Alert archive / Texas / Mesoscale Discussions in 2017
Mesoscale Discussion 191
The Storm Prediction Center issued this mesoscale discussion at Feb 19, 2017, 6:43 PM CST for 5 counties in Oklahoma; 32 counties in Texas. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 19, 2017, 6:43 PM CST (00:43 UTC)
- Expired
- Feb 19, 2017, 8:45 PM CST
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 37 counties
Carter County, OK, Cotton County, OK, Jefferson County, OK, Stephens County, OK, Tillman County, OK, Archer County, TX, Baylor County, TX, Brown County, TX, Callahan County, TX, Clay County, TX, Coleman County, TX, Comanche County, TX, Concho County, TX, Eastland County, TX, Erath County, TX, Gillespie County, TX, Haskell County, TX, Jack County, TX, Jones County, TX, Kimble County, TX, Mason County, TX, McCulloch County, TX, Menard County, TX, Mills County, TX, Montague County, TX, Palo Pinto County, TX, Runnels County, TX, San Saba County, TX, Schleicher County, TX, Shackelford County, TX, Stephens County, TX, Sutton County, TX, Taylor County, TX, Throckmorton County, TX, Wichita County, TX, Wilbarger County, TX, Young County, TX
The radar
The Dyess AFB radar (KDYX), 64 km from the middle of the area, began a volume at 00:44 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, 0.7 hours before the alert went out and 184 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
- 758 J/kg
- Mixed-layer CIN
- -28 J/kg
- Mixed-layer LCL
- 896 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 209 m²/s²
- 0-3 km storm-relative helicity
- 274 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 10.5
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 19, 8:33 PM CST | Mesoscale Discussion | SPC | Carter, Cleveland, Garvin, Jefferson, Johnston, Lincoln and 11 more | 117 min |
| Feb 19, 6:18 PM CST | Severe Thunderstorm Watch | SPC | Atascosa, Bandera, Bastrop, Bexar, Caldwell, Comal and 20 more | 8 hr |
| Feb 19, 8:13 PM CST | Mesoscale Discussion | SPC | Bandera, Dimmit, Edwards, Kerr, Kinney, Maverick and 3 more | 2 hr |
| Feb 19, 8:36 PM CST | Severe Thunderstorm Watch | SPC | Brooks, Duval, Jim Hogg, Jim Wells, La Salle, Live Oak and 4 more | 4 hr |
| Feb 19, 10:28 PM CST | Mesoscale Discussion | SPC | Atascosa, Bexar, Comal, Kendall, McMullen, Wilson | 92 min |
| Feb 19, 11:50 PM CST | Mesoscale Discussion | SPC | Bastrop, Brazos, Burleson, Falls, Fayette, Grimes and 4 more | 85 min |
| Feb 20, 1:56 AM CST | Mesoscale Discussion | SPC | Brazos, Houston, Leon, Madison, Trinity, Walker | 3 hr |
| Feb 20, 4:32 AM CST | Mesoscale Discussion | SPC | Aransas, Calhoun, Cameron, Kenedy, Kleberg, Nueces and 1 more | 3 hr |
Nearby
Mesoscale Discussions in Texas, 2017Mesoscale Discussions in Oklahoma, 2017Every mesoscale discussion in 2017
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.