Alert archive / Kansas / Tornado Watches in 2011

Tornado Watch 360

May 24, 201126 counties in Kansas

The Storm Prediction Center issued this tornado watch at May 24, 2011, 3:14 PM CDT for 26 counties in Kansas. It was in force for 9 hr.

The area

The outline as issued.

The facts

Issued
May 24, 2011, 3:14 PM CDT (20:14 UTC)
Expired
May 24, 2011, 11:58 PM CDT
In force
9 hr
Issued by
the Storm Prediction Center
Particularly dangerous situation
Yes
Largest hail expected
2.5 in
Strongest gust expected
60 kt
All 26 counties

Allen County, KS, Barton County, KS, Butler County, KS, Chase County, KS, Chautauqua County, KS, Cowley County, KS, Elk County, KS, Ellsworth County, KS, Greenwood County, KS, Harper County, KS, Harvey County, KS, Kingman County, KS, Labette County, KS, Lincoln County, KS, Marion County, KS, McPherson County, KS, Montgomery County, KS, Neosho County, KS, Reno County, KS, Rice County, KS, Russell County, KS, Saline County, KS, Sedgwick County, KS, Sumner County, KS, Wilson County, KS, Woodson County, KS

The radar

The Wichita radar (KICT), 35 km from the middle of the area, began a volume at 20:16 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
80%
One or more EF2 to EF5 tornadoes
60%
Ten or more severe wind reports
50%
One or more gusts of 65 knots or more
60%
Ten or more severe hail reports
80%
One or more hailstones of 2 inches or more
80%
Six or more combined severe hail and wind reports
95%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 24, 4:27 PM CDTSevere Thunderstorm WarningICTHarvey, Kingman, Reno, Sedgwick35 min
May 24, 4:42 PM CDTSevere Thunderstorm WarningICTBarton, Russell63 min
May 24, 4:45 PM CDTSevere Thunderstorm WarningICTEllsworth, McPherson, Rice, Saline60 min
May 24, 4:55 PM CDTSevere Thunderstorm WarningICTSedgwick, Sumner50 min
May 24, 4:59 PM CDTTornado WarningICTBarton31 min
May 24, 5:03 PM CDTSevere Thunderstorm WarningICTButler, Cowley, Sedgwick, Sumner57 min
May 24, 5:15 PM CDTSevere Thunderstorm WarningICTSumner45 min
May 24, 5:34 PM CDTTornado WarningICTBarton, Russell41 min
May 24, 5:38 PM CDTSevere Thunderstorm WarningICTEllsworth, Lincoln, Russell, Saline37 min
May 24, 5:39 PM CDTSevere Thunderstorm WarningICTButler, Harvey, McPherson, Marion, Reno, Rice66 min
May 24, 5:45 PM CDTSevere Thunderstorm WarningICTButler, Cowley, Elk, Greenwood60 min
May 24, 5:56 PM CDTSevere Thunderstorm WarningICTButler, Cowley, Sedgwick, Sumner64 min
May 24, 6:12 PM CDTSevere Thunderstorm WarningICTButler, Chase, Marion63 min
May 24, 6:14 PM CDTSevere Thunderstorm WarningICTChase, Greenwood, Woodson61 min
May 24, 6:14 PM CDTTornado WarningICTBarton, Russell31 min
May 24, 6:43 PM CDTTornado WarningICTBarton32 min
May 24, 6:53 PM CDTSevere Thunderstorm WarningICTButler, Cowley59 min
May 24, 7:00 PM CDTTornado WarningICTBarton, Ellsworth, Russell30 min
May 24, 7:02 PM CDTSevere Thunderstorm WarningICTChautauqua, Elk58 min
May 24, 7:08 PM CDTSevere Thunderstorm WarningICTBarton, Ellsworth, Reno, Rice52 min
May 24, 7:16 PM CDTSevere Thunderstorm WarningICTRussell29 min
May 24, 7:16 PM CDTSevere Thunderstorm WarningICTGreenwood, Woodson59 min
May 24, 7:24 PM CDTSevere Thunderstorm WarningICTChautauqua, Elk, Montgomery66 min
May 24, 7:30 PM CDTTornado WarningICTBarton, Ellsworth, Lincoln, Russell30 min
May 24, 7:33 PM CDTSevere Thunderstorm WarningICTChase57 min
May 24, 7:36 PM CDTTornado WarningICTRice24 min
May 24, 7:43 PM CDTSevere Thunderstorm WarningICTAllen, Neosho, Wilson, Woodson47 min
May 24, 7:45 PM CDTSevere Thunderstorm WarningICTGreenwood45 min
May 24, 7:50 PM CDTTornado WarningICTChautauqua, Montgomery25 min
May 24, 7:57 PM CDTTornado WarningICTEllsworth, Lincoln33 min
May 24, 8:00 PM CDTSevere Thunderstorm WarningICTEllsworth, McPherson, Rice, Saline60 min
May 24, 8:12 PM CDTSevere Thunderstorm WarningICTLabette63 min
May 24, 8:18 PM CDTTornado WarningICTChautauqua, Elk, Montgomery, Wilson27 min
May 24, 8:20 PM CDTSevere Thunderstorm WarningICTHarper, Kingman25 min
May 24, 8:27 PM CDTSevere Thunderstorm WarningICTMontgomery24 min
May 24, 8:30 PM CDTSevere Thunderstorm WarningICTKingman, Reno, Sedgwick45 min
May 24, 8:39 PM CDTSevere Thunderstorm WarningICTNeosho47 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 12:00Z, 8.2 hours before the alert went out and 150 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 12:00Z on 2011-05-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 434 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 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 12:00Z on 2011-05-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 375 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
434 J/kg
Mixed-layer CIN
-401 J/kg
Mixed-layer LCL
684 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
375 m²/s²
0-3 km storm-relative helicity
420 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

