400 foot tsunamis don't just spontaneously appear. Something would have to cause it. And I'm afraid that this "something" would be a planet-ending event. All material preparation is wasted in that case. I'd concentrate on the spiritual preparation.
WARNING & DISCLAIMER:
SELECT AND USE OUTDOORS AND SURVIVAL EQUIPMENT, SUPPLIES AND TECHNIQUES AT YOUR OWN RISK. Information posted
on this forum is not reviewed for accuracy and may not be reliable, use at your own risk. Please
review the full WARNING & DISCLAIMER about information on this
site.