Hurricane Tammy was a long-lived Atlantic Ocean tropical cyclone in October 2023 that caused minor impacts across the Leeward Islands and Bermuda. The twentieth named storm and seventh hurricane of the 2023 Atlantic hurricane season, Tammy originated from a late-season tropical wave off the coast of West Africa that developed into a tropical storm on October 18. By October 20, Tammy became a hurricane in the tropical Atlantic—which is very uncommon for the month of October, as conditions usually become too hostile for such storms by this point—and continued to intensify, aided by record warm sea surface temperatures. The hurricane then made landfall on Barbuda the next day. Afterwards, the hurricane slowly moved northwest paralleling the Leeward Islands, remaining steady in intensity for several days. On October 25, as the system began to accelerate northeast ahead of an approaching trough, Tammy intensified and peaked as a Category 2 hurricane with maximum sustained winds of 105 mph . The peak was short-lived as the same trough induced an extratropical transition that evening, which it completed by the following day. Later, Tammy briefly re-attained tropical characteristics on October 27, moving eastward away from Bermuda. Weakening commenced again, and Tammy degenerated into a post-tropical cyclone on October 29, dissipating the following day.