Alert archive / Texas / Mesoscale Discussions in 2004
Mesoscale Discussion 1459
The Storm Prediction Center issued this mesoscale discussion at Jul 1, 2004, 3:14 PM CDT for 8 counties in Oklahoma; 28 counties in Texas. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 1, 2004, 3:14 PM CDT (20:14 UTC)
- Expired
- Jul 1, 2004, 5:45 PM CDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
All 36 counties
Beckham County, OK, Comanche County, OK, Cotton County, OK, Greer County, OK, Harmon County, OK, Jackson County, OK, Kiowa County, OK, Tillman County, OK, Archer County, TX, Armstrong County, TX, Baylor County, TX, Briscoe County, TX, Childress County, TX, Clay County, TX, Collingsworth County, TX, Cottle County, TX, Crosby County, TX, Dickens County, TX, Donley County, TX, Floyd County, TX, Foard County, TX, Garza County, TX, Gray County, TX, Hall County, TX, Hardeman County, TX, Haskell County, TX, Kent County, TX, King County, TX, Knox County, TX, Motley County, TX, Stonewall County, TX, Swisher County, TX, Throckmorton County, TX, Wheeler County, TX, Wichita County, TX, Wilbarger County, TX
The radar
The Altus AFB radar (KFDR), 88 km from the middle of the area, began a volume at 20:15 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
Amarillo Airport, TX (KAMA), launched 12:00Z, 8.2 hours before the alert went out and 191 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
- 177 J/kg
- Mixed-layer CIN
- -318 J/kg
- Mixed-layer LCL
- 2377 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 26 m²/s²
- 0-3 km storm-relative helicity
- 147 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
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 |
|---|---|---|---|---|
| Jul 1, 3:45 PM CDT | Severe Thunderstorm Watch | SPC | Beckham, Custer, Dewey, Ellis, Greer, Harmon and 7 more | 5 hr |
| Jul 1, 5:56 PM CDT | Mesoscale Discussion | SPC | Beckham, Custer, Dewey, Ellis, Greer, Harmon and 7 more | 2 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.