Alert archive / Texas / Mesoscale Discussions in 2003

Mesoscale Discussion 1004

May 15, 200323 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at May 15, 2003, 5:49 PM CDT for 23 counties in Texas. It was in force for 116 min.

The area

The outline as issued.

The facts

Issued
May 15, 2003, 5:49 PM CDT (22:49 UTC)
Expired
May 15, 2003, 7:45 PM CDT
In force
116 min
Issued by
the Storm Prediction Center
All 23 counties

Baylor County, TX, Coke County, TX, Cottle County, TX, Fisher County, TX, Foard County, TX, Hardeman County, TX, Haskell County, TX, Irion County, TX, Jones County, TX, Kent County, TX, King County, TX, Knox County, TX, Mitchell County, TX, Nolan County, TX, Reagan County, TX, Runnels County, TX, Scurry County, TX, Sterling County, TX, Stonewall County, TX, Taylor County, TX, Throckmorton County, TX, Tom Green County, TX, Wilbarger 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

Midland Regional, TX (KMAF), launched 12:00Z, 10.8 hours before the alert went out and 178 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, Midland Regional, TX at 12:00Z on 2003-05-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1371 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, Midland Regional, TX at 12:00Z on 2003-05-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 238 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
1371 J/kg
Mixed-layer CIN
-267 J/kg
Mixed-layer LCL
1738 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
238 m²/s²
0-3 km storm-relative helicity
275 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.6

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.

IssuedProductOfficeCountiesLasted
May 14, 7:36 PM CDTMesoscale DiscussionSPCBowie, Red River114 min
May 14, 9:20 PM CDTMesoscale DiscussionSPCCass, Harrison, Marion115 min
May 14, 11:20 PM CDTMesoscale DiscussionSPCBell, Bosque, Coryell, Ellis, Falls, Freestone and 5 more115 min
May 14, 11:35 PM CDTSevere Thunderstorm WatchSPCCamp, Cass, Cherokee, Franklin, Gregg, Harrison and 8 more5 hr
May 14, 11:45 PM CDTSevere Thunderstorm WatchSPCAnderson, Bosque, Collin, Dallas, Delta, Denton and 16 more5 hr
May 15, 2:10 AM CDTMesoscale DiscussionSPCAnderson, Collin, Dallas, Denton, Ellis, Henderson and 13 more2 hr
May 15, 2:27 AM CDTMesoscale DiscussionSPCGregg, Harrison, Marion, Panola, Rusk, Shelby2 hr
May 15, 1:31 PM CDTMesoscale DiscussionSPCArmstrong, Briscoe, Carson, Castro, Dallam, Deaf Smith and 10 more119 min
May 15, 1:55 PM CDTTornado WatchSPCArmstrong, Carson, Collingsworth, Dallam, Deaf Smith, Donley and 13 more6 hr
May 15, 3:41 PM CDTMesoscale DiscussionSPCArmstrong, Baylor, Briscoe, Carson, Castro, Childress and 30 more94 min
May 15, 4:05 PM CDTTornado WatchSPCBorden, Briscoe, Castro, Childress, Cottle, Crosby and 20 more6 hr
May 15, 5:15 PM CDTMesoscale DiscussionSPCFrio, Kinney, Maverick, Uvalde, Zavala2 hr
May 15, 6:25 PM CDTTornado WatchSPCArcher, Baylor, Borden, Briscoe, Brown, Callahan and 45 more6 hr
May 15, 6:47 PM CDTMesoscale DiscussionSPCChildress, Collingsworth, Donley, Gray, Hall, Hansford and 6 more58 min
May 15, 6:50 PM CDTTornado WatchSPCArmstrong, Carson, Collingsworth, Dallam, Donley, Gray and 12 more5 hr

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.