A VERY CHALLENGING EVENING IS EXPECTED FOR THE NORTHEAST AS A LONG LINE OF SPARSE TO MEDIUM CONVECTIVE WEATHER CONTINUES TO IMPACT ARRIVAL AND DEPARTURE ROUTES FROM BOS TO CLT WITH GROUND STOPS/DELAY PROGRAMS IN PLACE FOR BOS, EWR, JFK, LGA, TEB, MMU, PHL, BWI, AND DCA. MULTIPLE EXTENSIONS OF THE STOPS AND REVISIONS OF THE GROUND DELAY PROGRAMS ARE EXPECTED. ATL, TPA, MCO, FLL, AND MIA ALSO REMAIN IN THE PLAN FOR POSSIBLE GROUND STOPS AS THUNDERSTORMS ARE FORECAST TO IMPACT THE TERMINAL AREAS THROUGHOUT THE EVENING.