Alert archive / Kansas / Tornado Watches in 2009

Tornado Watch 190

April 26, 200946 counties in Kansas; 17 counties in Oklahoma; 8 counties in Texas

The Storm Prediction Center issued this tornado watch at Apr 26, 2009, 11:07 AM CDT for 46 counties in Kansas; 17 counties in Oklahoma; 8 counties in Texas. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Apr 26, 2009, 11:07 AM CDT (16:07 UTC)
Expired
Apr 26, 2009, 6:22 PM CDT
In force
7 hr
Issued by
the Storm Prediction Center
Particularly dangerous situation
Yes
Largest hail expected
4 in
Strongest gust expected
70 kt
All 71 counties

Barber County, KS, Barton County, KS, Brown County, KS, Butler County, KS, Chase County, KS, Clark County, KS, Clay County, KS, Cloud County, KS, Comanche County, KS, Cowley County, KS, Dickinson County, KS, Edwards County, KS, Ellsworth County, KS, Ford County, KS, Geary County, KS, Greenwood County, KS, Harper County, KS, Harvey County, KS, Jackson County, KS, Jewell County, KS, Kingman County, KS, Kiowa County, KS, Lincoln County, KS, Lyon County, KS, Marion County, KS, Marshall County, KS, McPherson County, KS, Meade County, KS, Mitchell County, KS, Morris County, KS, Nemaha County, KS, Osage County, KS, Ottawa County, KS, Pottawatomie County, KS, Pratt County, KS, Reno County, KS, Republic County, KS, Rice County, KS, Riley County, KS, Saline County, KS, Sedgwick County, KS, Shawnee County, KS, Stafford County, KS, Sumner County, KS, Wabaunsee County, KS, Washington County, KS, Alfalfa County, OK, Beaver County, OK, Beckham County, OK, Blaine County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Garfield County, OK, Grant County, OK, Harper County, OK, Kay County, OK, Kingfisher County, OK, Major County, OK, Roger Mills County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Collingsworth County, TX, Donley County, TX, Gray County, TX, Hemphill County, TX, Lipscomb County, TX, Ochiltree County, TX, Roberts County, TX, Wheeler County, TX

The radar

The Vance AFB radar (KVNX), 81 km from the middle of the area, began a volume at 16:10 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
95%
One or more EF2 to EF5 tornadoes
60%
Ten or more severe wind reports
80%
One or more gusts of 65 knots or more
60%
Ten or more severe hail reports
95%
One or more hailstones of 2 inches or more
70%
Six or more combined severe hail and wind reports
95%

