More than 240 million people in U.S. under winter weather advisories

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A deep freeze enveloping most of the United States early on Friday combined with a massive winter storm brewing in the Midwest has left two-thirds of the nation under extreme weather alerts, confounding travel plans for millions of Americans.

Heading into the Christmas holiday weekend, the looming storm was forecast to develop into a “bomb cyclone,” unleashing heavy, blinding snow from the northern plains and Great Lakes region to the upper Mississippi Valley and western New York.

Numbing cold intensified by high winds was expected to extend as far south as the U.S.-Mexico border.

Hard-freeze warnings were posted across the Gulf Coast states of Texas, Louisiana, Alabama and Florida, while significant icing was possible from a separate arctic blast hitting the Pacific Northwest.

Most of the 48 states under advisories

By late Thursday, most of the lower 48 states, from Washington state to Florida, were under wind-chill alerts, blizzard warnings or other winter weather advisories affecting more than 240 million people, the U.S. National Weather Service (NWS) reported.

“This includes 181 million for wind chill warnings or advisories, over 11 million for blizzard warning, 58 million for winter storm warnings, and over 500,000 for ice storm warnings,” a statement from the service said.

The NWS map of existing or impending wintry hazards, stretching from border to border and coast to coast, “depicts one of the greatest extents of winter weather warnings and advisories ever,” the agency said.

A woman looks on outside of a tent in downtown Denver. (Alyson McClaran/Reuters)

The bomb cyclone could unleash snowfalls of 1.25 centimetres per hour driven by gale-force winds, cutting visibility to near zero, the weather service said.

Combined with the arctic cold, wind-chill factors as low as –40 C were forecast in the High Plains, the northern Rockies and the Great Basin, the NWS said. Exposure to such conditions without adequate protection can cause frostbite within minutes.

Power outages were expected from high winds, heavy snow and ice, as well as the strain of higher-than-usual energy demands.

One of the greatest immediate impacts, even before the storm fully took shape, was the upending of commercial air traffic during the busy holiday travel period.

Thousands of flights cancelled

More than 5,000 U.S. flights scheduled for Thursday and Friday were cancelled, with two major airports in Chicago accounting for nearly 1,300 of the cancellations, according to flight-tracking service FlightAware.

One would-be holiday traveler, Brandon Mattis, 24, said Thursday his flight from New York City to Atlanta was cancelled due to the coming storm, leaving him “flustered” at LaGuardia Airport in Queens.

Mattis said he searched for alternative routes and was even considering a 21-hour bus ride to Atlanta. “Anything we can do just to get there, we’re going to do,” he told Reuters.

WATCH | More than half of U.S. population under winter warnings:

More than 60% of U.S. population under winter warnings, officials say

The U.S. National Weather Service reported that over 240 million people, or roughly 60 per cent of the country’s population, are under some form of winter weather warning or advisory on the season’s busiest travel day.

The American Automobile Association had estimated that 112.7 million people planned to travel 80 kilometres or more from home between Dec. 23 and Jan. 2, up 3.6 million travellers over last year and closing in on pre-pandemic numbers.

But that number was likely to be diminished by air and road travel complicated by treacherous weather leading into the weekend.

Even U.S. President Joe Biden urged Americans to think twice about venturing out after Thursday, calling the gathering storm “dangerous and threatening.”

“This is not like a snow day, when you were a kid, this is serious stuff,” he said in comments at the White House on Thursday.

The jogger runs, both feet off the ground in the photo, wearing winter clothes including a hat with earflaps. The Chicago skyline is in the distance.
A jogger runs along Lake Michigan in Chicago in subzero temperatures Thursday. (Scott Olson/Getty Images)

The extreme cold also posed a particular hazard to livestock in ranching-intensive regions of the country. Tyson Foods Inc., the nation’s leading meat producer by sales, said it had scaled back operations to protect employees and animals.

The weather service said relief from the deep freeze was in sight for the northern Rockies and High Plains, where the arctic blast first materialized on Thursday. Temperatures in parts of those regions could rebound over the weekend as the cold air mass creeps farther east.



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