Alert archive / Montana / Mesoscale Discussions in 2009

Mesoscale Discussion 1886

August 14, 200928 counties in Montana

The Storm Prediction Center issued this mesoscale discussion at Aug 14, 2009, 5:10 PM MDT for 28 counties in Montana. It was in force for 65 min.

The area

The outline as issued.

The facts

Issued: Aug 14, 2009, 5:10 PM MDT (23:10 UTC)
Expired: Aug 14, 2009, 6:15 PM MDT
In force: 65 min
Issued by: the Storm Prediction Center

All 28 counties

Big Horn County, MT, Blaine County, MT, Carbon County, MT, Custer County, MT, Daniels County, MT, Dawson County, MT, Fallon County, MT, Fergus County, MT, Garfield County, MT, Golden Valley County, MT, Judith Basin County, MT, McCone County, MT, Musselshell County, MT, Petroleum County, MT, Phillips County, MT, Powder River County, MT, Prairie County, MT, Richland County, MT, Roosevelt County, MT, Rosebud County, MT, Sheridan County, MT, Stillwater County, MT, Sweet Grass County, MT, Treasure County, MT, Valley County, MT, Wheatland County, MT, Wibaux County, MT, Yellowstone County, MT

The radar

The Billings radar (KBLX), 123 km from the middle of the area, began a volume at 23:11 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 705Aug 14, 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
Aug 13, 8:24 PM MDT	Mesoscale Discussion	SPC	Big Horn, Blaine, Carbon, Chouteau, Fergus, Garfield and 11 more	66 min
Aug 14, 1:03 PM MDT	Mesoscale Discussion	SPC	Beaverhead, Big Horn, Carbon, Gallatin, Golden Valley, Madison and 5 more	87 min
Aug 14, 2:01 PM MDT	Severe Thunderstorm Watch	SPC	Big Horn, Broadwater, Carbon, Cascade, Chouteau, Fergus and 13 more	6 hr

Nearby

Mesoscale Discussions in Montana, 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.