Winter storm bears down on upper Midwest and Northeast

A major winter storm is moving from the upper Midwest into the Northeast, causing significant travel impacts and the possibility of power disruptions.

On Tuesday morning, the leading edge of the storm hit New York City, where two to four inches of snow are forecast before the storm turns into a messy mix of ice and rain around midday.

'The potential exists for 6 to 12 inches of snow from northern Wisconsin to northern Michigan, and even higher amounts across upstate New York and northern New England with 12 to 18 inches possible,' the National Weather Service said in a flash bulletin on Tuesday.

'A corridor of freezing rain is likely to the south of the heavy snow axis, extending from the central Appalachians to southern New England, and also across southern Michigan.'

Morning traffic moves slowly on U.S. 441 on Tuesday in Appleton, Wisconsin as a storm covered the region

Morning traffic moves slowly on U.S. 441 on Tuesday in Appleton, Wisconsin as a storm covered the region

Maintenance person Phillip Garza blows snow in front of a group of apartments on Tuesday in Minneapolis. The latest storm is expected to dump 3 to 5 inches of snow in the Twin Cities

Maintenance person Phillip Garza blows snow in front of a group of apartments on Tuesday in Minneapolis. The latest storm is expected to dump 3 to 5 inches of snow in the Twin Cities

A satellite image shows the storm moving toward the East Coast as of 9.27am ET on Tuesday

A satellite image shows the storm moving toward the East Coast as of 9.27am ET on Tuesday

This map shows the rain and snow forecast for the Midwest through the Northeast on Tuesday

This map shows the rain and snow forecast for the Midwest through the Northeast on Tuesday

Some areas in northern New England could see as much as 12 to 18 inches of snow through Wednesday morning

Some areas in northern New England could see as much as 12 to 18 inches of snow through Wednesday morning

The agency also warned that the storm would have 'significant travel impacts' and that ice and wind could result in power outages through Wednesday. 

Ice already hit the Chicago area hard overnight, resulting in a downed power transformer on the southwest side of the city captured in a shocking video by a resident. 

Some 78,000 customers were without power in Michigan, Ohio, Indiana and Illinois on Tuesday morning, according to PowerOutage.US. 

The storm was also causing significant disruption at major airports in the Midwest and Northeast.

As of 7.15am on Tuesday, more than 400 flights had been cancelled at LaGuardia Airport, and 200 had been cancelled at John F. Kennedy Airport, and 100 at Newark Liberty Airport. 

Over 250 flights have been canceled at Chicago O'Hare International Airport. 

Classes were cancelled at Penn State's University Park campus through 5pm on Tuesday, as heavy snow was expected to transition to ice through the day.

FlightAware's Misery Map shows heavy delays and cancellations at O'Hare and the New York region on Tuesday

FlightAware's Misery Map shows heavy delays and cancellations at O'Hare and the New York region on Tuesday

Greg Brux clears snow in the early morning on Tuesday in Kimberly, Wisconsin as a snow storm blankets the area

Greg Brux clears snow in the early morning on Tuesday in Kimberly, Wisconsin as a snow storm blankets the area

Morning traffic moves slowly on U.S. 441 on Tuesday in Appleton, Wisconsin as a heavy storm moves through

Morning traffic moves slowly on U.S. 441 on Tuesday in Appleton, Wisconsin as a heavy storm moves through

Footprints can be seen in the slushy snow Tuesday on Rochester Place in Hagerstown, Maryland. The Tri-State area can expect to see rain long into Tuesday night, followed by partly sunny skies and a high near 40 degrees on Wednesday

Footprints can be seen in the slushy snow Tuesday on Rochester Place in Hagerstown, Maryland. The Tri-State area can expect to see rain long into Tuesday night, followed by partly sunny skies and a high near 40 degrees on Wednesday

Parts of many states from the upper Midwest through New England were under winter alerts on Tuesday

Parts of many states from the upper Midwest through New England were under winter alerts on Tuesday

Ice could create major travel disruptions and power outages for the areas shown in the map above

Ice could create major travel disruptions and power outages for the areas shown in the map above

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