Alert archive / Oklahoma / Mesoscale Discussions in 2018
Mesoscale Discussion 830
The Storm Prediction Center issued this mesoscale discussion at Jun 22, 2018, 7:12 PM CDT for 26 counties in Kansas; 28 counties in Oklahoma; 9 counties in Texas. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 22, 2018, 7:12 PM CDT (00:12 UTC)
- Expired
- Jun 22, 2018, 9:15 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 63 counties
Barber County, KS, Barton County, KS, Butler County, KS, Chase County, KS, Clark County, KS, Comanche County, KS, Cowley County, KS, Edwards County, KS, Ellsworth County, KS, Ford County, KS, Harper County, KS, Harvey County, KS, Kingman County, KS, Kiowa County, KS, Marion County, KS, McPherson County, KS, Meade County, KS, Pawnee County, KS, Pratt County, KS, Reno County, KS, Rice County, KS, Russell County, KS, Saline County, KS, Sedgwick County, KS, Stafford County, KS, Sumner County, KS, Alfalfa County, OK, Beaver County, OK, Beckham County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Cleveland County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Garfield County, OK, Grady County, OK, Grant County, OK, Greer County, OK, Harper County, OK, Kay County, OK, Kingfisher County, OK, Kiowa County, OK, Logan County, OK, Major County, OK, McClain County, OK, Noble County, OK, Oklahoma County, OK, Payne County, OK, Roger Mills County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Carson County, TX, Collingsworth County, TX, Gray County, TX, Hemphill County, TX, Hutchinson County, TX, Lipscomb County, TX, Ochiltree County, TX, Roberts County, TX, Wheeler County, TX
The radar
The Vance AFB radar (KVNX), 103 km from the middle of the area, began a volume at 00:13 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 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 00:00Z, 0.2 hours before the alert went out and 128 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
- 394 J/kg
- Mixed-layer CIN
- -154 J/kg
- Mixed-layer LCL
- 1979 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 52 m²/s²
- 0-3 km storm-relative helicity
- 394 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 8.3
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 |
|---|---|---|---|---|
| Jun 22, 9:07 PM CDT | Mesoscale Discussion | SPC | Barber, Chautauqua, Comanche, Cowley, Elk, Harper and 3 more | 113 min |
| Jun 23, 2:36 PM CDT | Mesoscale Discussion | SPC | Finney, Grant, Greeley, Hamilton, Haskell, Kearny and 9 more | 114 min |
| Jun 23, 3:20 PM CDT | Severe Thunderstorm Watch | SPC | Finney, Grant, Gray, Greeley, Hamilton, Haskell and 11 more | 7 hr |
| Jun 23, 6:37 PM CDT | Mesoscale Discussion | SPC | Finney, Gove, Grant, Gray, Greeley, Hamilton and 13 more | 113 min |
| Jun 22, 9:27 PM CDT | Severe Thunderstorm Watch | SPC | Atoka, Bryan, Carter, Choctaw, Cleveland, Coal and 38 more | 6 hr |
| Jun 22, 11:09 PM CDT | Mesoscale Discussion | SPC | Atoka, Blaine, Bryan, Caddo, Canadian, Carter and 44 more | 2 hr |
| Jun 22, 11:48 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Cherokee, LeFlore, McCurtain, Mayes, Sequoyah | 7 hr |
| Jun 23, 1:01 AM CDT | Mesoscale Discussion | SPC | Atoka, Blaine, Bryan, Caddo, Canadian, Carter and 44 more | 59 min |
| Jun 23, 2:17 PM CDT | Mesoscale Discussion | SPC | Beckham, Caddo, Canadian, Carter, Cleveland, Comanche and 20 more | 118 min |
| Jun 23, 3:56 PM CDT | Severe Thunderstorm Watch | SPC | Beckham, Blaine, Caddo, Canadian, Carter, Cleveland and 24 more | 6 hr |
Nearby
Mesoscale Discussions in Oklahoma, 2018Mesoscale Discussions in Kansas, 2018Mesoscale Discussions in Texas, 2018Every mesoscale discussion in 2018
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.