ZCZC SPCSWOMCD ALL ACUS11 KWNS 032224 SPC MCD 032224 TXZ000-OKZ000-040100- MESOSCALE DISCUSSION 1126 NWS STORM PREDICTION CENTER NORMAN OK 0524 PM CDT SUN JUL 03 2016 AREAS AFFECTED...PORTIONS OF WRN N TX CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE VALID 032224Z - 040100Z PROBABILITY OF WATCH ISSUANCE...40 PERCENT SUMMARY...THE AREA IS BEING MONITORED FOR SOME INCREASE IN THE SVR-TSTM RISK LATE THIS AFTERNOON INTO THE EVENING HOURS. THERE IS SOME UNCERTAINTY REGARDING THE ANTICIPATED COVERAGE OF SVR TSTMS...AND THE ISSUANCE OF A SVR TSTM WATCH WILL BE POSSIBLE. DISCUSSION...A SFC BOUNDARY RUNNING APPROXIMATELY ALONG THE INTERSTATE 44 CORRIDOR FROM OK EXTENDS SWWD TO THE TX S PLAINS. A SFC TROUGH TO THE E IS ANALYZED FROM CNTRL OK SWWD TO THE PERMIAN BASIN OF SWRN TX. MESOSCALE ASCENT ALONG THE SFC TROUGH...COUPLED WITH DEEP BOUNDARY-LAYER CIRCULATIONS IN ITS VICINITY ENCOURAGED BY SFC TEMPERATURES IN THE UPPER 90S TO AROUND 101F...MAY CONTINUE TO FACILITATE CONVECTIVE DEVELOPMENT DURING THE NEXT FEW HOURS. LOW-LEVEL FLOW/CONVERGENCE ARE RELATIVELY WEAK...HOWEVER...AND THIS DETRACTS OVERALL CONFIDENCE IN A WIDESPREAD CONVECTIVE RISK EVOLVING. NEVERTHELESS...WARM-SECTOR BUOYANCY IS ROBUST -- WITH MLCAPE AROUND 2000-3000 J/KG THAT MAY ENCOURAGE ROBUST UPDRAFTS. WHILE MID-LEVEL FLOW IS RATHER MODEST...AROUND 20-25 KT OF EFFECTIVE BULK SHEAR MAY BE SUFFICIENT FOR A FEW MULTICELLULAR CLUSTERS TO EVOLVE. DCAPE AROUND 1000-1700 J/KG WILL PROMOTE STRONG DOWNDRAFT ACCELERATIONS AND OPPORTUNITIES FOR LOCALIZED CONSOLIDATING COLD POOLS...WITH ISOLATED TO PERHAPS WIDELY SCATTERED SVR WIND GUSTS. THIS WOULD ESPECIALLY BE THE CASE IF LOCALIZED COLD-POOL AMALGAMATION/UPSCALE GROWTH WERE TO OCCUR. GIVEN RICH LOW-LEVEL MOISTURE CHARACTERIZED BY LOWER 70S DEWPOINTS...MLCINH GAINS WILL BE SLOW TO OCCUR FOLLOWING DUSK. AS SUCH...SOME SVR RISK MAY EXIST...AND PERHAPS INCREASE...DURING THE EVENING HOURS AS A MODEST NOCTURNAL BOUNDARY-LAYER SPEED MAX BECOMES ESTABLISHED. AS SUCH...THERE IS CONSIDERABLE UNCERTAINTY REGARDING THE ANTICIPATED EVOLUTION OF THE SVR RISK AND PROSPECTS FOR WW ISSUANCE. REGARDLESS...CONVECTIVE TRENDS WILL CONTINUE TO BE MONITORED. ..COHEN/GUYER.. 07/03/2016 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...FWD...OUN...SJT... LAT...LON 33039985 34009863 33889776 33579749 33169784 32739889 32709983 33039985 NNNN