[5] Hurricane Laura produced catastrophic storm surge levels, heavy rainfall, and spawned over a dozen tornadoes after striking Louisiana on August 27 with winds of 150 mph (240 km/h).
[6] Causing significant late-season loss of life and widespread destruction were November hurricanes Eta and Iota, which made landfall in Central America as Category 4 storms just two weeks apart.
[7] In March 2021, the names Laura, Eta and Iota were retired from reuse in the North Atlantic by the World Meteorological Organization due to the extraordinary amount of damage and number of fatalities they caused.
[8] This timeline documents tropical cyclone formations, strengthening, weakening, landfalls, extratropical transitions, and dissipations during the season.
Additionally, figures for maximum sustained winds and position estimates are rounded to the nearest 5 units (knots, miles, or kilometers), following National Hurricane Center practice.