MESOSCALE DISCUSSION 0574
   NWS STORM PREDICTION CENTER NORMAN OK
   0308 PM CDT MON APR 25 2011
   
   AREAS AFFECTED...MUCH OF AR/NORTHERN LA
   
   CONCERNING...SEVERE POTENTIAL...WATCH NEEDED SOON 
   
   VALID 252008Z - 252045Z
   
   AN ADDITIONAL TORNADO WATCH WILL BE ISSUED SOON FOR NORTHERN/CENTRAL
   PORTIONS OF AR AND NORTHERN LA.
   
   THE AIRMASS CONTINUES TO DESTABILIZE ALONG/SOUTH OF A MODIFYING
   WEST-EAST OUTFLOW BOUNDARY ACROSS AR AMID A REGIONAL OF STRONG
   SURFACE PRESSURE FALLS...WITH ADDITIONAL DESTABILIZATION /ALBEIT
   MODEST/ EXPECTED INTO NORTHERN AR AS THE AFOREMENTIONED BOUNDARY
   MIXES/SHIFTS NORTHWARD AS AN EFFECTIVE WARM FRONT. AS SAMPLED BY THE
   18Z LITTLE ROCK OBSERVED RAOB...STRONG SHEAR WILL CONTINUE TO
   SUPPORT A THREAT FOR TORNADOES /PERHAPS SOME STRONG/...IN ADDITION
   TO SEVERE HAIL/DAMAGING WINDS.
   
   ..GUYER.. 04/25/2011
   
   
   ATTN...WFO...MEG...JAN...LZK...SHV...TSA...
   
   LAT...LON   35719429 36389336 36239127 33909123 32309223 32359372
               33749308 35369283 35719429