Hail and Damaging Wind in South Dakota, August 1, 2010

Name: Hail and Damaging Wind in South Dakota, August 1, 2010
Start: 2010-08-01T04:30
End: 2010-08-01T16:55
Location: South Dakota

August 1, 2010 · NWS ABR · 3 events in 2 counties and zones

A couple isolated severe thunderstorms brought hail up to the size of tennis balls along with sixty mph winds to parts of 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

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 3

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.

A couple isolated severe thunderstorms brought hail up to the size of tennis balls along with sixty mph winds to parts of 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 1, 2:55 AM CST, 1 hour 35 minutes earlier.

Area forecast discussion, Aug 1, 2:55 AM CST, 1 hour 35 minutes before

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Hazardous weather outlook, Aug 1, 3:33 AM CST, 57 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ABERDEEN SD
433 AM CDT SUN AUG 1 2010

MNZ039-046-SDZ003>011-015>023-033>037-045-048-051-020945-
TRAVERSE-BIG STONE-CORSON-CAMPBELL-MCPHERSON-BROWN-MARSHALL-
ROBERTS-WALWORTH-EDMUNDS-DAY-DEWEY-POTTER-FAULK-SPINK-CLARK-
CODINGTON-GRANT-HAMLIN-DEUEL-STANLEY-SULLY-HUGHES-HYDE-HAND-JONES-
LYMAN-BUFFALO-
433 AM CDT SUN AUG 1 2010 /333 AM MDT SUN AUG 1 2010/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL
MINNESOTA...CENTRAL SOUTH DAKOTA...NORTH CENTRAL SOUTH DAKOTA AND
NORTHEAST SOUTH DAKOTA.

.DAY ONE...TODAY AND TONIGHT

SCATTERED THUNDERSTORMS ARE EXPECTED LATE THIS AFTERNOON AND
DURING THE EVENING HOURS. SOME COULD BE SEVERE WITH LARGE HAIL AND
STRONG WINDS. AN ISOLATED TORNADO OR TWO IS NOT OUT OF THE
QUESTION...MAINLY OVER NORTHEASTERN SOUTH DAKOTA AND WEST CENTRAL
MINNESOTA.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

THUNDERSTORM CHANCES WILL MAINLY BE ACROSS THE SOUTHERN HALF OF
THE STATE ON MONDAY...SOME COULD BE SEVERE OVER EAST CENTRAL SOUTH
DAKOTA. OFF AND ON CHANCES FOR STORMS EXIST THROUGH THE REST OF
THE WEEK.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NECESSARY THIS AFTERNOON AND EVENING
ACROSS CENTRAL AND NORTHEAST SOUTH DAKOTA...AS WELL AS WEST
CENTRAL MINNESOTA.

TMT

In the hours before

Special weather statement, Aug 1, 4:24 AM CST, 6 minutes before

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The radar

The Aberdeen radar (KABR), 69 km away, was scanning. The volume nearest the first event began at 10:30 UTC.

Open the radar archive at this moment

Event by event

2 hail, 1 thunderstorm wind. Local standard time, as filed.

Hail, Day

When: August 1, 4:30 AM CST
Where: Day County, 4.38 mi SW of Webster Muni Arpt
Measured: 1 in hail
Reported by: Public
Coordinates: 45.240, -97.590

Hail, Day

When: August 1, 4:50 AM CST
Where: Day County, 8.77 mi SSE of Webster Muni Arpt
Measured: 2.5 in hail
Reported by: Public
Coordinates: 45.170, -97.430

Thunderstorm Wind, Hyde

When: August 1, 4:55 PM CST
Where: Hyde County, 4.05 mi NE of Highmore Arpt
Measured: 52 kt (60 mph) estimated gust
Reported by: Public
Coordinates: 44.570, -99.370

Sixty mph winds were estimated by the public.

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.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in South Dakota in 2010 Every state in 2010 This day in weather history Warnings in South Dakota, August 2010

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: 257544, 257546, 257547.