South Dakota, 2010

Flash Flooding and Hail in South Dakota, September 14 to 15, 2010

September 14 to 15, 2010 · NWS ABR · 8 events in 5 counties and zones

Several severe thunderstorms brought large hail up to golfball size along with some flash flooding 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
8

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.

Several severe thunderstorms brought large hail up to golfball size along with some flash flooding to parts of central and northeast South Dakota.

The radar

The Aberdeen radar (KABR), 165 km away, was scanning. The volume nearest the first event began at 02:29 UTC.

Open the radar archive at this moment

Event by event

6 hail, 2 flash flood. Local standard time, as filed.

Hail, Hughes

When
September 14, 8:30 PM CST
Where
Hughes County, 7.1 mi NE of De Grey
Measured
1 in hail
Reported by
Public
Coordinates
44.360, -99.830

Hail, Lyman

When
September 14, 9:05 PM CST
Where
Lyman County, 6.24 mi N of Kennebec
Measured
1.75 in hail
Reported by
Public
Coordinates
43.990, -99.860

Hail, Lyman

When
September 14, 10:13 PM CST
Where
Lyman County, 1 mi E of Oacoma
Measured
1.5 in hail
Reported by
Trained Spotter
Coordinates
43.800, -99.380

Hail, Codington

When
September 14, 11:29 PM CST
Where
Codington County, 0.49 mi W of Henry
Measured
1 in hail
Reported by
Law Enforcement
Coordinates
44.880, -97.460

Hail, Hughes

When
September 15, 7:15 AM CST
Where
Hughes County, 7.85 mi NNW of (Pir)pierre Arpt
Measured
1 in hail
Reported by
Trained Spotter
Coordinates
44.490, -100.320

Hail, Hughes

When
September 15, 7:24 AM CST
Where
Hughes County, 7.85 mi NNW of (Pir)pierre Arpt
Measured
1 in hail
Reported by
Trained Spotter
Coordinates
44.490, -100.320

Flash Flood, Hamlin

When
September 15, 4:20 PM CST to 7:20 PM CST
Where
Hamlin County, 1.47 mi SSW of Thomas to 1.45 mi SSW of Thomas
Cause
Heavy Rain
Reported by
Emergency Manager
Coordinates
44.750, -97.210

Heavy rain caused flooding on the road south of Thomas.

Flash Flood, Clark

When
September 15, 5:26 PM CST to 8:26 PM CST
Where
Clark County, 0.69 mi S of Raymond to 0.9 mi S of Raymond
Cause
Heavy Rain
Reported by
Public
Coordinates
44.910, -97.920

Heavy rain caused the road to flood east of Raymond.

What these are

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

More

Every storm in South Dakota in 2010Every state in 2010This day in weather historyWarnings in South Dakota, September 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 2026-10-01. Each event’s entry at NCEI: 261579, 261580, 261581, 261582, 261583, 261584, 261573, 261575.