The west coast has some interesting percipitation coming their way.

If there aren't winter warnings, there are flood warnings. The country is effected from west to east.

There are warnings for the Mississippi and it's tributaries. 

Below is the current rain gauge data. 
Red is a good color
Blue is a bad color 

Below left is the current temperatures 

Bottom right is anticipated temperatures tomorrow. Do you see where I am going with this? 

Where the snow and ice accumulate, there may be a very radical change in temperatures in less than a day and all that solid water will be running to the brooks, streams, tributaries and major rivers. There could be catastrophic flooding depending on the watershed. 

The wind is significant (click here for wind map)\

As the temperature changes rapidly there will be higher incidence for tornadoes as well. 

Basically, hang on to your hats, we are in for a heck of a ride. 

Peoples' best friend are their local forecasters. WATCH THE STREAMS AND RIVERS. 

People are better at home. 

Emergency routes have priority. 

I am very happy this is a weekend.