Hail and Damaging Wind in South Dakota, July 1, 2007

Name: Hail and Damaging Wind in South Dakota, July 1, 2007
Start: 2007-07-01T16:38
End: 2007-07-01T17:20
Location: South Dakota

July 1, 2007 · NWS ABR · 4 events in 2 counties and zones

Convergence along a lee trough/surface low combined with moderate instability resulted in a few severe storms in north central 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: 4

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.

Convergence along a lee trough/surface low combined with moderate instability resulted in a few severe storms in north central 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 Jul 1, 1:17 PM MST, 3 hours 21 minutes earlier.

Area forecast discussion, Jul 1, 1:17 PM MST, 3 hours 21 minutes before

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Hazardous weather outlook, Jul 1, 3:06 AM MST, 13 hours 32 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ABERDEEN SD
506 AM CDT SUN JUL 1 2007

MNZ039-046-SDZ003>011-015>023-033>037-045-048-051-021015-
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-
506 AM CDT SUN JUL 1 2007 /406 AM MDT SUN JUL 1 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

THUNDERSTORMS MAY SKIRT THE FAR NORTHEAST CORNER OF SOUTH
DAKOTA...INCLUDING WEST CENTRAL MINNESOTA...LATE TONIGHT...MAINLY
ALONG AND NORTH OF A LINE FROM MCLAUGHLIN TO MILBANK. SEVERE
THUNDERSTORMS ARE NOT ANTICIPATED TODAY OR TONIGHT.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

BY MONDAY EVENING...MORE THUNDERSTORMS MAY DEVELOP ALONG A
COLD FRONT SLIPPING SOUTHWARD ACROSS CENTRAL SOUTH DAKOTA
STRETCHING EASTWARD INTO EAST CENTRAL SOUTH DAKOTA MONDAY NIGHT.
THUNDERSTORMS WOULD LIKELY DEVELOP JUST NORTH AND WEST OF THIS
FORECAST AREA AFTER 7 PM CDT MONDAY EVENING...AND MOVE SOUTH AND
EAST INTO THIS FORECAST AREA. LARGE HAIL...DAMAGING WINDS AND AN
ISOLATED TORNADO ARE THE THREATS ASSOCIATED WITH THUNDERSTORMS
THAT DEVELOP MONDAY EVENING AND MONDAY NIGHT.

A SECONDARY COLD FRONTAL BOUNDARY WILL SWEEP THROUGH THE FORECAST
AREA TUESDAY EVENING AND NIGHT...ONCE AGAIN...INTRODUCING THE
POTENTIAL FOR A FEW THUNDERSTORMS TO DEVELOP...WITH LARGE HAIL
BEING THE MAIN THREAT TUESDAY NIGHT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY OR TONIGHT.

DORN

The radar

The Bismarck radar (KBIS), 105 km away, was scanning. The volume nearest the first event began at 23:36 UTC.

Open the radar archive at this moment

Event by event

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

Hail, Corson

When: July 1, 4:38 PM MST
Where: Corson County, Mc Intosh
Measured: 0.88 in hail
Reported by: Trained Spotter
Coordinates: 45.920, -101.350

Thunderstorm Wind, Dewey

When: July 1, 4:40 PM MST
Where: Dewey County, 6.23 mi N of Isabel
Measured: 61 kt (70 mph) estimated gust
Reported by: Trained Spotter
Coordinates: 45.470, -101.430

Hail, Corson

When: July 1, 4:51 PM MST
Where: Corson County, 13.36 mi S of Black Horse
Measured: 1 in hail
Reported by: Public
Coordinates: 45.530, -101.430

Hail, Dewey

When: July 1, 5:20 PM MST
Where: Dewey County, 4.23 mi SE of Firesteel
Measured: 0.75 in hail
Reported by: Public
Coordinates: 45.380, -101.230

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 2007 Every state in 2007 This day in weather history Warnings in South Dakota, July 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: 51851, 51854, 51852, 51853.