At Denver International Airport, there were 100 flights canceled Saturday because of high winds.
Two boys, ages 5 and 8, died Saturday near Patton, Missouri, when the vehicle they were riding in was swept off flooded roads. A storm-related death also was reported in South Dakota.
Almost the entire lengths of both Wyoming interstates were closed Saturday. Wind gusts could reach up to 45 miles per hour along the coast, with Cape Ann and outer Cape Cod suffering the worst of the bluster.
As of 10 a.m. Sunday, 53 flights were delayed and 6 were cancelled at the three New York-area airports, according to the flight tracking website FlightAware.
All roads in and out of Casper were closed Saturday morning, including the entire 300-mile stretch (483-kilometer) of Interstate 25 in Wyoming.
Blizzard conditions early Saturday buffeted the High Plains.
"A powerful storm continues its eastward movement this weekend with heavy snow, powerful winds, and areas of wintry mix spreading across the Northern Tier", the weather service said in an advisory. Duluth police officers were checking identification before allowing vehicles across the Aerial Lift Bridge; the restriction went into place late Saturday night as conditions deteriorated.
"The low pressure will remain hugging NZ just to our south until Monday of next week and basically means a westerly flow will kick in, with rain on the West Coast, winds through central and eastern areas and remaining warmer than normal in the east and north".
Areas farthest north and inland will see the most snow - with up to a foot of accumulation possible in Dutchess and Ulster counties in the Hudson Valley and Litchfield County in CT - but there will be treacherous travel conditions at times throughout the region.
Another storm system developed in the mid-Atlantic Sunday and forecasters said it would move into a nor'easter through Monday.
Two adults and four other children were rescued by helicopter, but a 6-year-old girl is still missing. Ice accumulations are predicted in parts of Pennsylvania.
Meanwhile, the National Weather Service said the storm was expected to drop 15cm to 30cm of snow into Minnesota, Wisconsin and Upper Michigan.
High winds and ice were making travel nearly impossible in some other places, however.
Before moving east, the storm caused the death of at least one person in South Dakota and closed highways in the western US, affecting travelers over the Thanksgiving holiday.
Winter storm Ezekiel first entered the West Coast on November 26 when it hit southern OR and northwest California as a bomb cyclone, the Weather Channel reported.