Alert archive / Texas / Mesoscale Discussions in 2004

Mesoscale Discussion 128

February 24, 200411 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Feb 24, 2004, 3:48 PM CST for 11 counties in Texas. It was in force for 117 min.

The area

The outline as issued.

The facts

Issued: Feb 24, 2004, 3:48 PM CST (21:48 UTC)
Expired: Feb 24, 2004, 5:45 PM CST
In force: 117 min
Issued by: the Storm Prediction Center

Counties Dimmit County, TX, Duval County, TX, Frio County, TX, Kinney County, TX, La Salle County, TX, Maverick County, TX, McMullen County, TX, Real County, TX, Uvalde County, TX, Webb County, TX, Zavala County, TX

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 12:00Z, 9.8 hours before the alert went out and 250 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: 580 J/kg
Mixed-layer CIN: -64 J/kg
Mixed-layer LCL: 632 m above ground
0-6 km bulk shear: 68 kt
0-1 km storm-relative helicity: 74 m²/s²
0-3 km storm-relative helicity: 251 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 2.6

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
Feb 23, 6:19 PM CST	Mesoscale Discussion	SPC	Bandera, Bastrop, Bell, Caldwell, Comal, Coryell and 8 more	86 min
Feb 23, 8:10 PM CST	Mesoscale Discussion	SPC	Dimmit, Kinney, La Salle, Maverick, Uvalde, Zavala	2 hr
Feb 23, 11:51 PM CST	Mesoscale Discussion	SPC	Bee, Brooks, Cameron, Duval, Hidalgo, Jim Hogg and 13 more	4 hr
Feb 24, 10:16 AM CST	Mesoscale Discussion	SPC	Aransas, Duval, Jim Wells, Kleberg, Nueces, Refugio and 1 more	119 min

Nearby

Mesoscale Discussions in Texas, 2004 Every mesoscale discussion in 2004

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.