Alert archive / South Dakota / Mesoscale Discussions in 2013

Mesoscale Discussion 1892

September 18, 20135 states

The Storm Prediction Center issued this mesoscale discussion at Sep 18, 2013, 1:16 PM MDT for 5 states. It was in force for 89 min.

The area

The outline as issued.

The facts

Issued: Sep 18, 2013, 1:16 PM MDT (19:16 UTC)
Expired: Sep 18, 2013, 2:45 PM MDT
In force: 89 min
Issued by: the Storm Prediction Center
Chance of a watch: 20%

All 24 counties

Carter County, MT, Fallon County, MT, Powder River County, MT, Adams County, ND, Bowman County, ND, Hettinger County, ND, Slope County, ND, Box Butte County, NE, Dawes County, NE, Sioux County, NE, Butte County, SD, Custer County, SD, Fall River County, SD, Harding County, SD, Lawrence County, SD, Meade County, SD, Oglala Lakota County, SD, Pennington County, SD, Perkins County, SD, Ziebach County, SD, Campbell County, WY, Crook County, WY, Niobrara County, WY, Weston County, WY

The radar

The Rapid City radar (KUDX), 75 km from the middle of the area, began a volume at 19:17 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 527Sep 18, 4:00 PM MDT

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 17, 6:16 PM MDT	Mesoscale Discussion	SPC	Carbon	89 min
Sep 17, 6:29 PM MDT	Mesoscale Discussion	SPC	Carter, Custer, Dawson, Fallon, Powder River, Prairie and 3 more	61 min
Sep 18, 3:56 PM MDT	Severe Thunderstorm Watch	SPC	Dickey, Emmons, LaMoure, Logan, McIntosh, Sioux	7 hr
Sep 18, 4:56 PM MDT	Mesoscale Discussion	SPC	Barnes, Cass, Dickey, Ransom, Richland, Sargent	64 min
Sep 18, 5:10 PM MDT	Severe Thunderstorm Watch	SPC	Barnes, Cass, Ransom, Richland, Sargent, Traill	8 hr
Sep 17, 8:23 PM MDT	Mesoscale Discussion	SPC	Big Horn, Carbon, Fremont, Hot Springs, Lincoln, Park and 4 more	67 min

Nearby

Mesoscale Discussions in South Dakota, 2013 Mesoscale Discussions in North Dakota, 2013 Mesoscale Discussions in Wyoming, 2013 Every mesoscale discussion in 2013

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.