the 2017 atlantic hurricane season was the most active since 2012. it officially began on june 1 and ended on november 30. it was an extremely active and tragic season. with a damage total of at least $282.16 billion (usd), it was the costliest season on record. with over 3,300 deaths, 2017 was the deadliest season since 2005. more than 99.7% of the season's damage was due to harvey, irma, and maria. nate, was the worst natural disaster in costa rican history. harvey, irma, maria, and nate had their names retired due to their high damage costs and loss of life. featuring 17 named storms, 10 hurricanes, and 6 major hurricanes, the 2017 season is the fifth active season.