Massachusetts coasts are bracing for potential flooding as a powerful nor'easter unleashes drenching rain and strong winds. The storm is already impacting coastal communities, with reports of high surf pushing against seawalls and waves inundating streets. The town of Marshfield has been particularly hard-hit, experiencing nearly five inches of rainfall and wind gusts reaching 50 mph. As high tide approaches, there are growing concerns that flooding could worsen significantly in low-lying coastal areas across the state.