A massive nor'easter is hammering the East Coast, knocking out power to tens of thousands, disrupting hundreds of flights and threatening communities from the Mid-Atlantic into New England. The Jersey Shore is already seeing some of the most dramatic impacts. Forecasters warn some towns could experience their worst flooding since Sandy, with beaches submerged, streets underwater and waves pushing dangerously close to protective dunes. And the storm isn't finished. Several more high tide cycles could bring renewed flooding and erosion as the system pushes north. See where the nor'easter is hitting hardest and what areas are in its path next: ▻