List of unnamed tropical cyclones
The list of unnamed tropical cyclones since naming began includes all tropical cyclones that met the criteria for naming in a basin, but that for whatever reason, did not receive a name. These systems have occurred in all basins and for various reasons.
Scope, reasons, and naming overview
In order to ease communications and advisories, tropical cyclones are named when, according to the appropriate Regional Specialized Meteorological Center or Tropical Cyclone Warning Center, it has reached tropical storm status. A tropical cyclone with winds of tropical storm intensity or higher goes unnamed when operationally, it is not considered to have met the criteria for naming. Reasons for this include:- Being missed during a season, usually because of uncertainties in classification in real time. An example of this is the 2005 Azores subtropical storm from the 2005 Atlantic hurricane season.
- Disagreements between warning centre and naming centres over intensity of a cyclone. An example of this is Tropical Storm 06W from the 1995 Pacific typhoon season.
- Formation of a cyclone in an area where no official agency is responsible for naming. An example of this is Tropical Cyclone 29P from the 1996–97 South Pacific cyclone season.
- Intentionally left unnamed to avoid confusion. An example of this is the 1991 Perfect Storm from the 1991 Atlantic hurricane season.
- Post-operational upgrading. An example of this is the Unnamed tropical storm from the 1996 Pacific hurricane season.
North Atlantic Ocean
Naming has been used since the 1950 season.
- Tropical Storm 12 – 1950
- Tropical Storm 15 – 1950
- Tropical Storm 16 – 1950
- Tropical Storm 1 – 1951
- Hurricane 12 – 1951
- Tropical Storm 1 – 1952
- Tropical Storm 3 – 1952
- Tropical Storm 5 – 1952
- Tropical Storm 8 – 1952
- Tropical Storm 11 – 1952
- Tropical Storm 2 – 1953
- Tropical Storm 5 – 1953
- Tropical Storm 8 – 1953
- Tropical Storm 11 – 1953
- Tropical Storm 13 – 1953
- Tropical Storm 1 – 1954
- Tropical Storm 2 – 1954
- Tropical Storm 4 – 1954
- Tropical Storm 9 – 1954
- Tropical Storm 11 – 1954
- Hurricane 13 – 1954
- Tropical Storm 15 – 1954
- Tropical Storm 5 – 1955
- Tropical Storm 11 – 1955
- Tropical Storm 12 – 1955
- Tropical Storm 1 – 1956
- Tropical Storm 2 – 1956
- Tropical Storm 9 – 1956
- Tropical Storm 10 – 1956
- Tropical Storm 12 – 1956
- Tropical Storm 1 – 1957
- Tropical Storm 8 – 1957
- Tropical Storm 1 – 1958
- Tropical Storm 12 – 1958
- Hurricane 3 – 1959
- Tropical Storm 6 – 1959
- Tropical Storm 8 – 1959
- Tropical Storm 9 – 1959
- Tropical Storm 1 – 1960
- Tropical Storm 6 – 1960
- Tropical Storm 6 – 1961
- Tropical Storm 3 – 1963
- Tropical Storm 1 – 1964
- Tropical Storm 2 – 1964
- Tropical Storm 12 – 1964
- Tropical Storm 1 – 1965
- Hurricane 10 – 1969
- Tropical Storm 11 – 1969
- Tropical Storm 16 – 1969
- Hurricane 17 – 1969
- Tropical Storm 8 – 1970
- Hurricane 18 – 1970
- Hurricane 19 – 1970
- Hurricane 2 – 1971
- Tropical Storm 1 – 1987
- Tropical Storm 7 – 1988
- Hurricane 8 – 1991 – was deliberately left unnamed to avoid any confusion as the news media was focused, on the Perfect Storm and was expected to be short-lived and primarily of concern to maritime interests.
- Subtropical Storm 19 – 2005
- Tropical Storm 2 – 2006
- Tropical Storm 12 – 2011 – advisories were not issued on this system during August/September 2011, because of the intermittent nature of the convection and the somewhat frontal nature of the satellite presentation.
- Subtropical Storm 15 – 2013
Eastern and central north Pacific Ocean
- Unnamed August tropical storm 1962 – This system was upgraded from a tropical depression to a tropical storm after a letter from a ship called the Golden State prompted a re evaluation of the system.
- Unnamed September tropical storm 1962 – This system was upgraded from a tropical depression to a tropical storm after a ship called the Richfield reported sustained winds of.
- Unnamed tropical storm – 1963 – This system was not named or numbered as a tropical cyclone operationally, but has been recognized as an Unnamed tropical storm since.
