King tide

The expression originated in Australia, New Zealand and other Pacific nations to describe especially high tides that occur a few times per year.

It is now used in North America as well,[1] particularly in low-lying South Florida, where king tides can cause tidal flooding.

Tides are the movement of water across Earth's surface caused by the combined effects of the gravitational forces exerted by the Moon, Sun, and the rotation of Earth which manifest in the local rise and fall of sea levels.

Earth moves around the Sun in an elliptic orbit that takes a little over 365 days to complete.

[3] The predicted heights of a king tide can be further augmented by local weather patterns and ocean conditions.