Snowstorm threatens Northeast with blizzard, Mid-Atlantic with freeze-over

States of emergency have been called in Pennsylvania, Tennessee, Maryland, Virginia and North Carolina, and they stretch as far south as the northernmost counties of Georgia.

Follow the storm on CNN’s interactive storm tracker

Washington worst case

On Thursday, a dusting of snow during morning rush hour caught Washington off guard.

When motorists drove over it, the snow packed down and froze solid, turning streets into parking lots. Some drivers abandoned their cars, leaving them stranded.

Homeland Security is worried that things could get much worse. “There are predictions going off the map for it,” emergency management spokesman Chris Geldart told CNN’s John Vause

By Sunday, Washington could break its all-time snow record. Twenty-eight inches fell in the “Knickerbocker Storm” of 1922, named after a theater that collapsed under the weight of snow, killing 100 people.

With the weight of so much snow falling at once over the weekend, “we’re concerned that we will perhaps get some collapsed roofs,” Geldart said.

Ice and snow could snap tree limbs, downing electrical lines. “It is a very real chance that we are going to see some very high numbers for power outages,” Geldart said.

Big snow dump

The blizzard is expected to hit Baltimore just as hard. The heaviest snow warning from the National Weather Service covers more than 15 counties in the region.

Moving outside the storm’s Washington-Baltimore bull’s-eye, snow will pile up a foot or two in eastern Kentucky, West Virginia, Virginia, southern Pennsylvania and New Jersey, the CNN Weather Center said.

Philadelphia and New York City were placed under blizzard warnings early Friday. Before the storm’s path began to firm up, at least one prediction model said the storm might veer over the Atlantic and spare much of the Northeast the worst.

Virginia also got a dangerous preview Thursday, when cars slid off course, and police untangled 767 accidents and tended to 392 stalled motorist calls. A man died in Maryland, when a snowplow hit him.

Virginia Gov. Terry McAuliffe has called out 500 National Guard members to face the coming storm. “We have the equipment, we have the folks, they’re mobilized, they’re ready. We’ve been out for 24 hours. We like to get out early,” he told CNN affiliate WJLA.

Residents have wiped supermarket shelves clean of basic staples like milk, bread and beer.

Why milk, bread and toilet paper when it snows?

Heaters, shovels and sleds sold at a frenzied pace in Silver Spring, Maryland. Ice melt chemical, too.

“They know (the storm is) coming,” Roy Washington, a manager at Strosniders Hardware, told WJLA. “They hear the forecast, and they want to be prepared for it.”

Flight cancellations

Ahead of the storm’s arrival on the East Coast, airlines have canceled more than 4,500 flights, and anticipated troubles at regional airports are resulting in flight delays and cancellations elsewhere in the country.

United Airlines announced it would suspend flights at its Washington Dulles International Airport hub and other Mid-Atlantic airports starting Friday afternoon.

Amtrak also announced a modified schedule in the Northeast because of the storm, and Washington said its Metrorail system would close all day Saturday and Sunday.

“This is not a storm that anyone should take lightly, and I would urge all residents to plan to get to a safe place before the storm arrives Friday afternoon,” said Metro CEO Paul J. Wiedefeld.

At Reagan International Airport near Washington, long lines formed as people got out of town early. Airport workers prepped for the looming blizzard.

“We’re checking our chemical levels, our equipment, and also calling in our snow removal teams,” said Washington airports spokeswoman Kimberly Gibbs.

Ice corridor

And farther south, a mix of wintry precipitation is icing a swath from eastern Arkansas through Tennessee, Kentucky, north Georgia and the Carolinas.

Tennessee was hit early, and a 19-year-old man died Wednesday after his car slid off a road “due to weather and speeding,” authorities said. Two people died in North Carolina late Wednesday in crashes along snow-covered roads.

In Charlotte, North Carolina, host to the NFC professional football championship on Sunday, the North Carolina Panther Pride parade was canceled.

And American Airlines nixed some flights in and out of the city ahead of the storm, which is expected to dump freezing rain there.

The Panthers face the Arizona Cardinals in the championship.

Some Arizona fans took flights early to beat any cancellations, AZ Central reported. But the team has not changed travel plans and will be on a Delta Air Lines flight out of Phoenix late Saturday.

North Carolina Gov. Pat McCrory said his state is doing “everything we can” to ensure public safety if worst-case scenarios come true. Several schools, churches and courts around North Carolina had been ordered closed Friday.

“Our goal with this potential winter storm … is to be overprepared and hopefully underwhelmed,” McCrory said.

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