Hurricane Bertha - Storm Surge

July 11-13, 1996


This storm surge information is based on computer simulations using the coastal circulation/water level model ADCIRC. This computer model has been developed by Dr. Rick Luettich @ University of North Carolina at Chapel Hill, Institute of Marine Sciences, and by Dr. Joannes Westerink @ University of Notre Dame, Dept. of Civil Engineering and Geologic Sciences. Inputs to the model include the coastline geometry, water depths, the hurricane storm track and the hurricane central pressure. A hurricane wind field is synthesized from the storm information and used to drive ADCIRC.

Results are shown as color contour plots of water level from a large scale model run covering the western North Atlantic, Gulf of Mexico and Caribbean Sea and a smaller scale model run covering the Albemarle-Pamlico Sounds and the adjoining rivers in coastal North Carolina.

IMPORTANT NOTE: The ADCIRC model has been run for several historical hurricanes and computed surges have compared favorably with measured water levels. However, no systematic attempt has been made to verify the surges computed for Hurricane Bertha. In these runs, one of the largest areas of uncertainty in the surge computations is the program that synthesizes the hurricane wind field using only the storm track and central pressure.

Storm Track

Results from the Western North Atlantic, Gulf of Mexico and Caribbean Sea Domain

Results from the Albemarle-Pamlico Sounds, North Carolina, Domain




If you have questions or comments, please contact Rick Luettich (rick_luettich@unc.edu).

Last updated November 4, 1996.



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