Hail and Damaging Wind in South Dakota, August 11, 2024

Name: Hail and Damaging Wind in South Dakota, August 11, 2024
Start: 2024-08-11T13:11
End: 2024-08-11T14:33
Location: South Dakota

August 11, 2024 · NWS UNR · 3 events in 2 counties and zones

A severe thunderstorm developed along the southeastern Black Hills and tracked into Oglala Lakota County, producing large hail and wind gusts to over 60 mph.

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: 3

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 severe thunderstorm developed along the southeastern Black Hills and tracked into Oglala Lakota County, producing large hail and wind gusts to over 60 mph.

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, 11:57 AM MST, 1 hour 14 minutes earlier.

Area forecast discussion, Aug 11, 11:57 AM MST, 1 hour 14 minutes before

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Hazardous weather outlook, Aug 11, 2:15 AM MST, 10 hours 56 minutes before

Hazardous Weather Outlook
National Weather Service Rapid City SD
315 AM MDT Sun Aug 11 2024

SDZ012>014-024>032-041>044-046-047-049-072>077-WYZ054>060-121300-
Butte-Northern Meade Co Plains-Ziebach-Northern Black Hills-
Northern Foothills-Rapid City-Southern Foothills-
Central Black Hills-Southern Black Hills-Custer Co Plains-
Pennington Co Plains-Haakon-Western Fall River-
Northern Oglala Lakota-Northern Jackson-Bennett-Mellette-Todd-
Tripp-Sturgis/Piedmont Foothills-Southern Meade Co Plains-
Hermosa Foothills-Eastern Fall River-Southern Oglala Lakota-
Southern Jackson-Northern Campbell-Southern Campbell-
Western Crook-Wyoming Black Hills-Weston County Plains-Newcastle-
Northeastern Crook-
315 AM MDT Sun Aug 11 2024 /415 AM CDT Sun Aug 11 2024/

This Hazardous Weather Outlook is for portions of western South
Dakota and northeastern Wyoming.

.DAY ONE...Today and Tonight

There is a marginal risk (level 1 of 5) of severe thunderstorms
this afternoon, meaning that isolated severe storms are possible.
While the primary hazards include large hail and damaging wind
gusts, there is also a small chance for a tornado over
southwestern South Dakota this afternoon.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

There are chances for thunderstorms nearly every day this week.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed today.

&&

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

SDZ001-002-078-121300-
Harding-Northern Perkins-Southern Perkins-
315 AM MDT Sun Aug 11 2024

This Hazardous Weather Outlook is for portions of northwestern
South Dakota.

.DAY ONE...Today and Tonight

There is a chance of showers and thunderstorms today, severe
storms are not expected at this time.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

There are chances for thunderstorms nearly every day this week.

.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

Special weather statement, Aug 11, 11:54 AM MST, 1 hour 17 minutes before

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Special weather statement, Aug 11, 12:28 PM MST, 43 minutes before

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Local storm report, Aug 11, 12:54 PM MST, 17 minutes before

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Special weather statement, Aug 11, 12:55 PM MST, 16 minutes before

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Local storm report, Aug 11, 12:58 PM MST, 13 minutes before

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Local storm report, Aug 11, 1:09 PM MST, 2 minutes before

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The radar

The Rapid City radar (KUDX), 43 km away, was scanning. The volume nearest the first event began at 20:11 UTC.

Open the radar archive at this moment

Event by event

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

Hail, Custer

When: August 11, 1:11 PM MST
Where: Custer County, Hermosa
Measured: 1 in hail
Reported by: Trained Spotter
Coordinates: 43.840, -103.190

Thunderstorm Wind, Custer

When: August 11, 1:40 PM MST to 1:43 PM MST
Where: Custer County, 6.06 mi SSW of Folsom
Measured: 58 kt (67 mph) measured gust
Reported by: Mesonet
Coordinates: 43.740, -102.920

Hail, Oglala Lakota

When: August 11, 2:33 PM MST
Where: Oglala Lakota County, 1 mi SSE of Sharps Corner
Measured: 1 in hail
Reported by: Storm Chaser
Coordinates: 43.367, -102.392

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 2024 Every state in 2024 This day in weather history Warnings in South Dakota, August 2024

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: 1201793, 1201794, 1201795.