Alert archive / South Dakota / Mesoscale Discussions in 2023

Mesoscale Discussion 451

April 4, 20236 counties in South Dakota; Niobrara County, Weston County, Wyoming

The Storm Prediction Center issued this mesoscale discussion at Apr 4, 2023, 12:41 AM MDT for 6 counties in South Dakota; Niobrara County, Weston County, Wyoming. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued: Apr 4, 2023, 12:41 AM MDT (06:41 UTC)
Expired: Apr 4, 2023, 4:45 AM MDT
In force: 4 hr
Issued by: the Storm Prediction Center
Concerning: Heavy snow

Counties Custer County, SD, Fall River County, SD, Haakon County, SD, Lawrence County, SD, Meade County, SD, Pennington County, SD, Niobrara County, WY, Weston County, WY

The radar

The Rapid City radar (KUDX), 37 km from the middle of the area, began a volume at 06:43 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
Apr 4, 5:46 AM MDT	Mesoscale Discussion	SPC	Fall River, Haakon, Pennington	29 min
Apr 4, 2:45 PM MDT	Mesoscale Discussion	SPC	Campbell, McPherson	4 hr

Nearby

Mesoscale Discussions in South Dakota, 2023 Mesoscale Discussions in Wyoming, 2023 Every mesoscale discussion in 2023

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.