Alert archive / South Dakota / Winter Storm Warnings in 2022

Winter Storm Warning 2, NWS Aberdeen, SD

February 20, 20227 counties in South Dakota; Big Stone County, Traverse County, Minnesota

NWS Aberdeen, SD issued this winter storm warning at Feb 20, 2022, 2:41 PM CST for 7 counties in South Dakota; Big Stone County, Traverse County, Minnesota. It took effect at Feb 20, 2022, 6:00 PM CST. It was in force for 32 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: Feb 20, 2022, 2:41 PM CST (20:41 UTC)
In effect from: Feb 20, 2022, 6:00 PM CST
Expired: Feb 22, 2022, 1:36 AM CST
In force: 32 hr
Issued by: NWS Aberdeen, SD

Counties Big Stone County, MN, Traverse County, MN, Brown County, SD, Campbell County, SD, Corson County, SD, Grant County, SD, Marshall County, SD, McPherson County, SD, Roberts County, SD

The radar

The Aberdeen radar (KABR), 30 km from the middle of the area, began a volume at 20:41 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 12:00Z, 8.7 hours before the alert went out and 83 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: 1845 m above ground
0-6 km bulk shear: 70 kt
0-1 km storm-relative helicity: -93 m²/s²
0-3 km storm-relative helicity: 60 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 Feb 20, 11:45 AM CST, 2 hours 56 minutes earlier.

Area forecast discussion, Feb 20, 11:45 AM CST, 2 hours 56 minutes before

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Hazardous weather outlook, Feb 20, 5:34 AM CST, 9 hours 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
Feb 20, 2:41 PM CST	Wind Chill Advisory	ABR	Dewey, Faulk, Potter, Spink, Sully	27 hr
Feb 20, 2:41 PM CST	Winter Weather Advisory	ABR	Brown, Buffalo, Campbell, Clark, Codington, Corson and 17 more	54 hr

Nearby

Winter Storm Warnings in South Dakota, 2022 Winter Storm Warnings in Minnesota, 2022 Every winter storm warning in 2022

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.