MESOSCALE DISCUSSION 1418
   NWS STORM PREDICTION CENTER NORMAN OK
   0454 PM CDT FRI JUL 03 2009
   
   AREAS AFFECTED...NERN NV...ERN OR...SRN/CNTRL ID...NWRN UT
   
   CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY 
   
   VALID 032154Z - 032300Z
   
   ISOLD STRONG TO SEVERE STORMS WILL CONTINUE TO DEVELOP THIS
   AFTERNOON...WITH PRIMARY THREATS OF DMGG WINDS AND HEAVY RAINFALL.
   RAINFALL RATES MAY EXCEED ONE INCH AN HOUR AT TIMES. DUE TO ISOLD
   NATURE...A WW IS NOT ANTICIPATED.
   
   RELATIVELY STAGNANT PATTERN IS ONCE AGAIN FAVORABLE FOR ISOLD STRONG
   TO SEVERE STORMS THIS AFTERNOON AROUND THE PERIPHERY OF A FLATTENING
   UPPER RIDGE TO THE SOUTH AND EAST. A VORTICITY MAXIMUM NOW MOVING
   NEWD INTO NERN CA/WRN NV HAS PROVIDED FAVORABLE ASCENT FOR CLUSTERS
   OF STORMS ACROSS THE HIGHER TERRAIN OF NV/OR/ID IN COMBINATION WITH
   WELL ABOVE NORMAL PWAT/MOISTURE. MLCAPE NEAR 750 TO 1000 J/KG AND
   NEARLY STRAIGHT LINE HODOGRAPHS WILL BE SUPPORTIVE OF OCCASIONAL
   ROTATION/SPLITTING CELLS. DESPITE RELATIVELY HIGH WBZ
   HEIGHTS...MARGINAL TO SEVERE HAIL WILL BE POSSIBLE IN STRONGER
   CORES. STEEP LOW LEVEL LAPSE RATES WILL FAVOR DMGG WINDS...WITH
   OUTFLOWS ACCELERATING TOWARDS THE LOWER VALLEYS WHERE
   TEMPERATURE/DEW POINT SPREADS AND INSTABILITY ARE GREATER. DMGG WIND
   GUSTS MAY OCCUR WELL REMOVED FROM THUNDERSTORMS. GIVEN HIGH MOISTURE
   CONTENT AND SOMEWHAT WEAK FLOW...HEAVY RAINFALL WITH RATES AOA AN
   INCH AN HOUR ARE POSSIBLE.
   
   ..HURLBUT.. 07/03/2009
   
   
   ATTN...WFO...TFX...SLC...PIH...MSO...BOI...LKN...
   
   LAT...LON   40291421 39161458 39221577 39891635 40861691 41721788
               42021879 42741906 43521936 44041812 43961627 44051457
               44391286 44301161 43021159 42151220 40291421