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. [1]
In the Atlantic Ocean, subtropical storms often form, with an average rate of one per few seasons. [1] Since they started being tracked in the 1960s, there have been 31 of them. [2] 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. [1]
This list does not include any subtropical cyclones that became tropical storms or hurricanes.
A subtropical cyclone is a cyclone with winds equivalent to a tropical storm, but without all the characteristics of a tropical cyclone. It is a type of subtropical cyclone. Such storms are usually weak, short-lived, form at mid-latitudes, and rarely affect land. [1]
In the Atlantic Ocean, subtropical storms often form, with an average rate of one per few seasons. [1] Since they started being tracked in the 1960s, there have been 28 of them. [2] 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. [1]
Name | Duration | Type | Peak intensity | Areas affected | Damage (USD) | Deaths | Refs | |
---|---|---|---|---|---|---|---|---|
Wind speed | Pressure | |||||||
Unnamed | September 14 – 23, 1968 | Subtropical hurricane | 85 mph (140 km/h) | 976 hPa (28.82 inHg) | None | None | None | [3] |
One | September 29 – October 3, 1969 | Subtropical Storm | 60 mph (95 km/h) | 995 hPa (29.38 inHg) | Florida | None | None | [4] [5] |
Alpha | May 23 – 29, 1972 | Subtropical Storm | 70 mph (110 km/h) | 991 hPa (29.26 inHg) | American Southeast | $100,000 | 2 | [6] [7] |
Charlie | September 19 – 21, 1972 | Subtropical Storm | 65 mph (105 km/h) | 1001 hPa (29.56 inHg) | None | None | None | [8] [9] |
Delta | November 1 – 7, 1972 | Subtropical Storm | 45 mph (75 km/h) | 1001 hPa (29.56 inHg) | None | None | None | [10] [9] |
Alfa | July 30 – August 2, 1973 | Subtropical Storm | 45 mph (75 km/h) | 1005 hPa (29.68 inHg) | New England | None | None | [11] [12] |
One | June 24 – 25, 1974 | Subtropical Storm | 65 mph (100 km/h) | 1000 hPa (29.53 inHg) | Florida | $10 million | 3 | [13] [14] |
Two | July 16 – 19, 1974 | Subtropical Storm | 50 mph (85 km/h) | 1006 hPa (29.71 inHg) | None | None | None | [15] [16] |
Three | August 10 – 15, 1974 | Subtropical Storm | 60 mph (95 km/h) | 992 hPa (29.29 inHg) | None | None | None | [17] [16] |
Four | October 4 – 8, 1974 | Subtropical Storm | 50 mph (85 km/h) | 1006 hPa (29.71 inHg) | The Bahamas, Florida | $600,000 | None | [18] [16] |
Two | December 9 – 13, 1975 | Subtropical Storm | 70 mph (110 km/h) | 985 hPa (29.09 inHg) | None | None | None | [19] [20] |
One | May 21 – 25, 1976 | Subtropical Storm | 50 mph (85 km/h) | 994 hPa (29.35 inHg) | Florida | $628,000 | None | [21] [22] |
Three | September 13 – 17, 1976 | Subtropical Storm | 45 mph (75 km/h) | 1011 hPa (29.85 inHg) | American Southeast | None | None | [23] [22] |
One | January 18 – 23, 1978 | Subtropical Storm | 45 mph (75 km/h) | 1002 hPa (29.59 inHg) | None | None | None | [24] [25] |
One | October 23 – 25, 1979 | Subtropical hurricane | 75 mph (120 km/h) | 980 hPa (28.94 inHg) | Newfoundland | None | None | [26] |
Three | November 12 – 17, 1981 | Subtropical Storm | 70 mph (110 km/h) | 978 hPa (28.88 inHg) | U.S. East Coast | None | None | [27] [28] |
One | June 18 – 20, 1982 | Subtropical Storm | 70 mph (110 km/h) | 984 hPa (29.06 inHg) | Florida, U.S. East Coast | $10 million | 3 | [29] [30] |
One | August 18 – 21, 1984 | Subtropical Storm | 60 mph (95 km/h) | 1000 hPa (29.53 inHg) | None | None | None | [31] [32] |
One | April 21 – 24, 1992 | Subtropical Storm | 50 mph (85 km/h) | 1002 hPa (29.59 inHg) | None | None | None | [33] [34] |
Unnamed | June 1 – 2, 1997 | Subtropical Storm | 50 mph (85 km/h) | 1003 hPa (29.62 inHg) | None | None | None | [35] |
Unnamed | October 25 – 29, 2000 | Subtropical Storm | 65 mph (100 km/h) | 976 hPa (28.82 inHg) | New England, Atlantic Canada | None | None | [36] |
Nicole | October 10 – 11, 2004 | Subtropical Storm | 50 mph (85 km/h) | 986 hPa (29.12 inHg) | Bermuda, Atlantic Canada, New England | None | None | [37] |
Unnamed | October 4 – 5, 2005 | Subtropical Storm | 50 mph (85 km/h) | 997 hPa (29.44 inHg) | Azores | None | None | [38] |
Unnamed | October 8 – 10, 2005 | Subtropical Depression | 35 mph (55 km/h) | 1008 hPa (29.77 inHg) | None | None | None | [39] |
Andrea | May 9 – 11, 2007 | Subtropical Storm | 60 mph (95 km/h) | 1001 hPa (29.56 inHg) | Virginia, Southeastern U.S., Bahamas | Minimal | 6 | [40] |
Unnamed | December 5 – 7, 2013 | Subtropical Storm | 50 mph (85 km/h) | 997 hPa (29.44 inHg) | Azores | None | None | [41] |
Andrea | May 20 – 21, 2019 | Subtropical Storm | 40 mph (65 km/h) | 1006 hPa (29.71 inHg) | Bermuda | None | None | [42] |
Rebekah | October 30 – November 1, 2019 | Subtropical Storm | 50 mph (85 km/h) | 983 hPa (29.03 inHg) | Azores | None | None | [43] |
Alpha | September 17 – 19, 2020 | Subtropical Storm | 50 mph (85 km/h) | 996 hPa (29.41 inHg) | Portugal, Spain | $24.2 million | 1 | [44] |
Teresa | September 24 – 25, 2021 | Subtropical Storm | 45 mph (75 km/h) | 1008 hPa (29.77 inHg) | Bermuda | None | None | [45] |
Unnamed | January 16 – 17, 2023 | Subtropical Storm | 70 mph (110 km/h) | 976 hPa (28.82 inHg) | Nova Scotia | None | None | [46] |
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