Alert archive / Texas / Mesoscale Discussions in 2003

Mesoscale Discussion 1344

June 11, 200326 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jun 11, 2003, 11:49 PM CDT for 26 counties in Texas. It was in force for 86 min.

The area

The outline as issued.

The facts

Issued
Jun 11, 2003, 11:49 PM CDT (04:49 UTC)
Expired
Jun 12, 2003, 1:15 AM CDT
In force
86 min
Issued by
the Storm Prediction Center
All 26 counties

Bell County, TX, Bosque County, TX, Collin County, TX, Coryell County, TX, Dallas County, TX, Denton County, TX, Ellis County, TX, Falls County, TX, Grayson County, TX, Hamilton County, TX, Henderson County, TX, Hill County, TX, Hood County, TX, Hunt County, TX, Johnson County, TX, Kaufman County, TX, Lampasas County, TX, Limestone County, TX, McLennan County, TX, Milam County, TX, Navarro County, TX, Rains County, TX, Rockwall County, TX, Somervell County, TX, Tarrant County, TX, Van Zandt County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 47 km from the middle of the area, began a volume at 04:52 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

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, 4.8 hours before the alert went out and 69 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 2003-06-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4924 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 2003-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 square meters per square second.19395878Sfc1 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
4924 J/kg
Mixed-layer CIN
-37 J/kg
Mixed-layer LCL
1353 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
121 m²/s²
Significant tornado parameter
0.8
Supercell composite
7.0

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
Jun 11, 7:13 PM CDTMesoscale DiscussionSPCBorden, Callahan, Coke, Coleman, Concho, Crockett and 29 more62 min
Jun 11, 8:04 PM CDTMesoscale DiscussionSPCBell, Blanco, Bosque, Brown, Burnet, Caldwell and 27 more86 min
Jun 11, 8:15 PM CDTTornado WatchSPCArcher, Baylor, Brown, Callahan, Clay, Coleman and 29 more6 hr
Jun 11, 9:15 PM CDTSevere Thunderstorm WatchSPCBell, Bosque, Collin, Coryell, Dallas, Denton and 19 more5 hr
Jun 11, 11:10 PM CDTMesoscale DiscussionSPCArcher, Baylor, Brown, Callahan, Clay, Coleman and 29 more65 min
Jun 12, 12:14 AM CDTMesoscale DiscussionSPCBowie, Camp, Cass, Franklin, Marion, Morris and 3 more2 hr
Jun 12, 12:30 AM CDTMesoscale DiscussionSPCAnderson, Angelina, Austin, Brazos, Burleson, Camp and 34 more2 hr
Jun 12, 1:10 AM CDTSevere Thunderstorm WatchSPCAnderson, Angelina, Austin, Bowie, Brazoria, Brazos and 39 more4 hr
Jun 12, 1:30 AM CDTMesoscale DiscussionSPCArcher, Baylor, Clay, Cooke, Denton, Foard and 16 more2 hr
Jun 12, 4:20 AM CDTMesoscale DiscussionSPCAngelina, Austin, Brazoria, Cass, Colorado, Fort Bend and 21 more55 min
Jun 12, 1:31 PM CDTMesoscale DiscussionSPCBrazos, Burleson, Grimes, Jasper, Montgomery, Newton and 5 more119 min
Jun 12, 1:56 PM CDTMesoscale DiscussionSPCBrown, Callahan, Coleman, Comanche, Concho, Eastland and 11 more2 hr
Jun 12, 3:30 PM CDTSevere Thunderstorm WatchSPCArcher, Baylor, Bosque, Brown, Callahan, Childress and 29 more6 hr
Jun 12, 5:59 PM CDTMesoscale DiscussionSPCArmstrong, Carson, Dallam, Deaf Smith, Donley, Gray and 11 more91 min

Nearby

Mesoscale Discussions in Texas, 2003Every 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; radar from the NEXRAD Level II archive.