Water has been known to surge more than 170 feet [50 m] above the normal sea level and carry debris, fish, and even chunks of coral thousands of feet inland, obliterating everything within its path.
ولكن من الشائع اكثر ان تظهر كغمر شبيه بموجة مدّ تتخطى كثيرا حدود ذروة المدّ العادي .‏