South Dakota, 2010Flash Flood and Hail in South Dakota, August 30 to 31, 2010
August 30 to 31, 2010 · NWS FSD · 17 events in 8 counties and zones
Thunderstorms produced damaging winds over part of southeast South Dakota during the late afternoon and evening of August 30th. There were also two reports of large hail and one report of flash flooding.
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
Open the live radar over this ground
- Deaths
- 0
- Injuries
- 0
- Property damage
- $31,000
- 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.
Thunderstorms produced damaging winds over part of southeast South Dakota during the late afternoon and evening of August 30th. There were also two reports of large hail and one report of flash flooding. The severe weather and flash flood reports were near or west of the James River, except for one damaging wind report in eastern Kingsbury County.
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 Sioux Falls, SD wrote its last area forecast discussion before the first event at Aug 30, 2:13 PM CST, 2 hours 7 minutes earlier.
Area forecast discussion, Aug 30, 2:13 PM CST, 2 hours 7 minutes before
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</html>Hazardous weather outlook, Aug 30, 9:04 AM CST, 7 hours 16 minutes before
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</html>Event by event
14 thunderstorm wind, 2 hail, 1 flash flood. Local standard time, as filed.
Thunderstorm Wind, Gregory
- When
- August 30, 4:20 PM CST
- Where
- Gregory County, 8.19 mi ESE of Carlock
- Measured
- 61 kt (70 mph) estimated gust
- Reported by
- Trained Spotter
- Coordinates
- 43.020, -99.290
Thunderstorm winds caused tree damage, including large branches blown down.
Hail, Gregory
- When
- August 30, 4:46 PM CST
- Where
- Gregory County, 0.5 mi W of Herrick
- Measured
- 1 in hail
- Reported by
- Public
- Coordinates
- 43.120, -99.190
Thunderstorm Wind, Gregory
- When
- August 30, 4:48 PM CST
- Where
- Gregory County, 0.5 mi W of Herrick
- Measured
- 56 kt (64 mph) estimated gust
- Reported by
- Public
- Coordinates
- 43.120, -99.190
Thunderstorm winds caused tree damage, including up to 5 inch diameter branches blown down. The winds also blew a tin part of a roof off a house, and blew a hay bale across a road.
Thunderstorm Wind, Charles Mix
- When
- August 30, 4:55 PM CST
- Where
- Charles Mix County, 4.41 mi SSE of Academy
- Measured
- 52 kt (60 mph) estimated gust
- Reported by
- Public
- Coordinates
- 43.390, -99.050
Thunderstorm winds caused tree damage, including branches blown down.
Thunderstorm Wind, Charles Mix
- When
- August 30, 5:05 PM CST
- Where
- Charles Mix County, 3.15 mi NNE of Academy
- Measured
- 56 kt (64 mph) estimated gust
- Property damage
- $5,000
- Reported by
- COOP Observer
- Coordinates
- 43.490, -99.050
Thunderstorm winds blew a wagon into a home, damaging the home. The winds also blew a door off a barn.
Thunderstorm Wind, Davison
- When
- August 30, 5:12 PM CST
- Where
- Davison County, 6.9 mi NNW of Mt Vernon
- Measured
- 61 kt (70 mph) estimated gust
- Reported by
- Trained Spotter
- Coordinates
- 43.810, -98.310
Thunderstorm winds caused tree damage. The winds were accompanied by quarter size hail.
Hail, Davison
- When
- August 30, 5:12 PM CST
- Where
- Davison County, 6.9 mi NNW of Mt Vernon
- Measured
- 1 in hail
- Reported by
- Trained Spotter
- Coordinates
- 43.810, -98.310
Large hail was accompanied by damaging winds.
Thunderstorm Wind, Sanborn
- When
- August 30, 5:20 PM CST
- Where
- Sanborn County, 2.58 mi WSW of Letcher to Letcher
- Measured
- 70 kt (81 mph) estimated gust
- Property damage
- $25,000
- Reported by
- Law Enforcement
- Coordinates
- 43.890, -98.180
Thunderstorm winds destroyed 5 grain bins and caused extensive tree damage. Trees up to 3 feet in diameter were uprooted.
Thunderstorm Wind, Sanborn
- When
- August 30, 5:38 PM CST
- Where
- Sanborn County, 2.1 mi WSW of Forestburg
- Measured
- 61 kt (70 mph) estimated gust
- Reported by
- Storm Chaser
- Coordinates
- 44.010, -98.140
Thunderstorm winds caused tree damage, including several large branches blown down.
