Alert archive / South Dakota / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 182, NWS Aberdeen, SD

July 25, 2026Brown County, Edmunds County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 25, 2026, 8:58 PM CDT for Brown County, Edmunds County, South Dakota. It was in force for 47 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
Jul 25, 2026, 8:58 PM CDT (01:58 UTC)
Expired
Jul 25, 2026, 9:45 PM CDT
In force
47 min
Issued by
NWS Aberdeen, SD
Area
Storm-based polygon
Damage threat
Considerable
Hail
1.0 in
Wind
70.0 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 02:00 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

Aberdeen, SD (KABR), launched 00:00Z, 2.0 hours before the alert went out and 74 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-pSkew-T log-p diagram, Aberdeen, SD at 00:00Z on 2026-07-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4963 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Aberdeen, SD at 00:00Z on 2026-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 100 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
4963 J/kg
Mixed-layer CIN
-115 J/kg
Mixed-layer LCL
1465 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
100 m²/s²
0-3 km storm-relative helicity
155 m²/s²
Significant tornado parameter
1.8
Supercell composite
17.3

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 25, 7:03 PM CDTSpecial Weather StatementABRDewey27 min
Jul 25, 7:25 PM CDTSevere Thunderstorm WarningABRCampbell, Dewey, Edmunds, McPherson, Walworth50 min
Jul 25, 8:02 PM CDTSevere Thunderstorm Warning Considerable damage threatABREdmunds, McPherson, Walworth43 min
Jul 25, 8:36 PM CDTSevere Thunderstorm Warning Considerable damage threatABRBrown, Edmunds, McPherson39 min
Jul 25, 9:28 PM CDTSevere Thunderstorm Warning Considerable damage threatABRBrown, Day, Marshall, Spink47 min
Jul 25, 9:53 PM CDTSevere Thunderstorm Warning Considerable damage threatABRBrown, Marshall41 min
Jul 25, 10:15 PM CDTSevere Thunderstorm Warning Considerable damage threatABRDay, Grant, Marshall, Roberts34 min
Jul 25, 11:19 PM CDTExtreme Heat WarningABRBrown, Buffalo, Campbell, Clark, Codington, Corson and 20 more22 hr

Nearby

Severe Thunderstorm Warnings in South Dakota, 2026Every 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.