Now that I think on it...I wish more writers today would give a basic notation on what was occurring during a specific and seemingly complex feat much like how Claremont described her Galactic Core and Jovian Pressure Dome feats...although not to such expository lengths. Just so that readers aren't left speculating on What and How it happened.
For that Tsunami page, there could just be a single caption box that read:
"For a mile across the air pressure drops to an unimaginable degree...all is still. Then, as the great force of wind rushes in..."