What's that white stuff?

What's that white stuff?  It's snow, and it's coming down with a completely unreasonable enthusiasm.  Depending on which forecast I choose to believe, we're in for 3 to 5 inches of the stuff.  Looks like I won't be digging trenches today, either.

The radar picture at right shows that I'm in for a lot more snow, too.  The forecast says it is likely to be coming down from now through Saturday evening.  Yikes!