Storm surges are created by strong winds and barometric pressure differences. Strong winds blowing toward the land causes water to be pushed up against the shores. Having a pressure difference between two points can also create storm surge. An example would be a hurricane, in which case, there is an extreme low pressure at the center with the pressure increasing as you move outwards from the center. This change in pressure causes a bulge of water under the low pressure center. The rise in sea level due to storm surge combines with the tides and can cause a rise of mean sea level of up to 15 feet. This rise can cause extreme flooding is regions along the coast, especially when the storm surge occurs at a high tide. Coastal topography also effects how vulnerable an area will be to flooding. Low lying flat areas are more susceptible to inundation than steeper coastal regions.

Disclaimer: This model is under developmentand predictions for sea level height are for research purposes only. They should never be used for navigational purposes or emergency planning under any circumstances.
The Eppley Foundation for Research, Inc.