
- Ramsey County, Devils Lake
- Reported by
- GENERAL PUBLIC
- Coordinates
- 48.269, -98.720 (the zone’s center; the record gives no point)
Heavy rains flooded underpasses, and several cars stalled in the water.
Thunderstorm Wind, Ramsey
- When
- July 21, 2:30 AM CST
- Where
- Ramsey County, Crary
- Property damage
- $500
- Reported by
- GENERAL PUBLIC
- Coordinates
- 48.067, -98.633
Tree branches were blown down.
Thunderstorm Wind, Benson
- When
- July 21, 2:30 AM CST
- Where
- Benson County, Oberon
- Property damage
- $500
- Reported by
- GENERAL PUBLIC
- Coordinates
- 47.917, -99.200
A large tree was blown down.
Thunderstorm Wind, Steele
- When
- July 21, 2:45 AM CST
- Where
- Steele County, Finley
- Measured
- 52 kt (60 mph)
- Reported by
- GENERAL PUBLIC
- Coordinates
- 47.517, -97.850
Thunderstorm Wind, Traill
- When
- July 21, 3:00 AM CST
- Where
- Traill County, 5 mi E of Mayville
- Property damage
- $1,000
- Reported by
- NWS EMPLOYEE(OFF DUTY)
- Coordinates
- 47.500, -97.217
Trees were blown down.
Thunderstorm Wind, Ransom
- When
- July 21, 3:00 AM CST
- Where
- Ransom County, Mc Leod
- Measured
- 52 kt (60 mph)
- Reported by
- GENERAL PUBLIC
- Coordinates
- 46.400, -97.300
Thunderstorm Wind, Cass
- When
- July 21, 3:00 AM CST
- Where
- Cass County, Page
- Measured
- 61 kt (70 mph)
- Reported by
- GENERAL PUBLIC
- Coordinates
- 47.150, -97.583
Thunderstorm Wind, Barnes
- When
- July 21, 3:30 AM CST
- Where
- Barnes County, Valley City
- Property damage
- $500
- Reported by
- GENERAL PUBLIC
- Coordinates
- 46.917, -98.000
Large branches were blown down.
Thunderstorm Wind, Richland
- When
- July 21, 3:55 AM CST
- Where
- Richland County, 8 mi W of Walcott
- Property damage
- $500
- Reported by
- GENERAL PUBLIC
- Coordinates
- 46.550, -97.100
Large branches were blown down.
What these are
- Thunderstorm Wind
- Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
- Flash Flood
- Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Heat in Illinois, July 21 to 24, 2001
- Heat in Missouri, July 21 to 24, 2001
- Heat in Wisconsin, July 21 to 22, 2001
- Lightning Strike in Michigan, July 21, 2001
- Flash Flood and Flood in Illinois, July 21, 2001
- Flash Flooding and Hail in Montana, July 21 to 22, 2001
- Lightning Strike in Alabama, July 21, 2001
- Damaging Wind in South Dakota, July 21, 2001
- Damaging Winds in Michigan, July 21, 2001
- Hail and Damaging Winds in Minnesota, July 21, 2001
- Flood in Alaska, July 21 to 23, 2001
- Damaging Wind in Florida, July 21, 2001
More
Every storm in North Dakota in 2001Every state in 2001This day in weather historyWarnings in North Dakota, July 2001
Sources
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: 5259876, 5259877, 5259878, 5259879, 5259880, 5259881, 5259882, 5259883, 5259884, 5259885, 5259886, 5259887, 5259888, 5259889, 5259963, 5259964, 5259965.