A powerful Bomb Cyclone is set to explosively develop over central U.S. and into the Great Lakes tomorrow through Christmas.

Blizzard conditions may reduce visibility a to near zero. Wind chills on the backside of the storm as low as minus-40 may promote frostbite in as little as 10 minutes.
Snow totals will vary, but the lengthy assault from strong winds will lead to dangerous conditions whether 4 inches or 18 inches fall. The peak of the storm Friday will likely severely disrupt travel.