Yes, in a situation as you describe where you would bug out once it was safe too, 72 hours of supplies would be fine. The storm died down around 4pm Saturday afternoon. Most urban and suburban roads were passable by noon the next day (men with chainsaws live for such events). I don't know about rural roads, though. But in under 24 hours you could have been on the road heading to safety. Gas was gone along the interstate but I've been told you could find it in at gas stations in the towns or on the sides of the towns away from the freeways.

-Blast