Hail in South Dakota, June 4, 2020

Name: Hail in South Dakota, June 4, 2020
Start: 2020-06-04T19:18
End: 2020-06-04T20:45
Location: South Dakota

June 4, 2020 · NWS UNR · 5 events in 3 counties and zones

A long-lived supercell thunderstorm tracked southeast from Wyoming, across the central Black Hills, and into southwestern South Dakota before weakening. The storm produced large hail along its path.

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: 5

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.

A long-lived supercell thunderstorm tracked southeast from Wyoming, across the central Black Hills, and into southwestern South Dakota before weakening. The storm produced large hail along its path.

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 Jun 4, 7:09 PM MST, 9 minutes earlier.

Area forecast discussion, Jun 4, 7:09 PM MST, 9 minutes before

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Hazardous weather outlook, Jun 4, 9:56 AM MST, 9 hours 22 minutes before

Hazardous Weather Outlook
National Weather Service Rapid City SD
1056 AM MDT Thu Jun 4 2020

SDZ027-041-WYZ055-051300-
Southern Foot Hills-Fall River-Southern Campbell-
1056 AM MDT Thu Jun 4 2020

This Hazardous Weather Outlook is for portions of southwestern
South Dakota...and northeast Wyoming.

.DAY ONE...Today and Tonight

Thunderstorms will develop this afternoon. Isolated strong to
severe storms are possible with large hail and damaging wind
gusts.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Thunderstorms are possible through early next week.

There is a slight risk of severe thunderstorms Saturday afternoon
and evening. Very large hail and damaging winds will be the main
threat, but isolated tornadoes may occur. Locally heavy rainfall
and flash flooding are also possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today.

&&

Stay tuned to NOAA weather radio for further updates...or check
our web site at weather.gov/rapidcity

SDZ001-002-029-030-042-074-WYZ054-056>058-071-051300-
Harding-Perkins-Southern Black Hills-Custer Co Plains-
Oglala Lakota-Hermosa Foot Hills-Northern Campbell-Western Crook-
Wyoming Black Hills-Weston-Northeastern Crook-
1056 AM MDT Thu Jun 4 2020

This Hazardous Weather Outlook is for portions of northwestern
South Dakota...southwestern South Dakota...the Black Hills of
South Dakota...northeast Wyoming...and the Black Hills of
Wyoming.

.DAY ONE...Today and Tonight

Thunderstorms will develop this afternoon. Scattered strong to
severe storms are possible with large hail and damaging wind
gusts.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Thunderstorms are possible through early next week.

There is a slight to enhanced risk of severe thunderstorms
Saturday afternoon and evening. Very large hail and damaging winds
will be the main threat. Locally heavy rainfall and flash
flooding are also possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today.

&&

Stay tuned to NOAA weather radio for further updates...or check
our web site at weather.gov/rapidcity

SDZ012>014-024>026-028-031-032-043-044-046-047-049-072-073-051300-
Butte-Northern Meade Co Plains-Ziebach-Northern Black Hills-
Northern Foot Hills-Rapid City-Central Black Hills-
Pennington Co Plains-Haakon-Jackson-Bennett-Mellette-Todd-Tripp-
Sturgis/Piedmont Foot Hills-Southern Meade Co Plains-
1056 AM MDT Thu Jun 4 2020 /1156 AM CDT Thu Jun 4 2020/

This Hazardous Weather Outlook is for portions of northwestern
South Dakota...south central South Dakota...southwestern South
Dakota...and the Black Hills of South Dakota.

.DAY ONE...Today and Tonight

Thunderstorms will develop this afternoon. Scattered strong to
severe storms are possible with large hail and damaging wind
gusts.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Thunderstorms are possible through early next week.

There is an enhanced risk of severe thunderstorms Saturday
afternoon and evening. Very large hail and damaging winds will be
the main threat, but isolated tornadoes may occur. Locally heavy
rainfall and flash flooding are also possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today.

&&

Stay tuned to NOAA weather radio for further updates...or check
our web site at weather.gov/rapidcity

In the hours before

Local storm report, Jun 4, 6:34 PM MST, 44 minutes before

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Local storm report, Jun 4, 6:36 PM MST, 42 minutes before

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Local storm report, Jun 4, 6:45 PM MST, 33 minutes before

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Local storm report, Jun 4, 6:53 PM MST, 25 minutes before

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Local storm report, Jun 4, 7:01 PM MST, 17 minutes before

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Local storm report, Jun 4, 7:18 PM MST, 0 minutes before

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The radar

The Rapid City radar (KUDX), 46 km away, was scanning. The volume nearest the first event began at 02:16 UTC.

Open the radar archive at this moment

Event by event

5 hail. Local standard time, as filed.

Hail, Pennington

When: June 4, 7:18 PM MST
Where: Pennington County, Hisega
Measured: 1 in hail
Reported by: Public
Coordinates: 44.050, -103.400

Hail, Pennington

When: June 4, 7:30 PM MST
Where: Pennington County, 7.52 mi SSE of Rapid City
Measured: 1 in hail
Reported by: NWS Employee
Coordinates: 43.980, -103.170

Hail, Pennington

When: June 4, 7:45 PM MST
Where: Pennington County, 2 mi SE of Farmingdale
Measured: 1 in hail
Reported by: Trained Spotter
Coordinates: 43.950, -102.852

Wind gusts to 50 mph accompanied the storm.

Hail, Oglala Lakota

When: June 4, 8:35 PM MST
Where: Oglala Lakota County, 6 mi NNW of Kyle
Measured: 0.88 in hail
Reported by: Trained Spotter
Coordinates: 43.500, -102.226

Hail, Jackson

When: June 4, 8:45 PM MST
Where: Jackson County, 5 mi S of Potato Creek
Measured: 1 in hail
Reported by: Trained Spotter
Coordinates: 43.458, -102.000

Wind gusts reached 40 mph.

What these are

Hail: Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.

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

The same day elsewhere

Every storm in South Dakota in 2020 Every state in 2020 This day in weather history Warnings in South Dakota, June 2020

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: 891660, 891664, 891665, 891661, 891666.