Alert archive / Texas / Mesoscale Discussions in 2008

Mesoscale Discussion 1245

June 6, 200816 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 6, 2008, 2:09 AM CDT for 16 counties in Texas. It was in force for 66 min.

The area

The outline as issued.

The facts

Issued: Jun 6, 2008, 2:09 AM CDT (07:09 UTC)
Expired: Jun 6, 2008, 3:15 AM CDT
In force: 66 min
Issued by: the Storm Prediction Center

Counties Callahan County, TX, Coleman County, TX, Comanche County, TX, Cooke County, TX, Denton County, TX, Eastland County, TX, Erath County, TX, Hood County, TX, Jack County, TX, Montague County, TX, Palo Pinto County, TX, Parker County, TX, Runnels County, TX, Stephens County, TX, Tarrant County, TX, Wise County, TX

The radar

The Dyess AFB radar (KDYX), 84 km from the middle of the area, began a volume at 07:12 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

Norman, OK (KOUN), launched 00:00Z, 7.2 hours before the alert went out and 288 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: 2209 J/kg
Mixed-layer CIN: -40 J/kg
Mixed-layer LCL: 1457 m above ground
0-6 km bulk shear: 66 kt
0-1 km storm-relative helicity: 339 m²/s²
0-3 km storm-relative helicity: 408 m²/s²
Significant tornado parameter: 3.2
Supercell composite: 21.2

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
Jun 5, 7:13 PM CDT	Mesoscale Discussion	SPC	Archer, Baylor, Callahan, Clay, Fisher, Foard and 17 more	62 min
Jun 5, 7:41 PM CDT	Tornado Watch	SPC	Archer, Baylor, Callahan, Clay, Cooke, Eastland and 22 more	7 hr
Jun 5, 9:19 PM CDT	Mesoscale Discussion	SPC	Archer, Baylor, Callahan, Clay, Cooke, Denton and 22 more	116 min
Jun 5, 9:58 PM CDT	Mesoscale Discussion	SPC	Coke, Coleman, Concho, Crockett, Irion, McCulloch and 8 more	2 hr
Jun 5, 11:28 PM CDT	Mesoscale Discussion	SPC	Callahan, Clay, Cooke, Eastland, Grayson, Jack and 8 more	92 min

Nearby

Mesoscale Discussions in Texas, 2008 Every mesoscale discussion in 2008

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.