Alert archive / South Dakota / Mesoscale Discussions in 2020

Mesoscale Discussion 1863

December 23, 20205 counties in Minnesota; 16 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Dec 23, 2020, 7:42 AM CST for 5 counties in Minnesota; 16 counties in South Dakota. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Dec 23, 2020, 7:42 AM CST (13:42 UTC)
Expired: Dec 23, 2020, 12:45 PM CST
In force: 5 hr
Issued by: the Storm Prediction Center
Concerning: Heavy snow

All 21 counties

Big Stone County, MN, Grant County, MN, Lac qui Parle County, MN, Stevens County, MN, Traverse County, MN, Brookings County, SD, Codington County, SD, Davison County, SD, Deuel County, SD, Grant County, SD, Hamlin County, SD, Hanson County, SD, Hutchinson County, SD, Kingsbury County, SD, Lake County, SD, McCook County, SD, Miner County, SD, Minnehaha County, SD, Moody County, SD, Roberts County, SD, Sanborn County, SD

The radar

The Sioux Falls radar (KFSD), 105 km from the middle of the area, began a volume at 13:43 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 text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 23, 9:38 AM CST	Mesoscale Discussion	SPC	Benton, Brown, Chippewa, Cottonwood, Crow Wing, Douglas and 26 more	5 hr
Dec 23, 12:33 PM CST	Mesoscale Discussion	SPC	Aitkin, Anoka, Blue Earth, Carlton, Carver, Chisago and 18 more	4 hr
Dec 23, 5:15 PM CST	Mesoscale Discussion	SPC	Anoka, Blue Earth, Brown, Carlton, Carver, Chisago and 28 more	6 hr

Nearby

Mesoscale Discussions in South Dakota, 2020 Mesoscale Discussions in Minnesota, 2020 Every mesoscale discussion in 2020

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.