Damaging Winds in South Dakota, July 22, 2018

Name: Damaging Winds in South Dakota, July 22, 2018
Start: 2018-07-22T19:45
End: 2018-07-22T19:50
Location: South Dakota

July 22, 2018 · NWS UNR · 2 events in 1 county or zone

A severe thunderstorm moved through eastern Mellette County, producing strong wind gusts north of Wood.

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
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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.

A severe thunderstorm moved through eastern Mellette County, producing strong wind gusts north of Wood.

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 22, 5:50 PM CST, 1 hour 55 minutes earlier.

Area forecast discussion, Jul 22, 5:50 PM CST, 1 hour 55 minutes before

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Hazardous weather outlook, Jul 22, 4:05 AM CST, 15 hours 40 minutes before

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In the hours before

Special weather statement, Jul 22, 3:52 PM CST, 3 hours 53 minutes before

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Special weather statement, Jul 22, 4:31 PM CST, 3 hours 14 minutes before

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Local storm report, Jul 22, 5:13 PM CST, 2 hours 32 minutes before

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Special weather statement, Jul 22, 6:15 PM CST, 1 hour 30 minutes before

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Local storm report, Jul 22, 6:33 PM CST, 1 hour 12 minutes before

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Local storm report, Jul 22, 7:33 PM CST, 12 minutes before

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The radar

The North Platte radar (KLNX), 183 km away, was scanning. The volume nearest the first event began at 01:46 UTC.

Open the radar archive at this moment

Event by event

2 thunderstorm wind. Local standard time, as filed.

Thunderstorm Wind, Mellette

When: July 22, 7:45 PM CST
Where: Mellette County, 8.53 mi NE of Wood
Measured: 52 kt (60 mph) estimated gust
Reported by: Public
Coordinates: 43.600, -100.380

Wind gusts were estimated at 60 mph.

Thunderstorm Wind, Mellette

When: July 22, 7:50 PM CST
Where: Mellette County, 7.4 mi NNE of Wood
Measured: 52 kt (60 mph) estimated gust
Reported by: Public
Coordinates: 43.590, -100.400

Wind gusts were estimated at 60 mph.

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.

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 2026-09-30. Each event’s entry at NCEI: 765855, 765857.