[RightWhale]

How is a 23 foot wave the "Big One"?

If it is 23 feet out in the deep ocean and covers a large area, it represents a huge mass of water. By the time it reaches shore and piles up on itself it can be hundreds of feet high and crash far inland.

[clamper1797]

I would believe 700 feet high and 300 miles inland

[U S Army EOD]

But this one only came in about a 1000 feet.