ACUS11 KWNS 061507 SWOMCD SPC MCD 061507 PAZ000-MDZ000-WVZ000-OHZ000-061730- Mesoscale Discussion 0998 NWS Storm Prediction Center Norman OK 1007 AM CDT Sat Jun 06 2026 Areas affected...eastern Ohio...western Pennsylvania...northern West Virginia...and northern Maryland Concerning...Severe potential...Severe Thunderstorm Watch likely Valid 061507Z - 061730Z Probability of Watch Issuance...80 percent SUMMARY...Thunderstorm activity to increase in coverage and intensity through the late morning/afternoon with an increase in damaging wind potential. DISCUSSION...A line of storms continues south and east across portions of eastern Indiana into Ohio, with occasional strong to isolated severe gusts (50-60 mph). It is uncertain how this will evolve downstream, with guidance showing potential for maintenance and intensification along the remaining outflow later in the afternoon. Gradual increase in forcing for ascent will occur this afternoon as strengthening mid-level flow overspreads the area with the trough across the Great Lakes. Filtered heating is expected through broken mid-level cloud cover. This in combination with dew points in the low to mid 60s will yield around 1000-1500 J/kg MLCAPE. Additionally, steepening low-level lapse rates are expected, supporting downward transport of higher momentum flow aloft to the surface. Additional downstream development is likely with potential for several clusters of storms capable of damaging wind through the afternoon. While exact timing of this threat remains uncertain, a watch will likely be needed to cover this potential by the afternoon. ..Thornton/Thompson.. 06/06/2026 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...CTP...LWX...PBZ...RLX...CLE...ILN...IWX... LAT...LON 39388094 39598308 39778367 40128449 40428451 40718435 41138399 41408307 41498278 41707930 41127867 40497870 39977880 39517912 39388094