243 
WWUS20 KWNS 242015
SEL0  
SPC WW 242015
KSZ000-250400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 360
NWS STORM PREDICTION CENTER NORMAN OK
315 PM CDT TUE MAY 24 2011

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF 

       CENTRAL AND SOUTHEAST KANSAS

EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 315 PM UNTIL
1100 PM CDT.

...THIS IS A PARTICULARLY DANGEROUS SITUATION...

DESTRUCTIVE TORNADOES...LARGE HAIL TO 2.5 INCHES IN DIAMETER...
THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE
POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 55 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 40 MILES NORTH NORTHWEST OF
MEDICINE LODGE KANSAS TO 20 MILES EAST NORTHEAST OF CHANUTE
KANSAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED
WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

OTHER WATCH INFORMATION...CONTINUE...WW 354...WW 355...WW
356...WW 357...WW 358...WW 359...

DISCUSSION...SUPERCELLS OVER NWRN OK ARE EXPECTED TO SPREAD RAPIDLY
NEWD INTO AREA THIS AFTERNOON WITH ADDITIONAL DEVELOPMENT POSSIBLE E
OF SURFACE LOW ALONG DRYLINE AND RETREATING WARM FRONT/OUTFLOW
BOUNDARY.  WARM SECTOR AIR MASS IS QUITE MOIST WITH A DECREASING CAP
AND MLCAPE OF 3000-4000 J/KG.  WHEN COUPLED WITH RAPIDLY
STRENGTHENING LOW AND DEEP-LAYER SHEAR...ENVIRONMENT WILL SUPPORT
THE EVOLUTION OF LONG-LIVED SUPERCELLS CAPABLE OF LARGE HAIL AND
TORNADOES...SOME OF WHICH COULD BE LONG-TRACKED AND STRONG/VIOLENT.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 24035.


...MEAD

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 24, 2:24 AM CDTMesoscale DiscussionSPCCheyenne, Decatur, Ellis, Gove, Graham, Hodgeman and 12 more96 min
May 24, 2:42 AM CDTSevere Thunderstorm WatchSPCCheyenne, Decatur, Ellis, Gove, Graham, Greeley and 15 more4 hr
May 24, 6:21 AM CDTMesoscale DiscussionSPCBarton, Chase, Clay, Cloud, Dickinson, Edwards and 25 more54 min
May 24, 6:51 AM CDTSevere Thunderstorm WatchSPCBarton, Brown, Butler, Chase, Clay, Cloud and 37 more5 hr
May 24, 9:18 AM CDTMesoscale DiscussionSPCAllen, Anderson, Atchison, Bourbon, Chase, Clay and 28 more87 min
May 24, 10:37 AM CDTMesoscale DiscussionSPCCheyenne, Rawlins, Sherman, Thomas83 min
May 24, 12:59 PM CDTMesoscale DiscussionSPCBarton, Edwards, Ellis, Ellsworth, Finney, Ford and 26 more91 min
May 24, 1:27 PM CDTTornado WatchSPCBarber, Clark, Comanche, Edwards, Ellis, Finney and 30 more6 hr
May 24, 2:35 PM CDTMesoscale DiscussionSPCBarber, Barton, Butler, Chase, Chautauqua, Coffey and 27 more85 min
May 24, 5:03 PM CDTMesoscale DiscussionSPCClay, Cloud, Dickinson, Geary, Jewell, Lincoln and 11 more57 min
May 24, 5:19 PM CDTTornado WatchSPCAnderson, Brown, Clay, Cloud, Coffey, Dickinson and 23 more7 hr

Nearby

Tornado Watches in Kansas, 2011Every tornado watch in 2011

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.