

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

