Alert archive / Oklahoma / Mesoscale Discussions in 2013
Mesoscale Discussion 1933
The Storm Prediction Center issued this mesoscale discussion at Oct 4, 2013, 2:10 PM CDT for 13 counties in Kansas; 20 counties in Oklahoma. It was in force for 65 min.
The area
The outline as issued.
The facts
- Issued
- Oct 4, 2013, 2:10 PM CDT (19:10 UTC)
- Expired
- Oct 4, 2013, 3:15 PM CDT
- In force
- 65 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 80%
All 33 counties
Barber County, KS, Butler County, KS, Chase County, KS, Cowley County, KS, Greenwood County, KS, Harper County, KS, Harvey County, KS, Kingman County, KS, Marion County, KS, McPherson County, KS, Reno County, KS, Sedgwick County, KS, Sumner County, KS, Alfalfa County, OK, Beckham County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Custer County, OK, Dewey County, OK, Garfield County, OK, Grant County, OK, Greer County, OK, Jackson County, OK, Kay County, OK, Kingfisher County, OK, Kiowa County, OK, Major County, OK, Noble County, OK, Roger Mills County, OK, Washita County, OK, Woods County, OK, Woodward County, OK
The radar
The Vance AFB radar (KVNX), 21 km from the middle of the area, began a volume at 19:15 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
Topeka, KS (KFOE), launched 12:00Z, 7.2 hours before the alert went out and 337 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
- 1889 J/kg
- Mixed-layer CIN
- -90 J/kg
- Mixed-layer LCL
- 629 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 238 m²/s²
- 0-3 km storm-relative helicity
- 182 m²/s²
- Significant tornado parameter
- 1.6
- Supercell composite
- 11.8
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 |
|---|---|---|---|---|
| Oct 4, 1:28 PM CDT | Mesoscale Discussion | SPC | Atchison, Brown, Clay, Dickinson, Doniphan, Douglas and 15 more | 2 hr |
| Oct 4, 3:11 PM CDT | Severe Thunderstorm Watch | SPC | Allen, Anderson, Atchison, Brown, Butler, Chase and 36 more | 9 hr |
| Oct 4, 5:34 PM CDT | Mesoscale Discussion | SPC | Harper, Sedgwick, Sumner | 56 min |
Nearby
Mesoscale Discussions in Oklahoma, 2013Mesoscale Discussions in Kansas, 2013Every mesoscale discussion in 2013
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.