The Arctic outbreak is expected to bring dangerous conditions across eastern US states, with temperatures plunging as low as -30 to -40 °F.
Meteorologists predict nearly 200 million Americans will wake up to below-freezing temperatures, especially in the northern Plains and upper Midwest by Saturday morning.
The National Weather Service warns of severe wind chills that could fall below 0 °F, raising significant risks of hypothermia and frostbite for exposed skin.
Areas downwind of the Great Lakes may face a significant lake effect snow event, alongside severe thunderstorms in the Southeast, highlighting the outbreak's intensity.
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