Alert archive / Texas / Mesoscale Discussions in 2004

Mesoscale Discussion 453

April 23, 2004Carter County, Jefferson County, Oklahoma; 36 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Apr 23, 2004, 4:40 PM CDT for Carter County, Jefferson County, Oklahoma; 36 counties in Texas. It was in force for 65 min.

The area

The outline as issued.

The facts

Issued
Apr 23, 2004, 4:40 PM CDT (21:40 UTC)
Expired
Apr 23, 2004, 5:45 PM CDT
In force
65 min
Issued by
the Storm Prediction Center
All 38 counties

Carter County, OK, Jefferson County, OK, Archer County, TX, Baylor County, TX, Brown County, TX, Callahan County, TX, Clay County, TX, Coke County, TX, Coleman County, TX, Comanche County, TX, Concho County, TX, Eastland County, TX, Erath County, TX, Fisher County, TX, Haskell County, TX, Irion County, TX, Jack County, TX, Jones County, TX, King County, TX, Knox County, TX, McCulloch County, TX, Mills County, TX, Mitchell County, TX, Montague County, TX, Nolan County, TX, Palo Pinto County, TX, Runnels County, TX, San Saba County, TX, Shackelford County, TX, Stephens County, TX, Sterling County, TX, Stonewall County, TX, Taylor County, TX, Throckmorton County, TX, Tom Green County, TX, Wichita County, TX, Wise County, TX, Young 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, 9.7 hours before the alert went out and 216 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 2004-04-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 316 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 2004-04-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 92 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
316 J/kg
Mixed-layer CIN
-273 J/kg
Mixed-layer LCL
1706 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
92 m²/s²
0-3 km storm-relative helicity
194 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.5

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
Apr 22, 7:10 PM CDTMesoscale DiscussionSPCCherokee, Craig, Delaware, Hughes, LeFlore, McCurtain and 10 more35 min
Apr 22, 7:50 PM CDTTornado WatchSPCAdair, Cherokee, Delaware, Haskell, McIntosh, Muskogee and 2 more4 hr
Apr 22, 8:00 PM CDTMesoscale DiscussionSPCLove60 min
Apr 22, 9:50 PM CDTSevere Thunderstorm WatchSPCAdair, Cherokee, Delaware, Haskell, Latimer, LeFlore and 5 more6 hr
Apr 22, 11:47 PM CDTMesoscale DiscussionSPCBeaver, Custer, Dewey, Ellis, Harper, Major and 3 more58 min
Apr 23, 12:54 AM CDTMesoscale DiscussionSPCAdair, Cherokee, Delaware, Haskell, Latimer, LeFlore and 5 more96 min
Apr 23, 10:10 AM CDTMesoscale DiscussionSPCBeaver, Beckham, Blaine, Custer, Dewey, Ellis and 11 more3 hr
Apr 23, 10:37 AM CDTMesoscale DiscussionSPCOttawa113 min
Apr 23, 12:15 PM CDTTornado WatchSPCCarter, Cotton, Jefferson, Tillman6 hr
Apr 23, 1:46 PM CDTMesoscale DiscussionSPCAdair, Caddo, Canadian, Carter, Cherokee, Cleveland and 29 more119 min
Apr 23, 2:10 PM CDTSevere Thunderstorm WatchSPCAdair, Blaine, Caddo, Canadian, Cherokee, Cleveland and 30 more6 hr
Apr 23, 3:05 PM CDTMesoscale DiscussionSPCCotton, Garvin, Murray, Pontotoc, Stephens85 min
Apr 23, 3:05 PM CDTSevere Thunderstorm WatchSPCAlfalfa, Craig, Garfield, Grant, Kay, Major and 5 more5 hr
Apr 23, 5:30 PM CDTSevere Thunderstorm WatchSPCCarter, Cotton, Jefferson, Johnston, Love, Marshall and 3 more7 hr
Apr 23, 6:01 PM CDTMesoscale DiscussionSPCCreek, Haskell, Latimer, LeFlore, Lincoln, Nowata and 9 more59 min
Apr 22, 9:06 PM CDTMesoscale DiscussionSPCMontague24 min
Apr 23, 2:41 PM CDTMesoscale DiscussionSPCBaylor, Callahan, Coke, Coleman, Concho, Fisher and 18 more2 hr

Nearby

Mesoscale Discussions in Texas, 2004Mesoscale Discussions in Oklahoma, 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.