Alert archive / Oklahoma / Mesoscale Discussions in 2015
Mesoscale Discussion 283
The Storm Prediction Center issued this mesoscale discussion at Apr 12, 2015, 5:03 PM CDT for 8 counties in Kansas; 23 counties in Oklahoma; 6 counties in Texas. It was in force for 57 min.
The area
The outline as issued.
The facts
- Issued
- Apr 12, 2015, 5:03 PM CDT (22:03 UTC)
- Expired
- Apr 12, 2015, 6:00 PM CDT
- In force
- 57 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 95%
All 37 counties
Barber County, KS, Comanche County, KS, Harper County, KS, Kingman County, KS, Kiowa County, KS, Pratt County, KS, Reno County, KS, Sumner County, KS, Alfalfa County, OK, Beckham County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Comanche County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Garfield County, OK, Grant County, OK, Greer County, OK, Harmon County, OK, Harper County, OK, Jackson County, OK, Kingfisher County, OK, Kiowa County, OK, Major County, OK, Roger Mills County, OK, Tillman County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Childress County, TX, Collingsworth County, TX, Hardeman County, TX, Hemphill County, TX, Lipscomb County, TX, Wheeler 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
Dodge City, (KDDC), launched 12:00Z, 10.1 hours before the alert went out and 206 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
- 905 J/kg
- Mixed-layer CIN
- -36 J/kg
- Mixed-layer LCL
- 488 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 365 m²/s²
- 0-3 km storm-relative helicity
- 363 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 8.4
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 |
|---|---|---|---|---|
| Apr 11, 8:19 PM CDT | Mesoscale Discussion | SPC | Barber, Clark, Comanche, Edwards, Ford, Grant and 7 more | 56 min |
| Apr 12, 5:17 PM CDT | Severe Thunderstorm Watch | SPC | Barber, Barton, Butler, Clark, Comanche, Cowley and 13 more | 7 hr |
| Apr 12, 5:42 PM CDT | Mesoscale Discussion | SPC | Clay, Cloud, Ellis, Ellsworth, Jewell, Lincoln and 11 more | 63 min |
| Apr 12, 5:05 PM CDT | Mesoscale Discussion | SPC | Andrews, Borden, Crane, Crockett, Dawson, Ector and 15 more | 115 min |
| Apr 12, 5:39 PM CDT | Mesoscale Discussion | SPC | Atascosa, Bandera, Bee, Bexar, Brooks, Dimmit and 20 more | 2 hr |
| Apr 12, 5:59 PM CDT | Severe Thunderstorm Watch | SPC | Atascosa, Bandera, Brooks, Cameron, Crockett, Dimmit and 28 more | 7 hr |
Nearby
Mesoscale Discussions in Oklahoma, 2015Mesoscale Discussions in Kansas, 2015Mesoscale Discussions in Texas, 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.