Alert archive / South Dakota / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 211, NWS Aberdeen, SD

August 13, 2025Brown County, Day County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Aug 13, 2025, 5:42 PM CDT for Brown County, Day County, South Dakota. It was in force for 48 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 13, 2025, 5:42 PM CDT (22:42 UTC)
Expired
Aug 13, 2025, 6:30 PM CDT
In force
48 min
Issued by
NWS Aberdeen, SD
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Brown County, SD, Day County, SD

The radar

The Aberdeen radar (KABR), 34 km from the middle of the area, began a volume at 22:40 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, 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 this severe thunderstorm warning went out at Aug 13, 3:20 PM CDT, 2 hours 22 minutes earlier.

Area forecast discussion, Aug 13, 3:20 PM CDT, 2 hours 22 minutes before
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Hazardous weather outlook, Aug 13, 5:05 AM CDT, 12 hours 37 minutes before
Hazardous Weather Outlook
National Weather Service Aberdeen SD
505 AM CDT Wed Aug 13 2025

MNZ039-046-SDZ003>011-015>023-033>037-045-048-051-141015-
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-
505 AM CDT Wed Aug 13 2025 /405 AM MDT Wed Aug 13 2025/

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.

There is a slight risk (level 2 of 5) for central/south central
South Dakota, and a marginal risk (1 out of 5) south of a line from
Mobridge to Redfield and Watertown. Main threats in these outlook
areas are large hail and winds of 60-70mph. Timing of severe weather
is mainly evening and early overnight.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

There is a slight (2 of 5) risk area for the northern tier of
northeast South Dakota, and a marginal risk (1 of 5) in central
South Dakota for storms on Thursday. Again, timing is evening to
overnight and main threats are hail and winds. Coverage is expected
to be more isolated.

Additionally it'll be hot and humid Thursday with highs/heat index
values near 100 in central South Dakota.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be requested. 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 X
feed.

07

The office that day

Everything else NWS Aberdeen, SD issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 13, 9:11 AM CDTSpecial Weather StatementABRWalworth34 min
Aug 13, 9:42 AM CDTSpecial Weather StatementABRWalworth33 min
Aug 13, 6:30 PM CDTSevere Thunderstorm WarningABRDay16 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 2025Every severe thunderstorm warning in 2025

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.