Q: What is a Miller A and Miller B? How do you differentiate the two?
A: A Miller A storm is a storm that forms in the gulf or off the southeast coast off of a cold front and then rides up the coast moving northeastwards with high pressure in place from the Rockies on eastward. A Miller B storm is where a clipper system dives out of Alberta, Canada and redevelops into a coastal storm then moves up the coast.
Here are the illustrations of a Miller A and Miller B storm, respectively.

