MESOSCALE DISCUSSION 2016
   NWS STORM PREDICTION CENTER NORMAN OK
   0602 PM CDT MON SEP 14 2009
   
   AREAS AFFECTED...UT
   
   CONCERNING...SEVERE THUNDERSTORM WATCH 741...
   
   VALID 142302Z - 150000Z
   
   THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 741
   CONTINUES.
   
   SVR TSTM WATCH 741 IS SET TO EXPIRE AT 00Z.  LOCAL WFO EXTENSION OF
   THE WW MAY BE POSSIBLE.
   
   WATER VAPOR IMAGERY SHOWS A POTENT PV-ANOMALY ROTATING NEWD ACROSS
   THE SALT FLATS/DESERTS OF NWRN UT AND IS AIDING IN THE RECENT
   INTENSIFICATION OF TSTMS OVER THE GREAT SALT LAKE.  THIS NARROW LINE
   OF STRONG CONVECTION WILL TRANSLATE ENE ACROSS THE I-15 CORRIDOR AND
   INTO THE NRN WASATCH FRONT/MOUNTAINS AND THE CACHE VLY THROUGH 00Z. 
   SOME WEAKENING IS LIKELY AS THE ACTIVITY BECOMES REMOVED FROM THE
   SLIGHTLY STRONGER BUOYANCY NOTED INVOF THE GREAT SALT LAKE. 
   BUT...STRONG/SVR WINDS COULD OCCUR.
   
   MEANWHILE...WARM CONVEYOR ASSOCD WITH THE NV UPR SYSTEM CONTINUES TO
   SPREAD SLOWLY EWD ACROSS THE ERN UINTA BASIN...SAN RAFAEL SWELL AND
   CNTRL MOUNTAINS.  EMBEDDED WITHIN THIS ENHANCED SLY MID-LVL FLOW
   WERE SEVERAL SUSTAINED ROTATING CELLS CAPABLE OF LARGE HAIL AND DMGG
   WIND GUSTS.  THIS ACTIVITY WILL PROBABLY WEAKEN GRADUALLY THROUGH
   EARLY THIS EVE BEFORE REACHING THE CO/WY BORDERS AS THE PRIMARY
   FORCING FOR ASCENT ROTATES NWD TOWARD WRN WY/ERN ID.
   
   ..RACY.. 09/14/2009
   
   
   ATTN...WFO...SLC...
   
   LAT...LON   38521323 40221255 41811322 41771134 40921121 40671030
               39701019 38581042 37961065 37691118 37781306 38521323