With the collapse of a nuclear reactor and the explosion at the nuclear site, folks nearby are being evacuated. However, those farther away are being advised to stay inside in case of radiation fallout, yet few have any food or water supply to enable survival inside for very long. There are reports of hundreds of people outside grocery stores, drug stores and petrol stations. With roads in shambles, no electricity in many places, and few communication devices working, it will take time to get supplies to those people. Probably as long if not longer than the fiasco in New Orleans following Katrina.
This has put a kink in my own long-time preparedness: the location of many of my supplies. About half the food and most of the water I have stored is in my root cellar, which is a separate building from the house. In the event of a nuclear disaster, it could be unsafe to go outside to collect anything from that building. I have a spring for an alternate water supply, and some filters (or build a fire to boil water), but if it is unsafe to go outside, I'd be mighty thirsty quite soon.
It's something to think about. How prepared are you for an immediate and unexpected disaster?