【Mystery Archives】

Mashable's Andrew Freedman warned all of you last week: "Stupid-level cold" incoming.

In the aftermath of the "bomb cyclone" that slammed the eastern United States on Mystery ArchivesWednesday and Thursday, a bitter cold has descended. It's thanks to all the frigid air blowing in from the North Pole and parts of Canada, all the way down to the Gulf of Mexico.

That's why we saw rare glimpses of snowfall in southeastern states like Florida and Louisiana earlier in the week, and it's why meteorologists up and down the U.S. eastern seaboard are still warning against the dangers of sub-zero wind chill. In fact, this post-storm cold snap marks the coldest start to winter in at least a century for the northeast and Great Lakes region.

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Here, just look at this visualization of low temperature records set over the past week (h/t Coolwx). Pay particular attention to the U.S. East Coast here. The blue markers represent temperatures that either tied (lighter blue) or broke (darker blue) daily and monthly records.

It's mesmerizing, isn't it?

Various National Weather Service social media accounts also continue to file update after update about brutal weather conditions and broken records.

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The cold temperatures are so extreme, in fact, that the NWS issued a briefing statement on the conditions around Cape Cod, Mass., where sea ice formations are appearing off the coast.

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Thankfully, the extreme cold snap is almost over. Temperatures should start to rise as soon as Monday, and the NWS predicts warmer-than-average weather by Thursday, Jan. 11.

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With additional reporting by Andrew Freedman.