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The great Louisiana hurricane of August 1812



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Mock, Cary J. and Chenoweth, Michael and Altamirano, Isabel and Rodgers, Matthew D. and García Herrera, Ricardo (2010) The great Louisiana hurricane of August 1812. Bulletin of the American meteorological society, 91 (12). pp. 1653-1663. ISSN 0003-0007

[thumbnail of garciaherrera14libre.pdf]

Official URL: http://dx.doi.org/10.1175/2010BAMS2937.1


Major hurricanes are prominent meteorological hazards of the U.S. Atlantic and Gulf coasts. However, the official modern record of Atlantic basin tropical cyclones starts at 1851, and it does not provide a comprehensive measure of the frequency and magnitude of major hurricanes. Vast amounts of documentary weather data extend back several centuries, but many of these have not yet been fully utilized for hurricane reconstruction. These sources include weather diaries, ship logbooks, ship protests, and newspapers from American, British, and Spanish archives. A coordinated effort, utilizing these historical sources, has reconstructed a major hurricane in August 1812, which is the closest to ever pass by New Orleans, Louisiana, including Hurricane Katrina. The storm became a tropical depression in the Caribbean Sea, passed south of Jamaica as a tropical storm, and then strengthened to hurricane strength in the Gulf of Mexico. It made landfall about 65 km southeast of New Orleans and passed just to the west of the city. Historical storm surge and damage reports indicate it as a major hurricane at landfall. Given that conditions during 1812 include having lower sea level, higher land elevation prior to human-induced subsidence, and more extensive wetlands, a recurrence of such a major hurricane would likely have a greater detrimental societal impact than that of Hurricane Katrina. The 1812 hurricane study provides an example of how historical data can be utilized to reconstruct past hurricanes in a manner that renders them directly comparable with those within our modern record.

Item Type:Article
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© 2015 American Meteorological Society. We gratefully acknowledge Ann Wakefield, Howard Margot, and many others for help in obtaining archival data, and Dennis Wheeler, Lesley-Ann Dupigny-Giroux, Richard Campanella, David Bastian, Vicky Slonosky, Anuj Patwardhan, Stephanie Dodds, and three reviewers for help and discussions in various stages of the research. This research is supported by NSF Grant ATM-0502105.

Uncontrolled Keywords:Regional impacts; Perspective; Landscape
Subjects:Sciences > Physics > Astrophysics
Sciences > Physics > Astronomy
ID Code:34493
Deposited On:26 Nov 2015 13:35
Last Modified:10 Dec 2018 15:05

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