####018000913#### PENA01 KWNH 111200 @UHPISF000CNź MPDSUM@V2.0@0101700060@12110626@@0NMCGPHMPDp@!' `' ` @ ź¾& źBń7)p&¬PNAM02@@>ünż|ż|ü|ü}ū|ü}ü~ü~ś}ł}üū~ś}ś~ł~ś~ś~ś~ūüłśūüž’ƒ‚‚ƒƒƒ„„„„…„……†……†„„„„|ƒ|‚z|€z’{ž{@@ün€@@ün€@@=†‚ƒƒ„†…††……†…‚}ƒ|ƒ{‚{ƒ|‚{ƒ|ƒ|€{ž|ü|ü{ü|ü|ü|ü|ü}ü{ü|ü|ś}ū~ū}śūū~üūūūüżž’€‚‚‚‚@@†€@@†€@@“¬€0384 @@Į’€0385 @@d&€MESOSCALE DISCUSSION SUMMARY GRAPHIC @@d&ž€ OF ALL VALID MESOSCALE DISCUSSIONS AT @@d&ü€ TIME OF PRODUCT CREATION:@@d&ś€ ISSUED 06/11/2026 2000Z @@ d™€NOAA/NWS/NCEP@@d™ž€ WEATHER PREDICTION CENTER @@d™ü€ FOR COLOR VERSION SEE: @@d™ś€ WWW.WPC.NCEP.NOAA.GOV @####018001903#### AWUS01 KWNH 112003 FFGMPD NYZ000-PAZ000-MDZ000-VAZ000-WVZ000-OHZ000-120101- Mesoscale Precipitation Discussion 0386 NWS Weather Prediction Center College Park MD 402 PM EDT Thu Jun 11 2026 Areas affected...Central Appalachians/Northern Mid-Atlantic States Concerning...Heavy rainfall...Flash flooding possible Valid 112001Z - 120101Z Summary...Scattered thunderstorms are occasionally exhibiting heavy rainfall character due to cell mergers. Hourly rain amounts to 2.5" are possible, which could lead to widely scattered occurrences of flash flooding. Discussion...Veggie Band imagery shows what appears to be a low- to mid-level vorticity maximum/possible MCV moving across Lake Erie. This feature has led to shower and thunderstorm development across its eastern and southern flanks over the past few hours. While there was a brief period of cell training a couple hours ago near the southwestern NY coast, lately heavy rain cores have been caused by cell collisions, with hourly amounts up to 1-2" an hour estimated by radar. Precipitable water values are ~1.8" per GPS data. ML CAPE is 1000-2500 J/kg. Effective bulk shear is towards 25 kts. For the next couple hours, there could be a further increase in cell coverage which could lead to further cell collisions and a greater incidence of heavy rainfall. Given the parameters above, hourly rain amounts up to 2.5" are possible. Flash flood guidance values are modest to low across portions of NY, western PA, and WV. Widely scattered instances of flash flooding are possible. Roth ...Please see www.wpc.ncep.noaa.gov for graphic product... ATTN...WFO...BGM...BUF...CTP...ILN...LWX...PBZ...RLX... ATTN...RFC...RHA...TAR...TIR...NWC... LAT...LON 43357648 42637507 40827783 38507965 38128112 39498220 41477971 43097821 ####018001109#### PENA01 KWNH 111200 @UHPISF000CNź MPDSUM@V2.0@0101700060@12110626@@0NMCGPHMPDp@!' `' ` @ ź¾& źBń7)p&¬PNAM02@@DÆų€}’|’{ž|žzżzżzžzżzžzžzž{’z’z€t’z€h’{€|’|żyż{ü|ü}ü~öūśśūüž€‚‚ƒƒ‚ƒ‚‚‚€ €‚ƒƒ„…„……‡††„~‚|@@Æų€@@Æų€@@>ünż|ż|ü|ü}ū|ü}ü~ü~ś}ł}üū~ś}ś~ł~ś~ś~ś~ūüłśūüž’ƒ‚‚ƒƒƒ„„„„…„……†……†„„„„|ƒ|‚z|€z’{ž{@@ün€@@ün€@@=†‚ƒƒ„†…††……†…‚}ƒ|ƒ{‚{ƒ|‚{ƒ|ƒ|€{ž|ü|ü{ü|ü|ü|ü|ü}ü{ü|ü|ś}ū~ū}śūū~üūūūüżž’€‚‚‚‚@@†€@@†€@@“¬€0384 @@Į’€0385 @@‘ū€0386 @@d&€MESOSCALE DISCUSSION SUMMARY GRAPHIC @@d&ž€ OF ALL VALID MESOSCALE DISCUSSIONS AT @@d&ü€ TIME OF PRODUCT CREATION:@@d&ś€ ISSUED 06/11/2026 2003Z @@ d™€NOAA/NWS/NCEP@@d™ž€ WEATHER PREDICTION CENTER @@d™ü€ FOR COLOR VERSION SEE: @@d™ś€ WWW.WPC.NCEP.NOAA.GOV @