MESOSCALE DISCUSSION 1331
   NWS STORM PREDICTION CENTER NORMAN OK
   0746 PM CDT MON JUN 20 2011
   
   AREAS AFFECTED...ERN KS/NEB...WRN MO/IA
   
   CONCERNING...TORNADO WATCH 524...526...
   
   VALID 210046Z - 210145Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 524...526...CONTINUES.
   
   NEW TORNADO WATCH WILL LIKELY BE ISSUED BETWEEN 01-02Z TO INCLUDE
   AREAS E OF WW 524/S OF WW 526 IN ERN KS/WRN MO.
   
   NEARLY 400 MI LONG QLCS EXTENDS FROM SERN NEB TO N-CNTRL OK. NEB/KS
   PORTION OF THE LINE HAS RECENTLY ACCELERATED EWD AHEAD OF COLD
   FRONT...LIKELY A RESULT OF STRENGTHENING COLD POOL AND OVERSPREADING
   MID-LEVEL DCVA. 00Z OAX/TOP RAOBS SAMPLE THE VERY UNSTABLE AIR MASS
   DOWNSTREAM OF THE QLCS...ALONG WITH NEARLY UNIDIRECTIONAL STRONG
   DEEP-LAYER SLY FLOW WHICH WILL REMAIN FAVORABLE FOR EWD MAINTENANCE
   OF THE QLCS. AS THE LLJ STRENGTHENS THROUGH THE EVENING...EMBEDDED
   BOWING SEGMENTS /MOST LIKELY ON THE NRN PORTION OF THE QLCS/ WILL
   YIELD THE POTENTIAL FOR SIGNIFICANT DAMAGING WINDS AND ISOLATED
   TORNADOES.
   
   ..GRAMS.. 06/21/2011
   
   
   ATTN...WFO...SGF...DMX...EAX...TSA...FSD...OAX...TOP...ICT...
   
   LAT...LON   37059684 37999650 39629626 41069652 41629673 42019644
               42209599 42229527 42029440 40609384 39789377 38449406
               36989478 37059684