Flood in South Dakota, June 21 to 22, 2011

Name: Flood in South Dakota, June 21 to 22, 2011
Start: 2011-06-21T07:00
End: 2011-06-22T18:00
Location: South Dakota

June 21 to 22, 2011 · NWS ABR · 1 event in 1 county or zone

5 feet on June 21st. Evacuations occurred along the Bad River in Fort Pierre.

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 Bad River to rise rapidly and over the flood stage of 21 feet to 27.5 feet on June 21st. Evacuations occurred along the Bad River in Fort Pierre. Lowland flooding of agricultural land and pastureland occurred. The Bad River fell quickly back to below flood stage on June 22nd.

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 Jun 21, 3:04 AM MST, 3 hours 56 minutes earlier.

Area forecast discussion, Jun 21, 3:04 AM MST, 3 hours 56 minutes before

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Hazardous weather outlook, Jun 21, 3:52 AM MST, 3 hours 8 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ABERDEEN SD
552 AM CDT TUE JUN 21 2011

SDZ003>005-009-010-015>017-033>037-045-048-051-221100-
CORSON-CAMPBELL-MCPHERSON-WALWORTH-EDMUNDS-DEWEY-POTTER-FAULK-
STANLEY-SULLY-HUGHES-HYDE-HAND-JONES-LYMAN-BUFFALO-
552 AM CDT TUE JUN 21 2011 /452 AM MDT TUE JUN 21 2011/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL SOUTH
DAKOTA AND NORTH CENTRAL SOUTH DAKOTA.

.DAY ONE...TODAY AND TONIGHT

SHOWERS AND THUNDERSTORMS ARE EXPECTED TODAY INTO THIS EVENING.
THE MAIN THREAT WILL BE LOCALLY HEAVY RAINFALL AS SOME
THUNDERSTORMS MAY PRODUCE RAINFALL AMOUNTS IN EXCESS OF AN INCH
PER HOUR. A FLASH FLOOD WATCH REMAINS IN EFFECT TODAY.

A FLOOD WARNING REMAINS IN EFFECT FOR ALL OF THE MISSOURI RIVER
WITHIN THIS FORECAST AREA...FROM THE NORTH DAKOTA AND SOUTH DAKOTA
BORDER ALL THE WAY DOWN TO CHAMBERLAIN. THE MISSOURI RIVER AT
PIERRE IS OVER SIX FEET ABOVE FLOOD STAGE...AND IS EXPECTED TO
REMAIN ABOVE FLOOD STAGE FOR THE NEXT SEVERAL WEEKS DUE TO HIGH
RELEASES OF WATER OUT OF GARRISON DAM IN NORTH DAKOTA AND OAHE DAM
NORTH OF PIERRE. SIGNIFICANTLY ELEVATED RIVER LEVELS UP AND DOWN
THE MISSOURI RIVER ARE EXPECTED.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THUNDERSTORMS ARE IN THE FORECAST FRIDAY THROUGH THE WEEKEND.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS REQUESTED TODAY FOR REPORTS OF FLOODING OR
EXCESSIVE RAINFALL AMOUNTS.

MNZ039-046-SDZ006>008-011-018>023-221100-
TRAVERSE-BIG STONE-BROWN-MARSHALL-ROBERTS-DAY-SPINK-CLARK-
CODINGTON-GRANT-HAMLIN-DEUEL-
552 AM CDT TUE JUN 21 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL
MINNESOTA AND NORTHEAST SOUTH DAKOTA.

.DAY ONE...TODAY AND TONIGHT

SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE TODAY AND TONIGHT.
WHILE SEVERE STORMS ARE NOT EXPECTED...LOCALLY HEAVY RAINFALL IS
EXPECTED. A FLASH FLOOD WATCH REMAINS IN EFFECT INTO TONIGHT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THUNDERSTORMS ARE IN THE FORECAST FRIDAY THROUGH THE WEEKEND.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS REQUESTED TODAY FOR REPORTS OF FLOODING OR
EXCESSIVE RAINFALL AMOUNTS.

DORN

In the hours before

Local storm report, Jun 21, 6:16 AM MST, 44 minutes before

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Local storm report, Jun 21, 6:47 AM MST, 13 minutes before

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Local storm report, Jun 21, 6:55 AM MST, 5 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, Stanley

When: June 21, 7:00 AM MST to June 22, 6:00 PM MST
Where: Stanley County, 7.76 mi SW of Wendte to 0.85 mi SSW of Wendte
Cause: Heavy Rain
Reported by: River/Stream Gage
Coordinates: 44.170, -100.780

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 2011 Every state in 2011 This day in weather history Warnings in South Dakota, June 2011

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: 323129.