We are tracking the return of the polar vortex next week as a wavy jet stream brings a blast of Arctic air to the Great Lakes.

Snow from the winter storm will move into Chicago tomorrow morning, starting off light before picking up speed Wednesday afternoon. For the second time this year, Southern Californians are evacuating their homes as heavy rain threatens new destruction in areas still recovering from last month’s devastating wildfires.

Repeatedly in Lake Forest Wednesday, very light waves of snow would pick up significantly throughout day. Thus, as fast as crews went in to plow, the roads got blanketed again in a matter of minutes.

The first storm dumped over a foot of snow in parts of the Appalachians and mid-Atlantic, including Washington, D.C., which was blanketed by over 6 inches of snowfall on Tuesday. The White House, National Mall and U.S. Capitol were covered in white.