Alert archive / Texas / Mesoscale Discussions in 2004
Mesoscale Discussion 1982
The Storm Prediction Center issued this mesoscale discussion at Aug 12, 2004, 6:21 PM CDT for 41 counties in Oklahoma; 65 counties in Texas. It was in force for 114 min.
The area
The outline as issued.
The facts
- Issued
- Aug 12, 2004, 6:21 PM CDT (23:21 UTC)
- Expired
- Aug 12, 2004, 8:15 PM CDT
- In force
- 114 min
- Issued by
- the Storm Prediction Center
All 106 counties
Beckham County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Carter County, OK, Cleveland County, OK, Comanche County, OK, Cotton County, OK, Creek County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Garfield County, OK, Garvin County, OK, Grady County, OK, Greer County, OK, Harmon County, OK, Jackson County, OK, Jefferson County, OK, Johnston County, OK, Kingfisher County, OK, Kiowa County, OK, Lincoln County, OK, Logan County, OK, Love County, OK, Major County, OK, Marshall County, OK, McClain County, OK, Murray County, OK, Noble County, OK, Oklahoma County, OK, Osage County, OK, Pawnee County, OK, Payne County, OK, Pontotoc County, OK, Pottawatomie County, OK, Roger Mills County, OK, Seminole County, OK, Stephens County, OK, Tillman County, OK, Washita County, OK, Archer County, TX, Armstrong County, TX, Bailey County, TX, Baylor County, TX, Borden County, TX, Briscoe County, TX, Carson County, TX, Castro County, TX, Childress County, TX, Clay County, TX, Cochran County, TX, Collingsworth County, TX, Cooke County, TX, Cottle County, TX, Crosby County, TX, Dawson County, TX, Deaf Smith County, TX, Denton County, TX, Dickens County, TX, Donley County, TX, Fisher County, TX, Floyd County, TX, Foard County, TX, Garza County, TX, Gray County, TX, Grayson County, TX, Hale County, TX, Hall County, TX, Hardeman County, TX, Hartley County, TX, Haskell County, TX, Hemphill County, TX, Hockley County, TX, Hutchinson County, TX, Jack County, TX, Jones County, TX, Kent County, TX, King County, TX, Knox County, TX, Lamb County, TX, Lubbock County, TX, Lynn County, TX, Montague County, TX, Moore County, TX, Motley County, TX, Oldham County, TX, Palo Pinto County, TX, Parker County, TX, Parmer County, TX, Potter County, TX, Randall County, TX, Roberts County, TX, Scurry County, TX, Shackelford County, TX, Stephens County, TX, Stonewall County, TX, Swisher County, TX, Terry County, TX, Throckmorton County, TX, Wheeler County, TX, Wichita County, TX, Wilbarger County, TX, Wise County, TX, Yoakum County, TX, Young County, TX
The radar
The Altus AFB radar (KFDR), 93 km from the middle of the area, began a volume at 23:21 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 nearest sounding before it
Fort Sill, OK (KFSI), launched 12:00Z, 11.4 hours before the alert went out and 155 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.
- Mixed-layer CAPE
- 460 J/kg
- Mixed-layer CIN
- -312 J/kg
- Mixed-layer LCL
- 133 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- 88 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 12, 1:16 PM CDT | Mesoscale Discussion | SPC | Alfalfa, Beaver, Beckham, Blaine, Caddo, Canadian and 23 more | 119 min |
| Aug 12, 3:55 PM CDT | Severe Thunderstorm Watch | SPC | Beckham, Blaine, Caddo, Canadian, Carter, Cleveland and 35 more | 5 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; radar from the NEXRAD Level II archive.