Alert archive / Montana / Mesoscale Discussions in 2009

Mesoscale Discussion 2011

September 13, 200917 counties in Montana

The Storm Prediction Center issued this mesoscale discussion at Sep 13, 2009, 1:44 PM MDT for 17 counties in Montana. It was in force for 61 min.

The area

The outline as issued.

The facts

Issued
Sep 13, 2009, 1:44 PM MDT (19:44 UTC)
Expired
Sep 13, 2009, 2:45 PM MDT
In force
61 min
Issued by
the Storm Prediction Center

Counties Carter County, MT, Custer County, MT, Daniels County, MT, Dawson County, MT, Fallon County, MT, Garfield County, MT, McCone 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, Treasure County, MT, Valley County, MT

The radar

The Glasgow radar (KGGW), 103 km from the middle of the area, began a volume at 19:42 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.

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.

IssuedProductOfficeCountiesLasted
Sep 13, 2:35 PM MDTSevere Thunderstorm WatchSPCCuster, Daniels, Dawson, Fallon, Garfield, McCone and 8 more7 hr

Nearby

Mesoscale Discussions in Montana, 2009Every 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.