Alert archive / Texas / Mesoscale Discussions in 2007

Mesoscale Discussion 880

May 24, 200710 counties in Oklahoma; 11 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 24, 2007, 10:04 AM CDT for 10 counties in Oklahoma; 11 counties in Texas. It was in force for 116 min.

The area

The outline as issued.

The facts

Issued: May 24, 2007, 10:04 AM CDT (15:04 UTC)
Expired: May 24, 2007, 12:00 PM CDT
In force: 116 min
Issued by: the Storm Prediction Center

All 21 counties

Carter County, OK, Coal County, OK, Garvin County, OK, Jefferson County, OK, Johnston County, OK, Love County, OK, Marshall County, OK, Murray County, OK, Pontotoc County, OK, Stephens County, OK, Archer County, TX, Clay County, TX, Cooke County, TX, Jack County, TX, Montague County, TX, Palo Pinto County, TX, Shackelford County, TX, Stephens County, TX, Throckmorton County, TX, Wise County, TX, Young County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 135 km from the middle of the area, began a volume at 15:04 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 nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 3.1 hours before the alert went out and 108 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 883 J/kg
Mixed-layer CIN: -77 J/kg
Mixed-layer LCL: 713 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 143 m²/s²
0-3 km storm-relative helicity: 220 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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
May 23, 10:12 PM CDT	Mesoscale Discussion	SPC	Beaver, Ellis, Harper, Roger Mills, Texas, Woodward	63 min
May 23, 10:48 PM CDT	Tornado Watch	SPC	Alfalfa, Beaver, Dewey, Ellis, Harper, Major and 3 more	4 hr
May 24, 2:06 AM CDT	Mesoscale Discussion	SPC	Alfalfa, Beckham, Blaine, Canadian, Custer, Dewey and 11 more	54 min
May 24, 2:41 AM CDT	Severe Thunderstorm Watch	SPC	Alfalfa, Beckham, Blaine, Caddo, Canadian, Custer and 14 more	3 hr
May 24, 5:19 AM CDT	Mesoscale Discussion	SPC	Blaine, Caddo, Canadian, Garfield, Greer, Harmon and 6 more	56 min
May 24, 2:49 PM CDT	Mesoscale Discussion	SPC	Brown, Callahan, Coke, Coleman, Comanche, Concho and 18 more	2 hr

Nearby

Mesoscale Discussions in Texas, 2007 Mesoscale Discussions in Oklahoma, 2007 Every mesoscale discussion in 2007

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.