MESOSCALE DISCUSSION 0591
   NWS STORM PREDICTION CENTER NORMAN OK
   0241 PM CDT TUE APR 26 2011
   
   AREAS AFFECTED...EASTERN AR/WESTERN TN/NORTHERN MS TO THE MO
   BOOTHEEL/WESTERN KY/FAR SOUTHERN IL
   
   CONCERNING...SEVERE POTENTIAL...TORNADO WATCH LIKELY 
   
   VALID 261941Z - 262115Z
   
   CLOSELY MONITORING TRENDS FOR A TORNADO WATCH ISSUANCE ACROSS
   EASTERN AR INTO WESTERN TN/NORTHERN MS...A WATCH MAY BE NEEDED
   WITHIN THE HOUR.
   
   OVER THE PAST HOUR...VISIBLE SATELLITE REFLECTS DEEPENING CUMULIFORM
   DEVELOPMENT ALONG THE SOUTHWEST-NORTHEAST ORIENTED FRONTAL ZONE FROM
   SOUTH-CENTRAL AR INTO WESTERN TN/WESTERN KY...WITH INCIPIENT TSTM
   DEVELOPMENT RECENTLY NOTED EAST OF LITTLE ROCK. WITH STRONG HEATING
   /ALREADY NEAR 80F OR ABOVE/ OCCURRING ALONG/SOUTHEAST OF THE SURFACE
   BOUNDARY...MODIFICATIONS TO A SPECIAL 18Z LITTLE ROCK OBSERVED RAOB
   SUGGEST LITTLE CINH REMAINS. AS LARGE SCALE FORCING FOR ASCENT
   INCREASES LATER TODAY...STRONG/SEVERE TSTMS SHOULD STEADILY INCREASE
   INTO THIS EVENING. WHILE THE MOST SIGNIFICANT/WIDESPREAD
   SEVERE/TORNADO THREAT MAY NOT ARRIVE UNTIL THIS EVENING /AS A LOW
   LEVEL JET BEGINS TO MARKEDLY INCREASE/...INCREASING CONVECTIVE
   TRENDS IN THE SHORT TERM WILL NECESSITATE A TORNADO WATCH ISSUANCE.
   
   ..GUYER.. 04/26/2011
   
   
   ATTN...WFO...OHX...PAH...MEG...JAN...LZK...
   
   LAT...LON   34979191 37388892 36878799 34198882 32999157 33999186
               34979191