The massive storm that started out as Hurricane Sandy slammed into the East Coast and morphed into a huge and problematic system, putting more than 8.5 million homes and businesses in the dark and causing at least 50 deaths in the U.S. Here's a snapshot of what is happening, state by state.
The Long Island Sound flooded roads as the storm toppled trees and power lines. Three people died, including a man last seen swimming in heavy surf. Power outages: 594,000, down from a peak of more than 620,000.
Nearly all residents of flood-prone coastal communities in Kent County heeded calls to evacuate. The Rehoboth Beach and Dewey Beach resort communities were flooded. Power outages: 8,900, down from more than 45,000 at the peak.
High wind warnings and a lakeshore flood warning are in effect Tuesday and Wednesday in Chicago. City officials said Lake Shore Drive is expected to remain open.
A winter storm warning was in effect for three southeastern counties. Up to a foot of snow fell at high elevations along the West Virginia border.
Wind gusts topped 60 mph, shutting down the port of Portland and knocking out power to homes and businesses. Power outages: About 25,000, down from a peak of more than 90,000.
Floodwaters swamped touristy Ocean City. In western Maryland, up to two feet of snow tied up traffic. Two people were killed, including a man who died when a tree fell on a house in Pasadena. Power outages: More than 145,000, down from a peak of 290,000.
Strong winds and heavy surf led to mandatory evacuations in sections of coastal Dartmouth and Fall River and voluntary evacuations in other coastal communities. Power outages: About 230,000, down from a peak of about 400,000.
Cargo shipping on the Great Lakes was at a standstill because of waves of up to 20 feet. Power outages: More than 150,000.
Politicians canceled visits to the presidential swing state on Monday. A construction worker checking on a job site in Lincoln, N.H., was killed in a landslide. Power outages: About 113,000, down from a peak of 210,000.
The center of the storm came ashore Monday evening near Atlantic City, which was cut off from the mainland by the storm surge along with other barrier islands, stranding residents who ignored warnings to evacuate. A tidal surge sent water into the streets of two northern towns, setting off a frantic rescue effort. There were six deaths. Power outages: 2.3 million, down from a peak of 2.7 million.
A record storm surge that was higher than predicted along with high winds damaged the electrical system and plunged millions of people into darkness. Utilities say it could be up to a week before power is fully restored. A fire burned 50 houses in one flooded section of Queens. There were 25 storm-related deaths, 18 of them in New York City. Power outages: 2.18 million, down from a peak of 2.2 million.
Parts of western North Carolina were under a winter storm warning, where a foot of snow had fallen in higher elevations. A woman who was pulled from the Atlantic after abandoning a tall ship was among two dead. Power outages: A high of 126,000, down to fewer than 400.
The Cleveland area and northeast Ohio were being slammed with rain and high winds. Snow was reported in some parts south of Cleveland and south of Columbus. A pair of car crashes on icy roads in northwest Ohio killed two people. Power outages: More than 250,000.
Wind and flooding closing more than 200 bridges and roads. Five people died, including an 8-year-old boy who was killed when a tree limb fell on him. Power outages: About 1 million, down from a peak of 1.2 million.
The storm surge destroyed beach cottages and flooded businesses. Providence's hurricane barrier performed well in one of its biggest tests. Power outages: About 80,000, down from more than 115,000 at the peak.
Nearly two feet of heavy, wet snow fell in the Great Smoky Mountains National Park. Hikers coming off sections of the Appalachian Trial reported tangles of fallen trees and waist-deep drifts.
Winds knocked down trees and power lines, and schools were closed. Power outages: 3,550, down from a peak of more than 10,000.
Utilities brought in crews to help restore power after high winds and snow. A curfew was ordered Monday on Chincoteague Island. Two people died in storm-related traffic accidents. Power outages: More than 128,000, down from a peak of more than 180,000.
Federal and local governments were closed Tuesday along with the courts and public schools. Power outages: Nearly 9,000, down from a peak of about 25,000.
Some areas were buried under more than a foot of snow. A woman was killed in a traffic crash. Power outages: More than 268,000.
A village along Lake Michigan suggested residents evacuate Tuesday morning because of the possibility of dangerously high waves and flooding.