Alert archive / South Dakota / Areal Flood Warnings in 2025

Areal Flood Warning 21, NWS Aberdeen, SD

August 3, 2025Lyman County, South Dakota

NWS Aberdeen, SD issued this areal flood warning at Aug 3, 2025, 11:49 PM CDT for Lyman County, South Dakota. It was in force for 10 hr. 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 3, 2025, 11:49 PM CDT (04:49 UTC)
Expired
Aug 4, 2025, 10:00 AM CDT
In force
10 hr
Issued by
NWS Aberdeen, SD
Area
Storm-based polygon
Flood severity
None

County Lyman County, SD

The radar

The Aberdeen radar (KABR), 207 km from the middle of the area, began a volume at 04:51 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 areal flood 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 areal flood warning went out at Aug 3, 9:54 PM CDT, 1 hour 55 minutes earlier.

Area forecast discussion, Aug 3, 9:54 PM CDT, 1 hour 55 minutes before
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Hazardous weather outlook, Aug 3, 1:47 PM CDT, 10 hours 2 minutes before
Hazardous Weather Outlook
National Weather Service Aberdeen SD
147 PM CDT Sun Aug 3 2025

MNZ039-046-SDZ006>008-011-018>023-041900-
Traverse-Big Stone-Brown-Marshall-Roberts-Day-Spink-Clark-Codington-
Grant-Hamlin-Deuel-
147 PM CDT Sun Aug 3 2025

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

.DAY ONE...This afternoon and tonight.

No hazardous weather is expected at this time.

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

On Tuesday, there is a marginal risk (1 out of 5) for severe storms.
Strong winds will be the main threat.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

SDZ015-016-033>037-045-048-051-041900-
Dewey-Potter-Stanley-Sully-Hughes-Hyde-Hand-Jones-Lyman-Buffalo-
147 PM CDT Sun Aug 3 2025 /1247 PM MDT Sun Aug 3 2025/

This Hazardous Weather Outlook is for central South Dakota and
north central South Dakota.

.DAY ONE...This afternoon and tonight.

There is a marginal risk (1 out of 5) for severe storms this evening,
mainly south and east of Pierre. Strong winds will be the main threat.

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

On Monday and Tuesday, there is a marginal risk (1 out of 5) for
severe storms. Strong winds will be the main threat.

.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.

SDZ003>005-009-010-017-041900-
Corson-Campbell-McPherson-Walworth-Edmunds-Faulk-
147 PM CDT Sun Aug 3 2025 /1247 PM MDT Sun Aug 3 2025/

This Hazardous Weather Outlook is for north central South Dakota.

.DAY ONE...This afternoon and tonight.

No hazardous weather is expected at this time.

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

On Tuesday, there is a marginal risk (1 out of 5) for severe storms.
Strong winds will be the main threat.Strong winds will be the main
threat.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

10

In the hours before

Special weather statement, Aug 3, 6:21 PM CDT, 5 hours 28 minutes before
Special Weather Statement
National Weather Service Aberdeen SD
621 PM CDT Sun Aug 3 2025

SDZ010-017-032345-
Edmunds SD-Faulk SD-
621 PM CDT Sun Aug 3 2025

...A STRONG THUNDERSTORM WILL IMPACT SOUTH CENTRAL EDMUNDS AND
NORTHWESTERN FAULK COUNTIES THROUGH 645 PM CDT...

At 621 PM CDT, Doppler radar was tracking a strong thunderstorm over
Thunderbird Colony, or 15 miles northwest of Faulkton, moving south
at 15 mph.

HAZARD...Wind gusts up to 40 mph and nickel size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

Locations impacted include...
Brentwood Colony, Thunderbird Colony, Norbeck, Blumengard Colony, and
Loyalton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 4531 9943 4532 9918 4514 9909 4512 9942
TIME...MOT...LOC 2321Z 339DEG 11KT 4522 9929

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...40 MPH

07
Special weather statement, Aug 3, 7:54 PM CDT, 3 hours 55 minutes before
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Local storm report, Aug 3, 8:28 PM CDT, 3 hours 21 minutes before
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Local storm report, Aug 3, 8:33 PM CDT, 3 hours 16 minutes before
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Local storm report, Aug 3, 8:58 PM CDT, 2 hours 51 minutes before
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Local storm report, Aug 3, 9:16 PM CDT, 2 hours 33 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 3, 7:33 PM CDTSevere Thunderstorm WarningABRLyman27 min
Aug 3, 7:54 PM CDTSpecial Weather StatementABRLyman36 min
Aug 3, 8:02 PM CDTSevere Thunderstorm WarningABRLyman26 min
Aug 3, 8:39 PM CDTSevere Thunderstorm WarningABRHughes, Lyman36 min
Aug 3, 8:56 PM CDTFlash Flood WarningABRLyman3 hr
Aug 4, 6:57 PM CDTAreal Flood WarningABRRoberts3 hr

Nearby

Areal Flood Warnings in South Dakota, 2025Every areal flood 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.