Hail in South Dakota, August 17, 2019

Name: Hail in South Dakota, August 17, 2019
Start: 2019-08-17T10:05
End: 2019-08-17T10:25
Location: South Dakota

August 17, 2019 · NWS UNR · 4 events in 1 county or zone

A thunderstorm briefly became severe over the northern Black Hills, producing large hail that caused damage in the Deadwood area.

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 UNR wrote it up.

A thunderstorm briefly became severe over the northern Black Hills, producing large hail that caused damage in the Deadwood area.

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 17, 3:18 AM MST, 6 hours 47 minutes earlier.

Area forecast discussion, Aug 17, 3:18 AM MST, 6 hours 47 minutes before

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Hazardous weather outlook, Aug 17, 10:02 AM MST, 3 minutes before

Hazardous Weather Outlook
National Weather Service Rapid City SD
1102 AM MDT Sat Aug 17 2019

SDZ014-024-026>032-041>044-046-047-049-072>074-181315-
Ziebach-Northern Black Hills-Rapid City-Southern Foot Hills-
Central Black Hills-Southern Black Hills-Custer Co Plains-
Pennington Co Plains-Haakon-Fall River-Oglala Lakota-Jackson-
Bennett-Mellette-Todd-Tripp-Sturgis/Piedmont Foot Hills-
Southern Meade Co Plains-Hermosa Foot Hills-
1102 AM MDT Sat Aug 17 2019 /1202 PM CDT Sat Aug 17 2019/

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...This Afternoon

Scattered thunderstorms are expected to develop along and ahead of
a cold front crossing the area. Severe thunderstorms are
possible, with large hail and damaging wind gusts. An isolated
tornado is also possible...mainly east of a Haakon to Oglala-
Lakota County line.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Isolated thunderstorms are possible each day from Tuesday through
Friday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is possible after 1pm MDT this afternoon.

&&

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

SDZ001-002-012-013-025-WYZ054>058-071-181315-
Harding-Perkins-Butte-Northern Meade Co Plains-
Northern Foot Hills-Northern Campbell-Southern Campbell-
Western Crook-Wyoming Black Hills-Weston-Northeastern Crook-
1102 AM MDT Sat Aug 17 2019

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

.DAY ONE...Today and Tonight

Scattered showers and thunderstorms are expected this afternoon
and evening behind a cold front crossing the area. A few strong to
severe are possible, with large hail and damaging wind gusts.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Isolated thunderstorms are possible each day from Tuesday through
Friday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be possible this afternoon.

&&

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

In the hours before

Special weather statement, Aug 17, 6:29 AM MST, 3 hours 36 minutes before

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The radar

The Rapid City radar (KUDX), 77 km away, was scanning. The volume nearest the first event began at 17:06 UTC.

Open the radar archive at this moment

Event by event

4 hail. Local standard time, as filed.

Hail, Lawrence

When: August 17, 10:05 AM MST to 10:15 AM MST
Where: Lawrence County, 1 mi NNE of Deadwood
Measured: 1.5 in hail
Reported by: Public
Coordinates: 44.393, -103.722

Hail, Lawrence

When: August 17, 10:06 AM MST to 10:10 AM MST
Where: Lawrence County, Deadwood
Measured: 1.75 in hail
Reported by: Public
Coordinates: 44.380, -103.730

Hail, Lawrence

When: August 17, 10:09 AM MST
Where: Lawrence County, Deadwood
Measured: 1.5 in hail
Reported by: NWS Employee
Coordinates: 44.380, -103.730

Hail, Lawrence

When: August 17, 10:25 AM MST
Where: Lawrence County, 1 mi NE of Deadwood
Measured: 1.75 in hail
Reported by: Public
Coordinates: 44.390, -103.716

Large hail damaged vehicles and windows.

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 2019 Every state in 2019 This day in weather history Warnings in South Dakota, August 2019

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 2026-09-24. Each event’s entry at NCEI: 846497, 846498, 846499, 846500.