What to know about this weekend’s winter storm

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DENVER — The word “blizzard” can get overused. It doesn’t just mean a lot of snow — you also need strong winds and poor visibility, all for at least three hours.

For parts of the Mid-Atlantic and maybe the Northeast, the storm expected to hit Friday and Saturday should qualify.

And, blizzard or not, with heavy (and possibly historic) snowfall northward from North Carolina, and significant ice accumulations expected for parts of the Southeast, forecasters warn this storm could be a doozy.

Here are some things to know ahead of time:

Much of East Coast is in its path

Washington, D.C., is forecast to start getting snow late Friday afternoon and then get hit hard that night, when 10 to 14 inches of snow could fall. Another 9 to 13 inches is possible Saturday before the precipitation wraps up sometime after midnight. The snow will be accompanied by sustained winds of up to 30 mph and gusts of 10 or more miles per hour stronger than that.

Washington, D.C., is forecast to start getting snow late Friday afternoon and then get hit hard that night, when 10 to 14 inches of snow could fall. Another 9 to 13 inches is possible Saturday before the precipitation wraps up sometime after midnight. The snow will be accompanied by sustained winds of up to 30 mph and gusts of 10 or more miles per hour stronger than that.

The storm system is expected to hit Friday and Saturday in areas where more than 75 million live, from Arkansas eastward to the East Coast, and from the South to parts of the Midwest, the Mid-Atlantic, New York and southern New England.

Snowfall accumulations of at least 10 inches were possible for parts of Kentucky, eastern Tennessee, southern Ohio, North Carolina, West Virginia, Virginia, Maryland, southern Pennsylvania, northern Delaware, New Jersey and New York City.

As of Friday morning, blizzard warnings were in effect for Washington, Baltimore, Philadelphia and New York City, and watches were in place in nearby areas — covering nearly 30 million people.

The Washington area could see about 24 inches of snow from Friday evening through Saturday, with potentially 28-mph winds (and gusts up to 38 mph), making for poor visibility.

Even more snow — up to 30 inches — was possible just to the west, in northern Virginia and parts of Maryland.

The Philadelphia area may have up to 14 inches.

There was more uncertainty for New York City — up to 1 foot was expected as of Friday morning. The city could see more if the storm tracks farther than expected to the north, or less if it goes south.

Record-breaker for Washington?

The nation’s capital hasn’t seen too many snowfalls of more than 17 inches in 130 years, so this storm could be of historical significance.

The “Knickerbocker Storm” of 1922 dumped 28 inches and killed nearly 100 people when the roof of a theater by that name collapsed under the weight of snow.

More recently, there was “Snowmageddon” — the February 5-6 storm of 2010 that the National Weather Service says dropped 17.8 inches in the city. News reports at the time, however, said higher amounts — about 25 inches — were recorded at Washington’s American University.

According to the National Weather Service, Washington has received only five snow events totaling more than 17 inches of snowfall over a maximum three-day period since record-keeping began in 1884.

Flight cancellations and road closures

The forecasted storm track covers a number of major airports — including those in the Washington, Baltimore, Philadelphia and New York areas.

More than 4,600 flights scheduled for Friday and Saturday were canceled, the flight tracking website flightaware.com reported around 7 a.m. ET Friday. There were roughly an equal number called off Friday and pre-emptively for Saturday.

Even on Thursday, airlines and cities were warning would-be passengers to consider rescheduling their weekend plans.

“We are expecting severe snowfall in NYC and IAD on Saturday 23/01 that may cause significant disruption to our flights,” Virgin Atlantic said Thursday on Twitter, referring to Washington Dulles International Airport and other area airports. “If you’re booked to travel on the 23/01 to, from or through NY or IAD, we strongly recommend rebooking.”

Washington Mayor Muriel Bowser urged people to avoid roads during the storm.

“I don’t know that I have lived through a forecast like this. It’s an extremely large storm,” she told reporters Thursday.

Ice could leave many without power

Ice accumulation is a major concern in two chunks of the south: an area covering parts of Arkansas, Tennessee and Kentucky, and one including northeast Georgia, the Carolinas and parts of Virginia. Up to 1 inch of ice accumulation is possible from northeast Georgia into the Carolinas. That's potentially terrible news for drivers, and the weight of the ice can snap power lines or bring down trees that will do the same.

Ice accumulation is a major concern in two chunks of the south: an area covering parts of Arkansas, Tennessee and Kentucky, and one including northeast Georgia, the Carolinas and parts of Virginia. Up to 1 inch of ice accumulation is possible from northeast Georgia into the Carolinas. That’s potentially terrible news for drivers, and the weight of the ice can snap power lines or bring down trees that will do the same.

Snow won’t be the only problem in the South.

Ice accumulation is a major concern in two chunks of the south: an area covering parts of Arkansas, Tennessee and Kentucky, and one including northeast Georgia, the Carolinas and parts of Virginia.

Up to 1 inch of ice accumulation is possible from northeast Georgia into the Carolinas. That’s potentially terrible news for drivers, and the weight of the ice can snap power lines or bring down trees that will do the same.

Charlotte and Raleigh, North Carolina, and Greenville and Spartanburg, South Carolina, were among the cities with significant ice accumulation possible.

Severe thunderstorms and even tornadoes also were possible Friday in eastern Texas and parts of Louisiana and Mississippi.

Be prepared

Ready.gov, a Department of Homeland Security website, offers tips on what to do before and during winter storms to keep safe.

These include having certain emergency supplies handy.

The Centers for Disease Control and Prevention also offers online checklists on how to prepare your home and car for storms.

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