Alert archive / Texas / Mesoscale Discussions in 2017
Mesoscale Discussion 512
The Storm Prediction Center issued this mesoscale discussion at Apr 16, 2017, 9:33 PM CDT for 13 counties in Oklahoma; 32 counties in Texas. It was in force for 57 min.
The area
The outline as issued.
The facts
- Issued
- Apr 16, 2017, 9:33 PM CDT (02:33 UTC)
- Expired
- Apr 16, 2017, 10:30 PM CDT
- In force
- 57 min
- Issued by
- the Storm Prediction Center
All 45 counties
Beckham County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Greer County, OK, Harmon County, OK, Jackson County, OK, Kiowa County, OK, Major County, OK, Roger Mills County, OK, Tillman County, OK, Washita County, OK, Woodward County, OK, Armstrong County, TX, Briscoe County, TX, Childress County, TX, Collingsworth County, TX, Cottle County, TX, Crosby County, TX, Dickens County, TX, Donley County, TX, Floyd County, TX, Foard County, TX, Garza County, TX, Gray County, TX, Hale County, TX, Hall County, TX, Hardeman County, TX, Hemphill County, TX, Hockley County, TX, Kent County, TX, King County, TX, Knox County, TX, Lipscomb County, TX, Lubbock County, TX, Lynn County, TX, Motley County, TX, Ochiltree County, TX, Roberts County, TX, Stonewall County, TX, Swisher County, TX, Terry County, TX, Wheeler County, TX, Wilbarger County, TX, Yoakum County, TX
The radar
The Altus AFB radar (KFDR), 123 km from the middle of the area, began a volume at 02:37 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
Amarillo Airport, TX (KAMA), launched 00:00Z, 2.6 hours before the alert went out and 144 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
- 908 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 2134 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 139 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.3
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 |
|---|---|---|---|---|
| Apr 16, 7:01 PM CDT | Mesoscale Discussion | SPC | Beckham, Blaine, Caddo, Comanche, Cotton, Custer and 11 more | 59 min |
| Apr 16, 8:54 PM CDT | Mesoscale Discussion | SPC | Craig, Delaware, Kay, Mayes, Noble, Nowata and 7 more | 96 min |
| Apr 16, 9:06 PM CDT | Mesoscale Discussion | SPC | Coke, Crockett, Dimmit, Edwards, Glasscock, Irion and 9 more | 2 hr |
| Apr 17, 2:40 AM CDT | Mesoscale Discussion | SPC | Brooks, Duval, Jim Hogg, Jim Wells, Kenedy, Kleberg and 3 more | 3 hr |
| Apr 17, 4:50 PM CDT | Mesoscale Discussion | SPC | Brooks, Duval, Jim Hogg, Jim Wells, Kenedy, Kleberg and 4 more | 115 min |
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.