Alert archive / Kansas / Tornado Watches in 2009

Tornado Watch 183

April 25, 200930 counties in Kansas; 24 counties in Oklahoma; 4 counties in Texas

The Storm Prediction Center issued this tornado watch at Apr 25, 2009, 3:36 PM CDT for 30 counties in Kansas; 24 counties in Oklahoma; 4 counties in Texas. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Apr 25, 2009, 3:36 PM CDT (20:36 UTC)
Expired
Apr 25, 2009, 10:42 PM CDT
In force
7 hr
Issued by
the Storm Prediction Center
Largest hail expected
3 in
Strongest gust expected
70 kt
All 58 counties

Allen County, KS, Anderson County, KS, Barber County, KS, Butler County, KS, Chase County, KS, Chautauqua County, KS, Coffey County, KS, Cowley County, KS, Douglas County, KS, Elk County, KS, Franklin County, KS, Greenwood County, KS, Harper County, KS, Harvey County, KS, Jefferson County, KS, Kingman County, KS, Labette County, KS, Lyon County, KS, Marion County, KS, Montgomery County, KS, Morris County, KS, Neosho County, KS, Osage County, KS, Reno County, KS, Sedgwick County, KS, Shawnee County, KS, Sumner County, KS, Wabaunsee County, KS, Wilson County, KS, Woodson County, KS, Alfalfa County, OK, Beckham County, OK, Blaine County, OK, Caddo County, OK, Canadian County, OK, Custer County, OK, Dewey County, OK, Ellis County, OK, Garfield County, OK, Grant County, OK, Greer County, OK, Harmon County, OK, Harper County, OK, Kay County, OK, Kingfisher County, OK, Kiowa County, OK, Major County, OK, Noble County, OK, Osage County, OK, Pawnee County, OK, Roger Mills County, OK, Washita County, OK, Woods County, OK, Woodward County, OK, Collingsworth County, TX, Hemphill County, TX, Lipscomb County, TX, Wheeler County, TX

