Alert archive / Texas / Mesoscale Discussions in 2015
Mesoscale Discussion 2010
The Storm Prediction Center issued this mesoscale discussion at Dec 12, 2015, 11:40 PM CST for 5 counties in Oklahoma; 33 counties in Texas. It was in force for 35 min.
The area
The outline as issued.
The facts
- Issued
- Dec 12, 2015, 11:40 PM CST (05:40 UTC)
- Expired
- Dec 13, 2015, 12:15 AM CST
- In force
- 35 min
- Issued by
- the Storm Prediction Center
All 38 counties
Comanche County, OK, Cotton County, OK, Jackson County, OK, Kiowa County, OK, Tillman County, OK, Archer County, TX, Bandera County, TX, Bexar County, TX, Blanco County, TX, Bosque County, TX, Burnet County, TX, Clay County, TX, Comal County, TX, Comanche County, TX, Coryell County, TX, Erath County, TX, Frio County, TX, Gillespie County, TX, Hamilton County, TX, Hood County, TX, Jack County, TX, Kendall County, TX, Kerr County, TX, Lampasas County, TX, Llano County, TX, Mason County, TX, Medina County, TX, Mills County, TX, Montague County, TX, Palo Pinto County, TX, Parker County, TX, Real County, TX, San Saba County, TX, Somervell County, TX, Uvalde County, TX, Wichita County, TX, Young County, TX, Zavala County, TX
The radar
The Dyess AFB radar (KDYX), 84 km from the middle of the area, began a volume at 05:42 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, 5.7 hours before the alert went out and 190 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, 9:14 PM CST | Mesoscale Discussion | SPC | Beckham, Comanche, Custer, Greer, Harmon, Jackson and 4 more | 2 hr |
| 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.