a tropical storm and three hurricanes. One of those, the season's sixth tropical cyclone, became the most intensity system in the Atlantic basin in 1916 and peaked at Category 4 intensity on the modern-day Saffir–Simpson scale with maximum sustained winds of . In terms of barometric pressure, the storm was also the most intense to strike the United States since the 1886 Indianola hurricane. Four tropical systems also developed in September, with one tropical depression, one tropical storm, and two hurricanes. October was the most active month of the season, featuring two tropical depressions, one tropical storm, and two hurricanes. In November, a tropical storm developed on November 11 and transitioned into an extratropical cyclone by November 15, ending season activity. The 1916 was a fairly active season, especially for the time. Eighteen tropical cyclones formed during the course of the year, fifteen of which reached at least tropical storm intensity – the most in one season since 1887. Ten of those tropical storms strengthened into hurricane and five of those intensified into major hurricanes, both being the highest number in a season since 1893. Nine systems of at least tropical storm intensity made landfall in the United States during the season, which remained a record until eleven struck the United States in 2020. The 1916 season was one of only two to feature multiple major hurricanes before the month of August, the other being 2005. However, because the early 20th century lacked modern forecasting and documentation, the official hurricane database may be incomplete. The Atlantic hurricane reanalysis project in 2008 uncovered evidence for two tropical cyclones not previously in the database, Tropical Storm One and Tropical Storm Five. A system previously classified as a tropical storm in the database was downgraded to a tropical depression as part of the project. Additionally, the project also downgraded Tropical Storm Fifteen from hurricane intensity. Collectively, the tropical cyclones of the 1916 Atlantic hurricane season caused at least 272 deaths and $47.59 million in damage. The season's activity was reflected with an accumulated cyclone energy (ACE) rating of 144, the highest total since 1906 and far above the 1911–1920 average of 58.7. ACE is a metric used to express the energy used by a tropical cyclone during its lifetime. Therefore, a storm with a longer duration will have high values of ACE. It is only calculated at six-hour increments in which specific tropical