Alert archive / Texas / Mesoscale Discussions in 2004

Mesoscale Discussion 122

February 23, 200414 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Feb 23, 2004, 6:19 PM CST for 14 counties in Texas. It was in force for 86 min.

The area

The outline as issued.

The facts

Issued
Feb 23, 2004, 6:19 PM CST (00:19 UTC)
Expired
Feb 23, 2004, 7:45 PM CST
In force
86 min
Issued by
the Storm Prediction Center

Counties Bandera County, TX, Bastrop County, TX, Bell County, TX, Caldwell County, TX, Comal County, TX, Coryell County, TX, Falls County, TX, Hays County, TX, Kendall County, TX, Limestone County, TX, McLennan County, TX, Milam County, TX, Travis County, TX, Williamson County, TX

The nearest sounding before it

Del Rio, TX (KDRT), launched 00:00Z, 0.3 hours before the alert went out and 296 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-pSkew-T log-p diagram, Del Rio, TX at 00:00Z on 2004-02-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 13 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Del Rio, TX at 00:00Z on 2004-02-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -38 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
13 J/kg
Mixed-layer CIN
-66 J/kg
Mixed-layer LCL
2492 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
-38 m²/s²
0-3 km storm-relative helicity
31 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.

IssuedProductOfficeCountiesLasted
Feb 23, 8:10 PM CSTMesoscale DiscussionSPCDimmit, Kinney, La Salle, Maverick, Uvalde, Zavala2 hr
Feb 23, 11:51 PM CSTMesoscale DiscussionSPCBee, Brooks, Cameron, Duval, Hidalgo, Jim Hogg and 13 more4 hr
Feb 24, 10:16 AM CSTMesoscale DiscussionSPCAransas, Duval, Jim Wells, Kleberg, Nueces, Refugio and 1 more119 min
Feb 24, 3:48 PM CSTMesoscale DiscussionSPCDimmit, Duval, Frio, Kinney, La Salle, McMullen and 5 more117 min

Nearby

Mesoscale Discussions in Texas, 2004Every 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.