that storm the man hole cover blew outside our house, sewage backed up street level, basement rooms of our home flooded...
can you say yuck?
good news is the back up in our basement was runoff from the backyards in our block that weren't draining because the downstream was overloaded so at least I wasn't sump pumping the yuck stuff. It stayed out in the street...
since then the whole sewer main has been replaced in our area and we haven't had a repeat... But I still check water
levels during heavy storms, just in case.