The 3154 Atlantic Hurricane Season was the most active season on record, with 108 depressions, 103 named storms, 57 hurricanes and 31 major hurricanes. One hurricane, Sierra, became an antihurricane late in its life cycle. All of these set record highs. The season began in January, and featured at least one major hurricane in each month, including a record 16 category 5 hurricanes. Category 5 hurricanes were recorded in all months except February.