MESOSCALE DISCUSSION 0511
   NWS STORM PREDICTION CENTER NORMAN OK
   0200 PM CDT MON APR 16 2007
   
   AREAS AFFECTED...CNTRL/SRN UT  AND WRN CO
   
   CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY 
   
   VALID 161900Z - 162100Z
   
   LATEST WATER VAPOR IMAGERY SHOWS THE CENTER OF AN UPR LOW OVER NWRN
   AZ WITH SEVERAL SHORTWAVE TROUGHS SPINNING AROUND THE LOW IN THE GRT
   BASIN REGION.  ONE SUCH IMPULSE WAS MOVING NWWD VCNTY THE FOUR
   CORNERS REGION AND HAS BEEN IMPETUS FOR INCREASING TSTMS OVER THE
   HIGHER TERRAIN OF ECNTRL/SERN UT AND WRN CO.  H5 TEMPERATURES AROUND
   MINUS 20 DEG C...HEATING AND LARGE SCALE ASCENT WILL CONTINUE TO BE
   FAVORABLE FOR TSTMS THROUGH EARLY EVE.  TSTMS WILL MOVE OFF THE
   HIGHER TERRAIN TO THE WNW AND GIVEN DEEP...RELATIVELY DRY SUB-CLOUD
   LAYER...SVR/DAMAGING WINDS MAY OCCUR ALONG WITH HAIL IN THE STRONGER
   STORMS.
   
   ..RACY.. 04/16/2007
   
   
   ATTN...WFO...GJT...SLC...
   
   39391207 39640930 38030844 37320960 37491236