Alert archive / Texas / Mesoscale Discussions in 2004

Mesoscale Discussion 1031

May 31, 200439 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 31, 2004, 11:31 PM CDT for 39 counties in Texas. It was in force for 59 min.

The area

The outline as issued.

The facts

Issued
May 31, 2004, 11:31 PM CDT (04:31 UTC)
Expired
Jun 1, 2004, 12:30 AM CDT
In force
59 min
Issued by
the Storm Prediction Center
All 39 counties

Anderson County, TX, Austin County, TX, Bell County, TX, Brazoria County, TX, Brazos County, TX, Burleson County, TX, Chambers County, TX, Cherokee County, TX, Colorado County, TX, Ellis County, TX, Falls County, TX, Fayette County, TX, Fort Bend County, TX, Freestone County, TX, Grimes County, TX, Harris County, TX, Henderson County, TX, Hill County, TX, Houston County, TX, Johnson County, TX, Lavaca County, TX, Lee County, TX, Leon County, TX, Liberty County, TX, Limestone County, TX, Madison County, TX, McLennan County, TX, Milam County, TX, Montgomery County, TX, Navarro County, TX, Polk County, TX, Robertson County, TX, San Jacinto County, TX, Tarrant County, TX, Trinity County, TX, Walker County, TX, Waller County, TX, Washington County, TX, Wharton County, TX

The watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 4.5 hours before the alert went out and 261 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, Fort Worth, TX at 00:00Z on 2004-06-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 82 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, Fort Worth, TX at 00:00Z on 2004-06-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 40 square meters per square second.193958Sfc1 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
82 J/kg
Mixed-layer CIN
-122 J/kg
Mixed-layer LCL
1991 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
40 m²/s²
0-3 km storm-relative helicity
339 m²/s²
Significant tornado parameter
0.0
Supercell composite
8.3

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
May 31, 9:45 PM CDTSevere Thunderstorm WatchSPCAnderson, Bell, Brazos, Cherokee, Ellis, Falls and 19 more4 hr
May 31, 11:15 PM CDTSevere Thunderstorm WatchSPCAustin, Brazoria, Brazos, Chambers, Colorado, Fort Bend and 6 more3 hr
Jun 1, 1:35 AM CDTSevere Thunderstorm WatchSPCAnderson, Angelina, Bastrop, Bell, Blanco, Brazos and 49 more5 hr
Jun 1, 3:41 AM CDTMesoscale DiscussionSPCAnderson, Angelina, Bastrop, Bell, Blanco, Brazos and 50 more94 min
Jun 1, 6:42 AM CDTMesoscale DiscussionSPCAngelina, Houston, Jasper, Nacogdoches, Newton, Panola and 6 more2 hr
Jun 1, 2:43 PM CDTMesoscale DiscussionSPCAnderson, Bastrop, Bell, Blanco, Bosque, Brazos and 55 more2 hr
Jun 1, 3:50 PM CDTTornado WatchSPCArcher, Bandera, Baylor, Blanco, Bosque, Brown and 46 more6 hr
Jun 1, 5:04 PM CDTMesoscale DiscussionSPCAnderson, Collin, Dallas, Delta, Denton, Ellis and 22 more86 min
Jun 1, 5:20 PM CDTTornado WatchSPCBell, Collin, Cooke, Dallas, Delta, Denton and 22 more5 hr
Jun 1, 6:59 PM CDTMesoscale DiscussionSPCAngelina, Austin, Bastrop, Brazos, Burleson, Caldwell and 25 more91 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.