Alert archive / Texas / Mesoscale Discussions in 2007
Mesoscale Discussion 513
The Storm Prediction Center issued this mesoscale discussion at Apr 17, 2007, 2:59 PM CDT for Jackson County, Tillman County, Oklahoma; 62 counties in Texas. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 17, 2007, 2:59 PM CDT (19:59 UTC)
- Expired
- Apr 17, 2007, 5:00 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 64 counties
Jackson County, OK, Tillman County, OK, Archer County, TX, Baylor County, TX, Borden County, TX, Bosque County, TX, Brown County, TX, Callahan County, TX, Childress County, TX, Clay County, TX, Coke County, TX, Coleman County, TX, Comanche County, TX, Concho County, TX, Cottle County, TX, Crosby County, TX, Dawson County, TX, Dickens County, TX, Eastland County, TX, Erath County, TX, Fisher County, TX, Floyd County, TX, Foard County, TX, Garza County, TX, Glasscock County, TX, Hale County, TX, Hall County, TX, Hamilton County, TX, Hardeman County, TX, Haskell County, TX, Hood County, TX, Howard County, TX, Irion County, TX, Jack County, TX, Jones County, TX, Kent County, TX, King County, TX, Knox County, TX, Lampasas County, TX, Lubbock County, TX, Lynn County, TX, McCulloch County, TX, Mills County, TX, Mitchell County, TX, Montague County, TX, Motley County, TX, Nolan County, TX, Palo Pinto County, TX, Parker County, TX, Runnels County, TX, San Saba County, TX, Scurry County, TX, Shackelford County, TX, Somervell County, TX, Stephens County, TX, Sterling County, TX, Stonewall County, TX, Taylor County, TX, Throckmorton County, TX, Tom Green County, TX, Wichita County, TX, Wilbarger County, TX, Wise County, TX, Young County, TX
The radar
The Dyess AFB radar (KDYX), 102 km from the middle of the area, began a volume at 19:59 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
Midland Regional, TX (KMAF), launched 12:00Z, 8.0 hours before the alert went out and 202 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
- 169 J/kg
- Mixed-layer CIN
- -183 J/kg
- Mixed-layer LCL
- 683 m above ground
- 0-6 km bulk shear
- 79 kt
- 0-1 km storm-relative helicity
- -67 m²/s²
- 0-3 km storm-relative helicity
- -86 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 17, 12:47 PM CDT | Mesoscale Discussion | SPC | Archer, Baylor, Borden, Bosque, Brown, Callahan and 43 more | 118 min |
| Apr 17, 1:37 PM CDT | Severe Thunderstorm Watch | SPC | Archer, Baylor, Borden, Brown, Callahan, Coke and 33 more | 6 hr |
| Apr 17, 5:22 PM CDT | Mesoscale Discussion | SPC | Bell, Bosque, Burnet, Coryell, Dallas, Denton and 14 more | 83 min |
Nearby
Mesoscale Discussions in Texas, 2007Mesoscale Discussions in Oklahoma, 2007Every mesoscale discussion in 2007
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.