ZCZC SPCSWOMCD ALL ACUS11 KWNS 151501 SPC MCD 151501 MDZ000-DCZ000-VAZ000-WVZ000-PAZ000-151630- Mesoscale Discussion 0438 NWS Storm Prediction Center Norman OK 1001 AM CDT Mon Apr 15 2024 Areas affected...portions of eastern West Virginia...northern Virginia and western Maryland Concerning...Severe potential...Watch unlikely Valid 151501Z - 151630Z Probability of Watch Issuance...5 percent SUMMARY...Isolated showers and thunderstorms may produce gusty winds or small hail the next couple of hours across parts of the West Virginia, Maryland and Virginia border vicinity. DISCUSSION...A couple of thunderstorms have developed late this morning ahead of a stationary boundary near the WV/MD/VA border. This activity is likely somewhat elevated. Nevertheless, weak instability (generally less than 500 J/kg MUCAPE) amid steep midlevel lapse rates and modest effective shear could support sporadic small hail. A dry, mixed boundary-layer and light low-level flow also may foster gusty winds around 40-50 mph. This initial thunderstorm activity is expected to remain isolated and the overall severe threat limited over the next couple of hours, and a watch is not expected. The severe threat will increase across portions of Mid-Atlantic later this afternoon, and this later threat will be addressed with additional MCDs in the coming hours. ..Leitman/Smith.. 04/15/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...LWX...PBZ...RLX... LAT...LON 39737960 39597725 39007670 38677719 38727842 38957953 39207981 39737960 NNNN