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An Arctic blast is expected to bring cold temperatures and heavy snow to Iowa around Thanksgiving and into early December.

A rare weather phenomenon, known as a sudden stratospheric warming, could weaken the polar vortex and push frigid air south.

Iowa may see several inches of snow on Thanksgiving, with the potential for blizzard conditions and temperatures 6 to 10 degrees below average.

The combination of La Niña and other weather patterns is contributing to the forecast for a colder, more winter-like pattern across the central and northern U.S.

Another Arctic blast is on the move toward the U.S ., bringing the potential for bitter cold and heavy snow accumulations to Iowa — possibly beginning during the Thanksgiving holiday weekend into early December.

It’s

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