These signs are posted all over the coast of Northern California, even in Crescent City.
Yeah. What happened there after the Japan quake was nothing, really.A couple years ago, in the concrete-bunker hallways of the Humboldt State University Marine Laboratory at Trinidad Head, I came across this nifty poster: Tsunamis and Crescent City. Not being detail-oriented and having ADD, I didn't actually read it, just clicked and saved it for later... just kidding! Actually, reading it helped me to understand why all the tsunami warning signs were everywhere. You can read it too--full size, go here: *picture link*
Far be it from me to say that anyone should know better, but, really: how many people knew about the tsunami hazards before this recent Japanese earthquake?
It is sad that it seemingly takes tragedy to bring such anywhere near the forefront of our consciousnesses. May we learn from it and do better.
EDIT: updated picture link