Alert archive / Texas / Mesoscale Discussions in 2005
Mesoscale Discussion 610
The Storm Prediction Center issued this mesoscale discussion at Apr 20, 2005, 3:28 PM CDT for 12 counties in Oklahoma; 29 counties in Texas. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 20, 2005, 3:28 PM CDT (20:28 UTC)
- Expired
- Apr 20, 2005, 5:30 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 41 counties
Beckham County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Greer County, OK, Harmon County, OK, Jackson County, OK, Kiowa County, OK, Roger Mills County, OK, Tillman County, OK, Washita County, OK, Woodward County, OK, Baylor County, TX, Briscoe County, TX, Childress County, TX, Collingsworth County, TX, Cottle County, TX, Crosby County, TX, Dickens County, TX, Donley County, TX, Fisher County, TX, Floyd County, TX, Foard County, TX, Gray County, TX, Hall County, TX, Hardeman County, TX, Haskell County, TX, Hemphill County, TX, Jones County, TX, Kent County, TX, King County, TX, Knox County, TX, Lipscomb County, TX, Motley County, TX, Scurry County, TX, Shackelford County, TX, Stonewall County, TX, Throckmorton County, TX, Wheeler County, TX, Wilbarger County, TX, Young County, TX
The radar
The Altus AFB radar (KFDR), 68 km from the middle of the area, began a volume at 20:34 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, 8.5 hours before the alert went out and 201 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
- 42 J/kg
- Mixed-layer CIN
- -441 J/kg
- Mixed-layer LCL
- 2031 m above ground
- 0-6 km bulk shear
- 7 kt
- 0-1 km storm-relative helicity
- -40 m²/s²
- 0-3 km storm-relative helicity
- -53 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 |
|---|---|---|---|---|
| Apr 19, 7:40 PM CDT | Mesoscale Discussion | SPC | Harmon, Jackson, Tillman | 65 min |
| Apr 20, 3:50 PM CDT | Severe Thunderstorm Watch | SPC | Alfalfa, Beaver, Beckham, Blaine, Custer, Dewey and 12 more | 7 hr |
| Apr 20, 6:57 PM CDT | Mesoscale Discussion | SPC | Alfalfa, Beckham, Custer, Dewey, Ellis, Greer and 9 more | 93 min |
| Apr 19, 7:50 PM CDT | Mesoscale Discussion | SPC | Dimmit, Edwards, Kinney, La Salle, Maverick, Real and 4 more | 55 min |
Nearby
Mesoscale Discussions in Texas, 2005Mesoscale Discussions in Oklahoma, 2005Every mesoscale discussion in 2005
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.