Johathan Miller

The 2023 Atlantic hurricane season was the fourth-most active Atlantic hurricane season on record with 20 named storms forming, tied with 1933. Among them, 7 became hurricanes, with 3 reaching major hurricane strength. The season also had an above‑normal accumulated cyclone energy (ACE) rating of 148.2, despite the presence of the 2023–24 El Niño event, which typically results in less activity, and had the most storms for an El Niño year on record, largely due to record-warm sea surface temperatures across the Atlantic. The season officially began on June 1 and ended on November 30. These dates, adopted by convention, historically describe the period in each year when most tropical cyclogenesis occurs in the Atlantic. However, the formation of subtropical or tropical cyclones is possible at any time of the year, as demonstrated by the formation of a subtropical storm on January 16, the earliest start of an Atlantic hurricane season since Hurricane Alex in January 2016. Because the system was operationally assessed as non-tropical by the National Hurricane Center (NHC) and designated after the fact, it went without a name.