The Atlantic hurricane season officially began on June 1, but activity in 1992 began more than a month earlier with the formation of Subtropical Storm One on April 21. It was a below average season in which 10 tropical or subtropical depressions formed. Seven of the depressions attained tropical storm status, and four of these attained hurricane status. In addition, one tropical cyclone eventually attained major hurricane status, which is below the 1981–2010 average of 2.7 per season. The low amount of activity is partially attributed to weaker than normal tropical waves, the source for most North Atlantic tropical cyclones. Only two hurricanes and one tropical storm made landfall during the season. However, damage from Hurricane Andrew was astronomical, causing most of the season's 106 deaths and $27.3 billion (1992 USD) damage toll. The last storm of the season, Hurricane Frances, became extratropical on October 27, over a month before the official end of the season on November 30.