Alert archive / North Dakota / Mesoscale Discussions in 2015

Mesoscale Discussion 1685

August 15, 201517 counties in North Dakota; Campbell County, McPherson County, South Dakota

The Storm Prediction Center issued this mesoscale discussion at Aug 15, 2015, 3:38 PM CDT for 17 counties in North Dakota; Campbell County, McPherson County, South Dakota. It was in force for 67 min.

The area

The outline as issued.

The facts

Issued: Aug 15, 2015, 3:38 PM CDT (20:38 UTC)
Expired: Aug 15, 2015, 4:45 PM CDT
In force: 67 min
Issued by: the Storm Prediction Center
Chance of a watch: 60%

Counties Benson County, ND, Cavalier County, ND, Dickey County, ND, Eddy County, ND, Emmons County, ND, Foster County, ND, Griggs County, ND, Kidder County, ND, LaMoure County, ND, Logan County, ND, McIntosh County, ND, Nelson County, ND, Ramsey County, ND, Stutsman County, ND, Towner County, ND, Walsh County, ND, Wells County, ND, Campbell County, SD, McPherson County, SD

The radar

The Bismarck radar (KBIS), 96 km from the middle of the area, began a volume at 20:39 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 489Aug 15, 6:10 PM CDT

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
Aug 15, 6:13 PM CDT	Severe Thunderstorm Watch	SPC	Barnes, Benson, Cass, Cavalier, Dickey, Eddy and 16 more	6 hr
Aug 15, 6:41 PM CDT	Mesoscale Discussion	SPC	Aurora, Beadle, Brown, Buffalo, Clark, Day and 5 more	94 min

Nearby

Mesoscale Discussions in North Dakota, 2015 Mesoscale Discussions in South Dakota, 2015 Every mesoscale discussion in 2015

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.