Warnings issued inside it

84 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Apr 26, 11:14 AM CDTSevere Thunderstorm WarningAMACollingsworth, Wheeler41 min
Apr 26, 11:28 AM CDTSevere Thunderstorm WarningAMABeaver62 min
Apr 26, 11:28 AM CDTSevere Thunderstorm WarningOUNHarper47 min
Apr 26, 11:42 AM CDTSevere Thunderstorm WarningDDCComanche48 min
Apr 26, 11:45 AM CDTSevere Thunderstorm WarningICTBarton, Ellsworth, Lincoln60 min
Apr 26, 11:58 AM CDTSevere Thunderstorm WarningDDCComanche, Kiowa47 min
Apr 26, 12:03 PM CDTSevere Thunderstorm WarningDDCClark, Comanche42 min
Apr 26, 12:09 PM CDTTornado WarningDDCClark, Comanche, Kiowa36 min
Apr 26, 12:15 PM CDTSevere Thunderstorm WarningOUNBeckham, Greer, Kiowa, Washita45 min
Apr 26, 12:20 PM CDTTornado WarningICTEllsworth, Lincoln25 min
Apr 26, 12:22 PM CDTSevere Thunderstorm WarningAMABeaver53 min
Apr 26, 12:25 PM CDTTornado WarningDDCEdwards, Kiowa, Pratt, Stafford35 min
Apr 26, 12:29 PM CDTSevere Thunderstorm WarningICTBarton33 min
Apr 26, 12:35 PM CDTTornado WarningAMABeaver25 min
Apr 26, 12:36 PM CDTTornado WarningOUNBeckham, Greer, Kiowa, Washita39 min
Apr 26, 12:37 PM CDTTornado WarningDDCClark, Comanche18 min
Apr 26, 12:37 PM CDTSevere Thunderstorm WarningICTEllsworth, Lincoln47 min
Apr 26, 12:38 PM CDTSevere Thunderstorm WarningOUNEllis, Roger Mills67 min
Apr 26, 12:39 PM CDTFlash Flood WarningAMABeaver4 hr
Apr 26, 12:45 PM CDTTornado WarningDDCComanche, Kiowa30 min
Apr 26, 12:48 PM CDTSevere Thunderstorm WarningAMAGray, Hemphill, Roberts57 min
Apr 26, 12:59 PM CDTSevere Thunderstorm WarningOUNHarper46 min
Apr 26, 1:05 PM CDTSevere Thunderstorm WarningTOPOttawa40 min
Apr 26, 1:07 PM CDTSevere Thunderstorm WarningTOPRepublic, Washington53 min
Apr 26, 1:12 PM CDTSevere Thunderstorm WarningOUNCuster, Washita63 min
Apr 26, 1:17 PM CDTSevere Thunderstorm WarningDDCBarber, Edwards, Kiowa, Pratt, Stafford43 min
Apr 26, 1:28 PM CDTSevere Thunderstorm WarningOUNAlfalfa, Major, Woods62 min
Apr 26, 1:29 PM CDTSevere Thunderstorm WarningDDCPawnee, Stafford42 min
Apr 26, 1:30 PM CDTSevere Thunderstorm WarningOUNDewey, Ellis, Major, Woodward22 min
Apr 26, 1:30 PM CDTSevere Thunderstorm WarningAMAHemphill, Lipscomb60 min
Apr 26, 1:42 PM CDTSevere Thunderstorm WarningDDCClark, Comanche, Kiowa48 min
Apr 26, 1:42 PM CDTSevere Thunderstorm WarningTOPCloud, Ottawa48 min
Apr 26, 1:49 PM CDTSevere Thunderstorm WarningTOPClay, Washington26 min
Apr 26, 1:54 PM CDTSevere Thunderstorm WarningAMAHemphill, Lipscomb66 min
Apr 26, 1:55 PM CDTSevere Thunderstorm WarningOUNEllis, Woodward65 min
Apr 26, 1:58 PM CDTSevere Thunderstorm WarningICTReno, Rice34 min
Apr 26, 2:01 PM CDTSevere Thunderstorm WarningDDCKiowa, Pratt44 min
Apr 26, 2:09 PM CDTSevere Thunderstorm WarningOUNBlaine, Custer, Dewey, Major66 min
Apr 26, 2:14 PM CDTSevere Thunderstorm WarningTOPMarshall, Washington46 min
Apr 26, 2:25 PM CDTSevere Thunderstorm WarningDDCPratt, Stafford31 min
Apr 26, 2:28 PM CDTSevere Thunderstorm WarningAMABeaver62 min
Apr 26, 2:29 PM CDTSevere Thunderstorm WarningOUNAlfalfa, Grant48 min
Apr 26, 2:46 PM CDTSevere Thunderstorm WarningOUNEllis, Harper, Woods, Woodward59 min
