Alert archive / Texas / Mesoscale Discussions in 2004

Mesoscale Discussion 124

February 23, 200419 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Feb 23, 2004, 11:51 PM CST for 19 counties in Texas. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued: Feb 23, 2004, 11:51 PM CST (05:51 UTC)
Expired: Feb 24, 2004, 3:45 AM CST
In force: 4 hr
Issued by: the Storm Prediction Center

Counties Bee County, TX, Brooks County, TX, Cameron County, TX, Duval County, TX, Hidalgo County, TX, Jim Hogg County, TX, Jim Wells County, TX, Kenedy County, TX, Kleberg County, TX, La Salle County, TX, Live Oak County, TX, McMullen County, TX, Nueces County, TX, Refugio County, TX, San Patricio County, TX, Starr County, TX, Webb County, TX, Willacy County, TX, Zapata County, TX

The nearest sounding before it

Corpus Christi, TX (KCRP), launched 00:00Z, 5.9 hours before the alert went out and 143 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: 774 J/kg
Mixed-layer CIN: -39 J/kg
Mixed-layer LCL: 1119 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: -44 m²/s²
0-3 km storm-relative helicity: 14 m²/s²
Significant tornado parameter: -0.1
Supercell composite: -0.9

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 24, 10:16 AM CST	Mesoscale Discussion	SPC	Aransas, Duval, Jim Wells, Kleberg, Nueces, Refugio and 1 more	119 min
Feb 24, 3:48 PM CST	Mesoscale Discussion	SPC	Dimmit, Duval, Frio, Kinney, La Salle, McMullen and 5 more	117 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.