

000 

WWUS20 KWNS 241553

SEL2

SPC WW 241553

KSZ000-250000-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 172

NWS STORM PREDICTION CENTER NORMAN OK

1050 AM CDT TUE APR 24 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       A LARGE PART OF KANSAS



EFFECTIVE THIS TUESDAY MORNING AND EVENING FROM 1050 AM UNTIL 700

PM CDT.



TORNADOES...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 85 STATUTE

MILES EAST AND WEST OF A LINE FROM 65 MILES NORTHEAST OF HILL

CITY KANSAS TO 45 MILES SOUTH OF WICHITA KANSAS.  FOR A COMPLETE

DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE

(WOUS64 KWNS WOU2).



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.



DISCUSSION...SFC-BASED TSTMS EXPECTED TO FORM IN THE NEXT HOUR OR

TWO ALONG MERGING PACIFIC COLD FRONT/DRY LINE NOW IN CNTRL KS.

STORMS SHOULD QUICKLY BECOME SUPERCELLULAR...LIKELY EVOLVING INTO

SHORT NNE/SSW ORIENTED BANDS GIVEN CURRENT WIND PROFILES SHOWING

BACK-VEER PATTERNS IN THE VERTICAL.  GIVEN QUALITY OF MOISTURE

INFLOW...INCREASING SFC HEATING AND STRENGTHENING DEEP SHEAR...AN

ATTENDANT THREAT WILL EXIST FOR TORNADOES AND LARGE HAIL.



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 21035.





...CORFIDI

