When they talk about land sliding into the sea like that, it boggles my mind that massive tsunamis can be created, spreading out thousands of miles. But if a 30 meter tsunami did the amount of damage that it did to Japan, can you imagine what a 300 meter or even 300' tsunami would do?
Just don't know when, but they'll happen.
PS:
Just watched a video on the news of that meteor over Iowa, it was a burner, LOL.