Highlights
NEW: Arrivals at Newark airport delayed 5½ hours
NEW: Buffalo's Skyway closed by wind and snow
Watches, warnings extend from central Plains to mid- and north Atlantic coast
Up to a foot of snow expected in parts from Illinois to New York
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(CNN) -- Milwaukee's airport was shut down and travel treacherous across the upper Midwest as a major winter storm plowed eastward Friday, the National Weather Service said.
A worker shovels snow as the storm hits Chicago, Illinois, early Friday.
2 of 2 "This is essentially the reincarnation of the same storm that brought the heavy snow to parts of California, southern Nevada and northern Arizona," Steve Corfidi, lead forecaster with the weather service's Storm Prediction Center in Norman, Oklahoma, told CNNRadio.
As much as 10 inches of snow was predicted for southern Wisconsin and Milwaukee's General Mitchell International Airport before dawn Friday.
To the south and east, snow and ice were creating havoc at major airports, from O'Hare International in Chicago, Illinois -- almost three-hour delays -- to New York's John F. Kennedy International -- 2½ hour delays, the Federal Aviation Administration reported.
And the storm's effects were felt far from its icy grip. It was a sunny 77 degrees at Florida's Palm Beach International Airport at noon Friday, but those with travel plans to Boston or New York saw their flights canceled, CNN affiliate WPBF-TV reported. Florida fliers could still get to Newark Liberty International, WPBF said, but the FAA reported Newark arrivals were delayed up to 5½ hours.
Almost a foot of snow was predicted for parts of central Michigan, CNN affiliate WNEM-TV in Saginaw reported. Classes were canceled in hundreds of schools across the state, according to the station's Web site.
Police in Buffalo, New York, shut down the city's Skyway highway because of winds and snow, CNN affiliate WGRZ-TV reported. Western New York had several inches of snow on the ground by noon, the station reported.
To the north in Ontario, Canada, southbound Highway 400 was shut down outside Toronto after an multi-vehicle accident in near whiteout conditions, CNN affiliate CTV reported.
"Lots of blowing snow. Visibility is next to nothing," CTV senior cameraman Tom Podolec reported from the scene.
Ontario Provincial Police reported 70 accidents in less than five hours Friday morning.
Forecaster Corfidi said the storm is expected to maintain intensity into Saturday, continuing eastward and "spreading a swath of very heavy snow and freezing rain all the way into Pennsylvania and New York."
Storm watches and warnings extended from the central Plains to the mid- and north Atlantic coast, he said.
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"There could easily be up to a foot of snow over parts of Illinois, northern Indiana, perhaps into parts of Michigan and southern Wisconsin, eastward into parts of New York and Pennsylvania," Corfidi said. Watch Arizonans cope with snowfall »
The system should move quickly, Corfidi said. It was not shaping up as an extraordinary winter event, he said.
"It is December, and winter storms certainly raise their ugly heads this time of year," Corfidi added.
But in New Hampshire, still reeling from an ice storm last week, crews worked feverishly to restore electricity service to more than 30,000 customers remaining in the dark, CNN affiliate WMUR-TV in Manchester reported.
Southern New Hampshire could get 10 new inches of snow before midnight Friday, WMUR said.
While the weather focus was east of the Rockies on Friday, forecasters in the Northwest had dire predictions for the weekend.
"It's going to be a real mess," National Weather Service forecaster Brad Colman told the Seattle Post-Intelligencer.
A major storm with wind gusts up to 90 mph and snowfall that could be a much as a foot deep was moving in from the Pacific, the newspaper reported.
This accumulation could pile on top of ice and snow left over from earlier this week. All major schools in the Seattle-Tacoma area were closed Friday, CNN affiliate KIRO-TV in Seattle reported, as roads were too icy for buses to navigate.
