Alert archive / Texas / Mesoscale Discussions in 2004

Mesoscale Discussion 1553

July 7, 200413 counties in Oklahoma; 46 counties in Texas

The Storm Prediction Center issued this mesoscale discussion at Jul 7, 2004, 1:55 AM CDT for 13 counties in Oklahoma; 46 counties in Texas. It was in force for 95 min.

The area

The outline as issued.

The facts

Issued
Jul 7, 2004, 1:55 AM CDT (06:55 UTC)
Expired
Jul 7, 2004, 3:30 AM CDT
In force
95 min
Issued by
the Storm Prediction Center
All 59 counties

Carter County, OK, Comanche County, OK, Cotton County, OK, Garvin County, OK, Harmon County, OK, Jackson County, OK, Jefferson County, OK, Johnston County, OK, Love County, OK, Murray County, OK, Pontotoc County, OK, Stephens County, OK, Tillman County, OK, Archer County, TX, Baylor County, TX, Briscoe County, TX, Callahan County, TX, Childress County, TX, Clay County, TX, Coke County, TX, Coleman County, TX, Cooke County, TX, Cottle County, TX, Crosby County, TX, Dickens County, TX, Eastland County, TX, Fisher County, TX, Floyd County, TX, Foard County, TX, Garza County, TX, Glasscock County, TX, Hale County, TX, Hall County, TX, Hardeman County, TX, Haskell County, TX, Howard County, TX, Jack County, TX, Jones County, TX, Kent County, TX, King County, TX, Knox County, TX, Mitchell County, TX, Montague County, TX, Motley County, TX, Nolan County, TX, Palo Pinto County, TX, Runnels County, TX, Scurry County, TX, Shackelford County, TX, Stephens County, TX, Sterling County, TX, Stonewall County, TX, Swisher County, TX, Taylor County, TX, Throckmorton County, TX, Wichita County, TX, Wilbarger County, TX, Wise County, TX, Young County, TX

The nearest sounding before it

Midland Regional, TX (KMAF), launched 00:00Z, 6.9 hours before the alert went out and 243 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 00:00Z on 2004-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2121 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 00:00Z on 2004-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -8 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
2121 J/kg
Mixed-layer CIN
-20 J/kg
Mixed-layer LCL
2453 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
-8 m²/s²
0-3 km storm-relative helicity
89 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.2

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
Jul 6, 11:48 PM CDTMesoscale DiscussionSPCCaddo, Comanche, Cotton, Grady, Greer, Harmon and 6 more87 min
Jul 7, 12:35 AM CDTSevere Thunderstorm WatchSPCCarter, Coal, Comanche, Cotton, Garvin, Jackson and 8 more5 hr
Jul 7, 3:10 AM CDTMesoscale DiscussionSPCAdair, Cleveland, Coal, Creek, Haskell, Hughes and 12 more3 hr
Jul 6, 8:02 PM CDTMesoscale DiscussionSPCAndrews, Armstrong, Bailey, Borden, Briscoe, Castro and 31 more88 min
Jul 6, 9:45 PM CDTSevere Thunderstorm WatchSPCBailey, Briscoe, Castro, Childress, Cochran, Cottle and 18 more6 hr
Jul 7, 2:31 PM CDTMesoscale DiscussionSPCAnderson, Bell, Bosque, Brazos, Burleson, Burnet and 34 more119 min

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.