ZCZC SPCSWOMCD ALL ACUS11 KWNS 252040 SPC MCD 252040 TXZ000-252315- MESOSCALE DISCUSSION 0728 NWS STORM PREDICTION CENTER NORMAN OK 0340 PM CDT WED MAY 25 2016 AREAS AFFECTED...EDWARDS PLATEAU REGION OF SWRN TX CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE VALID 252040Z - 252315Z PROBABILITY OF WATCH ISSUANCE...60 PERCENT SUMMARY...AT LEAST ISOLATED THUNDERSTORMS ARE EXPECTED TO DEVELOP OVER THE EDWARDS PLATEAU REGION OF SWRN TX EARLY THIS EVENING. LARGE HAIL AND DAMAGING WIND WILL BE THE MAIN THREATS. DISCUSSION...ATMOSPHERE HAS BECOME STRONGLY UNSTABLE EAST OF DRYLINE FROM SWRN THROUGH NWRN TX WITH 3000-4000 J/KG MLCAPE INDICATED ON LATEST OBJECTIVE ANALYSIS. STRONG BOUNDARY-LAYER WARMING NORTH OF HIGH CLOUD BANDS ASSOCIATED WITH THE SUBTROPICAL FLOW REGIME HAS BOOSTED SFC TEMPERATURES TO 90F. CUMULUS DEVELOPMENT ALONG DRYLINE REMAINS LIMITED...INDICATING THE ATMOSPHERE IS STILL CAPPED. INITIATION OF STORMS ALONG DRYLINE REMAINS UNCERTAIN. HOWEVER...HIGH BASED STORMS DEVELOPING OVER THE HIGHER TERRAIN MAY SPREAD EWD AND INTENSIFY AS THEY INTERCEPT THE MOIST/INSTABILITY AXIS. VERTICAL WIND/SHEAR PROFILES WITH EFFECTIVE BULK SHEAR FROM 30-40 KT WILL SUPPORT SOME SUPERCELL STRUCTURES WITH LARGE HAIL THE PRIMARY THREAT. ..DIAL/HART.. 05/25/2016 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...FWD...EWX...SJT... LAT...LON 30160173 31150070 32019992 32159933 31659891 30519914 28960030 29550109 30160173 NNNN