Apr 26, 2:53 PM CDTSevere Thunderstorm WarningDDCKiowa, Pratt52 min
Apr 26, 2:53 PM CDTSevere Thunderstorm WarningAMAGray, Hemphill, Wheeler67 min
Apr 26, 3:13 PM CDTSevere Thunderstorm WarningOUNAlfalfa, Major62 min
Apr 26, 3:19 PM CDTTornado WarningTOPClay, Dickinson, Geary26 min
Apr 26, 3:23 PM CDTSevere Thunderstorm WarningAMAHemphill, Lipscomb, Roberts67 min
Apr 26, 3:27 PM CDTSevere Thunderstorm WarningOUNEllis, Roger Mills63 min
Apr 26, 3:31 PM CDTTornado WarningICTButler, Sedgwick44 min
Apr 26, 3:38 PM CDTSevere Thunderstorm WarningOUNAlfalfa, Grant67 min
Apr 26, 3:39 PM CDTSevere Thunderstorm WarningICTHarvey, Marion36 min
Apr 26, 3:39 PM CDTSevere Thunderstorm WarningAMAHemphill, Wheeler66 min
Apr 26, 3:46 PM CDTSevere Thunderstorm WarningOUNEllis, Harper, Woods, Woodward59 min
Apr 26, 3:49 PM CDTSevere Thunderstorm WarningICTMcPherson, Reno, Rice41 min
Apr 26, 3:50 PM CDTFlash Flood WarningTOPClay, Marshall, Washington3 hr
Apr 26, 3:50 PM CDTFlash Flood WarningOUNEllis, Harper, Woodward4 hr
Apr 26, 4:01 PM CDTSevere Thunderstorm WarningDDCBarber, Comanche44 min
Apr 26, 4:01 PM CDTTornado WarningICTButler, Chase, Marion31 min
Apr 26, 4:04 PM CDTTornado WarningOUNEllis, Roger Mills56 min
Apr 26, 4:13 PM CDTSevere Thunderstorm WarningAMAHemphill, Wheeler62 min
Apr 26, 4:38 PM CDTSevere Thunderstorm WarningOUNEllis, Roger Mills67 min
Apr 26, 4:40 PM CDTSevere Thunderstorm WarningDDCBarber, Comanche65 min
Apr 26, 4:40 PM CDTSevere Thunderstorm WarningAMAHemphill, Wheeler55 min
Apr 26, 4:42 PM CDTSevere Thunderstorm WarningOUNAlfalfa, Harper, Woods, Woodward63 min
Apr 26, 4:52 PM CDTSevere Thunderstorm WarningDDCBarber53 min
Apr 26, 4:56 PM CDTTornado WarningOUNDewey, Ellis, Woodward64 min
Apr 26, 4:58 PM CDTSevere Thunderstorm WarningICTHarvey, McPherson, Marion47 min
Apr 26, 4:59 PM CDTTornado WarningDDCBarber32 min
Apr 26, 5:24 PM CDTSevere Thunderstorm WarningICTHarper, Kingman51 min
Apr 26, 5:27 PM CDTSevere Thunderstorm WarningOUNAlfalfa63 min
Apr 26, 5:28 PM CDTSevere Thunderstorm WarningICTMcPherson, Marion38 min
Apr 26, 5:39 PM CDTSevere Thunderstorm WarningOUNEllis, Roger Mills66 min
Apr 26, 5:42 PM CDTTornado WarningOUNMajor, Woods, Woodward54 min
Apr 26, 5:46 PM CDTTornado WarningICTSedgwick44 min
Apr 26, 5:47 PM CDTTornado WarningOUNDewey, Ellis, Roger Mills, Woodward58 min
Apr 26, 5:50 PM CDTSevere Thunderstorm WarningTOPDickinson, Geary, Morris, Riley, Wabaunsee40 min
Apr 26, 5:52 PM CDTSevere Thunderstorm WarningAMAHemphill, Lipscomb21 min
Apr 26, 5:54 PM CDTSevere Thunderstorm WarningICTHarper, Kingman, Reno36 min
Apr 26, 5:58 PM CDTSevere Thunderstorm WarningTOPPottawatomie, Wabaunsee27 min
Apr 26, 6:07 PM CDTSevere Thunderstorm WarningICTSumner31 min
Apr 26, 6:13 PM CDTFlash Flood WarningTOPDickinson, Geary, Morris4 hr
Apr 26, 6:13 PM CDTSevere Thunderstorm WarningOUNCaddo, Comanche, Kiowa, Washita62 min
Apr 26, 6:16 PM CDTTornado WarningICTHarvey, Sedgwick27 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, 4.1 hours before the alert went out and 114 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.