- Pacific Northwest hurricane – 1975
- Tropical Storm One-E – 1996 – Was upgraded from a tropical depression to a tropical storm after the United States Coast Guard relayed ship reports to the National Hurricane Center, that suggested the cyclone was a tropical storm.
Western north Pacific Ocean
- Tropical Storm 24W – 1948
- Tropical Storm 26W – 1948
- Tropical Storm 02W – 1950
- Tropical Storm 12W – 1952
- Tropical Storm 14W – 1952
- Tropical Storm 04W – 1953
- Tropical Storm 09W – 1953
- Tropical Storm 13W – 1953
- Tropical Storm 16W – 1953
- Tropical Storm 22W – 1953
- Tropical Storm 23W – 1953
- Tropical Storm 01W – 1954
- Tropical Storm 07W – 1954
- Tropical Storm 08W – 1954
- Tropical Storm 15W – 1954
- Tropical Storm 09W – 1955
- Tropical Storm 17W – 1955
- Tropical Storm 20W – 1955
- Tropical Storm 02W – 1956
- Tropical Storm 04W – 1956
- Tropical Storm 08W – 1956
- Tropical Storm 18W – 1956
- Tropical Storm 01W – 1957
- Tropical Storm 08W – 1957
- Tropical Storm 17W – 1957
- Tropical Storm 06W – 1995
- Tropical Storm 24W – 1996 – was operationally classified as a depression by both the JTWC and PAGASA, the latter of which named the system Ningning. However, it was later determined by JTWC that the system reached tropical storm intensity.
- Tropical Storm 35W – 1996
- Tropical Storm 38W – 1996
- Tropical Storm 03W – 1998
North Indian Ocean
Naming has taken place since mid-2003.
There have been no unnamed tropical cyclones using the India Meteorological Department's criteria. One system, 2007's Yemyin, was upgraded after the fact and retroactively named.
South-west Indian Ocean
Tropical cyclones have been named within this basin since 1960, with any tropical depression or subtropical depression that RSMC La Réunion analyze as having 10-minute sustained windspeeds of at least 65 km/h, 40 mph is named. However unlike other basins RSMC La Réunion do not name tropical depressions, however as they delegate the rights to name tropical cyclones to the Subregional tropical cyclone warning centers in Mauritius or Madagascar depending on whether it is east or west of the 55th meridian east.- Moderate Tropical Storm F1 – 1998–99
- Subtropical Depression 13 – 1999–2000
- Subtropical Depression 15 – 2000–01
- Tropical Cyclone 01U – 2007–08
- Subtropical Depression 10 – 2009–10
- Subtropical Depression 09 – 2010–11
- Subtropical Depression 13 – 2013–14
- Moderate Tropical Storm 01 – 2018–19
Australian region
- Cyclone 5 – 1964–65
- Cyclone 6 – 1964–65
- Cyclone 6 – 1965–66
- Cyclone 9 – 1965–66
- Cyclone 2 – 1967–68
- Cyclone 3 – 1967–68
- Cyclone 11 – 1967–68
- Cyclone 13 – 1967–68
- Cyclone 17 – 1967–68
- Cyclone 15 – 1968–69
- Cyclone 16 – 1968–69
- Cyclone 1 – 1969–70
- Cyclone 7 – 1969–70
- Flores Cyclone - 1972-73
- Cyclone 2 – 1981–82
- Cyclone 6 – 1983–84
- Cyclone 8 – 1995–96
- Cyclone 1 – 2002–03
- Tropical Cyclone 01U – 2007–08
- Tropical Cyclone 22U – 2016–17
South Pacific
- Unnamed Tropical Cyclone 1971–72 – December 1971
- Unnamed Tropical Cyclone 1971–72 – January 1972
- Unnamed Tropical Cyclone 1973–74 – November 1973
- Unnamed Tropical Cyclone 1976–77 – February 1977
- Unnamed Tropical Cyclone 1976–77 – February 1977
- Unnamed Tropical Cyclone 1980–81 – February 1981
- Unnamed Tropical Cyclone 1980–81 – February/March 1981
- Unnamed Tropical Cyclone 1980–81 – March 1981
- Unnamed Tropical Cyclone 1983–84 – February 1984
- Unnamed Tropical Cyclone 1983–84 – March 1984
- Unnamed Tropical Cyclone 1984–85 – December 1985
- Unnamed Tropical Cyclone 1986–87 – March 1987
- Unnamed Tropical Cyclone 1988–89 – February 1989
- Unnamed tropical cyclone 1990–91 – December 1990
- Tropical Cyclone 29P could not be named during February 1997 as it had developed into a tropical cyclone within the subtropic region of the Southern Pacific.