Flash Flood and Hail in South Dakota, July 26, 2016

Name: Flash Flood and Hail in South Dakota, July 26, 2016
Start: 2016-07-26T17:20
End: 2016-07-26T18:13
Location: South Dakota

July 26, 2016 · NWS UNR · 3 events in 1 county or zone

Hail to golf ball size fell with severe thunderstorms southeast of Mission. The slow moving storms also produced heavy rain across a good portion of Todd County, with rainfall estimates between one and a half and three inches.

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.

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 26, 2:47 PM CST, 2 hours 33 minutes earlier.

Area forecast discussion, Jul 26, 2:47 PM CST, 2 hours 33 minutes before

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Hazardous weather outlook, Jul 26, 4:26 AM CST, 12 hours 54 minutes before

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In the hours before

Special weather statement, Jul 26, 2:42 PM CST, 2 hours 38 minutes before

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Special weather statement, Jul 26, 3:49 PM CST, 1 hour 31 minutes before

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Local storm report, Jul 26, 4:30 PM CST, 50 minutes before

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Special weather statement, Jul 26, 4:34 PM CST, 46 minutes before

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Special weather statement, Jul 26, 4:37 PM CST, 43 minutes before

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Local storm report, Jul 26, 5:14 PM CST, 6 minutes before

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The radar

The North Platte radar (KLNX), 158 km away, was scanning. The volume nearest the first event began at 23:17 UTC.

Open the radar archive at this moment

Event by event

2 hail, 1 flash flood. Local standard time, as filed.

Hail, Todd

When: July 26, 5:20 PM CST
Where: Todd County, 7.5 mi W of Okreek
Measured: 1 in hail
Reported by: Public
Coordinates: 43.380, -100.529

Flash Flood, Todd

When: July 26, 5:30 PM CST to 6:00 PM CST
Where: Todd County, 6.07 mi NNW of Mission to 4.73 mi WSW of Mission
Cause: Heavy Rain
Reported by: Emergency Manager
Coordinates: 43.390, -100.710

Street flooding was reported in Mission and gravel was washed off roads northeast of Mission.

Hail, Todd

When: July 26, 6:13 PM CST
Where: Todd County, 5.69 mi SE of Mission
Measured: 1.75 in hail
Reported by: Trained Spotter
Coordinates: 43.260, -100.570

What these are

Hail: Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
Flash Flood: Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.

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

The same day elsewhere

Every storm in South Dakota in 2016 Every state in 2016 This day in weather history Warnings in South Dakota, July 2016

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: 650760, 645209, 645167.