Alert archive / Texas / Mesoscale Discussions in 2017
Mesoscale Discussion 193
The Storm Prediction Center issued this mesoscale discussion at Feb 19, 2017, 8:33 PM CST for 17 counties in Oklahoma; 21 counties in Texas. It was in force for 117 min.
The area
The outline as issued.
The facts
- Issued
- Feb 19, 2017, 8:33 PM CST (02:33 UTC)
- Expired
- Feb 19, 2017, 10:30 PM CST
- In force
- 117 min
- Issued by
- the Storm Prediction Center
All 38 counties
Carter County, OK, Cleveland County, OK, Garvin County, OK, Jefferson County, OK, Johnston County, OK, Lincoln County, OK, Logan County, OK, Love County, OK, Marshall County, OK, McClain County, OK, Murray County, OK, Oklahoma County, OK, Payne County, OK, Pontotoc County, OK, Pottawatomie County, OK, Seminole County, OK, Stephens County, OK, Bosque County, TX, Comanche County, TX, Cooke County, TX, Coryell County, TX, Denton County, TX, Erath County, TX, Grayson County, TX, Hamilton County, TX, Hood County, TX, Jack County, TX, Johnson County, TX, Lampasas County, TX, Llano County, TX, Mills County, TX, Montague County, TX, Palo Pinto County, TX, Parker County, TX, San Saba County, TX, Somervell County, TX, Tarrant County, TX, Wise County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 90 km from the middle of the area, began a volume at 02:34 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 nearest sounding before it
Fort Worth, TX (KFWD), launched 00:00Z, 2.6 hours before the alert went out and 69 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, 6:43 PM CST | Mesoscale Discussion | SPC | Carter, Cotton, Jefferson, Stephens, Tillman | 2 hr |
| 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.