MESOSCALE DISCUSSION 1068
   NWS STORM PREDICTION CENTER NORMAN OK
   1029 PM CDT THU JUN 11 2009
   
   AREAS AFFECTED...MIDDLE/EASTERN TN
   
   CONCERNING...TORNADO WATCH 383...
   
   VALID 120329Z - 120430Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 383 CONTINUES.
   
   TORNADO WATCH 383 CONTINUES FOR PORTIONS OF MIDDLE/EASTERN TN UNTIL
   05Z...WITH POTENTIAL FOR DAMAGING WINDS/ISOLATED TORNADOES.
   
   EXTENSIVE CONVECTIVE LINE HAS CONGEALED OVER THE PAST HOUR IN A
   WEST-EAST FASHION ACROSS NORTHERN TN NORTH OF I-40. WITH THIS
   ACTIVITY...MAIN THREAT SHOULD CONTINUE TO TRANSITION TO HEAVY
   RAIN...AND AN ISOLATED DAMAGING WIND THREAT WITH SMALL SCALE SURGING
   BOWS. FARTHER SOUTH...MAIN POTENTIAL FOR A TORNADO OR TWO WILL
   CONTINUE WITH MORE ISOLATED STORMS ACROSS SOUTHERN TN...WELL AHEAD
   OF THE AFOREMENTIONED CONVECTIVE LINE. A STEADY UNSTABLE INFLUX FROM
   THE SOUTHWEST....AND MODEST SOUTHWESTERLY FLOW IN THE BOUNDARY LAYER
   WITH AROUND 125-150 MS/S2 OF 0-1 KM SRH PER 00Z NASHVILLE RAOB AND
   MORE RECENT REGIONAL WSR-88D VWP DATA FROM MRX/HTX/OHX...WILL
   CONTINUE TO SUPPORT UPDRAFT ROTATION/SUPERCELLS ACROSS SOUTHERN TN
   WITH AN ATTENDANT ISOLATED TORNADO THREAT.
   
   ..GUYER.. 06/12/2009
   
   
   ATTN...WFO...MRX...JKL...LMK...OHX...HUN...
   
   LAT...LON   36518776 36698570 36768358 35058418 35388755 36518776