South Dakota, 2023

Flood in South Dakota, August 11 to 21, 2023

August 11 to 21, 2023 · NWS ABR · 1 event in 1 county or zone

After heavy rainfall during the first half of August, the James river gauge at Ashton rose above flood stage on the morning of August 11th and remained in flood through August 21st. 25 feet above flood stage.

Where it happened

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  • Tornadoes
  • Tropical storms and surge
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  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

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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.

After heavy rainfall during the first half of August, the James river gauge at Ashton rose above flood stage on the morning of August 11th and remained in flood through August 21st. The river crested at 13.25 on August 18th, 0.25 feet above flood stage. This only impacted already previously flooded crop and pastures.

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 Aug 11, 8:07 AM CST, 1 hour 38 minutes earlier.

Area forecast discussion, Aug 11, 8:07 AM CST, 1 hour 38 minutes before
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Hazardous weather outlook, Aug 11, 2:19 AM CST, 7 hours 26 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, Spink

When
August 11, 9:45 AM CST to August 21, 6:45 PM CST
Where
Spink County, 0.97 mi W of Brentford to 3.69 mi E of Mellette
Cause
Heavy Rain
Reported by
River/Stream Gage
Coordinates
45.150, -98.350

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

More

Every storm in South Dakota in 2023Every state in 2023This day in weather historyWarnings in South Dakota, August 2023

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: 1116963.