Alert archive / Montana / Mesoscale Discussions in 2009

Mesoscale Discussion 1889

August 14, 200912 counties in Montana; 6 counties in North Dakota

The Storm Prediction Center issued this mesoscale discussion at Aug 14, 2009, 10:47 PM MDT for 12 counties in Montana; 6 counties in North Dakota. It was in force for 58 min.

The area

The outline as issued.

The facts

Issued
Aug 14, 2009, 10:47 PM MDT (04:47 UTC)
Expired
Aug 14, 2009, 11:45 PM MDT
In force
58 min
Issued by
the Storm Prediction Center

Counties Custer County, MT, Daniels County, MT, Dawson County, MT, Fallon County, MT, Garfield County, MT, McCone County, MT, Prairie County, MT, Richland County, MT, Roosevelt County, MT, Rosebud County, MT, Sheridan County, MT, Wibaux County, MT, Billings County, ND, Divide County, ND, Golden Valley County, ND, McKenzie County, ND, Slope County, ND, Williams County, ND

The radar

The Glasgow radar (KGGW), 150 km from the middle of the area, began a volume at 04:47 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 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
Aug 14, 8:00 PM MDTSevere Thunderstorm WatchSPCCuster, Daniels, Dawson, Fallon, Garfield, McCone and 7 more6 hr
Aug 15, 1:31 AM MDTMesoscale DiscussionSPCDawson, Richland, Roosevelt89 min
Aug 14, 7:37 PM MDTMesoscale DiscussionSPCBarnes, Cass, Griggs, Ransom, Richland, Sargent and 2 more53 min

Nearby

Mesoscale Discussions in Montana, 2009Mesoscale Discussions in North Dakota, 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.