Skew-T log-pSkew-T log-p diagram, Dodge City, at 12:00Z on 2009-04-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1949 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Dodge City, at 12:00Z on 2009-04-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 382 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1949 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
641 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
382 m²/s²
0-3 km storm-relative helicity
418 m²/s²
Significant tornado parameter
3.6
Supercell composite
18.1

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 25, 7:17 PM CDTMesoscale DiscussionSPCJohnson, Leavenworth, Wyandotte58 min
Apr 25, 9:58 PM CDTMesoscale DiscussionSPCAllen, Anderson, Butler, Chase, Chautauqua, Clay and 40 more92 min
Apr 25, 10:09 PM CDTSevere Thunderstorm WatchSPCAnderson, Atchison, Brown, Clay, Cloud, Coffey and 24 more6 hr
Apr 25, 10:39 PM CDTTornado WatchSPCAllen, Chautauqua, Cowley, Elk, Harper, Labette and 5 more4 hr
Apr 26, 1:28 AM CDTMesoscale DiscussionSPCAllen, Barber, Chautauqua, Cowley, Elk, Greenwood and 7 more92 min
Apr 26, 2:10 AM CDTMesoscale DiscussionSPCAnderson, Atchison, Brown, Clay, Coffey, Dickinson and 20 more95 min
Apr 26, 2:39 AM CDTTornado WatchSPCAllen, Chautauqua, Cowley, Elk, Harper, Labette and 5 more3 hr
Apr 26, 5:47 AM CDTMesoscale DiscussionSPCBarton, Dickinson, Edwards, Ellsworth, Ford, Lincoln and 8 more58 min
Apr 26, 5:58 AM CDTTornado WatchSPCBarton, Chase, Clark, Clay, Comanche, Dickinson and 24 more7 hr
Apr 26, 9:18 AM CDTMesoscale DiscussionSPCCloud, Jewell, Mitchell, Republic, Washington27 min
Apr 26, 10:19 AM CDTMesoscale DiscussionSPCBarber, Butler, Comanche, Cowley, Dickinson, Ellsworth and 14 more56 min
Apr 26, 10:54 AM CDTMesoscale DiscussionSPCAtchison, Barber, Barton, Butler, Chase, Chautauqua and 42 more66 min
Apr 26, 12:27 PM CDTMesoscale DiscussionSPCBarton, Clark, Clay, Cloud, Edwards, Ellsworth and 12 more2 hr
Apr 26, 2:41 PM CDTMesoscale DiscussionSPCBarber, Brown, Butler, Chase, Clay, Cloud and 29 more3 hr
Apr 26, 5:02 PM CDTTornado WatchSPCAnderson, Atchison, Brown, Coffey, Doniphan, Douglas and 13 more6 hr
Apr 26, 5:44 PM CDTMesoscale DiscussionSPCBarber, Butler, Cowley, Harper, Harvey, Kingman and 5 more61 min
Apr 26, 6:14 PM CDTMesoscale DiscussionSPCAnderson, Atchison, Brown, Chase, Coffey, Doniphan and 16 more61 min
Apr 26, 6:16 PM CDTTornado Watch PDSSPCAllen, Barber, Butler, Chase, Chautauqua, Comanche and 16 more8 hr
Apr 25, 9:23 PM CDTMesoscale DiscussionSPCAdair, Buchanan, Caldwell, Clark, Clay, Clinton and 12 more67 min
Apr 26, 9:34 AM CDTSevere Thunderstorm WatchSPCAtchison6 hr
Apr 26, 12:30 PM CDTMesoscale DiscussionSPCAtchison60 min
Apr 26, 12:48 PM CDTTornado WatchSPCAndrew, Atchison, Gentry, Harrison, Holt, Nodaway and 1 more4 hr
Apr 26, 6:56 AM CDTMesoscale DiscussionSPCBeckham, Ellis, Harper, Roger Mills94 min
Apr 26, 12:58 PM CDTMesoscale DiscussionSPCHarmon, Jackson92 min
Apr 26, 1:37 PM CDTTornado Watch PDSSPCCaddo, Canadian, Carter, Cleveland, Comanche, Cotton and 21 more5 hr
Apr 26, 3:34 PM CDTMesoscale DiscussionSPCBeckham, Blaine, Caddo, Canadian, Cleveland, Comanche and 24 more116 min
Apr 26, 3:01 PM CDTTornado WatchSPCCallahan, Coke, Crockett, Fisher, Glasscock, Haskell and 18 more5 hr
Apr 26, 6:25 PM CDTMesoscale DiscussionSPCCallahan, Coke, Coleman, Concho, Crockett, Edwards and 25 more2 hr

Nearby

Tornado Watches in Kansas, 2009Tornado Watches in Oklahoma, 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.