MESOSCALE DISCUSSION 0373
   NWS STORM PREDICTION CENTER NORMAN OK
   0342 PM CDT THU APR 02 2009
   
   AREAS AFFECTED...AL...SRN MIDDLE TN...FL PANHANDLE
   
   CONCERNING...TORNADO WATCH 107...108...
   
   VALID 022042Z - 022145Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 107...108...CONTINUES.
   
   DAMAGING WINDS...MARGINAL HAIL AND PERHAPS AN ISOLATED TORNADO
   SHOULD REMAIN THE PRIMARY NEAR-TERM THREATS WITHIN EMBEDDED BROKEN
   LINE SEGMENTS. HOWEVER...STRENGTHENING LOW-LEVEL FLOW MAY RESULT IN
   INCREASING TORNADIC POTENTIAL WITHIN WW 107 AND WRN PORTIONS OF WW
   108...ESPECIALLY WITH ANY SEMI-DISCRETE CELLS.
   
   AS OF 2035Z...RADAR IMAGERY DEPICTED SEVERAL BROKEN LINE SEGMENTS
   ACROSS WRN AL...WITH ADDITIONAL ACTIVITY DEVELOPING OVER THE WRN FL
   PANHANDLE/SERN AL ATOP REMNANT OUTFLOW BOUNDARY LEFT IN THE WAKE OF
   MORNING/EARLY AFTERNOON MCS. ALTHOUGH SOME CLOUD BREAKS EXIST IN
   CNTRL AL...EXTENSIVE CONVECTIVE DEBRIS AND EARLIER RAINFALL HAS
   LIMITED TEMPERATURES TO THE MIDDLE 60S TO MIDDLE 70S ACROSS MOST OF
   CNTRL/ERN AL...WITH SURFACE DEW POINTS IN THE LOWER 60S. MODIFIED
   18Z BMX/BNA RAOBS AND RUC FORECAST SOUNDINGS SUGGEST MLCAPES WILL
   REMAIN MODEST...FROM 600 TO 1200 J/KG. EVEN SO...VERY STRONG
   DEEP-LAYER SHEAR WILL PROMOTE A CONTINUED ORGANIZED SEVERE THREAT.
   IN ADDITION...AS AR CYCLONE CONTINUES TO DEEPEN OVER THE NEXT
   SEVERAL HOURS...LOW-LEVEL FLOW SHOULD STRENGTHEN /ALREADY EVIDENCED
   IN RECENT VWP TRENDS/. THIS WILL ENLARGE HODOGRAPHS AND OVERALL
   TORNADIC POTENTIAL THROUGH EARLY EVENING.
   
   ..GRAMS.. 04/02/2009
   
   
   ATTN...WFO...TAE...OHX...BMX...HUN...MOB...
   
   LAT...LON   35788627 34168611 32058624 31378589 31488484 30978423
               30188456 29718502 29928534 30358633 30518773 31508762
               32468778 34218784 35538776 35858725 35788627