Tidal anomaly

Tidal Anomaly: Actual water level minus the tide table predictions.
Tidal Cycle: The periodic changes in the intensity of tides caused primarily by the varying relations between the earth, moon, and sun.

There are 3 types of thunderstorms. They are the following:
Single Cell Thunderstorms,
Multicell Thunderstorms, and
Severe Supercell Thunderstorm.
Tidal Anomaly Actual water level minus the tide table predictions.

See also: Low, Likely, Meteor, Flood Stage, Flood Warning