Flood in South Dakota, July 6, 2020

Name: Flood in South Dakota, July 6, 2020
Start: 2020-07-06T02:05
End: 2020-07-06T10:05
Location: South Dakota

July 6, 2020 · NWS ABR · 1 event in 1 county or zone

Heavy rains caused the flooding of several secondary roads in southeast Mcpherson county near the Long Lake Colony. One car stalled after driving into a flooded road.

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 rains caused the flooding of several secondary roads in southeast Mcpherson county near the Long Lake Colony. One car stalled after driving into a flooded road.

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 5, 11:28 PM CST, 2 hours 37 minutes earlier.

Area forecast discussion, Jul 5, 11:28 PM CST, 2 hours 37 minutes before

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Hazardous weather outlook, Jul 5, 4:03 AM CST, 22 hours 2 minutes before

Hazardous Weather Outlook
National Weather Service Aberdeen SD
503 AM CDT Sun Jul 5 2020

MNZ039-046-SDZ003>011-015>023-033>037-045-048-051-061015-
Traverse-Big Stone-Corson-Campbell-McPherson-Brown-Marshall-Roberts-
Walworth-Edmunds-Day-Dewey-Potter-Faulk-Spink-Clark-Codington-Grant-
Hamlin-Deuel-Stanley-Sully-Hughes-Hyde-Hand-Jones-Lyman-Buffalo-
503 AM CDT Sun Jul 5 2020 /403 AM MDT Sun Jul 5 2020/

This Hazardous Weather Outlook is for west central Minnesota,
central South Dakota, north central South Dakota and northeast
South Dakota.

.DAY ONE...Today and tonight.

Expect a cold front to be the main focus for thunderstorm
development initially this afternoon, although an expanded area of
thunderstorms is possible later in the evening. Some storms may be
severe with strong winds in excess of 70 mph and hail the size of
golf balls or larger possible. Heavy rain is also a threat.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The front will stall on Monday, with additional thunderstorm
development possible in the afternoon and evening, mainly for parts
of southeast South Dakota and west central Minnesota.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will likely be needed. Weather spotters are
encouraged to submit reports to the National Weather Service in
Aberdeen. The public can submit reports on our web page, Facebook
page, or our Twitter feed.

In the hours before

Local storm report, Jul 5, 8:27 PM CST, 5 hours 38 minutes before

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Local storm report, Jul 5, 8:34 PM CST, 5 hours 31 minutes before

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Special weather statement, Jul 5, 8:50 PM CST, 5 hours 15 minutes before

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Special weather statement, Jul 5, 8:56 PM CST, 5 hours 9 minutes before

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Special weather statement, Jul 5, 9:36 PM CST, 4 hours 29 minutes before

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Special weather statement, Jul 5, 11:14 PM CST, 2 hours 51 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, McPherson

When: July 6, 2:05 AM CST to 10:05 AM CST
Where: McPherson County, 2.78 mi WNW of Long Lake Colony to 0.39 mi WSW of Long Lake Colony
Cause: Heavy Rain
Reported by: Law Enforcement
Coordinates: 45.620, -98.850

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 2020 Every state in 2020 This day in weather history Warnings in South Dakota, July 2020

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: 908357.