MESOSCALE DISCUSSION 0423
   NWS STORM PREDICTION CENTER NORMAN OK
   0124 AM CDT FRI APR 10 2009
   
   AREAS AFFECTED...FAR NORTHEAST LA AND NORTHERN/CENTRAL MS INTO
   AL/MIDDLE TN
   
   CONCERNING...TORNADO WATCH 127...
   
   VALID 100624Z - 100800Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 127 CONTINUES.
   
   TORNADO WATCH 127 CONTINUES UNTIL 10Z...WITH A RISK FOR ISOLATED
   TORNADOES AND DAMAGING WINDS...ALONG WITH SEVERE HAIL. AN ADDITIONAL
   WATCH MAY BE NEEDED WITHIN THE HOUR FOR THE REMAINDER OF NORTHERN MS
   INTO THE ADJACENT PORTIONS OF AL.
   
   A STRONG/SEVERE 100 MILE LONG MODESTLY BROKEN MCS WITH EMBEDDED
   SUPERCELLS CONTINUES TO QUICKLY RACE EAST-NORTHEASTWARD TOWARD THE
   I-55 CORRIDOR IN NORTHERN MS...WHILE A MORE ISOLATED SUPERCELL WITH
   PRIOR TORNADIC HISTORY CONTINUES TO PROGRESS EASTWARD NEAR I-20 IN
   NORTHEAST LA AS OF 0615Z. EVEN WITH A MARGINAL DOWNSTREAM
   AIRMASS...EVOLVING BOW/LINEAR SYSTEM SHOULD CONTINUE TO
   ORGANIZE/RACE NORTHEASTWARD WITH A DAMAGING WIND/SOME HAIL RISK
   ACROSS NORTHEAST MS/NORTHWEST AL AND PERHAPS THE SOUTHERN PORTIONS
   OF MIDDLE TN...ALTHOUGH THIS MCS MAY BECOME INCREASINGLY BASED ATOP
   A COOL/MODESTLY MOIST BOUNDARY LAYER. THE PRIMARY TORNADO POTENTIAL
   WILL LIKELY REMAIN WITH THE SOUTHERN PORTION OF THE EVOLVING LINE
   AND/OR ANY QUASI-DISCRETE SUPERCELLS ACROSS FAR NORTHEAST LA INTO
   NORTH CENTRAL MS...IN CLOSER PROXIMITY TO A SOMEWHAT RICHER LOW
   LEVEL MOISTURE INFLUX /60S F SFC DEWPOINTS/ AMIDST STRENGTHENING
   FLOW AROUND 1 KM/0-1 KM SRH.
   
   ..GUYER.. 04/10/2009
   
   
   ATTN...WFO...OHX...BMX...HUN...MEG...JAN...
   
   LAT...LON   35178939 35428838 35038725 33358768 32129009 32469183
               33339059 35178939