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Iowa is expected to experience the coldest temperatures in the Lower 48 due to a surge of Arctic air.

A weakened polar vortex is allowing frigid air to spill into the U.S., creating a winter-like weather pattern.

Record-breaking low temperatures are likely through Thursday, with light snow chances but minimal accumulation expected.

A gradual warm-up is forecast for the weekend, but temperatures will remain below normal with chances for light snow.

Temperatures across Iowa are forecast to plunge to the coldest in the Lower 48 , dipping well below zero as a surge of Arctic air sweeps in.

The broader weather pattern will stay active and winter-like through the end of the week and into the weekend . A recent stratospheric disturbance weakened the polar vortex, all

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