Alert archive / Oklahoma / Tornado Watches in 2009
Tornado Watch 195
The Storm Prediction Center issued this tornado watch at Apr 26, 2009, 6:16 PM CDT for 22 counties in Kansas; 44 counties in Oklahoma; 20 counties in Texas. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 26, 2009, 6:16 PM CDT (23:16 UTC)
- Expired
- Apr 27, 2009, 2:11 AM CDT
- In force
- 8 hr
- Issued by
- the Storm Prediction Center
- Particularly dangerous situation
- Yes
- Largest hail expected
- 3 in
- Strongest gust expected
- 60 kt
All 86 counties
Allen County, KS, Barber County, KS, Butler County, KS, Chase County, KS, Chautauqua County, KS, Comanche County, KS, Cowley County, KS, Elk County, KS, Greenwood County, KS, Harper County, KS, Harvey County, KS, Kingman County, KS, Marion County, KS, McPherson County, KS, Montgomery County, KS, Neosho County, KS, Pratt County, KS, Reno County, KS, Sedgwick County, KS, Sumner County, KS, Wilson County, KS, Woodson County, KS, Alfalfa County, OK, Beckham County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Carter 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, Love County, OK, Major County, OK, McClain County, OK, Murray County, OK, Noble County, OK, Oklahoma County, OK, Osage County, OK, Pawnee County, OK, Payne County, OK, Pontotoc County, OK, Pottawatomie County, OK, Roger Mills County, OK, Seminole County, OK, Stephens County, OK, Tillman County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Archer County, TX, Baylor County, TX, Childress County, TX, Clay County, TX, Collingsworth County, TX, Cottle County, TX, Dickens County, TX, Foard County, TX, Hall County, TX, Hardeman County, TX, Hemphill County, TX, Kent County, TX, King County, TX, Knox County, TX, Lipscomb County, TX, Motley County, TX, Stonewall County, TX, Wheeler County, TX, Wichita County, TX, Wilbarger County, TX
The radar
The Vance AFB radar (KVNX), 45 km from the middle of the area, began a volume at 23:19 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
- 90%
- One or more EF2 to EF5 tornadoes
- 70%
- Ten or more severe wind reports
- 50%
- One or more gusts of 65 knots or more
- 60%
- Ten or more severe hail reports
- 70%
- One or more hailstones of 2 inches or more
- 80%
- Six or more combined severe hail and wind reports
- 95%
Warnings issued inside it
34 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 26, 6:16 PM CDT | Tornado Warning | ICT | Harvey, Sedgwick | 27 min |
| Apr 26, 6:23 PM CDT | Severe Thunderstorm Warning | ICT | Butler, Sedgwick, Sumner | 53 min |
| Apr 26, 6:32 PM CDT | Severe Thunderstorm Warning | OUN | Knox | 43 min |
| Apr 26, 6:34 PM CDT | Severe Thunderstorm Warning | OUN | Alfalfa, Woods | 56 min |
| Apr 26, 6:38 PM CDT | Severe Thunderstorm Warning | ICT | Butler, Harvey, Marion | 33 min |
| Apr 26, 6:38 PM CDT | Tornado Warning | OUN | Dewey, Major, Woodward | 42 min |
| Apr 26, 6:43 PM CDT | Severe Thunderstorm Warning | OUN | Foard, Hardeman, Wilbarger | 62 min |
| Apr 26, 6:45 PM CDT | Severe Thunderstorm Warning | LUB | King | 29 min |
| Apr 26, 6:49 PM CDT | Severe Thunderstorm Warning | OUN | Kiowa, Washita | 56 min |
| Apr 26, 6:51 PM CDT | Severe Thunderstorm Warning | ICT | Butler, Chase, Marion | 54 min |
| Apr 26, 6:55 PM CDT | Severe Thunderstorm Warning | ICT | Marion | 31 min |
| Apr 26, 6:55 PM CDT | Severe Thunderstorm Warning | OUN | Greer, Jackson, Kiowa | 50 min |
| Apr 26, 6:59 PM CDT | Flash Flood Warning | ICT | Sedgwick | 6 hr |
| Apr 26, 7:05 PM CDT | Severe Thunderstorm Warning | ICT | Butler, Chase, Marion | 55 min |
| Apr 26, 7:11 PM CDT | Severe Thunderstorm Warning | OUN | Alfalfa, Grant, Woods | 64 min |
| Apr 26, 7:15 PM CDT | Severe Thunderstorm Warning | OUN | Caddo, Canadian, Washita | 60 min |
| Apr 26, 7:16 PM CDT | Severe Thunderstorm Warning | OUN | Woodward | 59 min |
| Apr 26, 7:19 PM CDT | Severe Thunderstorm Warning | OUN | Alfalfa, Major, Woods | 41 min |
| Apr 26, 7:30 PM CDT | Severe Thunderstorm Warning | OUN | Comanche, Jackson, Tillman | 60 min |
| Apr 26, 7:32 PM CDT | Flash Flood Warning | ICT | Harper | 4 hr |
| Apr 26, 7:44 PM CDT | Severe Thunderstorm Warning | OUN | Foard, Hardeman, Wilbarger | 35 min |
| Apr 26, 7:59 PM CDT | Severe Thunderstorm Warning | OUN | Alfalfa, Woods, Woodward | 61 min |
| Apr 26, 8:10 PM CDT | Severe Thunderstorm Warning | OUN | Alfalfa, Grant | 65 min |
