You guys have probably come across this in the past, but I just saw it for the first time. It is kind of interesting to see the "big picture", especially if you're planning to do some long distance traveling.
http://www.intellicast.com/IcastPage/LoadPage.aspx?seg=LocalWeather&loc=usa&Product=Radar&prodgrp=RadarImagery&prodnav=none
http://www.intellicast.com/IcastPage/LoadPage.aspx?seg=LocalWeather&loc=usa&Product=Radar&prodgrp=RadarImagery&prodnav=none