MESOSCALE DISCUSSION 2082
   NWS STORM PREDICTION CENTER NORMAN OK
   0205 PM CDT MON AUG 29 2011
   
   AREAS AFFECTED...PARTS OF THE CNTRL HIGH PLAINS
   
   CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY 
   
   VALID 291905Z - 292030Z
   
   ALTHOUGH TSTM COVERAGE SHOULD BECOME SCATTERED TO NUMEROUS THIS
   AFTERNOON...THERMODYNAMIC/KINEMATIC PARAMETERS APPEAR ONLY
   MARGINALLY FAVORABLE FOR SEVERE TSTMS. THE PROBABILITY OF A WW
   ISSUANCE BY 21Z IS 20 PERCENT.
   
   FORCED ASCENT ASSOCIATED WITH A MID/UPPER-LEVEL IMPULSE CROSSING ERN
   WY HAS RESULTED IN SHOWERS AND TSTMS BLOSSOMING ALONG THE LEE OF THE
   FRONT RANGE IN SERN WY...WHILE A REMNANT MCV OVER THE NEB PANHANDLE
   HAS AIDED IN TSTMS INTENSIFYING ALONG THE NEB/CO BORDER. ALTHOUGH
   LOW-LEVEL MOISTURE IS RATHER HIGH LEADING TO PW VALUES AROUND 200
   PERCENT OF NORMAL...ABUNDANT CLOUDINESS ASSOCIATED WITH THE LEAD MCV
   AND EARLY AFTERNOON TIMING OF THE UPSTREAM IMPULSE WILL MITIGATE
   MORE ROBUST SURFACE HEATING. AIR MASS APPEARS TO BE ONLY MODESTLY
   UNSTABLE GIVEN RELATIVELY POOR MID-LEVEL LAPSE RATES SAMPLED BY THE
   12Z RAOB AND RECENT ACARS DATA IN DENVER. MID-LEVEL WLYS ARE
   MODERATE /AROUND 20-25 KT AT 4 TO 6 KM AGL AT MEDICINE BOW WY
   PROFILER/...BUT STRONGLY VEERING WITH HEIGHT AND SHOULD PROVE
   FAVORABLE FOR A FEW CLUSTERS AND BRIEF SUPERCELL STRUCTURES. THIS
   SETUP SHOULD YIELD A FEW SPORADIC MARGINALLY SEVERE HAIL/WIND
   REPORTS AND PERHAPS EVEN A TORNADO GIVEN THE RICHNESS OF BOUNDARY
   LAYER MOISTURE.
   
   ..GRAMS.. 08/29/2011
   
   
   ATTN...WFO...LBF...UNR...GLD...PUB...BOU...CYS...
   
   LAT...LON   41080543 42140545 43010541 43540497 43480422 42980346
               41760238 40850195 39880183 39280225 39160349 39020412
               39100446 39190459 41080543