Alert archive / South Dakota / Winter Storm Warnings in 2026

Winter Storm Warning 1, NWS Aberdeen, SD

March 13, 202621 counties in South Dakota; Big Stone County, Traverse County, Minnesota

NWS Aberdeen, SD issued this winter storm warning at Mar 13, 2026, 2:23 PM CDT for 21 counties in South Dakota; Big Stone County, Traverse County, Minnesota. It took effect at Mar 14, 2026, 1:00 PM CDT. It was in force for 22 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: Mar 13, 2026, 2:23 PM CDT (19:23 UTC)
In effect from: Mar 14, 2026, 1:00 PM CDT
Expired: Mar 15, 2026, 10:44 AM CDT
In force: 22 hr
Issued by: NWS Aberdeen, SD

All 23 counties

Big Stone County, MN, Traverse County, MN, Brown County, SD, Campbell County, SD, Clark County, SD, Codington County, SD, Corson County, SD, Day County, SD, Deuel County, SD, Dewey County, SD, Edmunds County, SD, Faulk County, SD, Grant County, SD, Hamlin County, SD, Hand County, SD, Hyde County, SD, Marshall County, SD, McPherson County, SD, Potter County, SD, Roberts County, SD, Spink County, SD, Sully County, SD, Walworth County, SD

The radar

The Aberdeen radar (KABR), 27 km from the middle of the area, began a volume at 19:27 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 12:00Z, 7.4 hours before the alert went out and 242 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1161 m above ground
0-6 km bulk shear: 106 kt
0-1 km storm-relative helicity: -151 m²/s²
0-3 km storm-relative helicity: 29 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this winter storm 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 winter storm warning went out at Mar 12, 6:52 PM CDT, 19 hours 31 minutes earlier.

Area forecast discussion, Mar 12, 6:52 PM CDT, 19 hours 31 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
Mar 13, 2:23 PM CDT	Blizzard Warning	ABR	Brown, Buffalo, Clark, Codington, Day, Deuel and 17 more	50 hr
Mar 13, 2:23 PM CDT	Winter Weather Advisory	ABR	Buffalo, Hughes, Jones, Lyman, Stanley	38 hr

Nearby

Winter Storm Warnings in South Dakota, 2026 Winter Storm Warnings in Minnesota, 2026 Every winter storm 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.