Alert archive / South Dakota / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 64, NWS Aberdeen, SD

June 27, 20254 counties in South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jun 27, 2025, 10:49 PM CDT for 4 counties in South Dakota. It was in force for 41 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: Jun 27, 2025, 10:49 PM CDT (03:49 UTC)
Expired: Jun 27, 2025, 11:30 PM CDT
In force: 41 min
Issued by: NWS Aberdeen, SD
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Hand County, SD, Hughes County, SD, Hyde County, SD, Spink County, SD

The radar

The Aberdeen radar (KABR), 113 km from the middle of the area, began a volume at 03:52 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 27, 5:45 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 00:00Z, 3.8 hours before the alert went out and 72 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 3087 J/kg
Mixed-layer CIN: -67 J/kg
Mixed-layer LCL: 1144 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 87 m²/s²
0-3 km storm-relative helicity: 184 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 8.9

Open this sounding in Storm Lab

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 Jun 27, 9:42 PM CDT, 1 hour 7 minutes earlier.

Area forecast discussion, Jun 27, 9:42 PM CDT, 1 hour 7 minutes before

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Hazardous weather outlook, Jun 27, 3:47 AM CDT, 19 hours 2 minutes before

Hazardous Weather Outlook
National Weather Service Aberdeen SD
347 AM CDT Fri Jun 27 2025

MNZ039-046-SDZ003>011-015>023-033>037-045-048-051-280900-
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-
347 AM CDT Fri Jun 27 2025 /247 AM MDT Fri Jun 27 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.

The forecast area has a slight risk (2 of 5) for severe weather this
afternoon/evening. Storm coverage is only isolated to widely
scattered. Large hail (2-3") and damaging winds (60-80mph) are the
main threats, however we also have the potential for tornadoes mainly
between the Missouri and James Rivers late this afternoon into the
evening hours.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

A slight risk (2 of 5) exists mainly east of a line that runs from
Aberdeen to Pierre for Saturday. The main threats are large hail and
damaging winds during the afternoon hours.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will likely be needed primarily across central
and north central South Dakota this afternoon and evening. 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

In the hours before

Local storm report, Jun 27, 9:03 PM CDT, 1 hour 46 minutes before

Preliminary Local Storm Report
National Weather Service Aberdeen SD
903 PM CDT Fri Jun 27 2025

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0856 PM     Rain             8 SW Presho             43.82N 100.18W
06/27/2025  M1.60 Inch       Lyman              SD   Cocorahs

&&

Local storm report, Jun 27, 9:07 PM CDT, 1 hour 42 minutes before

Preliminary Local Storm Report
National Weather Service Aberdeen SD
907 PM CDT Fri Jun 27 2025

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0710 PM     Hail             8 SSW Kennebec          43.80N 99.92W
06/27/2025  E1.00 Inch       Lyman              SD   Trained Spotter

            0.60 inches of rain and quarter size hail.
            Radar estimated time.

&&

KS

Local storm report, Jun 27, 10:11 PM CDT, 38 minutes before

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Local storm report, Jun 27, 10:19 PM CDT, 30 minutes before

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Local storm report, Jun 27, 10:28 PM CDT, 21 minutes before

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Local storm report, Jun 27, 10:42 PM CDT, 7 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 27, 7:01 PM CDT	Severe Thunderstorm Warning Destructive damage threat	ABR	Lyman	44 min
Jun 27, 7:41 PM CDT	Severe Thunderstorm Warning Considerable damage threat	ABR	Jones, Lyman	49 min
Jun 27, 7:52 PM CDT	Flash Flood Warning	ABR	Jones, Lyman	6 hr
Jun 27, 8:15 PM CDT	Severe Thunderstorm Warning	ABR	Corson, Dewey	60 min
Jun 27, 8:25 PM CDT	Severe Thunderstorm Warning Considerable damage threat	ABR	Lyman	36 min
Jun 27, 8:43 PM CDT	Severe Thunderstorm Warning	ABR	Dewey, Potter, Walworth	62 min
Jun 27, 8:45 PM CDT	Tornado Warning	ABR	Dewey	30 min
Jun 27, 9:12 PM CDT	Tornado Warning	ABR	Dewey, Potter	33 min
Jun 27, 9:19 PM CDT	Severe Thunderstorm Warning	ABR	Dewey, Hughes, Stanley, Sully	56 min
Jun 27, 9:28 PM CDT	River Flood Warning	ABR	Codington	21 hr
Jun 27, 9:30 PM CDT	Severe Thunderstorm Warning	ABR	Corson, Dewey, Walworth	45 min
Jun 27, 9:39 PM CDT	Severe Thunderstorm Warning	ABR	Dewey, Hyde, Potter, Sully	51 min
Jun 27, 10:12 PM CDT	Severe Thunderstorm Warning	ABR	Campbell, Corson, Dewey, Walworth	28 min
Jun 27, 10:15 PM CDT	Severe Thunderstorm Warning	ABR	Hand, Hughes, Hyde, Sully	45 min
Jun 28, 6:33 AM CDT	Special Weather Statement	ABR	Clark	27 min
Jun 28, 6:01 PM CDT	Severe Thunderstorm Warning	ABR	Codington, Deuel, Grant, Hamlin	44 min
Jun 28, 6:30 PM CDT	Severe Thunderstorm Warning	ABR	Grant	45 min
Jun 28, 6:33 PM CDT	Tornado Warning	ABR	Deuel, Hamlin	42 min
Jun 28, 1:49 AM CDT	Special Weather Statement	ABR	Traverse	11 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 2025 Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.