Since storms track to the east in this region, they would have been even farther west and not a factor.
Look....
"Tony Cook is a Captain for Delta airlines with 43 years of experience under his belt. "
"The conditions under which these guys were landing in Birmingham the other day were just run of the mill, mundane," he said. "It wasn't difficult for them to land at all. That's given that everything was working and there was nothing else going on in the airplane and that I don't know. I don't want to hazard a guess."
http://www.waff.com/story/23152061/valley-pilot-weighs-in-on-ups-plane-black-box-discovery