Alert archive / Texas / Mesoscale Discussions in 2011

Mesoscale Discussion 1958

August 12, 201113 counties in Oklahoma; 16 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Aug 12, 2011, 2:54 PM CDT for 13 counties in Oklahoma; 16 counties in Texas. It was in force for 96 min.

The area

The outline as issued.

The facts

Issued: Aug 12, 2011, 2:54 PM CDT (19:54 UTC)
Expired: Aug 12, 2011, 4:30 PM CDT
In force: 96 min
Issued by: the Storm Prediction Center

All 29 counties

Canadian County, OK, Carter County, OK, Cleveland County, OK, Garvin County, OK, Grady County, OK, Jefferson County, OK, Love County, OK, McClain County, OK, Murray County, OK, Oklahoma County, OK, Pontotoc County, OK, Pottawatomie County, OK, Stephens County, OK, Bosque County, TX, Clay County, TX, Cooke County, TX, Coryell County, TX, Erath County, TX, Hamilton County, TX, Hood County, TX, Jack County, TX, Lampasas County, TX, Llano County, TX, Mills County, TX, Montague County, TX, Palo Pinto County, TX, Parker County, TX, Somervell County, TX, Wise County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 113 km from the middle of the area, began a volume at 19:55 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 773Aug 12, 3:20 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 12, 2:28 PM CDT	Mesoscale Discussion	SPC	Alfalfa, Garfield, Grant, Harper, Major, Woods and 1 more	62 min
Aug 12, 3:16 PM CDT	Severe Thunderstorm Watch	SPC	Adair, Alfalfa, Atoka, Blaine, Bryan, Caddo and 57 more	7 hr

Nearby

Mesoscale Discussions in Texas, 2011 Mesoscale Discussions in Oklahoma, 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.