| Apr 26, 8:24 PM CDT | Severe Thunderstorm Warning | OUN | Comanche, Cotton, Tillman | 66 min |
| Apr 26, 8:27 PM CDT | Severe Thunderstorm Warning | ICT | Harper | 33 min |
| Apr 26, 8:41 PM CDT | Severe Thunderstorm Warning | ICT | Sumner | 34 min |
| Apr 26, 9:27 PM CDT | Severe Thunderstorm Warning | ICT | Harper, Sumner | 33 min |
| Apr 26, 9:55 PM CDT | Severe Thunderstorm Warning | ICT | Sumner | 35 min |
| Apr 26, 10:08 PM CDT | Severe Thunderstorm Warning | ICT | Sedgwick | 22 min |
| Apr 26, 10:22 PM CDT | Severe Thunderstorm Warning | OUN | Comanche, Grady, Stephens | 38 min |
| Apr 26, 10:33 PM CDT | Flash Flood Warning | ICT | Butler | 6 hr |
| Apr 26, 10:56 PM CDT | Flash Flood Warning | ICT | Harper, Kingman, Sumner | 6 hr |
| Apr 26, 10:59 PM CDT | Severe Thunderstorm Warning | OUN | Grady | 23 min |
| Apr 27, 12:59 AM CDT | Flash Flood Warning | ICT | Butler, Sedgwick | 4 hr |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Norman, OK (KOUN), launched 12:00Z, 11.3 hours before the alert went out and 153 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
- 1610 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 547 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 241 m²/s²
- 0-3 km storm-relative helicity
- 326 m²/s²
- Significant tornado parameter
- 2.1
- Supercell composite
- 10.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 25, 7:17 PM CDT | Mesoscale Discussion | SPC | Johnson, Leavenworth, Wyandotte | 58 min |
| Apr 25, 9:58 PM CDT | Mesoscale Discussion | SPC | Allen, Anderson, Butler, Chase, Chautauqua, Clay and 40 more | 92 min |
| Apr 25, 10:09 PM CDT | Severe Thunderstorm Watch | SPC | Anderson, Atchison, Brown, Clay, Cloud, Coffey and 24 more | 6 hr |
| Apr 25, 10:39 PM CDT | Tornado Watch | SPC | Allen, Chautauqua, Cowley, Elk, Harper, Labette and 5 more | 4 hr |
| Apr 26, 1:28 AM CDT | Mesoscale Discussion | SPC | Allen, Barber, Chautauqua, Cowley, Elk, Greenwood and 7 more | 92 min |
| Apr 26, 2:10 AM CDT | Mesoscale Discussion | SPC | Anderson, Atchison, Brown, Clay, Coffey, Dickinson and 20 more | 95 min |
| Apr 26, 2:39 AM CDT | Tornado Watch | SPC | Allen, Chautauqua, Cowley, Elk, Harper, Labette and 5 more | 3 hr |
| Apr 26, 5:47 AM CDT | Mesoscale Discussion | SPC | Barton, Dickinson, Edwards, Ellsworth, Ford, Lincoln and 8 more | 58 min |
| Apr 26, 5:58 AM CDT | Tornado Watch | SPC | Barton, Chase, Clark, Clay, Comanche, Dickinson and 24 more | 7 hr |
| Apr 26, 9:18 AM CDT | Mesoscale Discussion | SPC | Cloud, Jewell, Mitchell, Republic, Washington | 27 min |
| Apr 26, 10:19 AM CDT | Mesoscale Discussion | SPC | Barber, Butler, Comanche, Cowley, Dickinson, Ellsworth and 14 more | 56 min |
| Apr 26, 10:54 AM CDT | Mesoscale Discussion | SPC | Atchison, Barber, Barton, Butler, Chase, Chautauqua and 42 more | 66 min |
| Apr 26, 11:07 AM CDT | Tornado Watch | SPC | Barber, Barton, Brown, Butler, Chase, Clark and 40 more | 7 hr |
| Apr 26, 12:27 PM CDT | Mesoscale Discussion | SPC | Barton, Clark, Clay, Cloud, Edwards, Ellsworth and 12 more | 2 hr |
| Apr 26, 2:41 PM CDT | Mesoscale Discussion | SPC | Barber, Brown, Butler, Chase, Clay, Cloud and 29 more | 3 hr |
| Apr 26, 5:02 PM CDT | Tornado Watch | SPC | Anderson, Atchison, Brown, Coffey, Doniphan, Douglas and 13 more | 6 hr |
| Apr 26, 5:44 PM CDT | Mesoscale Discussion | SPC | Barber, Butler, Cowley, Harper, Harvey, Kingman and 5 more | 61 min |
| Apr 26, 6:14 PM CDT | Mesoscale Discussion | SPC | Anderson, Atchison, Brown, Chase, Coffey, Doniphan and 16 more | 61 min |
| Apr 26, 6:56 AM CDT | Mesoscale Discussion | SPC | Beckham, Ellis, Harper, Roger Mills | 94 min |
| Apr 26, 12:58 PM CDT | Mesoscale Discussion | SPC | Harmon, Jackson | 92 min |
| Apr 26, 1:37 PM CDT | Tornado Watch | SPC | Caddo, Canadian, Carter, Cleveland, Comanche, Cotton and 21 more | 5 hr |
| Apr 26, 3:34 PM CDT | Mesoscale Discussion | SPC | Beckham, Blaine, Caddo, Canadian, Cleveland, Comanche and 24 more | 116 min |
| Apr 26, 3:01 PM CDT | Tornado Watch | SPC | Callahan, Coke, Crockett, Fisher, Glasscock, Haskell and 18 more | 5 hr |
| Apr 26, 6:25 PM CDT | Mesoscale Discussion | SPC | Callahan, Coke, Coleman, Concho, Crockett, Edwards and 25 more | 2 hr |
Nearby
Tornado Watches in Oklahoma, 2009Tornado Watches in Kansas, 2009Tornado Watches in Texas, 2009Every tornado watch in 2009
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.