MESOSCALE DISCUSSION 1084
   NWS STORM PREDICTION CENTER NORMAN OK
   0229 PM CDT FRI JUN 04 2004
   
   AREAS AFFECTED...ERN CO...ERN WY...SW SD...WRN NEB...EXTREME WRN
   KS...NE NM AND THE WRN OK AND TX PANHANDLES
   
   CONCERNING...SEVERE THUNDERSTORM POTENTIAL 
   
   VALID 041929Z - 042130Z
   
   THUNDERSTORMS EXPECTED TO INTENSIFY AS THEY MOVE EWD OFF THE HIGHER
   TERRAIN AND INTO THE MOIST AXIS OVER THE HIGH PLAINS. ISOLATED
   DAMAGING AND HAIL WILL BE THE MAIN THREATS. WW WILL 
   LIKELY BE NEEDED FOR PARTS OF THIS AREA WITHIN THE NEXT HOUR
   OR SO.
   
   HIGH BASED STORMS CONTINUE DEVELOPING OVER THE HIGHER TERRAIN OF
   NM...CO AND WY. A LEE SURFACE TROUGH EXTENDS E OF THIS ACTIVITY FROM
   EXTREME ERN WY THROUGH ERN CO AND NERN NM. EAST OF THIS
   BOUNDARY...SELY BOUNDARY LAYER FLOW WILL MAINTAIN AN AXIS OF RICHER
   LOW LEVEL MOISTURE WITH DEWPOINTS GENERALLY IN THE MID 50S. LATEST
   OBJECTIVE ANALYSIS SHOWS THE ATMOSPHERE HAS ALREADY BECOME
   MODERATELY UNSTABLE E OF THE LEE TROUGH. STEEP LAPSE RATES AND
   STRONG SURFACE HEATING ARE SUPPORTING AN AXIS OF MLCAPE FROM 1500 TO
   2000 J/KG. SSELY BOUNDARY LAYER FLOW WILL PERSIST E OF LEE TROUGH
   UNDERNEATH A BROAD FETCH OF MODEST NWLY FLOW ALOFT. THIS WILL
   CONTRIBUTE TO VEERING WIND PROFILES AND DEEP LAYER SHEAR FROM 35 TO
   40 KT...SUFFICIENT FOR SUPERCELLS. STORMS SHOULD GENERALLY BE HIGH
   BASED...BUT SHOULD INTENSIFY WITH INCREASING THREAT FOR ISOLATED
   DAMAGING WIND AND LARGE HAIL AS THEY DEVELOP EWD INTO THE AXIS OF
   STRONGER INSTABILITY.
   
   ..DIAL.. 06/04/2004
   
   
   ATTN...WFO...LBF...DDC...UNR...GLD...AMA...PUB...BOU...CYS...ABQ...
   
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