Superstorm Sandy will be remembered by many as the most tumultuous storm of their lifetimes. Hudson Valley residents have individual memories of suffering and deliverance, but what follows are Newsday's list of 10 moments, in no particular order, that helped define the storm and its aftermath.

"12-12-12: The Concert for Sandy Relief:" An All-Star lineup including Billy Joel, Jon Bon Jovi, Eric Clapton, The Rolling Stones, Bruce Springsteen & the E Street Band, and Paul McCartney rocked Madison Square Garden for a good cause.

Boat on tracks: The power of Sandy's tidal surge was amply demonstrated when the Metropolitan Transportation Authority reported a 38-foot boat that washed up on the tracks of the Metro-North Railroad near the Ossining station. Photos of the boat were some of the storm's most indelible.

Hudson River surges: Sandy made landfall Monday night, Oct. 29, sending a tidal surge up the Hudson River, flooding coastal areas like Piermont and Irvington and swamping sewage treatment plants along the river.

Manhattan in darkness: Sandy breached the seawalls of the Battery in lower Manhattan, swamped part of the subway system and poured into the Brooklyn-Battery Tunnel and Queens-Midtown Tunnel. A Con Edison substation in the East Village exploded and lower Manhattan was plunged into darkness.

Gas shortages stir violence: Unexpected gasoline shortages sparked violence and frustration in the tristate area. Fistfights were reported within three days and many gas stations were idled because they had no power and others had no supplies.

advertisement | advertise on newsday

Powerless: More than 8 million utility customers in 16 states lost power from Sandy's wallop, according to the U.S. Department of Energy. Almost a half million of those homes and businesses were in the Hudson Valley. For some, the lights would not return for weeks.

Aid request: In December, leaders of New York, New Jersey and Connecticut announced that they were asking Congress for $82 billion in aid to recover from Sandy. In early December, President Barack Obama asked for a more modest $60.4 billion, but Republicans in Congress began whittling away at that request, too.

Politicians visit: On Oct. 31, Gov. Andrew Cuomo, Sen. Charles Schumer, Westchester County Executive Rob Astorino and others took a helicopter tour over damaged areas. On Nov. 4, Sen. Kirsten Gillibrand and Rep. Nita Lowey toured downtown Piermont to assess damage.

Trains return: Sandy shuttered Grand Central Terminal and large parts of the Metro-North Railroad, but within one week of the storm, service on most lines was restored.

Deadly toll: Jack Baumler, 11, and Michael Robson, 13, were killed when a tree came through the roof as they played in Baumler's North Salem home. Retired NYPD Sgt. Jeffrey Chanin, 51, died when a tree hit his Pearl River home. Tiago Neto, 54, of Yonkers, was killed when his car hit a tree that fell across the Sprain Brook Parkway in the Town of Greenburgh. Doreen Richardson, a 69-year-old Kerhonkson woman, died when a wind gust dislodged part of a trailer's roof and sent it flying into her windshield as she was driving in a trailer park.