Alert archive / Texas / Mesoscale Discussions in 2003

Mesoscale Discussion 1968

July 23, 200313 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jul 23, 2003, 10:51 AM CDT for 13 counties in Texas. It was in force for 114 min.

The area

The outline as issued.

The facts

Issued: Jul 23, 2003, 10:51 AM CDT (15:51 UTC)
Expired: Jul 23, 2003, 12:45 PM CDT
In force: 114 min
Issued by: the Storm Prediction Center

Counties Bastrop County, TX, Blanco County, TX, Burleson County, TX, Burnet County, TX, Caldwell County, TX, Comal County, TX, Fayette County, TX, Hays County, TX, Kendall County, TX, Lee County, TX, Milam County, TX, Travis County, TX, Williamson County, TX

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 3.9 hours before the alert went out and 287 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: 2698 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 602 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: -72 m²/s²
0-3 km storm-relative helicity: 55 m²/s²
Significant tornado parameter: -0.4
Supercell composite: -2.5

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 22, 7:09 PM CDT	Mesoscale Discussion	SPC	Camp, Collin, Dallas, Denton, Eastland, Ellis and 29 more	96 min
Jul 22, 9:32 PM CDT	Mesoscale Discussion	SPC	Camp, Cherokee, Collin, Dallas, Ellis, Gregg and 18 more	58 min
Jul 23, 2:20 PM CDT	Mesoscale Discussion	SPC	Atascosa, Bandera, Bexar, Blanco, Comal, Edwards and 14 more	115 min
Jul 23, 6:30 PM CDT	Mesoscale Discussion	SPC	Andrews, Cochran, Crane, Ector, Gaines, Loving and 5 more	3 hr

Nearby

Mesoscale Discussions in Texas, 2003 Every mesoscale discussion in 2003

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.