Gas Shortage Hits Western NC

The question is how long it will take suppliers to catch up -- a tall order considering that many stations have emptied their tanks or fallen to lower-than-normal levels during the past two weeks.
"I think we'll see three to four weeks of improving conditions," said Pete Sodini, president and CEO of The Pantry, the Sanford chain that owns more than 1,600 convenience stores throughout the Southeast. "In four weeks, we'll be back to normal."

Until then, stations will continue to be pinched, especially for premium gas.

(Emphasis mine - It looks like it will be several weeks before things get back to normal, with premium and mid-grad worse than regular.)

Is there any word on this spreading, or should it remain restricted primarily to the currently affected areas?

I would expect it to spread as it gets fixed in the Atlanta area. The amount of gasoline going in doesn't seems to be adequate. It is the old "whack-a-mole" problem. If there is not enough to go around, and you get the problem sort of fixed for one participant, someone else will be left without.