Polar Vortex blankets eastern US with dangerous arctic air as nearly two dozen states feel extreme blast

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NEW YORK — The coldest aerial of the aboriginal winter play is blasting the eastbound U.S. Monday with single-digit temperatures with the wind chill, arsenic the Polar Vortex unravels and with it, brings unsafe arctic aerial to millions from New England to the Gulf Coast.

WHAT IS THE POLAR VORTEX?

  • Snow blanketed New York City Sunday morning.

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    Snow blanketed New York City Sunday morning. (FOX Weather)

  • Snow blanketed New York City Sunday morning.

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    Snow blanketed New York City Sunday morning. (FOX Weather)

  • Snow blanketed New York City Sunday morning.

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    Snow blanketed New York City Sunday morning. (FOX Weather)

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    NEW YORK, NEW YORK - FEBRUARY 01: Workers wide snowfall disconnected a subway presumption level successful the Midwood vicinity of Brooklyn connected February 01, 2021 successful New York City.  ( (Photo by Michael M. Santiago/Getty Images))

  • Snow falls crossed  Chicago.

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    Snow falls crossed Chicago. (Robert Ray/FOX Weather)

  • FILE - A antheral   walks done  the snowfall  with a scarf implicit    his look   successful  Washington, DC, connected  January 8, 2014, arsenic  adust  and unseasonably acold  upwind  hits the area. An Arctic blast sweeping Canada and parts of the United States this week closed schools, grounded jets, killed astatine  slightest  4  people, and adjacent    shook the ground. AFP PHOTO/JIM WATSON (Photo recognition  should work   JIM WATSON/AFP via Getty Images)

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    FILE - A antheral walks done the snowfall with a scarf implicit his look successful Washington, DC, connected January 8, 2014, arsenic adust and unseasonably acold upwind hits the area. An Arctic blast sweeping Canada and parts of the United States this week closed schools, grounded jets, killed astatine slightest 4 people, and adjacent shook the ground.      AFP PHOTO/JIM WATSON        (Photo recognition should work JIM WATSON/AFP via Getty Images) ( )

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    FILE - People locomotion successful acold temperatures successful New York City connected January 17, 2024. (ANGELA WEISS/AFP via Getty Images)

  • Cold Weather US

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    FILE - People locomotion done the freezing acold successful the Brooklyn borough of New York connected January 31, 2019. (ANGELA WEISS/AFP)

For those successful the Northeast and Midwest, this comes connected the heels of a fast-moving wintertime tempest this weekend, with subzero temperatures acceptable to frost leftover snowfall during the greeting and day commutes.

WHAT IS A WINTER STORM WARNING?

Meanwhile, astir of the Southeastern U.S. is nether a Cold Weather Alert Monday greeting with temperatures successful the teens, factoring successful the upwind chill, conscionable six days up of the commencement of astronomical wintertime connected Sunday.

Wind chill temperatures.
(FOX Weather)

More than 70 cardinal Americans are nether Cold Weather Alerts Monday, successful what the FOX Forecast Center said could extremity up being the coldest time of the twelvemonth erstwhile considering upwind chills.

Wind chill temperatures were successful the single-digits and teens crossed the Midwest and Northeast connected Monday morning.

TRAVEL NIGHTMARE: WINTER SNOWSTORM CAUSES DELAYS AND POWER OUTAGES ACROSS THE NORTHEAST

Indianapolis issued its archetypal Extreme Cold Warning for Monday, with expected upwind chill temperatures arsenic debased arsenic -25 degrees. Detroit has activated warming centers done Tuesday. 

In the Northeast and Mid-Atlantic, cities similar New York and Baltimore person activated Code Blue warming centers, aimed astatine providing alleviation from the utmost temperatures for the unhoused population.

Wind chill temperatures
(FOX Weather)

Wind chill temperatures reached azygous digits successful Nashville Monday greeting and were successful the teens successful Jackson, Mississippi.

Atlanta and Birmingham, Alabama person besides activated warming centers done the archetypal fractional of the workweek.

The bitter arctic aerial volition linger into Tuesday, peculiarly successful the Northern Tier, earlier a speedy warmup by midweek.

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