Alert archive / Texas / Mesoscale Discussions in 2015
Mesoscale Discussion 2009
The Storm Prediction Center issued this mesoscale discussion at Dec 12, 2015, 9:14 PM CST for 10 counties in Oklahoma; 38 counties in Texas. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Dec 12, 2015, 9:14 PM CST (03:14 UTC)
- Expired
- Dec 12, 2015, 11:15 PM CST
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 48 counties
Beckham County, OK, Comanche County, OK, Custer County, OK, Greer County, OK, Harmon County, OK, Jackson County, OK, Kiowa County, OK, Roger Mills County, OK, Tillman County, OK, Washita County, OK, Archer County, TX, Baylor County, TX, Brown County, TX, Callahan County, TX, Childress County, TX, Coleman County, TX, Collingsworth County, TX, Comanche County, TX, Concho County, TX, Cottle County, TX, Donley County, TX, Eastland County, TX, Foard County, TX, Gray County, TX, Hall County, TX, Hardeman County, TX, Haskell County, TX, Jones County, TX, Kimble County, TX, King County, TX, Knox County, TX, Mason County, TX, McCulloch County, TX, Menard County, TX, Mills County, TX, Runnels County, TX, San Saba County, TX, Schleicher County, TX, Shackelford County, TX, Stephens County, TX, Stonewall County, TX, Sutton County, TX, Taylor County, TX, Throckmorton County, TX, Wheeler County, TX, Wichita County, TX, Wilbarger County, TX, Young County, TX
The radar
The Dyess AFB radar (KDYX), 66 km from the middle of the area, began a volume at 03:17 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 Worth, TX (KFWD), launched 00:00Z, 3.2 hours before the alert went out and 225 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
- 374 J/kg
- Mixed-layer CIN
- -26 J/kg
- Mixed-layer LCL
- 699 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 296 m²/s²
- 0-3 km storm-relative helicity
- 305 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.4
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 |
|---|---|---|---|---|
| Dec 12, 6:09 PM CST | Mesoscale Discussion | SPC | Choctaw, Haskell, Latimer, LeFlore, McCurtain, McIntosh and 5 more | 96 min |
| Dec 12, 11:40 PM CST | Mesoscale Discussion | SPC | Comanche, Cotton, Jackson, Kiowa, Tillman | 35 min |
| Dec 13, 9:18 AM CST | Mesoscale Discussion | SPC | Beaver, Cimarron, Texas | 6 hr |
| Dec 13, 7:17 AM CST | Mesoscale Discussion | SPC | Chambers, Galveston | 88 min |
Nearby
Mesoscale Discussions in Texas, 2015Mesoscale Discussions in Oklahoma, 2015Every mesoscale discussion in 2015
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.