Flood in South Dakota, July 4 to 10, 2019

Name: Flood in South Dakota, July 4 to 10, 2019
Start: 2019-07-04T17:45
End: 2019-07-10T14:15
Location: South Dakota

July 4 to 10, 2019 · NWS ABR · 1 event in 1 county or zone

Heavy rainfall runoff caused the Big Sioux River near Florence to go above and below flood stage several times from July 4th through July 10th. 44 feet on July 5th.

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: 1

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 ABR wrote it up.

Heavy rainfall runoff caused the Big Sioux River near Florence to go above and below flood stage several times from July 4th through July 10th. Flood stage is 8 feet and the highest the river rose to was 8.44 feet on July 5th.

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 Aberdeen, SD wrote its last area forecast discussion before the first event at Jul 4, 5:15 PM CST, 30 minutes earlier.

Area forecast discussion, Jul 4, 5:15 PM CST, 30 minutes before

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Hazardous weather outlook, Jul 4, 3:14 AM CST, 14 hours 31 minutes before

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In the hours before

Local storm report, Jul 4, 12:12 PM CST, 5 hours 33 minutes before

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Local storm report, Jul 4, 12:13 PM CST, 5 hours 32 minutes before

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The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

1 flood. Local standard time, as filed.

Flood, Grant

When: July 4, 5:45 PM CST to July 10, 2:15 PM CST
Where: Grant County, 7.7 mi NNE of Hiland to 4.93 mi NE of Hiland
Cause: Heavy Rain
Reported by: River/Stream Gage
Coordinates: 45.280, -97.130

What these are

Flood: Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.

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, July 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 2026-10-01. Each event’s entry at NCEI: 845365.