

065 

WWUS20 KWNS 291736

SEL8

SPC WW 291736

KYZ000-TNZ000-VAZ000-010200-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 48

NWS STORM PREDICTION CENTER NORMAN OK

1135 AM CST WED FEB 29 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       CENTRAL AND EASTERN KENTUCKY

       TENNESSEE

       FAR WESTERN VIRGINIA



EFFECTIVE THIS WEDNESDAY MORNING AND EVENING FROM 1135 AM UNTIL

800 PM CST.



TORNADOES...HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 75 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 25 MILES SOUTH SOUTHWEST OF

DYERSBURG TENNESSEE TO 30 MILES EAST SOUTHEAST OF JACKSON

KENTUCKY.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8).



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 45...WW 46...WW 47...



DISCUSSION...BROKEN...PRE-FRONTAL BAND OF TSTMS /INCLUDING

SUPERCELLS/ OVER CNTRL KY IS EXPECTED TO INCREASE IN COVERAGE AND

INTENSITY THIS AFTERNOON ACROSS WATCH AREA...AS LARGE-SCALE FORCING

FOR ASCENT INCREASES AHEAD OF MIDLEVEL IMPULSE APPROACHING THE MID

MS/LOWER OH VALLEYS.  WIDESPREAD CLOUDS AND WEAK LAPSE RATES WILL

LIMIT AIR MASS DESTABILIZATION THROUGH THIS AFTERNOON WITH MLCAPE OF

GENERALLY LESS THAN 1000-1500 J/KG.  HOWEVER...GIVEN THE STRONG LOW-

AND DEEP-LAYER SHEAR...THE SETUP WILL REMAIN FAVORABLE FOR

SUPERCELLS AND BOWING STRUCTURES CAPABLE OF TORNADOES /SOME STRONG/

AND POTENTIALLY WIDESPREAD DAMAGING WINDS.



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

SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 65 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

400. MEAN STORM MOTION VECTOR 25050.





...MEAD

