

098 

WWUS20 KWNS 270355

SEL5

SPC WW 270355

KSZ000-MOZ000-271100-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 955

NWS STORM PREDICTION CENTER NORMAN OK

955 PM CST FRI DEC 26 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       EAST CENTRAL AND SOUTHEAST KANSAS

       WESTERN MISSOURI



EFFECTIVE THIS FRIDAY NIGHT AND SATURDAY MORNING FROM 955 PM

UNTIL 500 AM CST.



TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS

TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 75 STATUTE

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

CITY MISSOURI TO 60 MILES SOUTHWEST OF CHANUTE KANSAS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU5).



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...ISOLATED THUNDERSTORMS ARE BEGINNING TO DEVELOP IN

SHORT BANDS FROM ERN KS INTO WRN MO.  THIS CONVECTION IS LIKELY

ROOTED JUST ABOVE THE SURFACE AND ALONG THE W EDGE OF THE RICHEST

LOW-LEVEL MOISTURE...BUT THE THREAT FOR SURFACE-BASED STORMS WILL

INCREASE AS DESTABILIZATION AND ASCENT CONTINUE OVERNIGHT WITH THE

APPROACH OF A DEEP MID LEVEL TROUGH FROM CO/NM.  VERTICAL SHEAR IS

FAVORABLE FOR SUPERCELLS WITH THE INITIAL PRE-FRONTAL

CONVECTION...AND THESE STORMS WILL BE CAPABLE OF PRODUCING A COUPLE

OF TORNADOES AND DAMAGING WINDS...AS WELL AS ISOLATED LARGE HAIL.

ADDITIONAL STORMS WILL LIKELY FORM LATER TONIGHT AND FARTHER TO THE

W IN KS ALONG A COLD FRONT...AND EVOLVE INTO A LINE WITH EMBEDDED

BOW/SUPERCELL STRUCTURES.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND

GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450.

MEAN STORM MOTION VECTOR 23045.





...THOMPSON

