noun
Meteorological term for an abnormal rise in sea level caused by a storm, especially a typhoon.
台風の接近で高潮に警戒が必要だ。
We need to be on alert for storm surges as the typhoon approaches.
高波 refers to high waves in general, while 高潮 specifically refers to a storm surge caused by meteorological conditions.
Compound of 高 (high) and 潮 (tide), literally 'high tide', but used specifically for storm surges.