I don't post in SF much, but since we just had a SHTF event to my immediate south I thought I would share my observations.
I live in Southern TN, not far from the AL state line. Madison County AL, which contains the City of Huntsville, was torn up in several populated places wreaking havoc on the electrical system. 300,000 people without power come morning, and it could be as much as 5 days before the power is back on. Here in Lincoln County TN Population 50,000, we had only light damage, and no real loss of electrical power. TVA cut power to Madison County AL last night due to all the electrical system damage, and as of this post AFAIK, none of it has been restored. I work in Huntsville and was notified early this morning not to come to work and they will let me know when to show up. So needless to say they have a real SHTF situation going on there right now.
My wife wanted to drive to Fayetteville, TN, the only really large town in Lincoln county, to pick up a few groceries for the weekend in case some of the Huntsville folks I've invited to come stay do show up. I thought it was a bad idea, and that we should go to another town farther away from Huntsville and the 300,000 folks who are in get what they can mode. We decided to go to Fayetteville first and then go to Tullahoma if we needed to, turned out that we didn't. So my observations follow.
Gas - lines at every station in town, long lines, because there is no fuel available in Madison County.
Wal-mart was pretty well stocked, items cleared from the shelves were potato Chips, Cereal, canned meats (Spam/potted meat/vienna sausage), bread, flashlights and batteries, lanterns, camp stoves, bottled water, water containers, coolers, and propane bottles.
Pretty much everything else was well stocked or being stocked. There's a Wal-Mart distribution center only about 30 miles away so I'm sure that helped, but I was pretty surprised that the store wasn't void of anything to eat. Obviously not all 300,000 came to Fayetteville, but I'd be willing to bet the population of Lincoln County has tripled.
For localized SHTF, your stores should definitely include fuel, if I had to get some today it wouldn't be a sure thing and I have heard they were limiting how much one vehicle could buy but I haven't confirmed it.
Hope this helps.