Hail and Damaging Wind in South Dakota, August 11, 2006

Name: Hail and Damaging Wind in South Dakota, August 11, 2006
Start: 2006-08-11T16:10
End: 2006-08-11T19:00
Location: South Dakota

August 11, 2006 · NWS UNR · 8 events in 4 counties and zones

Severe thunderstorms developed across southeast Harding County and moved eastward across southern Perkins County. These storms produced large hail and wind gusts to 70 mph.

Where it happened

Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. 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: $250,000
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 UNR wrote it up.

Severe thunderstorms developed across southeast Harding County and moved eastward across southern Perkins County. These storms produced large hail and wind gusts to 70 mph. 2 to 5 inches of rain accompanied the storms, with an observer northwest of Usta receiving 8 inches of rain. The heavy rain flooded roads and pasture land. The storm passed near Faith and caused wind damage in town.

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 Rapid City, SD wrote its last area forecast discussion before the first event at Aug 11, 1:25 PM MST, 2 hours 45 minutes earlier.

Area forecast discussion, Aug 11, 1:25 PM MST, 2 hours 45 minutes before

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Hazardous weather outlook, Aug 11, 5:00 AM MST, 11 hours 10 minutes before

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In the hours before

Local storm report, Aug 11, 10:47 AM MST, 5 hours 23 minutes before

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Local storm report, Aug 11, 2:05 PM MST, 2 hours 5 minutes before

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Local storm report, Aug 11, 3:32 PM MST, 38 minutes before

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The radar

The Rapid City radar (KUDX), 151 km away, was scanning. The volume nearest the first event began at 23:08 UTC.

Open the radar archive at this moment

Event by event

6 hail, 1 heavy rain, 1 thunderstorm wind. Local standard time, as filed.

Hail, Harding

When: August 11, 4:10 PM MST
Where: Harding County, 6 mi S of Reva
Measured: 0.88 in hail
Reported by: GENERAL PUBLIC
Coordinates: 45.467, -103.083

Hail, Perkins

When: August 11, 4:30 PM MST
Where: Perkins County, 6 mi W of Prairie City
Measured: 0.75 in hail
Reported by: GENERAL PUBLIC
Coordinates: 45.533, -102.933

Ground covered with hail.

Hail, Perkins

When: August 11, 4:35 PM MST to 4:45 PM MST
Where: Perkins County, Prairie City
Measured: 0.88 in hail
Reported by: TRAINED SPOTTER
Coordinates: 45.533, -102.817

Ground covered with hail.

Heavy Rain, Perkins

When: August 11, 5:45 PM MST to 7:00 PM MST
Where: Perkins County, 8 mi NW of Usta
Reported by: COOP STATION
Coordinates: 45.491, -102.476 (the zone’s center; the record gives no point)

Cooperative observer recorded 8 inches of rain from nearly stationary thunderstorm.

Hail, Perkins

When: August 11, 5:56 PM MST to 6:25 PM MST
Where: Perkins County, 8 mi NW of Usta
Measured: 1 in hail
Reported by: TRAINED SPOTTER
Coordinates: 45.300, -102.283

Hail drifts up to 6 inches high.

Hail, Perkins

When: August 11, 6:00 PM MST
Where: Perkins County, 13 mi WNW of Usta
Measured: 2.5 in hail
Reported by: GENERAL PUBLIC
Coordinates: 45.283, -102.417

Thunderstorm Wind, Meade

When: August 11, 6:43 PM MST to 6:55 PM MST
Where: Meade County, Faith
Measured: 61 kt (70 mph) estimated gust
Property damage: $250,000
Reported by: LAW ENFORCEMENT
Coordinates: 45.033, -102.033

Power lines were downed by winds. Several homes were damaged and 2 mobile homes were destroyed by high winds.

Hail, Ziebach

When: August 11, 6:45 PM MST
Where: Ziebach County, 10 mi SW of Red Elm
Measured: 1 in hail
Reported by: TRAINED SPOTTER
Coordinates: 44.950, -101.917

What these are

Hail: Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
Heavy Rain: Rainfall totals unusual for the place and season that did not produce a flood.
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 2006 Every state in 2006 This day in weather history Warnings in South Dakota, August 2006

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: 5529667, 5529668, 5529669, 5529718, 5529714, 5529715, 5529717, 5529716.