The 21 major tidal potential constituents are listed with their respective periods in Table 1. The tidal regimes of the Gulf of Mexico are shown in Figure 1. Being located on the northern Gulf, the Mississippi Sound has tides that are primarily diurnal, i.e. usually only one high water and one low water per day. The tides of the Mississippi Sound are modified by the bathymetry, geometry of the basin, river outflow, and winds. Sustained south and southeast winds push water into the Sound piling it against the mainland.
North winds have the opposite effect, driving the water out.
Major tidal potential constituents. Tidal regimes of the Gulf of Mexico. A Hydrographic and Climatic Atlas .