Earthquake

shaking of the earth caused by the
breaking and shifting of rock
beneath the earth’s surface.
Earthquakes strike suddenly,
without warning, and they can
occur at any time of the year, day or
night. Forty-five states and
territories in the United States are
at moderate to very high risk of
earthquakes, and they are located in
every region of the country.
http://www.redcross.org/images/MEDIA_CustomProductCatalog/m4240216_Earthquake.pdf

Considering a communications community, don't know any hunters - here is a few tips.
People that already have a communications community will gather at churches, shopping malls, or any large landmark worthy area. Know your geography - you already simulated the fire escape routes for your home or apartment - how about movement in terms of shoe power. Some basic steps to purifying stagnant water is chlorine dry  or bleach here is a site for more information
http://www.countrysidemag.com/issues/83/83-1/Countryside_Staff1.html

Hope your meet-ups go well. Here is a how stuff works http://science.howstuffworks.com/nature/natural-disasters/survive-earthquake2.htm


and a introduction to citizen band. http://survivalcache.com/emergency-communications-survival-radio/