Alert archive / Montana / Mesoscale Discussions in 2013

Mesoscale Discussion 1890

September 17, 20134 states

The Storm Prediction Center issued this mesoscale discussion at Sep 17, 2013, 6:29 PM MDT for 4 states. It was in force for 61 min.

The area

The outline as issued.

The facts

Issued: Sep 17, 2013, 6:29 PM MDT (00:29 UTC)
Expired: Sep 17, 2013, 7:30 PM MDT
In force: 61 min
Issued by: the Storm Prediction Center
Chance of a watch: 20%

Counties Carter County, MT, Custer County, MT, Dawson County, MT, Fallon County, MT, Powder River County, MT, Prairie County, MT, Richland County, MT, Rosebud County, MT, Wibaux County, MT, Billings County, ND, Bowman County, ND, Golden Valley County, ND, McKenzie County, ND, Slope County, ND, Butte County, SD, Harding County, SD, Crook County, WY

The radar

The Rapid City radar (KUDX), 250 km from the middle of the area, began a volume at 00:29 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, 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 18, 1:16 PM MDT	Mesoscale Discussion	SPC	Carter, Fallon, Powder River	89 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 Montana, 2013 Mesoscale Discussions in North Dakota, 2013 Mesoscale Discussions in South Dakota, 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.