Well I live in North Dakota, so that takes a big load off my end right from the start.
We won't ever have a hurricaine up here. (Whew)
Tornado's, well other than get to shelter, and deal with whatever is left, not much you can do.
Flood, we bought this house in 96 when Fargo was under some flooding, and Grand Forks had major Fire & Water going on. We are on one of the few naturally high spots in the valley. In short, we are going to be among the last ones going down. Plus we have 3 kayaks so worst case situation we can make it out to high ground.
I have an alternative heat source rigged for burning corn/wood pellets. Enough to keep the house from freezing the pipes even with out natural gas/electricity. Covered on that end.
We have several containers of water that get cycled every so often. Plus in a worst case situation our 50 gal nat gas water heater would carry us for a while for drinking water.
Food, we could probably manage for 3 - 4 months without any outside aid.
Would help if electricity stayed on for a week or so. But even so, we have enough beans, rice, flour, sugar, and canned goods to manage quite nicely for a long while.
I started stockpiling staples for the Milenium, and we havn't quit, we just cycle things out. Example, if we buy a bag of sugar at the store, new one gets bagged, goes on shelf, old sugar comes out and gets used.
I know we currently have at least 25lbs of rice, 10lb's of beans. It may get old but beans & rice will keep you alive for a LONG long time if needed. Suppliment that with some of the canned fruit and veg's and we are in good shape.
Shotguns I have 3 and ammo for all. Also a .22 rifle and pistol with a couple hundred rounds. Should have more ammo for these. Tools, we are in good shape, with full loadout of gear for camping/kayaking. If we need it, we have it.
Live for today, but plan for the worst. No gloom and doom, just common sense.
I grew up with 3 -4 day blizzards stacked up one behind the next. Getting out in those conditions just doesn't always happen. So best to have what you need on hand.
As to massive civil unrest, bar & board the windows and doors. Hunker down out of sight, sound, and smell, let it pass you bye. Anyone trying to break in would be dealt with quite harshly.