Hail and Damaging Winds in South Dakota, June 21, 2007

Name: Hail and Damaging Winds in South Dakota, June 21, 2007
Start: 2007-06-21T01:35
End: 2007-06-21T09:05
Location: South Dakota

June 21, 2007 · NWS ABR · 35 events in 10 counties and zones

A mid level disturbance combined with several surface boundaries, good wind shear, and instability brought several supercell thunderstorms to central and north central South Dakota. Large hail up to the size of softballs occurred with the storms.

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: 35

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.

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 Jun 20, 7:08 PM CST, 6 hours 27 minutes earlier.

Area forecast discussion, Jun 20, 7:08 PM CST, 6 hours 27 minutes before

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Hazardous weather outlook, Jun 20, 4:18 AM CST, 21 hours 17 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ABERDEEN SD
518 AM CDT WED JUN 20 2007

MNZ039-046-SDZ003>011-015>023-033>037-045-048-051-211030-
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-
518 AM CDT WED JUN 20 2007 /418 AM MDT WED JUN 20 2007/

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

THERE IS A CHANCE OF THUNDERSTORMS ACROSS THE AREA THIS AFTERNOON
INTO TONIGHT. SOME OF THESE STORMS MAY BECOME SEVERE WITH LOCALLY
HEAVY RAINFALL...LARGE HAIL...AND DAMAGING WINDS. THERE IS ALSO
THE POTENTIAL FOR AN ISOLATED TORNADO WITH THUNDERSTORMS THAT
DEVELOP.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

CHANCES EXIST FOR MORE THUNDERSTORMS THURSDAY AND THURSDAY NIGHT.
THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS THE AREA
AGAIN ON THURSDAY. THERE IS ALSO A SLIGHT CHANCE OF THUNDERSTORMS
SUNDAY NIGHT AND MONDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NECESSARY THIS AFTERNOON AND EVENING AFTER
3PM.

ECKSTEIN

The radar

The Aberdeen radar (KABR), 100 km away, was scanning. The volume nearest the first event began at 07:33 UTC.

Open the radar archive at this moment

Event by event

28 hail, 4 thunderstorm wind, 3 funnel cloud. Local standard time, as filed.

Hail, Edmunds

When: June 21, 1:35 AM CST
Where: Edmunds County, 1.69 mi NW of Bowdle
Measured: 0.75 in hail
Reported by: Law Enforcement
Coordinates: 45.470, -99.690

Hail, McPherson

When: June 21, 1:35 AM CST
Where: McPherson County, 0.48 mi E of Eureka
Measured: 0.88 in hail
Reported by: Law Enforcement
Coordinates: 45.770, -99.620

Hail, Edmunds

When: June 21, 2:18 AM CST
Where: Edmunds County, 4.18 mi N of Bowdle
Measured: 1 in hail
Reported by: Law Enforcement
Coordinates: 45.510, -99.660

Hail, McPherson

When: June 21, 2:21 AM CST
Where: McPherson County, 0.84 mi NE of Langlake
Measured: 1.75 in hail
Reported by: Trained Spotter
Coordinates: 45.860, -99.210

Hail, Edmunds

When: June 21, 2:27 AM CST
Where: Edmunds County, 1.47 mi NNE of Bowdle
Measured: 1.25 in hail
Reported by: Emergency Manager
Coordinates: 45.470, -99.660

Hail, Edmunds

When: June 21, 2:28 AM CST
Where: Edmunds County, 2.13 mi NNE of Bowdle
Measured: 2.5 in hail
Reported by: Trained Spotter
Coordinates: 45.480, -99.660

Hail, Campbell

When: June 21, 3:45 AM CST
Where: Campbell County, 5.69 mi ESE of Herreid
Measured: 1.5 in hail
Reported by: Public
Coordinates: 45.800, -99.960

Hail, Hyde

When: June 21, 3:45 AM CST
Where: Hyde County, 3.22 mi SW of Holabird
Measured: 1.5 in hail
Reported by: Public
Coordinates: 44.490, -99.630

Hail, Corson

When: June 21, 3:00 AM MST
Where: Corson County, 7.32 mi SSW of Keldron
Measured: 1.75 in hail
Reported by: Trained Spotter
Coordinates: 45.830, -101.870

Thunderstorm Wind, Campbell

When: June 21, 4:00 AM CST
Where: Campbell County, 0.84 mi NE of Artas
Measured: 52 kt (60 mph) estimated gust
Reported by: COOP Observer
Coordinates: 45.890, -99.810

Sixty mph winds blew in a garage door.

Hail, Potter

When: June 21, 4:45 AM CST
Where: Potter County, 16.48 mi NW of Gettysburg
Measured: 1.5 in hail
Reported by: Public
Coordinates: 45.180, -100.200

Thunderstorm Wind, Potter

When: June 21, 4:45 AM CST
Where: Potter County, 16.48 mi NW of Gettysburg
Measured: 61 kt (70 mph) estimated gust
Reported by: Public
Coordinates: 45.180, -100.200

Hail, Potter

When: June 21, 5:00 AM CST
Where: Potter County, 15.65 mi NW of Gettysburg
Measured: 1 in hail
Reported by: Public
Coordinates: 45.170, -100.190

Hail, Corson

When: June 21, 4:15 AM MST
Where: Corson County, 11.25 mi SSE of Black Horse
Measured: 0.88 in hail
Reported by: Trained Spotter
Coordinates: 45.570, -101.290

Funnel Cloud, Potter

When: June 21, 5:20 AM CST
Where: Potter County, 13.8 mi W of Hoven
Reported by: Public
Coordinates: 45.220, -100.080

Several reports of funnel clouds were received from the public in northwest Potter county.

