>>The hard part is 6 months of water, 1 gallon per person per day is 182 gallons of water per person for 6 months. Better start buying those quart bottles of water now<<

I have close to 300 gallons stored in my basement- not that hard to do, but I wouldn't try it with quart bottles. <img src="/images/graemlins/smile.gif" alt="" />

Most of it is in plastic 55-gallon drums, with a couple of "portable" (if you're the Incredible Hulk) 15-gallon drums, and a small collection of 5-gallon water cooler bottles that date from my apartment days (I've been trying to be prepared for some time now). That's not counting the 50 gallons of fresh water reserve in the water heater, of course.

For the record, I don't consider that anywhere near a 6-month supply of water (unless you're a Bedouin), and I would personally be very surprised if the earth suddenly shifts on it's axis. There certainly is the "precession of the equinoxes" thing, which is a 26,000 year cycle as mentioned (think of a wobbling top) but I've seen no evidence that it comes on suddenly.. as in, less than a few centuries.

Nothing's impossible, I guess, but there are other scenarios I would consider more likely. I think preparedness is in general a pretty good idea, but, IMHO, it's a mistake to obsess and prepare for any one specific threat. The idea, really, is that some of us hedge our bets a little against an unknown future- if the future were knowable, everyone would be prepared for it.