A subtropical cyclone is a cyclone with winds equivalent to a tropical storm, but without all the characteristics of a tropical cyclone. Such storms are usually weak, short-lived, form at mid-latitudes, and rarely affect land.Chris Landsea. Subject: A6) What is a sub-tropical cyclone? National Hurricane Center. Retrieved on July 11, 2022.
In the Atlantic Ocean, subtropical storms often form, with an average rate of one per few seasons. Since they started being tracked in the 1960s, there have been 31 of them. Subtropical storms started being named as a part of the regular season in 2002, though they were briefly given names from a different list in the 1970s.
This list does not include any subtropical cyclones that became tropical storms or hurricanes.
Systems NameDurationTypePeak intensityAreas affectedDamage(USD)DeathsRefs Wind speed PressureUnnamed Subtropical Storm None One Subtropical Storm Florida Alpha Subtropical Storm American Southeast Charlie Subtropical Storm None DeltaNovember 1 – 7, 1972 Subtropical Storm NoneAlfaJuly 30 – August 2, 1973 Subtropical Storm New EnglandOneJune 24 – 25, 1974 Subtropical Storm FloridaTwoJuly 16 – 19, 1974 Subtropical Storm NoneThreeAugust 10 – 15, 1974 Subtropical Storm NoneFourOctober 4 – 8, 1974 Subtropical Storm The Bahamas, FloridaTwoDecember 9 – 13, 1975 Subtropical Storm NoneOneMay 21 – 25, 1976 Subtropical Storm FloridaThreeSeptember 13 – 17, 1976 Subtropical Storm American SoutheastOneJanuary 18 – 23, 1978 Subtropical Storm NoneOne Subtropical Storm Newfoundland ThreeNovember 12 – 17, 1981 Subtropical Storm U.S. East CoastOneJune 18 – 20, 1982 Subtropical Storm Florida, U.S. East CoastOneAugust 18 – 21, 1984 Subtropical Storm NoneOneApril 21 – 24, 1992 Subtropical Storm None Unnamed None UnnamedOctober 25 – 29, 2000 Subtropical Storm New England, Atlantic CanadaNicoleOctober 10 – 11, 2004 Subtropical Storm Bermuda, Atlantic Canada, New EnglandUnnamedOctober 4 – 5, 2005 Subtropical Storm Azores Unnamed Subtropical Depression None AndreaMay 9 – 11, 2007 Subtropical Storm Virginia, Southeastern U.S., Bahamas UnnamedDecember 5 – 7, 2013 Subtropical Storm Azores Andrea Subtropical Storm Bermuda Rebekah Subtropical Storm Azores AlphaSeptember 17 – 19, 2020 Subtropical Storm Portugal, Spain Teresa Subtropical Storm Bermuda Unnamed Subtropical Storm Nova Scotia Karen Subtropical Storm None
Statistics
References