Alert archive / Kansas / Severe Thunderstorm Watches in 2007

Severe Thunderstorm Watch 296

May 24, 200731 counties in Kansas; 20 counties in Oklahoma

The Storm Prediction Center issued this severe thunderstorm watch at May 24, 2007, 2:41 AM CDT for 31 counties in Kansas; 20 counties in Oklahoma. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued
May 24, 2007, 2:41 AM CDT (07:41 UTC)
Expired
May 24, 2007, 6:00 AM CDT
In force
3 hr
Issued by
the Storm Prediction Center
Largest hail expected
1.5 in
Strongest gust expected
60 kt
All 51 counties

Anderson County, KS, Brown County, KS, Butler County, KS, Chase County, KS, Coffey County, KS, Cowley County, KS, Dickinson County, KS, Douglas County, KS, Elk County, KS, Franklin County, KS, Geary County, KS, Greenwood County, KS, Harper County, KS, Harvey County, KS, Jackson County, KS, Jefferson County, KS, Kingman County, KS, Lyon County, KS, Marion County, KS, McPherson County, KS, Morris County, KS, Nemaha County, KS, Osage County, KS, Pottawatomie County, KS, Reno County, KS, Riley County, KS, Sedgwick County, KS, Shawnee County, KS, Sumner County, KS, Wabaunsee 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, Garfield County, OK, Grant County, OK, Greer County, OK, Harmon County, OK, Kay County, OK, Kingfisher County, OK, Kiowa County, OK, Logan County, OK, Major County, OK, Noble County, OK, Roger Mills County, OK, Washita County, OK, Woods County, OK

The radar

The Vance AFB radar (KVNX), 34 km from the middle of the area, began a volume at 07:40 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
20%
One or more EF2 to EF5 tornadoes
5%
Ten or more severe wind reports
30%
One or more gusts of 65 knots or more
20%
Ten or more severe hail reports
30%
One or more hailstones of 2 inches or more
20%
Six or more combined severe hail and wind reports
70%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 24, 3:10 AM CDTSevere Thunderstorm WarningICTSedgwick, Sumner65 min
May 24, 3:11 AM CDTSevere Thunderstorm WarningOUNAlfalfa34 min
May 24, 3:20 AM CDTFlash Flood WarningTOPNemaha, Pottawatomie4 hr
May 24, 3:23 AM CDTSevere Thunderstorm WarningOUNGrant37 min
May 24, 3:44 AM CDTSevere Thunderstorm WarningICTSumner31 min
May 24, 3:45 AM CDTSevere Thunderstorm WarningOUNMajor30 min
May 24, 4:16 AM CDTSevere Thunderstorm WarningICTSedgwick, Sumner41 min
May 24, 4:32 AM CDTSevere Thunderstorm WarningICTButler, Cowley58 min
May 24, 5:17 AM CDTSevere Thunderstorm WarningICTElk, Greenwood58 min
May 24, 5:21 AM CDTFlash Flood WarningTOPMarshall, Riley114 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

Lamont, OK (KLMN), launched 00:00Z, 7.7 hours before the alert went out and 53 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, Lamont, OK at 00:00Z on 2007-05-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1762 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, Lamont, OK at 00:00Z on 2007-05-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 38 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
1762 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
1075 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
38 m²/s²
0-3 km storm-relative helicity
89 m²/s²
Significant tornado parameter
0.4
Supercell composite
2.8

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 23, 7:10 PM CDTMesoscale DiscussionSPCAtchison, Barton, Brown, Butler, Chase, Clay and 36 more35 min
May 23, 7:48 PM CDTSevere Thunderstorm WatchSPCBarton, Butler, Chase, Clay, Cloud, Dickinson and 22 more7 hr
May 23, 10:12 PM CDTMesoscale DiscussionSPCClark, Comanche, Edwards, Finney, Ford, Grant and 12 more63 min
May 23, 10:48 PM CDTTornado WatchSPCBarber, Clark, Comanche, Kiowa, Meade, Pratt and 1 more4 hr
May 23, 11:29 PM CDTMesoscale DiscussionSPCBarton, Butler, Chase, Clay, Cloud, Dickinson and 25 more91 min
May 24, 1:51 AM CDTMesoscale DiscussionSPCAtchison, Brown, Butler, Chase, Clay, Coffey and 28 more54 min
May 24, 2:06 AM CDTMesoscale DiscussionSPCBarber, Comanche, Harper, Kingman, Kiowa, Pratt and 1 more54 min
May 24, 5:19 AM CDTMesoscale DiscussionSPCAtchison, Brown, Butler, Chase, Coffey, Cowley and 16 more56 min
May 24, 10:04 AM CDTMesoscale DiscussionSPCCarter, Coal, Garvin, Jefferson, Johnston, Love and 4 more116 min
May 24, 2:49 PM CDTMesoscale DiscussionSPCBrown, Callahan, Coke, Coleman, Comanche, Concho and 18 more2 hr

Nearby

Severe Thunderstorm Watches in Kansas, 2007Severe Thunderstorm Watches in Oklahoma, 2007Every severe thunderstorm watch in 2007

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.