Earthquakes, tornadoes and hurricanes can cause you to leave your home or even be trapped there. Roads could be blocked due to fallen trees, power lines, or even damaged earth from the natural disaster. Rescue crews can not be in all places at once. You may have to wait it out for quite a while before its over. You won't be able to go to the store or to the corner market.
As Huffman, of Reddit, observed, our technologies have made us more alert to risk, but have also made us more panicky; they facilitate the tribal temptation to cocoon, to seclude ourselves from opponents, and to fortify ourselves against our fears, instead of attacking the sources of them. Justin Kan, the technology investor who had made a halfhearted effort to stock up on food, recalled a recent phone call from a friend at a hedge fund. “He was telling me we should buy land in New Zealand as a backup. He’s, like, ‘What’s the percentage chance that Trump is actually a fascist dictator? Maybe it’s low, but the expected value of having an escape hatch is pretty high.’ ”

While survivalists accept the long-term viability of Western civilization, they learn principles and techniques needed for surviving life-threatening situations that can occur at any time and place. They prepare for such calamities that could result in physical harm or requiring immediate attention or defense from threats. These disasters could be biotic or abiotic. Survivalists combat disasters by attempting to prevent and mitigate damage caused by these factors.[31][32]
Car electricity runs on direct current, but almost everything else is alternating current. What you need: an inverter. Some cars have them built in, but you can get one at a store for less than $40. Use the clamps to attach the inverter directly to the terminals on your car battery. Let the car run at idle and you have 110-volt AC power for as long as you have gas. With a 300-watt inverter, you'll have enough amps to run a laptop or even a television.