Alert archive / South Dakota / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 83, NWS Aberdeen, SD

June 28, 2026Brown County, Edmunds County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jun 28, 2026, 12:34 AM CDT for Brown County, Edmunds County, 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 28, 2026, 12:34 AM CDT (05:34 UTC)
Expired: Jun 28, 2026, 1:15 AM CDT
In force: 41 min
Issued by: NWS Aberdeen, SD
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

Counties Brown County, SD, Edmunds County, SD

The radar

The Aberdeen radar (KABR), 29 km from the middle of the area, began a volume at 05:38 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 nearest sounding before it

Bismarck Municip, ND (KBIS), launched 00:00Z, 5.6 hours before the alert went out and 204 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: 1476 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 953 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 144 m²/s²
0-3 km storm-relative helicity: 127 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 4.9

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 28, 12:34 AM CDT, 0 minutes earlier.

Area forecast discussion, Jun 28, 12:34 AM CDT, 0 minutes before

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Hazardous weather outlook, Jun 27, 7:53 PM CDT, 4 hours 41 minutes before

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In the hours before

Local storm report, Jun 27, 11:12 PM CDT, 1 hour 22 minutes before

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Local storm report, Jun 27, 11:18 PM CDT, 1 hour 16 minutes before

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Special weather statement, Jun 27, 11:19 PM CDT, 1 hour 15 minutes before

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Special weather statement, Jun 27, 11:29 PM CDT, 1 hour 5 minutes before

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Special weather statement, Jun 28, 12:23 AM CDT, 11 minutes before

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Local storm report, Jun 28, 12:28 AM CDT, 6 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, 8:48 PM CDT	Severe Thunderstorm Warning	ABR	Dewey, Stanley	42 min
Jun 27, 9:04 PM CDT	Severe Thunderstorm Warning	ABR	Jones	56 min
Jun 27, 9:26 PM CDT	Special Weather Statement	ABR	Stanley	34 min
Jun 27, 9:55 PM CDT	Special Weather Statement	ABR	Dewey, Sully	35 min
Jun 27, 10:00 PM CDT	Special Weather Statement	ABR	Hughes	45 min
Jun 27, 10:11 PM CDT	Severe Thunderstorm Warning	ABR	Corson	23 min
Jun 27, 10:14 PM CDT	Special Weather Statement	ABR	Jones	31 min
Jun 27, 10:30 PM CDT	Special Weather Statement	ABR	Hughes, Potter, Walworth	45 min
Jun 27, 11:08 PM CDT	Areal Flood Warning	ABR	Hughes, Stanley	107 min
Jun 27, 11:19 PM CDT	Special Weather Statement	ABR	Edmunds, Faulk, McPherson	41 min
Jun 27, 11:29 PM CDT	Special Weather Statement	ABR	Hand, Hyde	46 min
Jun 27, 11:42 PM CDT	Severe Thunderstorm Warning	ABR	Edmunds, McPherson	48 min
Jun 28, 12:09 AM CDT	Severe Thunderstorm Warning	ABR	Brown, Edmunds, Faulk, Hand, Spink	36 min
Jun 28, 12:23 AM CDT	Special Weather Statement	ABR	Brown	52 min
Jun 28, 12:45 AM CDT	Severe Thunderstorm Warning	ABR	Brown, Clark, Day, Spink	45 min
Jun 28, 1:16 AM CDT	Special Weather Statement	ABR	Marshall	29 min
Jun 28, 1:25 AM CDT	Special Weather Statement	ABR	Clark, Day	50 min
Jun 28, 11:40 AM CDT	Heat Advisory	ABR	Codington, Deuel, Grant, Hamlin, Roberts	32 hr

Nearby

Severe Thunderstorm Warnings in South Dakota, 2026 Every severe thunderstorm warning in 2026

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.