Alert archive / Montana / Mesoscale Discussions in 2011

Mesoscale Discussion 1483

July 3, 201125 counties in Montana

The Storm Prediction Center issued this mesoscale discussion at Jul 3, 2011, 12:31 PM MDT for 25 counties in Montana. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Jul 3, 2011, 12:31 PM MDT (18:31 UTC)
Expired: Jul 3, 2011, 3:00 PM MDT
In force: 2 hr
Issued by: the Storm Prediction Center

All 25 counties

Blaine County, MT, Broadwater County, MT, Cascade County, MT, Chouteau County, MT, Custer County, MT, Fergus County, MT, Gallatin County, MT, Garfield County, MT, Golden Valley County, MT, Hill County, MT, Judith Basin County, MT, McCone County, MT, Meagher County, MT, Musselshell County, MT, Park County, MT, Petroleum County, MT, Phillips County, MT, Prairie County, MT, Rosebud County, MT, Stillwater County, MT, Sweet Grass County, MT, Treasure County, MT, Valley County, MT, Wheatland County, MT, Yellowstone County, MT

The radar

The Billings radar (KBLX), 116 km from the middle of the area, began a volume at 18:28 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 590Jul 3, 4:10 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 2, 6:48 PM MDT	Mesoscale Discussion	SPC	Carter, Custer, Fallon, Powder River	117 min
Jul 3, 4:08 PM MDT	Severe Thunderstorm Watch	SPC	Big Horn, Blaine, Carbon, Carter, Chouteau, Custer and 23 more	8 hr

Nearby

Mesoscale Discussions in Montana, 2011 Every mesoscale discussion in 2011

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.