Alert archive / Texas / Mesoscale Discussions in 2007

Mesoscale Discussion 1355

July 2, 200712 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jul 2, 2007, 1:35 PM CDT for 12 counties in Texas. It was in force for 85 min.

The area

The outline as issued.

The facts

Issued: Jul 2, 2007, 1:35 PM CDT (18:35 UTC)
Expired: Jul 2, 2007, 3:00 PM CDT
In force: 85 min
Issued by: the Storm Prediction Center

Counties Coke County, TX, Concho County, TX, Irion County, TX, Mason County, TX, McCulloch County, TX, Menard County, TX, Mills County, TX, Mitchell County, TX, San Saba County, TX, Schleicher County, TX, Sterling County, TX, Tom Green County, TX

The nearest sounding before it

Midland Regional, TX (KMAF), launched 12:00Z, 6.6 hours before the alert went out and 210 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: 1054 J/kg
Mixed-layer CIN: -203 J/kg
Mixed-layer LCL: 1502 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: -90 m²/s²
0-3 km storm-relative helicity: -32 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

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
Jul 2, 6:01 AM CDT	Mesoscale Discussion	SPC	Aransas, Austin, Brazoria, Calhoun, Chambers, Colorado and 19 more	2 hr

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.