Alert archive / Oklahoma / Mesoscale Discussions in 2017
Mesoscale Discussion 1225
The Storm Prediction Center issued this mesoscale discussion at Jul 3, 2017, 7:26 PM CDT for 22 counties in Oklahoma; 16 counties in Texas. It was in force for 64 min.
The area
The outline as issued.
The facts
- Issued
- Jul 3, 2017, 7:26 PM CDT (00:26 UTC)
- Expired
- Jul 3, 2017, 8:30 PM CDT
- In force
- 64 min
- Issued by
- the Storm Prediction Center
All 38 counties
Beckham County, OK, Caddo County, OK, Canadian County, OK, Cleveland County, OK, Comanche County, OK, Custer County, OK, Grady County, OK, Greer County, OK, Harmon County, OK, Jackson County, OK, Kingfisher County, OK, Kiowa County, OK, Lincoln County, OK, Logan County, OK, McClain County, OK, Noble County, OK, Oklahoma County, OK, Pawnee County, OK, Payne County, OK, Pottawatomie County, OK, Tillman County, OK, Washita County, OK, Armstrong County, TX, Briscoe County, TX, Carson County, TX, Childress County, TX, Collingsworth County, TX, Cottle County, TX, Donley County, TX, Floyd County, TX, Foard County, TX, Gray County, TX, Hall County, TX, Hardeman County, TX, Motley County, TX, Roberts County, TX, Wheeler County, TX, Wilbarger County, TX
The watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 0.4 hours before the alert went out and 148 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
- 2711 J/kg
- Mixed-layer CIN
- -32 J/kg
- Mixed-layer LCL
- 1254 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 103 m²/s²
- 0-3 km storm-relative helicity
- 147 m²/s²
- Significant tornado parameter
- 1.7
- Supercell composite
- 17.0
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 |
|---|---|---|---|---|
| Jul 3, 8:23 PM CDT | Mesoscale Discussion | SPC | Atoka, Bryan, Carter, Cleveland, Coal, Creek and 20 more | 67 min |
| Jul 3, 8:39 PM CDT | Severe Thunderstorm Watch | SPC | Atoka, Bryan, Carter, Cherokee, Choctaw, Coal and 26 more | 6 hr |
| Jul 3, 10:30 PM CDT | Mesoscale Discussion | SPC | Atoka, Bryan, Carter, Cherokee, Coal, Haskell and 16 more | 60 min |
| Jul 4, 12:51 AM CDT | Mesoscale Discussion | SPC | Adair, Atoka, Bryan, Cherokee, Choctaw, Haskell and 5 more | 114 min |
| Jul 3, 10:50 PM CDT | Severe Thunderstorm Watch | SPC | Collin, Cooke, Dallas, Delta, Denton, Fannin and 12 more | 5 hr |
| Jul 4, 4:44 PM CDT | Mesoscale Discussion | SPC | Bailey, Castro, Deaf Smith, Oldham, Parmer | 2 hr |
| Jul 4, 6:51 PM CDT | Severe Thunderstorm Watch | SPC | Bailey, Briscoe, Castro, Cochran, Crosby, Dickens and 14 more | 6 hr |
Nearby
Mesoscale Discussions in Oklahoma, 2017Mesoscale Discussions in Texas, 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.