MESOSCALE DISCUSSION 1101
   NWS STORM PREDICTION CENTER NORMAN OK
   0742 PM CDT SAT JUN 13 2009
   
   AREAS AFFECTED...NERN CO...CNTRL/SERN WY...WRN NEB PANHANDLE
   
   CONCERNING...TORNADO WATCH 397...
   
   VALID 140042Z - 140145Z
   
   THE SEVERE WEATHER THREAT FOR TORNADO WATCH 397 CONTINUES.
   
   CURRENT CONVECTIVE TRENDS SUGGEST GREATEST SEVERE THREAT HAS EVOLVED
   INTO AN ARCING PATTERN FROM ALONG THE SERN WY/NEB PANHANDLE BORDER
   BACK TOWARDS THE NRN DENVER METRO AREA. ENVIRONMENT INVOF THE
   ONGOING CONVECTION AND DOWNSTREAM REMAINS FAVORABLE FOR ROTATING
   STORMS PRODUCING SEVERE HAIL AND LOCALIZED DOWNBURSTS WITH EFFECTIVE
   SHEAR AROUND 50 KT /PER AREA PROFILERS AND RAOBS/. MODIFIED 00Z
   DNR/LBF RAOBS SUGGEST MINIMAL LOW-LEVEL CAPE MAY REMAIN DETRIMENTAL
   TO A MORE ROBUST TORNADO THREAT. NEVERTHELESS...AN AXIS OF HIGHER
   LOW-LEVEL THETA-E /COMPRISED OF SURFACE DEW POINTS FROM THE MIDDLE
   TO UPPER 50S/ AND SUBSTANTIAL VEERING OF THE LOW-LEVEL FLOW SHOULD
   ENHANCE POTENTIAL FOR AN ISOLATED TORNADO OR TWO ALONG THE I-76
   CORRIDOR OF THE NERN CO PLAINS.
   
   ..GRAMS.. 06/14/2009
   
   
   ATTN...WFO...LBF...UNR...GLD...PUB...BOU...CYS...RIW...
   
   LAT...LON   39470548 40300477 40610438 41360432 42080469 42430640
               42470773 42860811 43410794 43530656 43520476 43250366
               42700307 41910255 40890214 40240208 39640243 38770322
               38570407 38620490 39290530 39470548