[1] Though a majority of these cyclones have fallen within climatological averages, prevailing atmospheric conditions occasionally lead to anomalous tropical systems which at times reach extremes in statistical record-keeping including in duration and intensity.
[2] The scope of this list is limited to tropical cyclone records solely within the North Atlantic Ocean and is subdivided by their reason for notability.
[4] Although this modern invention was now available, the systems were initially not fully active enough to provide daily images of the storms.
[5] Data for the North Atlantic region remained sparse as late as 1964 due to a lack of complete satellite coverage.
The most active Atlantic hurricane season on record in terms of total storms took place in 2020, with 30 documented.
[8] December, the only month of the year after the hurricane season, has featured the cyclogenesis of fourteen tropical cyclones.
[11][9][nb 2] The Atlantic hurricane season presently runs from June 1 through November 30 each year, with peak activity occurring between August and October.
Generally speaking, the intensity of a tropical cyclone is determined by either the storm's maximum sustained winds or lowest barometric pressure.
[55] Nonetheless, the pressure remains too high to list Opal as one of the ten strongest Atlantic tropical cyclones.
[11] Currently, Hurricane Wilma is the strongest Atlantic hurricane ever recorded, after reaching an intensity of 882 mbar (hPa; 26.05 inHg) in October 2005;[53] at the time, this also made Wilma the strongest tropical cyclone worldwide outside of the West Pacific,[56][57][58][59][60] where seven tropical cyclones have been recorded to intensify to lower pressures.
[11] However, with a barometric pressure of 895 mbar (hPa; 26.43 inHg), Rita is the strongest tropical cyclone ever recorded in the Gulf of Mexico.
Currently, Mitch and Dean share intensities for the eighth strongest Atlantic hurricane at 905 mbar (hPa; 26.73 inHg).
[63] Hurricane Maria is in tenth place for most intense Atlantic tropical cyclone, with a pressure as low as 908 mbar (hPa; 26.81 inHg).
[66] Many of the strongest recorded tropical cyclones weakened prior to their eventual landfall or demise.