Alert archive / Oklahoma / Severe Thunderstorm Watches in 2013
Severe Thunderstorm Watch 86
The Storm Prediction Center issued this severe thunderstorm watch at Apr 9, 2013, 5:33 PM CDT for 24 counties in Kansas; 37 counties in Oklahoma; 8 counties in Texas. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 9, 2013, 5:33 PM CDT (22:33 UTC)
- Expired
- Apr 10, 2013, 1:00 AM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 69 counties
Barber County, KS, Barton County, KS, Butler County, KS, Chase County, KS, Comanche County, KS, Cowley County, KS, Edwards County, KS, Ellsworth County, KS, Harper County, KS, Harvey County, KS, Kingman County, KS, Kiowa County, KS, Lincoln County, KS, Marion County, KS, McPherson 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, Beckham County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Cleveland County, OK, Comanche County, OK, Cotton County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Garfield County, OK, Garvin County, OK, Grady County, OK, Grant County, OK, Greer County, OK, Harmon County, OK, Harper County, OK, Jackson County, OK, Jefferson County, OK, Kay County, OK, Kingfisher County, OK, Kiowa County, OK, Lincoln County, OK, Logan County, OK, Major County, OK, McClain County, OK, Noble County, OK, Oklahoma County, OK, Payne County, OK, Pottawatomie County, OK, Roger Mills County, OK, Stephens County, OK, Tillman County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Archer County, TX, Baylor County, TX, Clay County, TX, Foard County, TX, Hardeman County, TX, Knox County, TX, Wichita County, TX, Wilbarger County, TX
The radar
The Norman radar (KTLX), 127 km from the middle of the area, began a volume at 22:34 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 5%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 10%
- One or more gusts of 65 knots or more
- 5%
- Ten or more severe hail reports
- 90%
- One or more hailstones of 2 inches or more
- 40%
- Six or more combined severe hail and wind reports
- 95%
Warnings issued inside it
17 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 9, 6:16 PM CDT | Severe Thunderstorm Warning | DDC | Barber, Clark, Comanche, Kiowa | 44 min |
| Apr 9, 6:57 PM CDT | Severe Thunderstorm Warning | DDC | Barber, Comanche, Kiowa, Pratt, Stafford | 48 min |
| Apr 9, 7:14 PM CDT | Severe Thunderstorm Warning | OUN | Archer | 61 min |
| Apr 9, 7:15 PM CDT | Severe Thunderstorm Warning | DDC | Stafford | 45 min |
| Apr 9, 7:40 PM CDT | Severe Thunderstorm Warning | DDC | Pratt, Stafford | 50 min |
| Apr 9, 7:42 PM CDT | Severe Thunderstorm Warning | DDC | Barber, Kiowa, Pratt | 48 min |
| Apr 9, 7:47 PM CDT | Severe Thunderstorm Warning | OUN | Archer, Clay | 58 min |
| Apr 9, 7:49 PM CDT | Severe Thunderstorm Warning | ICT | Barton, Reno, Rice | 41 min |
| Apr 9, 8:20 PM CDT | Severe Thunderstorm Warning | ICT | Ellsworth, Lincoln, Rice, Saline | 55 min |
| Apr 9, 8:32 PM CDT | Severe Thunderstorm Warning | ICT | McPherson, Reno, Rice | 58 min |
| Apr 9, 9:00 PM CDT | Severe Thunderstorm Warning | OUN | Archer, Clay | 30 min |
| Apr 9, 9:15 PM CDT | Severe Thunderstorm Warning | OUN | Archer, Wichita | 45 min |
| Apr 9, 9:24 PM CDT | Severe Thunderstorm Warning | ICT | McPherson | 51 min |
| Apr 9, 9:25 PM CDT | Severe Thunderstorm Warning | OUN | Archer, Clay | 50 min |
| Apr 9, 9:45 PM CDT | Severe Thunderstorm Warning | OUN | Comanche, Cotton, Tillman | 45 min |
| Apr 9, 11:25 PM CDT | Severe Thunderstorm Warning | OUN | Blaine, Caddo, Custer, Washita | 50 min |
| Apr 9, 11:52 PM CDT | Severe Thunderstorm Warning | OUN | Baylor, Foard, Hardeman, Knox, Wilbarger | 38 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Dodge City, (KDDC), launched 12:00Z, 10.6 hours before the alert went out and 267 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
- 2090 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 537 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 97 m²/s²
- 0-3 km storm-relative helicity
- 101 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.5
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 8, 8:43 PM CDT | Mesoscale Discussion | SPC | Cheyenne | 62 min |
| Apr 9, 12:30 PM CDT | Mesoscale Discussion | SPC | Decatur, Graham, Norton, Phillips, Rawlins, Sheridan and 1 more | 4 hr |
| Apr 9, 3:00 PM CDT | Mesoscale Discussion | SPC | Allen, Anderson, Atchison, Barber, Barton, Bourbon and 66 more | 2 hr |
| Apr 9, 5:45 PM CDT | Severe Thunderstorm Watch | SPC | Brown, Clay, Cloud, Dickinson, Geary, Jackson and 11 more | 7 hr |
| Apr 9, 2:14 PM CDT | Mesoscale Discussion | SPC | Blaine, Caddo, Canadian, Carter, Cleveland, Comanche and 20 more | 2 hr |
Nearby
Severe Thunderstorm Watches in Oklahoma, 2013Severe Thunderstorm Watches in Kansas, 2013Severe Thunderstorm Watches in Texas, 2013Every severe thunderstorm watch 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.