So why the cold snap now? The reason can be broken down into one simple weather term: Cross Polar Flow. It's name is exactly what it sounds like. Air from SIBERIA is racing across the arctic and taking direct aim at the midwest. Northwest Ohio and Southeast Michigan included. Watch this video to see how it works:
And when we plot the past 180 hours at different levels of the atmosphere, it is clear to see that our air originates from a very chilly part of Russia.