MESOSCALE DISCUSSION 1360
   NWS STORM PREDICTION CENTER NORMAN OK
   0608 PM CDT SUN JUN 20 2004
   
   AREAS AFFECTED...CENTRAL/ERN CO...WRN KS...SMALL PART OF SWRN NEB
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 499...501...
   
   VALID 202308Z - 210115Z
   
   TSTMS HAVE INCREASED GREATLY IN COVERAGE OVER CO FROM FOOTHILLS EWD
   ALMOST TO KS BORDER...SOME OF WHICH WILL MOVE INTO KS OVER NEXT 2-3
   HOURS WITH POTENTIAL FOR LARGE HAIL AND DAMAGING GUSTS.  VERTICAL
   SHEAR PROFILES WILL REMAIN FAVORABLE FOR BOTH BOW ECHOES AND
   SUPERCELLS ACROSS PRECONVECTIVE ENVIRONMENTS IN THESE WWS...WITH 0-6
   KM AGL SHEARS RANGING FROM 45-60 KT.  SEVERAL CANDIDATES FOR
   EVENTUAL NOCTURNAL MCS EXIST ATTM...
   1. LINE OF CONVECTION MOVING SEWD FROM NERN CO TOWARD MCK-GLD
   CORRIDOR...
   2. STORMS OVER PORTIONS PUEBLO/CROWLEY COUNTIES CO AS OF
   23Z...EVOLVING INTO BOW ECHO AND MOVING TOWARD LHX/LAA CORRIDOR...
   3. BROKEN ARC OF TSTMS FROM BACA COUNTY CO SWD INTO PORTIONS OK/TX
   PANHANDLES...
   4. NEWLY FORMING BAND OF CONVECTION FROM WALLACE COUNTY KS SWWD
   ACROSS KIOWA COUNTY CO.
   
   FCST POSITION/ORIENTATION OF LLJ AFTER 00Z FAVORS ACTIVITY CURRENTLY
   CLOSEST TO WRN KS...WHERE LOW LEVEL MOIST ADVECTION ABOVE BOUNDARY
   LAYER WILL COMBINE WITH 8-9 DEG C/KM MIDLEVEL LAPSE RATES TO YIELD
   AROUND 3000 J/KG ELEVATED MUCAPE.
   
   ..EDWARDS.. 06/20/2004
   
   
   ATTN...WFO...LBF...GLD...PUB...BOU...GID...DDC...AMA...
   
   37000208 37000503 40990515 40990204 
   
   36990208 40340232 40339969 37039942