Hail and Damaging Wind in South Dakota, July 27, 2018

Name: Hail and Damaging Wind in South Dakota, July 27, 2018
Start: 2018-07-27T16:30
End: 2018-07-27T17:28
Location: South Dakota

July 27, 2018 · NWS UNR · 2 events in 1 county or zone

Hail and strong wind gusts accompanied a severe thunderstorm that tracked southeast across the central and southern Black Hills.

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: 2

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.

Hail and strong wind gusts accompanied a severe thunderstorm that tracked southeast across the central and southern Black Hills.

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 Jul 27, 4:29 PM MST, 1 minute earlier.

Area forecast discussion, Jul 27, 4:29 PM MST, 1 minute before

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Hazardous weather outlook, Jul 27, 4:27 AM MST, 12 hours 3 minutes before

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In the hours before

Local storm report, Jul 27, 3:39 PM MST, 51 minutes before

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Local storm report, Jul 27, 3:47 PM MST, 43 minutes before

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Special weather statement, Jul 27, 3:47 PM MST, 43 minutes before

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Local storm report, Jul 27, 4:06 PM MST, 24 minutes before

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Local storm report, Jul 27, 4:25 PM MST, 5 minutes before

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Local storm report, Jul 27, 4:30 PM MST, 0 minutes before

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The radar

The Rapid City radar (KUDX), 79 km away, was scanning. The volume nearest the first event began at 23:30 UTC.

Open the radar archive at this moment

Event by event

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

Thunderstorm Wind, Custer

When: July 27, 4:30 PM MST
Where: Custer County, 9.35 mi NW of Custer
Measured: 52 kt (60 mph) estimated gust
Reported by: NWS Employee
Coordinates: 43.860, -103.740

Wind gusts were estimated at 60 mph.

Hail, Custer

When: July 27, 5:28 PM MST
Where: Custer County, 1 mi ENE of Pringle
Measured: 1 in hail
Reported by: Trained Spotter
Coordinates: 43.615, -103.572

Hail to quarter size covered the ground.

What these are

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.
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 2018 Every state in 2018 This day in weather history Warnings in South Dakota, July 2018

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: 769484, 769485.