I have been loving this site; shows when the weather systems are coming into the area and how they get started out in the Pacific! It’s interactive too, just click on the word “Earth” or drag your mouse around on it!  Look at surface winds or choose your height if you prefer upper air disturbances!

What is great is I can look at this one view and know when the storm chasing will likely be good and non-existent.  Gives me a really quick look at the next 4-5 days, and helps me determine when further research is necessary!