"foresight plan" like the one on the Oregon coast?"
Imagination, communication, simplification.
Imagine how much it will suck without any outside help. Preemptively
Complain. Pick one thing and try to do it. Repeat.
If you can take care of yourself with the grab bag idea that would
be a start.
The stores could be the basement. A lot of food goes bad after the
first day due to a lack of power to keep it refrigerated,
perhaps a couple of generators used a few hours a day could save
that a bit longer.
Water is important, there are some old wells around town, maybe do
some preventative maintenance on them so they are ready to use
along with some filters.
Perhaps securing some of the roof tanks a bit better so they don't fail
during an earthquake. They are excellent water storage.
Plastic tarps would have saved a lot of misery after Patricia, maybe
have a few of those around.
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