Weathered S04E07 - What's the One Thing You Can Do To Survive a Tsunami?

While tsunamis happen all over the world, really big ones are rare. But, they can be truly devastating. And what's more, the West Coast of North America is overdue for a subduction zone earthquake and tsunami that has the potential to be the biggest disaster the U.S. has ever seen. So, what is the single most important factor determining whether or not YOU survive a tsunami?