It will be running, but heavily delayed, detoured, and possibly be cutback entirely before Center city. Your best bet is to take the el to 69th, then transfer to the 65, last bus leaves at 12:20 from the south terminal, leaves approximately every 30 min. Note that SEPTA operators will call out like everyone else, and they don’t have enough replacements, so there probably will be some trip cancellations. Also a chance that the el skips stops in CC. Worst that happens is Uber though. You can check the 9/61 just in case, but chances are they’ll be suspended for all or part of the route. They really should be running extra trains, but no one from SEPTA would think of that because non of them ride the system…