[sourdough]

I'm afraid what you are describing could be a million things. Without any of us being up close and personal with the rain, the amount, the environment surrounding the RV, the RV layout.....it's virtually impossible to figure that out. We've had "thuds", "pops", "thumps" and most every other kind of noise....some with nothing to worry about, others needed attention. Not cutting you short but I think that you will have to do the investigation to see where it's coming from and what could be the possible cause.....JMO.