2021 Atlantic hurricane season (Cooper's Version)

The 2021 Atlantic hurricane season was the final year in a consecutive string of three very active seasons. The season officially began on June 1 and ended on November 30. These dates historically describe the period of year when most tropical cyclones form in the Atlantic basin. However, the season's first storm, Ana, developed on May 19, over a week before the season officially began. The season concluded with Hurricane Sam transitioning to an extratropical cyclone on December 4.

A total of 18 named storms formed during 2021, with 10 of them becoming hurricanes and 5 becoming major hurricanes, a total above the seasonal average. In late August, Hurricane Henri struck the Yucatán Peninsula as a Category 4 hurricane with devastating impact. In early September, Hurricane Kate struck Central America just less than a year after Hurricane Omar devastated the region. In early December, Hurricane Sam became the latest major hurricane ever recorded in the Atlantic basin, as well as the first to occur outside the season's official boundaries.

Storm names
The following list of names was used for named storms that formed in the North Atlantic in 2021. The names not retired from this list were used again in the 2027 season. This was the same list used in the 2015 season, with the exceptions of Elsa and Julian, which replaced Erika and Joaquin, respectively. The names Elsa, Julian, Rose, and Sam were used for the first time this year.

Retirement
On March 30, 2022, at the 44th session of the RA IV hurricane committee, the World Meteorological Organization retired the names Henri, Kate, and Nicholas from its rotating name lists due to the amount of deaths and damage they caused, and they will not be used again for another Atlantic hurricane. They were replaced with Horatio, Kendra, and Neil for the 2027 season.