Hail, Dewey
- When
- May 14, 4:52 PM CST
- Where
- Dewey County
- Measured
- 1.75 in hail
- Coordinates
- 45.000, -101.130
Tornadoes and Hail in South Dakota, May 14, 1991
19 hail, 4 thunderstorm wind, 2 tornado, as filed by the National Weather Service.
Where it happened
Every event with a place to put it. 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
- $250,000
- Crop damage
- None recorded
- Events
- 25
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.
Event by event
19 hail, 4 thunderstorm wind, 2 tornado. Local standard time, as filed.
Hail, Ziebach
- When
- May 14, 4:59 PM CST
- Where
- Ziebach County
- Measured
- 1.75 in hail
- Coordinates
- 44.600, -101.500
Hail, Grant
- When
- May 14, 5:09 PM CST
- Where
- Grant County
- Measured
- 1 in hail
- Coordinates
- 45.220, -96.630
Hail, Dewey
- When
- May 14, 5:10 PM CST
- Where
- Dewey County
- Measured
- 1.75 in hail
- Coordinates
- 45.000, -101.330
Hail, Roberts
- When
- May 14, 5:22 PM CST
- Where
- Roberts County
- Measured
- 0.75 in hail
- Coordinates
- 45.300, -97.030
Hail, Lawrence
- When
- May 14, 5:25 PM CST
- Where
- Lawrence County
- Measured
- 1.75 in hail
- Coordinates
- 44.380, -103.770
Thunderstorm Wind, Walworth
- When
- May 14, 5:28 PM CST
- Where
- Walworth County
- Measured
- 50 kt (58 mph)
- Coordinates
- 45.530, -100.430
Tornado, Perkins
- When
- May 14, 5:40 PM CST
- Where
- Perkins County
- Rating
- F1
- Path length
- 0.5 mi
- Path width
- 300 yd
- Property damage
- $250,000
- Coordinates
- 45.150, -102.200
Hail, Corson
- When
- May 14, 5:50 PM CST
- Where
- Corson County
- Measured
- 2 in hail
- Coordinates
- 45.930, -101.370
Hail, Roberts
- When
- May 14, 5:51 PM CST
- Where
- Roberts County
- Measured
- 0.75 in hail
- Coordinates
- 45.530, -96.970
Tornado, Lawrence
- When
- May 14, 5:59 PM CST
- Where
- Lawrence County
- Rating
- F0
- Path length
- 4 mi
- Path width
- 150 yd
- Coordinates
- 44.500, -103.900
Thunderstorm Wind, Walworth
- When
- May 14, 6:00 PM CST
- Where
- Walworth County
- Measured
- 52 kt (60 mph)
- Coordinates
- 45.530, -100.430
Hail, Roberts
- When
- May 14, 6:13 PM CST
- Where
- Roberts County
- Measured
- 0.75 in hail
- Coordinates
- 45.300, -97.030
Hail, Grant
- When
- May 14, 6:16 PM CST
- Where
- Grant County
- Measured
- 1.75 in hail
- Coordinates
- 45.300, -96.750
Hail, Roberts
- When
- May 14, 6:45 PM CST
- Where
- Roberts County
- Measured
- 1.75 in hail
- Coordinates
- 45.670, -97.050
Hail, Corson
- When
- May 14, 6:59 PM CST
- Where
- Corson County
- Measured
- 1.75 in hail
- Coordinates
- 45.900, -101.200
Hail, Day
- When
- May 14, 7:02 PM CST
- Where
- Day County
- Measured
- 0.75 in hail
- Coordinates
- 45.330, -97.320
Hail, Marshall
- When
- May 14, 7:02 PM CST
- Where
- Marshall County
- Measured
- 1.75 in hail
- Coordinates
- 45.620, -97.420
Hail, Marshall
- When
- May 14, 7:03 PM CST
- Where
- Marshall County
- Measured
- 0.75 in hail
- Coordinates
- 45.800, -97.420
Hail, Lawrence
- When
- May 14, 7:15 PM CST
- Where
- Lawrence County
- Measured
- 1.75 in hail
- Coordinates
- 44.500, -103.850
Hail, Day
- When
- May 14, 7:53 PM CST
- Where
- Day County
- Measured
- 0.75 in hail
- Coordinates
- 45.470, -97.400
Hail, Marshall
- When
- May 14, 8:10 PM CST
- Where
- Marshall County
- Measured
- 1.75 in hail
- Coordinates
- 45.820, -97.220
Hail, Day
- When
- May 14, 8:20 PM CST
- Where
- Day County
- Measured
- 0.75 in hail
- Coordinates
- 45.530, -97.320
Thunderstorm Wind, Edmunds
- When
- May 14, 10:29 PM CST
- Where
- Edmunds County
- Measured
- 52 kt (60 mph)
- Coordinates
- 45.450, -99.670
Thunderstorm Wind, McPherson
- When
- May 14, 11:15 PM CST
- Where
- McPherson County
- Measured
- 52 kt (60 mph)
- Coordinates
- 45.720, -98.950
What these are
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
- 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.
- Tornado
- A violently rotating column of air in contact with the ground and extending from a thunderstorm, filed with its path, width and Fujita or Enhanced Fujita rating from the damage survey.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Tornadoes and Hail in Iowa, May 14, 1991
- Tornadoes and Hail in Illinois, May 14, 1991
- Hail and Damaging Winds in Indiana, May 14, 1991
- Tornado and Hail in North Dakota, May 14, 1991
- Hail in Oklahoma, May 14, 1991
- Hail in Nebraska, May 14, 1991
- Tornado and Damaging Wind in Florida, May 14, 1991
- Damaging Wind in Texas, May 14, 1991
- Damaging Wind in Pennsylvania, May 14, 1991
- Hail in Louisiana, May 14, 1991
- Hail in Kentucky, May 14, 1991
- Hail in Wyoming, May 14, 1991
More
Every storm in South Dakota in 1991Every state in 1991This day in weather historyThe tornado archive for South Dakota, 1991Warnings in South Dakota, May 1991
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: 10123948, 10123949, 10123950, 10123951, 10123952, 10123953, 10123954, 10123955, 10123956, 10123957, 10123958, 10123959, 10123960, 10123961, 10123962, 10123963, 10123964, 10123965, 10123966, 10123967, 10123968, 10124819, 10124820, 10124821, 10124822.