The list of things we save is extensive for some people, but in an emergency cut and run situation it often boils down to what you can grab and run with. So for everyone I suggest this one simple method. Prepare a 20 gallon tote bin. Now just to be clear, we aren't talking about your average blizzard or hurricane. No sir, what this little lesson in preparedness is for would be more akin to WW3, Armageddon, Ragnarok, Zombie Apocalypse, your sister inlaw coming over to stay for two weeks, or a global flood.
You will need 3 easy things to grab.
First “The Bin.” and you put in it.. ..
A pot for cooking.
Dried Food Goods. (beans, rice, jerky etc.)
A book on local edible plants.
That bin is the first thing you grab.
The two others.
A Backpack loaded with clothes, rope, and a small emergency first aid kit.
Finally a single gun case, with at least 3 boxes of good hunting ammo inside of it with the gun. Pick a good versatile gun. Something like a .223 or .243 that can be used to hunt medium to large game with normal ammo. Or you can buy lower grain ammo for smaller game. Between the gun case, the backpack, and the bin you can grab them and head for high ground in a single swoop, and with only one arm full of stuff.
The next step, toss it in your preferred mode of transportation, and if you are in a populated area, like a city, or a suburb… haul ass. Head for high ground. When the bedlam breaks out, and it's a survival situation, state parks are your friend. There is no populated areas in most of them, and you can go occupy a hilltop, or a secluded mountainside as far off into the center of it as you can get. This is one of those situations where an All Wheel Drive camper van, would be the ideal vehicle. Either way, whether you have a Honda Civic, a pickup truck, or a camper, you get as far in there as you can and turn the engine off. This area is your new home, at least temporarily. You may want to plan different routes to this destination in advance, use Google maps and find an area in the park with running water. When you get there, you have water and a few weeks worth of food with the dried goods. That will give you time to get to know the local wildlife, and where to forage and hunt for your other foods.
I'm not a meteorologist, or a psychic.
I just observe things.