Alert archive / Louisiana / Mesoscale Discussions in 2011

Mesoscale Discussion 2047

August 24, 2011Columbia County, Lafayette County, Miller County, Arkansas; 18 parishes in Louisiana; 6 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Aug 24, 2011, 12:06 PM CDT for Columbia County, Lafayette County, Miller County, Arkansas; 18 parishes in Louisiana; 6 counties in Texas. It was in force for 114 min.

The area

The outline as issued.

The facts

Issued: Aug 24, 2011, 12:06 PM CDT (17:06 UTC)
Expired: Aug 24, 2011, 2:00 PM CDT
In force: 114 min
Issued by: the Storm Prediction Center

All 27 counties

Columbia County, AR, Lafayette County, AR, Miller County, AR, Bienville Parish, LA, Bossier Parish, LA, Caddo Parish, LA, Caldwell Parish, LA, Claiborne Parish, LA, De Soto Parish, LA, Grant Parish, LA, Jackson Parish, LA, LaSalle Parish, LA, Lincoln Parish, LA, Natchitoches Parish, LA, Ouachita Parish, LA, Rapides Parish, LA, Red River Parish, LA, Sabine Parish, LA, Vernon Parish, LA, Webster Parish, LA, Winn Parish, LA, Cass County, TX, Harrison County, TX, Marion County, TX, Panola County, TX, Sabine County, TX, Shelby County, TX

The radar

The Shreveport radar (KSHV), 34 km from the middle of the area, began a volume at 17:05 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 801Aug 24, 1:15 PM CDT

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 24, 1:17 PM CDT	Severe Thunderstorm Watch	SPC	Bienville, Bossier, Caddo, Caldwell, De Soto, Grant and 6 more	4 hr
Aug 24, 3:50 PM CDT	Mesoscale Discussion	SPC	Grant, LaSalle, Natchitoches, Rapides, Sabine, Vernon	85 min
Aug 24, 4:44 PM CDT	Mesoscale Discussion	SPC	Armstrong, Briscoe, Carson, Childress, Collingsworth, Deaf Smith and 10 more	91 min

Nearby

Mesoscale Discussions in Louisiana, 2011 Mesoscale Discussions in Texas, 2011 Mesoscale Discussions in Arkansas, 2011 Every mesoscale discussion in 2011

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.