The radar

The Vance AFB radar (KVNX), 30 km from the middle of the area, began a volume at 20:39 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
70%
One or more EF2 to EF5 tornadoes
30%
Ten or more severe wind reports
50%
One or more gusts of 65 knots or more
40%
Ten or more severe hail reports
90%
One or more hailstones of 2 inches or more
70%
Six or more combined severe hail and wind reports
95%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Apr 25, 3:58 PM CDTSevere Thunderstorm WarningTOPLyon, Osage, Wabaunsee32 min
Apr 25, 4:28 PM CDTSevere Thunderstorm WarningAMAGray, Hemphill, Roberts, Wheeler62 min
Apr 25, 4:47 PM CDTSevere Thunderstorm WarningTOPJefferson28 min
Apr 25, 4:47 PM CDTSevere Thunderstorm WarningOUNAlfalfa, Grant58 min
Apr 25, 4:49 PM CDTSevere Thunderstorm WarningTOPJackson, Jefferson26 min
Apr 25, 4:50 PM CDTSevere Thunderstorm WarningICTSumner55 min
Apr 25, 4:55 PM CDTSevere Thunderstorm WarningTOPDouglas, Osage, Shawnee50 min
Apr 25, 5:02 PM CDTSevere Thunderstorm WarningOUNBeckham, Custer, Roger Mills, Washita58 min
Apr 25, 5:10 PM CDTSevere Thunderstorm WarningOUNMajor, Woods, Woodward65 min
Apr 25, 5:16 PM CDTTornado WarningTOPDouglas, Osage, Shawnee29 min
Apr 25, 5:18 PM CDTSevere Thunderstorm WarningICTButler, Cowley, Sedgwick, Sumner57 min
Apr 25, 5:28 PM CDTTornado WarningTOPDouglas, Jefferson, Osage, Shawnee47 min
Apr 25, 5:29 PM CDTSevere Thunderstorm WarningTOPLyon, Osage31 min
Apr 25, 5:30 PM CDTSevere Thunderstorm WarningOUNGarfield, Grant60 min
Apr 25, 5:36 PM CDTSevere Thunderstorm WarningOUNEllis, Roger Mills54 min
Apr 25, 5:42 PM CDTSevere Thunderstorm WarningICTHarper, Sumner63 min
Apr 25, 5:46 PM CDTSevere Thunderstorm WarningAMAHemphill, Wheeler29 min
Apr 25, 5:49 PM CDTSevere Thunderstorm WarningOUNAlfalfa, Major, Woods56 min
Apr 25, 5:56 PM CDTSevere Thunderstorm WarningOUNCuster, Dewey, Roger Mills, Washita64 min
Apr 25, 5:59 PM CDTSevere Thunderstorm WarningOUNMajor, Woods, Woodward61 min
Apr 25, 6:02 PM CDTSevere Thunderstorm WarningOUNBeckham, Greer, Harmon, Kiowa58 min
Apr 25, 6:09 PM CDTTornado WarningTOPDouglas, Jefferson23 min
Apr 25, 6:13 PM CDTSevere Thunderstorm WarningOUNBeckham, Custer, Washita62 min
Apr 25, 6:15 PM CDTSevere Thunderstorm WarningICTButler, Sedgwick32 min
Apr 25, 6:17 PM CDTSevere Thunderstorm WarningICTCowley, Sumner58 min
Apr 25, 6:20 PM CDTSevere Thunderstorm WarningOUNDewey, Major, Woods, Woodward40 min
Apr 25, 6:30 PM CDTTornado WarningOUNEllis, Roger Mills45 min
Apr 25, 6:33 PM CDTTornado WarningICTCowley, Sumner42 min
Apr 25, 6:36 PM CDTSevere Thunderstorm WarningOUNBeckham, Greer, Harmon54 min
Apr 25, 6:38 PM CDTSevere Thunderstorm WarningOUNGrant, Kay67 min
Apr 25, 6:39 PM CDTSevere Thunderstorm WarningAMACollingsworth23 min
Apr 25, 6:45 PM CDTSevere Thunderstorm WarningAMAHemphill, Lipscomb25 min
Apr 25, 6:46 PM CDTSevere Thunderstorm WarningOUNAlfalfa, Garfield, Grant, Major59 min
Apr 25, 6:50 PM CDTSevere Thunderstorm WarningOUNDewey, Ellis, Roger Mills, Woodward55 min
Apr 25, 6:54 PM CDTSevere Thunderstorm WarningOUNBeckham, Greer, Kiowa, Washita66 min
Apr 25, 6:59 PM CDTTornado WarningOUNGrant, Kay46 min
Apr 25, 7:00 PM CDTSevere Thunderstorm WarningTOPDouglas, Osage, Shawnee45 min
Apr 25, 7:04 PM CDTSevere Thunderstorm WarningOUNBlaine, Custer, Dewey56 min
Apr 25, 7:12 PM CDTSevere Thunderstorm WarningOUNCuster, Washita48 min
Apr 25, 7:14 PM CDTTornado WarningICTCowley, Sumner46 min
Apr 25, 7:16 PM CDTSevere Thunderstorm WarningOUNDewey, Ellis, Roger Mills, Woodward59 min
Apr 25, 7:19 PM CDTSevere Thunderstorm WarningICTHarper, Sumner56 min
Apr 25, 7:31 PM CDTSevere Thunderstorm WarningOUNBeckham, Greer, Washita59 min
Apr 25, 7:44 PM CDTSevere Thunderstorm WarningOUNGrant, Kay61 min
Apr 25, 7:46 PM CDTSevere Thunderstorm WarningOUNAlfalfa, Garfield, Grant59 min
Apr 25, 7:53 PM CDTSevere Thunderstorm WarningICTButler, Cowley52 min
Apr 25, 7:53 PM CDTSevere Thunderstorm WarningOUNBlaine, Custer, Dewey67 min
Apr 25, 7:57 PM CDTSevere Thunderstorm WarningOUNCuster, Washita63 min
Apr 25, 8:17 PM CDTSevere Thunderstorm WarningTOPDouglas, Jefferson28 min
Apr 25, 8:18 PM CDTSevere Thunderstorm WarningOUNBlaine, Dewey, Major, Woodward57 min
Apr 25, 8:26 PM CDTSevere Thunderstorm WarningOUNBeckham, Custer, Washita64 min
Apr 25, 8:33 PM CDTTornado WarningICTButler27 min
Apr 25, 8:46 PM CDTSevere Thunderstorm WarningOUNGarfield, Grant, Kay59 min
Apr 25, 8:53 PM CDTSevere Thunderstorm WarningOUNBlaine, Caddo, Custer, Washita67 min
Apr 25, 8:56 PM CDTTornado WarningICTButler, Greenwood34 min
Apr 25, 8:57 PM CDTTornado WarningOUNKay48 min
Apr 25, 9:02 PM CDTSevere Thunderstorm WarningICTCowley, Sumner43 min
Apr 25, 9:07 PM CDTSevere Thunderstorm WarningOUNBlaine, Dewey, Major38 min
Apr 25, 9:16 PM CDTSevere Thunderstorm WarningOUNBlaine, Custer, Dewey, Major, Woods, Woodward59 min
Apr 25, 9:18 PM CDTSevere Thunderstorm WarningOUNCaddo, Custer, Washita57 min
Apr 25, 9:42 PM CDTTornado WarningOUNGarfield33 min
Apr 25, 9:45 PM CDTSevere Thunderstorm WarningOUNBlaine, Major60 min
Apr 25, 9:46 PM CDTSevere Thunderstorm WarningOUNKay59 min
Apr 25, 9:50 PM CDTSevere Thunderstorm WarningOUNBlaine55 min
Apr 25, 9:52 PM CDTSevere Thunderstorm WarningICTButler14 min
Apr 25, 10:13 PM CDTSevere Thunderstorm WarningOUNAlfalfa, Dewey, Major, Woods62 min
Apr 25, 10:13 PM CDTTornado WarningOUNGarfield, Grant32 min
Apr 25, 10:37 PM CDTSevere Thunderstorm WarningOUNBlaine, Garfield, Kingfisher, Major53 min
Apr 25, 10:41 PM CDTSevere Thunderstorm WarningOUNAlfalfa, Garfield, Grant, Major46 min
Apr 25, 10:42 PM CDTTornado WarningOUNGarfield, Grant63 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

Norman, OK (KOUN), launched 12:00Z, 8.6 hours before the alert went out and 202 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, Norman, OK at 12:00Z on 2009-04-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 777 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, Norman, OK at 12:00Z on 2009-04-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 257 square meters per square second.193958Sfc1 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
777 J/kg
Mixed-layer CIN
-147 J/kg
Mixed-layer LCL
537 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
257 m²/s²
0-3 km storm-relative helicity
294 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 25, 1:23 PM CDTMesoscale DiscussionSPCHarper, Sedgwick, Sumner3 hr
Apr 25, 3:49 PM CDTMesoscale DiscussionSPCHarper, Sedgwick, Sumner116 min
Apr 25, 4:30 PM CDTSevere Thunderstorm WatchSPCAtchison, Doniphan, Johnson, Leavenworth, Miami, Wyandotte6 hr
Apr 25, 6:38 PM CDTMesoscale DiscussionSPCAllen, Anderson, Butler, Chase, Chautauqua, Coffey and 15 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.