Tornado Watch until 5:00pm April 11, 2011

URGENT - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH NUMBER 128
   NWS STORM PREDICTION CENTER NORMAN OK
   1030 AM CDT MON APR 11 2011
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   TORNADO WATCH FOR PORTIONS OF 
   
          PARTS OF EASTERN ARKANSAS
          PARTS OF SOUTH CENTRAL KENTUCKY
          MUCH OF NORTHERN MISSISSIPPI
          PARTS OF CENTRAL AND MIDDLE TENNESSEE
   
   EFFECTIVE THIS MONDAY MORNING AND AFTERNOON FROM 1030 AM UNTIL
   500 PM CDT.
   
   TORNADOES...HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND
   GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
   AREAS.
   
   THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 90 STATUTE
   MILES EAST AND WEST OF A LINE FROM 25 MILES SOUTHEAST OF
   MONTICELLO ARKANSAS TO 60 MILES EAST NORTHEAST OF BOWLING GREEN
   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.
   
   DISCUSSION...STRONG S/WV TROUGH AND ASSOCIATED WIND FIELD ROTATING
   EWD ACROSS LWR MS VALLEY THIS AFTERNOON DEVELOPING A SURFACE WAVE ON
   FRONTAL ZONE SRN AR.  STRONG HEATING WILL INCREASE INSTABILITY EWD
   AHEAD OF ONGOING CONVECTION ACROSS THE WATCH.  THUNDERSTORMS
   INCREASING ACROSS CENTRAL SRN AR WILL MOVE RAPIDLY NEWD AHEAD OF THE
   SURFACE LOW WITH AN ENHANCED WIND PROFILE SUPPORTING BOTH DAMAGING
   WINDS AND POSSIBLE TORNADOES THRU THE AFTERNOON.
   
   AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
   SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
   WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
   500. MEAN STORM MOTION VECTOR 24040.