Alert archive / Montana / Mesoscale Discussions in 2003

Mesoscale Discussion 1429

June 20, 200321 counties in Montana; 7 counties in North Dakota; Harding County, South Dakota

The Storm Prediction Center issued this mesoscale discussion at Jun 20, 2003, 3:25 PM MDT for 21 counties in Montana; 7 counties in North Dakota; Harding County, South Dakota. It was in force for 65 min.

The area

The outline as issued.

The facts

Issued
Jun 20, 2003, 3:25 PM MDT (21:25 UTC)
Expired
Jun 20, 2003, 4:30 PM MDT
In force
65 min
Issued by
the Storm Prediction Center
All 29 counties

Big Horn County, MT, Carter County, MT, Custer County, MT, Daniels County, MT, Dawson County, MT, Fallon County, MT, Garfield 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, Treasure County, MT, Valley County, MT, Wibaux County, MT, Yellowstone County, MT, Billings County, ND, Bowman County, ND, Divide County, ND, Golden Valley County, ND, McKenzie County, ND, Slope County, ND, Williams County, ND, Harding County, SD

The radar

The Glasgow radar (KGGW), 90 km from the middle of the area, began a volume at 21:27 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
Jun 20, 11:36 AM MDTMesoscale DiscussionSPCBlaine, Broadwater, Carbon, Cascade, Chouteau, Fergus and 17 more114 min
Jun 20, 12:05 PM MDTSevere Thunderstorm WatchSPCBlaine, Broadwater, Carbon, Cascade, Chouteau, Fergus and 12 more8 hr
Jun 20, 2:39 PM MDTMesoscale DiscussionSPCBlaine, Broadwater, Cascade, Chouteau, Fergus, Gallatin and 9 more96 min
Jun 20, 3:30 PM MDTSevere Thunderstorm WatchSPCBig Horn, Carter, Custer, Daniels, Dawson, Fallon and 15 more8 hr
Jun 20, 4:43 PM MDTMesoscale DiscussionSPCBig Horn, Blaine, Carter, Custer, Daniels, Dawson and 16 more62 min
Jun 20, 2:25 PM MDTSevere Thunderstorm WatchSPCBennett, Butte, Custer, Fall River, Lawrence, Meade and 2 more7 hr
Jun 20, 5:45 PM MDTMesoscale DiscussionSPCBennett, Butte, Custer, Fall River, Lawrence, Meade and 2 more60 min

Nearby

Mesoscale Discussions in Montana, 2003Mesoscale Discussions in North Dakota, 2003Mesoscale Discussions in South Dakota, 2003Every mesoscale discussion in 2003

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.