Interesting that you use the term hoard. It's an emotion laden, somewhat judgmental, term, negative in its context, and usually used by debunkers to put a negative spin on what they're debunking.
I personally prefer the word food storage. My grandparents did it, farmers have done it for generations, current day LDS members do it, and in my opinion, any sane and sensible person will have a certain amount of supplies stored (which they rotate), since we are now living in a JIT world, and grocery stores have about - oh, 3 days worth of supplies on their shelves. Ask the people in New Orleans, after Katrina, whether they would have liked to have additional food and water stored, other than what was in their house/water pipes the day the storm hit...
There are natural "disasters" every year - hurricanes, earthquakes, major storms, etc. One can be prepared, or one can be a burden on society - waiting for a government who is also not prepared (saw that in both Andrew and Katrina) to come and "save" them.
Running? No one that I know is running (although I obviously don't know everyone) - however there are two theories of geologic change. One is rather like the theory of evolution - things happen slowly, etc. The other is catastrophic - where change can happen suddenly in catastropic events. I subscribe to the latter, since there is evidence it has occurred, and there seems to be a lot of it happening now - earthquakes have increased, tornados have increased, etc. Therefore, I will be prepared. Have a couple of years of food, etc.
Evidence? Well, if you want just straight non-metaphysical evidence, look at the caldera that suddenly exploded in South America earlier this year - what, a 1 in 10,000 year event??. I would be concerned (since your profile says you're from Oregon) about the series of earthquakes off the Oregon coast. Something is occurring there....
If you want to look at a more quasi-science side, the half past human guys with their predictive linguistics would fill the bill.
Metaphysically, there are numerous "predictions" from the Hopi Indians to Cayce to Ramtha -
However, my experience is that if you are a "debunker," then no matter what I say will be acceptable. However, it's my reality, and on the whole I'm willing to bet on my reality before I'm willing to bet on yours
alys