Alert archive / Texas / Mesoscale Discussions in 2007

Mesoscale Discussion 1291

June 26, 200716 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 26, 2007, 7:53 PM CDT for 16 counties in Texas. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued: Jun 26, 2007, 7:53 PM CDT (00:53 UTC)
Expired: Jun 26, 2007, 10:30 PM CDT
In force: 3 hr
Issued by: the Storm Prediction Center

Counties Bell County, TX, Coryell County, TX, Falls County, TX, Freestone County, TX, Henderson County, TX, Kaufman County, TX, Lampasas County, TX, Leon County, TX, Limestone County, TX, Madison County, TX, McLennan County, TX, Milam County, TX, Navarro County, TX, Robertson County, TX, Van Zandt County, TX, Williamson County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 102 km from the middle of the area, began a volume at 00:53 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 00:00Z, 0.9 hours before the alert went out and 128 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1071 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: -104 m²/s²
0-3 km storm-relative helicity: -50 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
Jun 26, 8:32 PM CDT	Mesoscale Discussion	SPC	Andrews, Bailey, Borden, Briscoe, Cochran, Crane and 32 more	118 min
Jun 26, 8:57 PM CDT	Mesoscale Discussion	SPC	Armstrong, Dallam, Deaf Smith, Hartley, Oldham, Sherman	2 hr
Jun 26, 11:08 PM CDT	Mesoscale Discussion	SPC	Andrews, Borden, Brewster, Crane, Crockett, Culberson and 21 more	97 min
Jun 26, 11:33 PM CDT	Severe Thunderstorm Watch	SPC	Brewster, Coke, Crockett, Edwards, Fisher, Irion and 11 more	5 hr
Jun 27, 2:03 AM CDT	Mesoscale Discussion	SPC	Callahan, Coleman, Concho, Gillespie, Jones, Kimble and 8 more	87 min
Jun 27, 2:21 AM CDT	Mesoscale Discussion	SPC	Atascosa, Bandera, Bexar, Brewster, Crockett, Dimmit and 18 more	84 min
Jun 27, 4:35 AM CDT	Mesoscale Discussion	SPC	Bandera, Edwards, Kerr, Kimble, Kinney, Medina and 4 more	85 min
Jun 27, 2:49 PM CDT	Mesoscale Discussion	SPC	Anderson, Bell, Bosque, Collin, Cooke, Coryell and 33 more	116 min

Nearby

Mesoscale Discussions in Texas, 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.