A powerful winter storm with heavy snow and rain has moved across the Northeast, causing last-minute travel problems as millions of people across the U.S. gather with family and friends on Thanksgiving to celebrate the holiday.

The storm’s impacts are widespread, stretching from New England and the Northeast across the Mid-Atlantic to the Southeast, where severe weather and possible tornadoes are possible during the day on Thanksgiving.

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Heavy snow has broken out across the northeast interior and winter weather is expected to continue falling and accumulating throughout the day and into Thursday night. This will slow traffic on streets and highways to and from gatherings on Thanksgiving Day.

The FOX Forecast Center said the highest snowfall amounts are expected in higher terrain in the interior of the Northeast.

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These include the Catskills, the Poconos, the Adirondacks and the Green and White Mountains.

Up to a foot of snow could fall on the highest peaks, while valley areas are expected to see more than an inch of snow accumulation due to warmer surface temperatures.

The snow will have a major impact on leisure travel, with hazardous conditions on major highways such as Interstate 90, Interstate 87, Interstate 91 and Interstate 93 during the day.

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Winter weather advisories have been issued across the region due to the Thanksgiving winter storm in the Northeast.

Winter storm warnings and winter weather advisories are in effect for parts of New York, Vermont, New Hampshire and Maine, and most will remain in effect at least through Black Friday.

South of the heavy snowfall, rain has broken out in areas of the Northeast and New England closer to the coast, including the I-95 corridor in cities such as Boston, New Haven, Connecticut, New York City and Philadelphia.

Rain has also pushed further south into the Mid-Atlantic in cities like Baltimore and Washington, and air traffic is expected to be affected during the day at some of the country’s busiest airports.

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The Southeast and portions of the Mid-Atlantic are also experiencing impacts from the winter storm, but these impacts will come in the form of a severe weather threat.

The FOX Forecast Center said a line of thunderstorms associated with the winter storm will develop throughout the day Thursday, some of which could become severe.

NOAA’s Storm Prediction Center (SPC) has highlighted areas from New Orleans and the Gulf Coast to the Southeast where the threat of storms is highest.

As a result, the SPC placed more than 18 million people at a level 1 out of 5 severe weather risk on its 5-point severe thunderstorm risk scale.

The biggest threat will be thunderstorms, which can produce damaging wind gusts, but there is also the possibility of a tornado or two forming.

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