Hail, Dewey

When: June 21, 4:40 AM MST
Where: Dewey County, Timber Lake
Measured: 1 in hail
Reported by: Law Enforcement
Coordinates: 45.430, -101.070

Hail, Potter

When: June 21, 6:30 AM CST
Where: Potter County, 0.69 mi S of Gettysburg
Measured: 0.75 in hail
Reported by: Law Enforcement
Coordinates: 45.010, -99.950

Funnel Cloud, Sully

When: June 21, 6:42 AM CST
Where: Sully County, 2.13 mi NNE of Laurel
Reported by: Law Enforcement
Coordinates: 44.850, -100.310

Law enforcement spotted a funnel cloud east of Sutton Bay Recreation Area.

Hail, Sully

When: June 21, 6:44 AM CST
Where: Sully County, 4.24 mi NW of Clifton
Measured: 4.25 in hail
Reported by: Law Enforcement
Coordinates: 44.700, -100.250

Hail, Sully

When: June 21, 7:00 AM CST
Where: Sully County, 3.03 mi ESE of Gallagher
Measured: 1.5 in hail
Reported by: Public
Coordinates: 44.710, -100.490

Hail, Sully

When: June 21, 7:13 AM CST
Where: Sully County, Onida
Measured: 1.75 in hail
Reported by: Law Enforcement
Coordinates: 44.700, -100.070

Hail, Sully

When: June 21, 7:30 AM CST
Where: Sully County, 3.6 mi NNW of Onida Muni Arpt
Measured: 1 in hail
Reported by: COOP Observer
Coordinates: 44.750, -100.120

Hail, Sully

When: June 21, 7:32 AM CST
Where: Sully County, 11.31 mi E of Onida
Measured: 0.75 in hail
Reported by: Trained Spotter
Coordinates: 44.700, -99.840

Hail, Sully

When: June 21, 7:35 AM CST
Where: Sully County, 18.57 mi ESE of Onida
Measured: 1 in hail
Reported by: Fire Department/Rescue
Coordinates: 44.570, -99.740

Hail, Hughes

When: June 21, 7:40 AM CST
Where: Hughes County, 0.49 mi W of Harrold
Measured: 1 in hail
Reported by: COOP Observer
Coordinates: 44.520, -99.740

Hail, Sully

When: June 21, 7:40 AM CST
Where: Sully County, 18.57 mi ESE of Onida
Measured: 1.75 in hail
Reported by: Fire Department/Rescue
Coordinates: 44.570, -99.740

Thunderstorm Wind, Sully

When: June 21, 7:40 AM CST
Where: Sully County, 18.57 mi ESE of Onida
Measured: 56 kt (64 mph) estimated gust
Reported by: Fire Department/Rescue
Coordinates: 44.570, -99.740

Hail, Hyde

When: June 21, 7:47 AM CST
Where: Hyde County, 0.99 mi W of Holabird
Measured: 1.25 in hail
Reported by: Emergency Manager
Coordinates: 44.520, -99.600

Hail, Hyde

When: June 21, 8:02 AM CST
Where: Hyde County, 4.87 mi S of Highmore
Measured: 0.75 in hail
Reported by: Emergency Manager
Coordinates: 44.450, -99.440

Funnel Cloud, Hyde

When: June 21, 8:15 AM CST
Where: Hyde County, 6.93 mi N of Stephan
Reported by: Storm Chaser
Coordinates: 44.350, -99.440

A funnel cloud was spotted by a storm chaser.

Thunderstorm Wind, Buffalo

When: June 21, 8:20 AM CST
Where: Buffalo County, 9.05 mi N of Ft Thompson
Measured: 52 kt (60 mph) estimated gust
Reported by: Storm Chaser
Coordinates: 44.180, -99.450

Hail, Buffalo

When: June 21, 8:30 AM CST
Where: Buffalo County, 6.93 mi S of Gann Vly
Measured: 1.75 in hail
Reported by: Emergency Manager
Coordinates: 43.930, -98.990

Hail, Buffalo

When: June 21, 9:03 AM CST
Where: Buffalo County, 3.75 mi WNW of Gann Vly
Measured: 0.88 in hail
Reported by: Public
Coordinates: 44.050, -99.070

Hail, Buffalo

When: June 21, 9:03 AM CST
Where: Buffalo County, 6.93 mi S of Gann Vly
Measured: 1.75 in hail
Reported by: Emergency Manager
Coordinates: 43.930, -98.990

Hail, Buffalo

When: June 21, 9:05 AM CST
Where: Buffalo County, 6.99 mi S of Gann Vly
Measured: 1 in hail
Reported by: Public
Coordinates: 43.930, -99.020

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.
Funnel Cloud: A rotating column of cloud extending from a thunderstorm that did not reach the ground.

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

The same day elsewhere

Every storm in South Dakota in 2007 Every state in 2007 This day in weather history Warnings in South Dakota, June 2007

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 2026-09-30. Each event’s entry at NCEI: 44597, 44598, 44599, 44600, 44602, 44604, 44606, 44607, 44609, 45006, 44610, 45008, 44611, 44612, 44591, 44613, 44614, 44593, 44616, 44618, 44623, 44624, 44625, 44626, 44627, 44628, 45010, 44997, 44998, 44596, 45007, 45000, 45001, 45003, 45004.