Alert archive / Missouri / Mesoscale Discussions in 2012

Mesoscale Discussion 1844

August 31, 20125 states

The Storm Prediction Center issued this mesoscale discussion at Aug 31, 2012, 1:26 PM CDT for 5 states. It was in force for 64 min.

The area

The outline as issued.

The facts

Issued: Aug 31, 2012, 1:26 PM CDT (18:26 UTC)
Expired: Aug 31, 2012, 2:30 PM CDT
In force: 64 min
Issued by: the Storm Prediction Center
Chance of a watch: 80%

All 57 counties

Clay County, AR, Craighead County, AR, Greene County, AR, Alexander County, IL, Bond County, IL, Calhoun County, IL, Clinton County, IL, Franklin County, IL, Greene County, IL, Jackson County, IL, Jersey County, IL, Johnson County, IL, Macoupin County, IL, Madison County, IL, Monroe County, IL, Montgomery County, IL, Perry County, IL, Pulaski County, IL, Randolph County, IL, Saint Clair County, IL, Union County, IL, Washington County, IL, Williamson County, IL, Ballard County, KY, Carlisle County, KY, Fulton County, KY, Hickman County, KY, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, City of Saint Louis, MO, Dunklin County, MO, Franklin County, MO, Iron County, MO, Jefferson County, MO, Lincoln County, MO, Madison County, MO, Mississippi County, MO, New Madrid County, MO, Pemiscot County, MO, Perry County, MO, Reynolds County, MO, Ripley County, MO, Saint Charles County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Scott County, MO, Stoddard County, MO, Warren County, MO, Washington County, MO, Wayne County, MO, Dyer County, TN, Lake County, TN, Lauderdale County, TN, Obion County, TN

The radar

The Paducah radar (KPAH), 134 km from the middle of the area, began a volume at 18:25 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.

Issued	Product	Office	Counties	Lasted
Aug 30, 9:44 PM CDT	Tornado Watch	SPC	Phillips	5 hr
Aug 31, 1:56 PM CDT	Tornado Watch	SPC	Clay, Craighead, Greene, Lawrence, Mississippi, Poinsett and 1 more	8 hr
Aug 31, 6:01 PM CDT	Mesoscale Discussion	SPC	Clay, Craighead, Greene, Lawrence, Mississippi, Poinsett and 1 more	89 min
Aug 31, 3:53 PM CDT	Tornado Watch	SPC	Cass, Champaign, Christian, Clay, Coles, Cumberland and 15 more	5 hr

Nearby

Mesoscale Discussions in Missouri, 2012 Mesoscale Discussions in Illinois, 2012 Mesoscale Discussions in Kentucky, 2012 Every mesoscale discussion in 2012

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.