![]() landfall near Biloxi, MS on September 28. Georges did extensive damage to Haiti, the Dominican Republic, Puerto Rico and other Caribbean islands. Hurricane Georges (September 15 - October 01, 1998) Louisiana damage was severe south of Empire, LA. Structural damage at landfall was near complete. Storm surge reached 2.7 m (9 ft) in the Rigolets and 1.4 m (4.6 ft) in Mandeville, LA. A 4.6 m (15 ft) storm surge inundated Boothville, LA. The storm surge exceeded 24 ft in Pass Christian, MS. The storm surge generated by Camille flooded areas from lower Plaquemines Parish, LA to Perdido Pass, AL. ![]() Atmospheric pressure at landfall was 901 millibars, second only to the Labor Day Hurricane of 1935 (892 millibars) as the most powerful storm ever to reach the U.S. Wind estimates during landfall reached 175 mph. The small-diameter hurricane headed NE at 14 mph and made landfall in a sparsely populated section of the Mississippi coast on August 17. The Orleans Levee Board raised the existing levee to a height of 12 ft in response to the flooding caused by Betsy.Ĭamille intensified rapidly in the Gulf of Mexico, reaching Category 5 status by August 16. Damage in Southeast Louisiana totaled $1.4 billion. Loss of life from Betsy was a total of 81 persons, with 58 in the state of Louisiana. Offshore oil rigs, public utilities, and commercial boats all suffered severe damage. Winds reached 100 mph over most of southeast Louisiana and exceeded 60 mph as far inland as Monroe, LA. Winds gusted to 125 mph in New Orleans with a 3.0 m (9.8 ft) storm surge that caused the worst flooding in decades. Grand Isle experienced 160 mph gusts and a 4.8 m (15.7 ft) storm surge that flooded the entire island. The central pressure at landfall was 948 mb. As a result of this storm, hurricane protection levees were built along the south shore of Lake Pontchartrain to protect Orleans and Jefferson Parishes from future storm surges.īetsy was a fast moving storm (22 mph forward speed) that made landfall at Grand Isle, LA on September 10, 1965. New Orleans suffered $100 million in damages. Moisant Airport fields were under 0.6 m (2 ft) of water while Jefferson Parish was flooded to depths of 1.0 m (3.28 ft). A storm surge of 3.0 m (9.8 ft) reached Shell Beach, Lake Borgne. Wind gusts of 112 mph and a central pressure of 967 millibars (mb) were measured at Moisant International Airport. The 1947 Hurricane made landfall near the Chandeleur Islands, LA on September 19, 1947. The four storms in the figure below represent some of the most devastating, and therefore some of the most studied storms, in the Lake Pontchartrain Basin during the Twentieth Century.įigure 25: Hurricanes 1947, Betsy, Camille and Georges For these and many other reasons, it is important to study past tropical storm events so that we can be better prepared for future events. The Basin is home to more than one million people and is extremely important to the vitality of the Gulf of Mexico ecosystem. Furthermore, storm vulnerability is made worse by ongoing wetland loss and barrier island erosion. The levee system in New Orleans is one of the most extensive in the world, but it is designed for a Category 3 hurricane maximum. The city of New Orleans averages 1.8 m (6 ft) below sea level, resembling a shallow depression surrounded by levees and water. Hurricanes with significant monetary or human loss are memorialized by retiring their name (Table 8). Hurricanes have affected the Louisiana coastline with a frequency that peaks in September (Tables 5, 6). Hurricanes are categorized by their windspeed in miles per hour (mph) (Table 4). Tropical Cyclones of the Louisiana CoastĪs a result of its elevation near sea level, the Lake Pontchartrain Basin is quite vulnerable to tropical storms and hurricanes.Recent Hurricanes Producing Significant Basin Damage. ![]() Physical Environments - Hurricane History Contributors: Yamazaki, Penland Physical Environments: Climate | Hurricane History | Circulation | Wave Climate | Relative Sea Level | Relative Sea Level Rise Environmental Atlas of Lake PontchartrainĬoastal & Marine Geology Program > Center for Coastal & Regional Marine Studies > Environmental Atlas of Lake Pontchartrain Environmental Atlas of the Lake Pontchartrain Basin Lake Pontchartrain Basin Atlas Home
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