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
- 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.
February 2015 - The 2014 best tracks for the Atlantic basin have been added into HURDAT2.
January 2015 - Sandy Delgado's 841 page
Master's Thesis on "Reanalysis of the 1954-1963 Atlantic hurricane seasons"
is now available.
Archive of What's New
- Re-analysis results:
Documentation for 1851 to 1910
Documentation for 1911 to 1920
Documentation for 1921 to 1930
- Documentation for 1931 to 1943
Documentation for 1944 to 1953
- How to submit changes to the HURDAT
- Hurricane Andrew's Upgrade
- Re-assessment of Hurricane Donna
(1960) in Florida
- U.S. Hurricane History by State (NWS sites)
- HURDAT Reanalysis Related
Publications of Chris Landsea
Picture from: "Florida's Hurricane History", by Jay Barnes