As arctic air filters south and east behind the outgoing Nor'easter, which brought a mix of heavy snow and gale throughout most of the East Coast over the weekend, more than 15 million people in the Northeast, Appalachians, and southern Florida are under wind chill warnings.

Morning freezing temperatures across much of the Northeast and Appalachians are expected to be in the single digits and teens, according to media sources. However, morning temperatures in several parts of New York and New England may fall below zero. In the morning, winds behind the Nor'easter could gust as high as 40 mph in some areas. "These strong winds, along with the extreme chilly air temperatures, will result in wind chills of 10 to 20 degrees (Fahrenheit) below zero," the media reported.

"This cold, arctic air will reach as far south as Florida this morning, when some cities may see record morning low temperatures." Morning low temperatures will be in the high 20s to mid-30s Fahrenheit over the region, with wind chills as low as 20 degrees Fahrenheit.

The National Weather Service (NWS) office in Miami has issued a warning of "falling iguanas" due to the coldest air to hit southern Florida in over a decade. A massive, fast-moving winter storm swept up the East Coast on Saturday, bringing with it raking winds, blinding snow, and piercing cold, causing power disruptions, disrupted travel, and overall misery to millions of residents.

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