No shortages in Boston that I've heard of, but there are plenty of stations at $3.35 for self-serve regular. Hess stations still seem to all be around $2.55 - $2.60 for now, and that's the lowest I've seen. Don't mean for this to become a "post your gas prices" thread, but the jump is about $.50 in two days for many of these stations.
Well, actually this is interesting. Some places will have shortages and others will not. Right now, this depends on the upstream supplier, who may or may not have been impacted by the storm. Overall, this will come into balance at a much higher price >$4.00/gallon over the next couple of weeks.