Alert archive / Wyoming / Mesoscale Discussions in 2023

Mesoscale Discussion 2174

September 22, 20235 counties in Nebraska; Custer County, Fall River County, Lawrence County, South Dakota; 7 counties in Wyoming

The Storm Prediction Center issued this mesoscale discussion at Sep 22, 2023, 12:18 PM MDT for 5 counties in Nebraska; Custer County, Fall River County, Lawrence County, South Dakota; 7 counties in Wyoming. It was in force for 117 min.

The area

The outline as issued.

The facts

Issued: Sep 22, 2023, 12:18 PM MDT (18:18 UTC)
Expired: Sep 22, 2023, 2:15 PM MDT
In force: 117 min
Issued by: the Storm Prediction Center
Concerning: Severe potential...watch possible
Chance of a watch: 60%

Counties Banner County, NE, Box Butte County, NE, Dawes County, NE, Scotts Bluff County, NE, Sioux County, NE, Custer County, SD, Fall River County, SD, Lawrence County, SD, Campbell County, WY, Converse County, WY, Goshen County, WY, Johnson County, WY, Niobrara County, WY, Platte County, WY, Weston County, WY

The radar

The Rapid City radar (KUDX), 200 km from the middle of the area, began a volume at 18:17 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

Severe Thunderstorm Watch 689Sep 22, 1:35 PM MDT

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
Sep 21, 6:06 PM MDT	Mesoscale Discussion	SPC	Furnas, Harlan, Red Willow	114 min
Sep 22, 1:36 PM MDT	Severe Thunderstorm Watch	SPC	Banner, Box Butte, Cheyenne, Dawes, Garden, Kimball and 4 more	7 hr
Sep 22, 4:26 PM MDT	Mesoscale Discussion	SPC	Banner, Box Butte, Cheyenne, Deuel, Garden, Kimball and 3 more	2 hr

Nearby

Mesoscale Discussions in Wyoming, 2023 Mesoscale Discussions in Nebraska, 2023 Mesoscale Discussions in South Dakota, 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.