Alert archive / Montana / Mesoscale Discussions in 2009

Mesoscale Discussion 1402

July 2, 20094 states

The Storm Prediction Center issued this mesoscale discussion at Jul 2, 2009, 11:25 AM MDT for 4 states. It was in force for 65 min.

The area

The outline as issued.

The facts

Issued: Jul 2, 2009, 11:25 AM MDT (17:25 UTC)
Expired: Jul 2, 2009, 12:30 PM MDT
In force: 65 min
Issued by: the Storm Prediction Center

Counties Carter County, MT, Custer County, MT, Fallon County, MT, Powder River County, MT, Prairie County, MT, Rosebud County, MT, Wibaux County, MT, Bowman County, ND, Slope County, ND, Butte County, SD, Custer County, SD, Harding County, SD, Lawrence County, SD, Meade County, SD, Pennington County, SD, Perkins County, SD, Campbell County, WY, Crook County, WY, Sheridan County, WY, Weston County, WY

The radar

The Rapid City radar (KUDX), 207 km from the middle of the area, began a volume at 17:25 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 538Jul 2, 11:45 AM 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 2, 11:41 AM MDT	Severe Thunderstorm Watch	SPC	Big Horn, Carter, Custer, Dawson, Fallon, Garfield and 5 more	7 hr
Jul 2, 2:17 PM MDT	Mesoscale Discussion	SPC	Big Horn, Carter, Custer, Fallon, Garfield, Powder River and 4 more	88 min
Jul 2, 3:41 PM MDT	Mesoscale Discussion	SPC	Blaine, Broadwater, Carbon, Cascade, Chouteau, Fergus and 16 more	34 min
Jul 2, 4:12 PM MDT	Severe Thunderstorm Watch	SPC	Big Horn, Carbon, Golden Valley, Musselshell, Park, Stillwater and 4 more	4 hr
Jul 1, 6:38 PM MDT	Severe Thunderstorm Watch	SPC	Goshen	6 hr

Nearby

Mesoscale Discussions in Montana, 2009 Mesoscale Discussions in South Dakota, 2009 Mesoscale Discussions in Wyoming, 2009 Every mesoscale discussion in 2009

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.