Thunderstorm Wind, Charles Mix
- When
- August 30, 5:38 PM CST
- Where
- Charles Mix County, 0.51 mi E of Marty
- Measured
- 56 kt (64 mph) estimated gust
- Reported by
- Trained Spotter
- Coordinates
- 42.980, -98.410
Thunderstorm winds blew the door off a shed and caused tree damage, including large branches blown down.
Thunderstorm Wind, Charles Mix
- When
- August 30, 5:43 PM CST
- Where
- Charles Mix County, 1.01 mi W of Wagner
- Measured
- 61 kt (70 mph) estimated gust
- Property damage
- $1,000
- Reported by
- Trained Spotter
- Coordinates
- 43.080, -98.320
Thunderstorm winds tore 15 feet of soffit from a house.
Thunderstorm Wind, Sanborn
- When
- August 30, 5:46 PM CST
- Where
- Sanborn County, 8.53 mi NNW of Artesian
- Measured
- 56 kt (64 mph) estimated gust
- Reported by
- Public
- Coordinates
- 44.140, -97.960
Thunderstorm winds caused tree damage, including up to 12 inch diameter limbs blown down.
Thunderstorm Wind, Bon Homme
- When
- August 30, 6:00 PM CST
- Where
- Bon Homme County, 4.6 mi SW of Perkins
- Measured
- 52 kt (60 mph) estimated gust
- Reported by
- Public
- Coordinates
- 42.820, -98.080
Thunderstorm winds caused tree damage, including several branches blown down.
Thunderstorm Wind, Douglas
- When
- August 30, 6:02 PM CST
- Where
- Douglas County, 1.51 mi W of Corsica
- Measured
- 52 kt (60 mph) estimated gust
- Reported by
- Amateur Radio
- Coordinates
- 43.420, -98.430
Thunderstorm winds caused minor tree damage.
Thunderstorm Wind, Hutchinson
- When
- August 30, 6:20 PM CST
- Where
- Hutchinson County, 0.85 mi SW of Parkston
- Measured
- 52 kt (60 mph) estimated gust
- Reported by
- Public
- Coordinates
- 43.390, -97.990
Thunderstorm winds caused tree damage, with a few branches blown down.
Thunderstorm Wind, Kingsbury
- When
- August 30, 6:55 PM CST
- Where
- Kingsbury County, 4.4 mi NNW of Oldham
- Measured
- 61 kt (70 mph) estimated gust
- Reported by
- Public
- Coordinates
- 44.280, -97.330
Thunderstorm winds blew over a semi truck, and cause tree damage, including several trees blown down.
Flash Flood, Sanborn
- When
- August 30, 9:40 PM CST to August 31, 12:15 AM CST
- Where
- Sanborn County, 2.3 mi NNE of Letcher to 2.3 mi S of Cuthbert
- Cause
- Heavy Rain
- Reported by
- Emergency Manager
- Coordinates
- 43.930, -98.110
Heavy rain caused flash flooding of several roads and low areas.
- 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.
- Hail and Damaging Winds in Nebraska, August 30, 2010$865,000 · 1 in hail · 13 events
- Tornado and Hail in Wyoming, August 30, 2010$175,000 · EF1 · 7 events
- Lightning Strike in Arkansas, August 30, 2010$100,000 · 1 event
- Damaging Wind in Nebraska, August 30, 2010$41,000 · 70 kt wind · 1 event
- Tropical Storm and Strong Wind in U.S. Virgin Islands, August 30, 2010$30,000 · 6 events
- Damaging Winds in South Dakota, August 30, 20101 injured · 61 kt wind · 13 events
- Flash Flooding and Debris Flow in Puerto Rico, August 30 to 31, 201016 events
- Flash Flood in Louisiana, August 30, 2010$20,000 · 1 event
- Damaging Winds in Nebraska, August 30, 201061 kt wind · 3 events
- Hail in North Dakota, August 30, 20101.75 in hail · 2 events
- Hail in North Dakota, August 30, 20101 in hail · 2 events
- Damaging Winds in Nebraska, August 30, 201060 kt wind · 2 events
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: 257302, 257304, 257306, 257307, 257311, 257312, 257313, 257364, 257366, 257367, 257370, 257373, 257392, 257393, 257395, 257396, 257397.