Alert archive / North Dakota / Mesoscale Discussions in 2004

Mesoscale Discussion 1745

July 20, 200428 counties in North Dakota; 9 counties in South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jul 20, 2004, 6:20 PM MDT for 28 counties in North Dakota; 9 counties in South Dakota. It was in force for 85 min.

The area

The outline as issued.

The facts

Issued: Jul 20, 2004, 6:20 PM MDT (00:20 UTC)
Expired: Jul 20, 2004, 7:45 PM MDT
In force: 85 min
Issued by: the Storm Prediction Center

All 37 counties

Adams County, ND, Benson County, ND, Bottineau County, ND, Burleigh County, ND, Cavalier County, ND, Eddy County, ND, Emmons County, ND, Foster County, ND, Grant County, ND, Hettinger County, ND, Kidder County, ND, Logan County, ND, McHenry County, ND, McIntosh County, ND, McLean County, ND, Mercer County, ND, Morton County, ND, Oliver County, ND, Pierce County, ND, Ramsey County, ND, Renville County, ND, Rolette County, ND, Sheridan County, ND, Sioux County, ND, Stutsman County, ND, Towner County, ND, Ward County, ND, Wells County, ND, Campbell County, SD, Corson County, SD, Dewey County, SD, Edmunds County, SD, McPherson County, SD, Perkins County, SD, Potter County, SD, Walworth County, SD, Ziebach County, SD

The radar

The Bismarck radar (KBIS), 44 km from the middle of the area, began a volume at 00:24 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 660Jul 20, 8:00 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
Jul 20, 8:00 PM MDT	Severe Thunderstorm Watch	SPC	McIntosh	4 hr
Jul 21, 12:30 PM MDT	Mesoscale Discussion	SPC	Dickey, Richland, Sargent	2 hr
Jul 21, 12:50 PM MDT	Severe Thunderstorm Watch	SPC	Beadle, Brookings, Brown, Clark, Codington, Day and 7 more	5 hr
Jul 21, 2:43 PM MDT	Mesoscale Discussion	SPC	Aurora, Bon Homme, Brule, Charles Mix, Clay, Davison and 15 more	92 min
Jul 21, 5:02 PM MDT	Mesoscale Discussion	SPC	Aurora, Bon Homme, Brookings, Charles Mix, Clark, Clay and 20 more	118 min

Nearby

Mesoscale Discussions in North Dakota, 2004 Mesoscale Discussions in South Dakota, 2004 Every mesoscale discussion in 2004

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.