Boston (CNN) — The snowstorm is heading out to sea. It has left one man dead in its wake so far and taken electricity from over 600,000 customers in the Northeast.

Connecticut saw the most accumulation by late Friday with an average of about a foot, according the National Weather Service, but the nor’easter has beaten up Massachusetts with winds howling at 60 to 75 mph. It knocked out power to over 380,000 addresses there, accounting for over two thirds of all power outages.

Electricity dropped out at a nuclear power plant in Plymouth, Massachusetts, said fire spokesman Ed Bradley, but backup generators sprang into action. It’s not an emergency, he said. Plymouth is 90% in the dark.

Rhode Island may have seen the worst outages relative to its size, with over 180,000 customers losing power. At 1 million residents, it has only one sixth of Massachusetts’ population, according to the U.S. Census Bureau.

Snow covers the area from eastern Pennsylvania to Maine, the NWS said. It has turned most everything in sight white. Governors in many states declared states of emergency Friday.

Instead of carrying its destructive power further inland, the way superstorm Sandy did in early November, the nor’easter has begun taking its fury off shore, CNN Meteorologist Chad Myers said. But the blizzard is not over yet, as the system will continue to sling snow back toward land, as it heads over the Atlantic.

By mid morning Saturday, the precipitation will have slowed to a flurry, Myers said. The worst of the snow should cease before sunup, but winds will continue to push up dangerous drifts.

Massachusetts, Connecticut and Rhode Island, ahead of the storm, ordered motorists to stay off the streets under threat of imprisonment and fines — up to a year in jail and $500 in Rhode Island.

Emergency and snow clearing vehicles are the only exceptions. Massachusetts’ travel ban will last until at least 4 p.m. Saturday and not officially be over until the state’s governor lifts it, according to emergency management spokesman Peter Judge.

Still, the only known loss of life from the storm so far occurred in a vehicle accident in New York. An 18-year-old woman lost control of her car due to the falling snow and struck a 74-year-old man walking near the side of the road, police in Poughkeepsie said. He died in hospital from his injuries.

Rail transportation has come to a virtual halt, and nearly 5,000 flights have been canceled to and from the Northeast Friday and Saturday.

Cities in the most populous section of the country looked like ghost towns, as streets usually bustling with traffic emptied out. Residents followed the pleas by governors and mayors to “basically, stay at home,” as Boston Mayor Thomas Menino had advised.

CNN’s cameras captured images of snow plows roaming the night, clearing roads that the snow began recovering as they passed. iReporter Justin Vieria in New Bedford, Massachusetts, also sent in video of two snow clearers cruising past.

Cabin fever and curiosity drove some residents out of their homes for a stroll. “Boy, do I love going out for walks in the blizzard,” Vieria said.

Dozens of meandering Boston residents converged for a playful snowball fight in an otherwise empty city street.

CNN reporter Ali Velshi was braving wind, sleet, snow and ocean spray to report on the blizzard rolling onto shore in Dennis Port, Massachusetts, when two residents surprised him.

Jim and Garrett — no last names given — had heard there may be a storm surge and went down to the waterfront to check for themselves.

“We expected to see, frankly, a little more surf than is going on here now,” Jim told Velshi. “But the wind and the sleet — it’s really pounding against you.”

Massachusetts’ emergency management agency, MEMA, has said there may be a significant surge Saturday, but at CNN’s live positions at various points in the hardest hit region, the winds have appeared to have calmed in pre-dawn hours.

A life-long New Englander, Jim had lived through the “Great Blizzard” of 1978, the benchmark for snowstorms in the Boston area. “This is nothing compared to that — so far anyway,” he said. The two had briefly lost power a few times, but still had electricity service.

Most of the power outages in the state have hit the southeast portion, Judge said. The state has deployed 3,600 vehicles, mainly plows, to handle the snow. Boston has trucks readied with 43,000 tons of sand to spread across city streets, Menino told CNN.

Massachusetts has opened 18 emergency shelters. By early Saturday, over 250 residents had taken advantage of them, Judge said.

The nor’easter has swatted down travel arrangements for pro basketball teams headed to New York City, leaving the New York Knicks, San Antonio Spurs and Brooklyn Nets grounded.

The Knicks are stuck in Minneapolis, where they played the Timberwolves Friday, a spokesman said. They have a home game at Madison Square Gardens Sunday against the L.A. Clippers.

Canceled flights forced the Nets to attempt to get home by train from Washington, D.C., after a game there against the Wizards.

And the San Antonio Spurs, who were originally flying to New York Sunday night, are stuck in Detroit.

– CNN