The tribe in question was taught to run for the hill after a earth quake, as I recall lot's of freeper were posting "surfs up" when news of a big earth quake in the Indian Ocean hit FR. Not rocket science but alot of people never listen to the news and a big low tide in and of itself doesn't alway mean a 25' tsunami.
True, but a low tide is one thing -- it's predicted in the tidebooks! And it happens slowly, surprising no one. Thank God I have never experienced a tsunami, though I had enough dreams about them as a kid. In one dream, the tsunami killed me, and was flying over the remains of my town looking down at the damage. No ... I still think that if I saw all the water drain out of the bay, I'd head for the hills, just on instict. I guess I'd better not move to Texas! (did you see that post from the guy who said the water drained out of his bay several times a year?! Wow!)