Good morning, residents of the midwest, eastern and southern portions of the United States. It may look habitable outside where you are right now, but there's a good chance that by the end of today that will no longer be true. "Winter Storm Dion" (did you guys know they named winter storms?) — which dumped snow and ice all over the West Coast earlier this week — is making its way east across the country, and will be leaving all shades of "wintery mix" in its wake.
If you live anywhere east of Wyoming and north of, like, Louisiana there's a good chance today and tomorrow are going to suck, so you should check out this very helpful region-by-region breakdown from the Weather Channel that explains what kind of weather you should be expecting and when you should be expecting it. Don't slip and fall! (You will probably slip and fall.)