Alert archive / South Dakota / Mesoscale Discussions in 2015

Mesoscale Discussion 1644

August 8, 2015Carter County, Montana; 6 counties in South Dakota; Campbell County, Crook County, Weston County, Wyoming

The Storm Prediction Center issued this mesoscale discussion at Aug 8, 2015, 2:18 PM MDT for Carter County, Montana; 6 counties in South Dakota; Campbell County, Crook County, Weston County, Wyoming. It was in force for 87 min.

The area

The outline as issued.

The facts

Issued: Aug 8, 2015, 2:18 PM MDT (20:18 UTC)
Expired: Aug 8, 2015, 3:45 PM MDT
In force: 87 min
Issued by: the Storm Prediction Center
Chance of a watch: 60%

Counties Carter County, MT, Butte County, SD, Custer County, SD, Harding County, SD, Lawrence County, SD, Meade County, SD, Pennington County, SD, Campbell County, WY, Crook County, WY, Weston County, WY

The radar

The Rapid City radar (KUDX), 111 km from the middle of the area, began a volume at 20:20 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 481Aug 8, 3:05 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
Aug 8, 3:05 PM MDT	Severe Thunderstorm Watch	SPC	Carter, Powder River	7 hr

Nearby

Mesoscale Discussions in South Dakota, 2015 Mesoscale Discussions in Wyoming, 2015 Mesoscale Discussions in Montana, 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.