Polar Vortex Redux - Temps to Drop 30 Degrees or more today/tomorrow in Midwest

Alternate headline - Global Warming Update.  So here we go again - we are in for another round of dropping temps, as much as 30 degrees, throughout the Midwest.  Via The Daily Mail:

Temperatures are expected to drop up to 30 degrees below normal across the Midwest today as the Polar Vortex returns for a third round of severe arctic weather. By the middle of the week the arctic blast will head east plunging temperatures in Indiana and Massachusetts into single digits. Even the Deep South will experience temperatures below freezing, according to the National Weather Service (NWS). The NWS said it will not be as severe as the first Polar Vortex to hit the U.S. in January but described it as 'a cold mass of arctic air.'

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Cold comfort: The return to cold weather next week will be anything but straight forward as several storms of various strength and track will swing through

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Snow escape: A 6 to 10 day forecast shows a swathe of cold temperatures expected to hit the country next week - with the Midwest, South and East expected to get temperatures colder than normal
Read more: http://www.dailymail.co.uk/news/article-2567428/Temperatures-drop-30-DEGREES-normal-today-Midwest-Polar-Vortex-returns-round-severe-arctic-weather.html#ixzz2uM9kVtgy