Thunderstorm Wind, Corson
- When
- August 11, 10:06 PM MST
- Where
- Corson County, 11.1 mi S of Bullhead
- Measured
- 54 kt (62 mph) measured gust
- Reported by
- Mesonet
- Coordinates
- 45.610, -101.060
Hail and Damaging Winds in South Dakota, August 11 to 12, 2020
Severe winds gusting up to near eighty mph along with lightning caused some damage in north central and northeast South Dakota.
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
- $1,000
- Crop damage
- None recorded
- Events
- 10
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 happened
The episode as NWS ABR wrote it up.
Severe winds gusting up to near eighty mph along with lightning caused some damage in north central and northeast South Dakota.
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 Aberdeen, SD wrote its last area forecast discussion before the first event at Aug 11, 4:23 PM MST, 5 hours 43 minutes earlier.
Area forecast discussion, Aug 11, 4:23 PM MST, 5 hours 43 minutes before
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The Bismarck radar (KBIS), 131 km away, was scanning. The volume nearest the first event began at 05:06 UTC.
Event by event
8 thunderstorm wind, 1 lightning, 1 hail. Local standard time, as filed.
Thunderstorm Wind, Corson
- When
- August 11, 10:29 PM MST
- Where
- Corson County, 4.8 mi WNW of Mc Laughlin
- Measured
- 68 kt (78 mph) measured gust
- Reported by
- Mesonet
- Coordinates
- 45.850, -100.910
Thunderstorm Wind, Corson
- When
- August 11, 10:40 PM MST
- Where
- Corson County, 2.37 mi SE of Mc Laughlin
- Measured
- 51 kt (59 mph) measured gust
- Reported by
- Mesonet
- Coordinates
- 45.800, -100.780
Thunderstorm Wind, McPherson
- When
- August 12, 12:53 AM CST
- Where
- McPherson County, 4.38 mi ESE of Eureka
- Measured
- 65 kt (75 mph) estimated gust
- Reported by
- Trained Spotter
- Coordinates
- 45.740, -99.550
Estimated seventy-five mph winds blew the roof off a wood frame quonset with additional roof damage on a second outbuilding.
Thunderstorm Wind, McPherson
- When
- August 12, 12:53 AM CST
- Where
- McPherson County, 4.17 mi N of Hillsview
- Measured
- 57 kt (66 mph) measured gust
- Reported by
- Mesonet
- Coordinates
- 45.730, -99.560
Lightning, McPherson
- When
- August 12, 1:26 AM CST
- Where
- McPherson County, 1.6 mi ESE of Eureka
- Property damage
- $1,000
- Reported by
- Public
- Coordinates
- 45.760, -99.600
Lightning struck the roof of a garage, putting a large hole in it. There was smoke, but no fire.
Thunderstorm Wind, Day
- When
- August 12, 3:00 AM CST
- Where
- Day County, 5.21 mi SSE of Pierpont
- Measured
- 63 kt (72 mph) measured gust
- Reported by
- Mesonet
- Coordinates
- 45.430, -97.790
Thunderstorm Wind, Day
- When
- August 12, 3:40 AM CST
- Where
- Day County, 4.86 mi N of Waubay
- Measured
- 52 kt (60 mph) estimated gust
- Reported by
- CoCoRaHS
- Coordinates
- 45.400, -97.310
Sixty mph winds were estimated.
Hail, Day
- When
- August 12, 3:40 AM CST
- Where
- Day County, 4.86 mi N of Waubay
- Measured
- 0.88 in hail
- Reported by
- CoCoRaHS
- Coordinates
- 45.400, -97.310
Thunderstorm Wind, Roberts
- When
- August 12, 3:50 AM CST
- Where
- Roberts County, 1.19 mi NW of Summit
- Measured
- 59 kt (68 mph) measured gust
- Reported by
- Mesonet
- Coordinates
- 45.310, -97.050
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.
- Lightning
- A lightning strike that killed, injured or caused damage.
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Rip Current in Michigan, August 11, 2020
- Flash Flooding and Damaging Winds in Mississippi, August 11 to 13, 2020
- Hail and Damaging Winds in Georgia, August 11 to 12, 2020
- Damaging Wind and Lightning Strikes in Florida, August 11, 2020
- Hail and Damaging Winds in North Dakota, August 11, 2020
- Damaging Winds in Vermont, August 11, 2020
- Flash Flooding in New York, August 11, 2020
- Flash Flooding and Damaging Winds in Arkansas, August 11 to 14, 2020
- Damaging Winds and Lightning Strike in Florida, August 11, 2020
- Damaging Winds in New York, August 11, 2020
- Drought in Utah, August 11 to 31, 2020
- Marine Thunderstorm Winds in Gulf of Mexico, August 11, 2020
More
Every storm in South Dakota in 2020Every state in 2020This day in weather historyWarnings in South Dakota, August 2020
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 2026-10-01. Each event’s entry at NCEI: 915144, 915145, 915146, 915142, 915147, 915127, 915148, 915149, 915155, 915150.