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Link to the Reanalysis Data

The Atlantic Hurricane Database Re-analysis Project is an effort to extend and revise the National Hurricane Center's North Atlantic hurricane database (or HURDAT). Going back to 1851 and revisiting storms in more recent years, information on tropical cyclones is revised using an enhanced collection of historical meteorological data in the context of today's scientific understanding of hurricanes and analysis techniques.

To receive email updates about progress in the Atlantic Hurricane Re-analysis Project, send an email to Chris Landsea.

What's New

April 2016 - FIU and NHC researchers publish "A Reanalysis of Hurricane Camille". Radar loop of "Hurricane Camille".

March 2016 - The 2015 best tracks for the Northeast Pacific basin have been added into HURDAT2. Note: storms that formed within the Central Pacific Hurricane Center's area of responsibility are not included in this update.

February 2016 - The 2015 best tracks for the Atlantic basin have been added into HURDAT2.

February 2016 - The 1959 Manzanillo hurricane - the deadliest and most destructive landfall in the Eastern Pacific basin - has been officially reanalyzed by Andrew Hagen, Josh Morgerman, Erik Sereno Trabaldo, and Jorge Abelardo Gonzalez. Minor track changes and major intensity revisions were made, including a downward adjustment from Category 5 to Category 4 on the Saffir-Simpson Hurricane Wind Scale for the hurricane at landfall.

October 2015 - P. J. Klotzbach and C. W. Landsea, 2015: Extremely intense hurricanes: Revisiting Webster et al. (2005) after 10 years. Journal of Climate, 28, 7621-7629.

September 2015 - The 2014 best tracks for the Northeast/North Central Pacific basin have been added into HURDAT2.

May 2015 - A complete re-analysis of the Atlantic hurricane database (HURDAT) was conducted for the 1951 to 1955 seasons. Revisions to the hurricane database were accomplished by obtaining the original observations collected - mainly by ships, weather stations, and the early Hurricane Hunter Navy and Army Air Force aircraft reconnaissance planes - and assessing the storms based upon our understanding of hurricanes today. The reanalysis also allowed "discovering" of tropical storms and hurricanes that occurred, but were not yet officially recognized as such in the official records. Nine hurricanes were identified to have struck the continental United States during 1951 to 1955, with one new U.S. hurricane (Hazel in 1953) identified and two hurricanes no longer considered to be hurricane impacts in the United States (Carol in 1953 and Diane in 1955). Originally, five of these hurricanes were considered to be a major hurricane - Category 3, 4, or 5 on the Saffir-Simpson Hurricane Wind Scale - at U.S. landfall. After the reanalysis, only two were retained as major U.S. hurricanes: 1954's Carol that struck New York, Connecticut, and Rhode Island as a Category 3 and 1954's Hazel that struck South Carolina and North Carolina as a Category 4. Three other systems were downgraded to a Category 2 at U.S. landfall: 1954's Edna in Massachusetts, 1955's Connie in North Carolina, and 1955's Ione in North Carolina. The worst hurricanes during these five hurricane seasons were 1954's Hurricane Hazel which killed as many as 1200 people in Grenada, Haiti, United States, and Canada and 1955's Hurricane Janet which killed 681 people in Barbados, Belize, and Mexico. Janet also holds the distinction of being the strongest hurricane observed during these seasons, reaching Category 5 with peak sustained winds of 175 mph at its landfall in Mexico. In addition, twelve new tropical storms were discovered and added into the database for this five year period. Andrew Hagen, Sandy Delgado, Donna Sakoskie, Astryd Rodriguez, Brenden Moses, Chris Landsea, and the Best Track Change Committee all made substantial contributions toward the reanalysis of these hurricane seasons. This research is supported in part by the NOAA Climate Program Office.

Archive of What's New

  1. Re-analysis results:
    1. Documentation for 1851 to 1910
    2. Documentation for 1911 to 1920
    3. Documentation for 1921 to 1930
    4. Documentation for 1931 to 1943 (Supplemental Information)
    5. Documentation for 1944 to 1953
    6. Data
  2. How to submit changes to the HURDAT
  3. Hurricane Andrew's Upgrade
  4. Re-assessment of Hurricane Donna (1960) in Florida
  5. U.S. Hurricane History by State (NWS sites)
  6. HURDAT Reanalysis Related Publications
  7. Publications of Chris Landsea
picture from Florida's Hurricane History
Picture from: "Florida's Hurricane History", by Jay Barnes
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