Alert archive / South Dakota / Mesoscale Discussions in 2020

Mesoscale Discussion 1647

August 30, 20204 states

The Storm Prediction Center issued this mesoscale discussion at Aug 30, 2020, 8:00 PM CDT for 4 states. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Aug 30, 2020, 8:00 PM CDT (01:00 UTC)
Expired: Aug 30, 2020, 10:00 PM CDT
In force: 2 hr
Issued by: the Storm Prediction Center
Concerning: Severe thunderstorm watch 475...476

All 54 counties

Big Stone County, MN, Traverse County, MN, Richland County, ND, Adams County, NE, Antelope County, NE, Blaine County, NE, Boone County, NE, Boyd County, NE, Buffalo County, NE, Custer County, NE, Dawson County, NE, Frontier County, NE, Garfield County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Holt County, NE, Howard County, NE, Kearney County, NE, Knox County, NE, Loup County, NE, Nance County, NE, Phelps County, NE, Rock County, NE, Sherman County, NE, Valley County, NE, Wheeler County, NE, Aurora County, SD, Beadle County, SD, Bon Homme County, SD, Brookings County, SD, Brule County, SD, Charles Mix County, SD, Clark County, SD, Codington County, SD, Davison County, SD, Day County, SD, Deuel County, SD, Douglas County, SD, Grant County, SD, Gregory County, SD, Hamlin County, SD, Hanson County, SD, Hutchinson County, SD, Jerauld County, SD, Kingsbury County, SD, Lake County, SD, Marshall County, SD, McCook County, SD, Miner County, SD, Roberts County, SD, Sanborn County, SD, Spink County, SD, Yankton County, SD

The radar

The Sioux Falls radar (KFSD), 151 km from the middle of the area, began a volume at 01:01 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
Aug 30, 11:42 PM CDT	Mesoscale Discussion	SPC	Adams, Buffalo, Butler, Clay, Fillmore, Franklin and 18 more	2 hr
Aug 31, 4:56 AM CDT	Mesoscale Discussion	SPC	Richardson	2 hr

Nearby

Mesoscale Discussions in South Dakota, 2020 Mesoscale Discussions in Nebraska, 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.