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,[1] 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.[2]
- 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.[3]
- 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.[4][5]
- Intentionally left unnamed to avoid confusion. An example of this is the 1991 Perfect Storm from the 1991 Atlantic hurricane season.[6]
- Post-operational upgrading. An example of this is the Unnamed tropical storm from the 1996 Pacific hurricane season.[7]
North Atlantic Ocean[]
Only unnamed subtropical cyclones that could have been named are included. This excludes several that existed, but that were unnamed because subtropical cyclones were not named when they existed.
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.[6]
- 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.[8]
- Subtropical Storm 15 – 2013
- 2021 Atlantic hurricane season#unnamed subtropical storm sub tropical storm 16 -2021
South Atlantic Ocean[]
Naming began in 2011. Before 2011, a few systems in the south Atlantic basin were given names.
- Tropical Storm 01Q – 2021 – was monitored and designated 01Q by NOAA, but not recognized by the Hydrographic Center of the Brazilian Navy, the organization responsible for naming tropical cyclones in the south Atlantic.
Eastern and central north Pacific Ocean[]
Naming began in 1960. Before 1957, a few systems in the central Pacific basin were given names, generally in an ad hoc manner.
- 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.[9]
- 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 115 km/h (70 mph).[9]
- 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.[10][11]
- 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.[12]
- Tropical Storm Seven-E – 2020 – Was upgraded from a tropical depression to a tropical storm after European Space Agency’s Advanced Scatterometer (ASCAT) suggested that the cyclone was a tropical storm.[13]
Western north Pacific Ocean[]
The official practice of tropical cyclone naming started in 1945 within the Western Pacific.[14][15] Due to differences in wind speed criteria between the Japan Meteorological Agency and the Joint Typhoon Warning Center, a system will sometimes be considered a tropical storm by the JTWC but only a depression by the JMA, or vice versa. This results in several apparent unnamed systems. Prior to 2000, the JTWC was responsible for tropical cyclone naming, with the JMA assuming responsibility for naming from 2000 and beyond. Due to this, "unnamed tropical cyclones" that met the JMA's tropical storm criteria but not those of the JTWC prior to 2000 are excluded. Likewise, "unnamed tropical cyclones" that met the JTWC's tropical storm criteria but not those of the JMA from 2000 and beyond are also excluded.
- 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[]
Due to differences in wind speed criteria between the India Meteorological Department and the Joint Typhoon Warning Center, a system will sometimes be considered a tropical storm by the JTWC but only a depression by the IMD. This results in several apparent unnamed systems. Because the IMD is responsible for naming, "unnamed tropical cyclones" that met the JTWC's tropical storm criteria but not those of the IMD are excluded.
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.[16]
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
Subtropical Depression 15 – 2006–07
- 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[17]
- Cyclone 2 – 1981–82
- Cyclone 6 – 1983–84
- Cyclone 8 – 1995–96
- Cyclone 1 – 2002–03
- Tropical Cyclone 01U – 2007–08 [18]
- Tropical Cyclone 22U – 2016–17[19]
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 (1)
- Unnamed Tropical Cyclone 1976–77 – February 1977 (2)
- 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.[4][5]
References[]
Unless otherwise indicated, all storms come from the following datasets from the Regional Specialized Meteorological Center:
- Atlantic: [20]
- Western north Pacific: "RSMC Best Track Data (Text)". Japan Meteorological Agency. Archived from the original on 2013-06-25. Retrieved 2008-06-21.
- Northern Indian, western north Pacific, Southern Hemisphere: "JTWC Tropical Cyclone Best Track Data Site". Joint Typhoon Warning Center. 2007-08-09. Retrieved 2008-05-21.
- Southwestern Indian Ocean: "Untitled". Météo-France. Archived from the original on 2008-04-21. Retrieved 2008-06-21.
- ^ Christopher Landsea. "Subject: B1) How are tropical cyclones named?" (FAQ). Retrieved 2008-05-05.
- ^ Jack Beven & Eric S. Blake (2006-04-10). "Unnamed Subtropical Storm" (PDF). National Hurricane Center. p. 1. Retrieved 2008-05-05.
- ^ "1995 Annual Tropical Cyclone Report" (PDF). Joint Typhoon Warning Center.
- ^ Jump up to: a b RSMC Nadi — Tropical Cyclone Centre; TCWC Brisbane; TCWC Wellington (May 22, 2009). "RSMC Nadi — Tropical Cyclone Centre Best Track Data for 1996/97 Cyclone Season". Fiji Meteorological Service, Meteorological Service of New Zealand Limited, Australian Bureau of Meteorology. United States: International Best Track Archive for Climate Stewardship. Retrieved January 31, 2013.
- ^ Jump up to: a b "Matt Megan's World". The Manawatu Standard. Palmerston North, New Zealand. April 2, 1997. p. 3. – via Lexis Nexis (subscription required)
- ^ Jump up to: a b "The Perfect Storm October 1991" (PDF). National Climatic Data Center. 2008-08-20. p. 1. Retrieved 2011-12-03.
- ^ Edward Rappaport (1996-11-07). "unnamed tropical storm (formerly Tropical Depression One-E)". National Hurricane Center. Archived from the original on 2008-06-01. Retrieved 2008-05-05.
- ^ Blake, Eric S; Kimberlain, Todd B; National Hurricane Center (December 2, 2011). Unnamed Tropical Storm: September 1 - 2, 2011 (PDF) (Tropical Cyclone Report). United States National Oceanic and Atmospheric Administration's National Weather Service. p. 2. Archived (PDF) from the original on August 5, 2013. Retrieved August 5, 2013.
- ^ Jump up to: a b Benkman, Walter E (1963). Rosendal, Hans E (ed.). Tropical Cyclones in the Eastern North Pacific, 1962 (Mariners Weather Log: Volume 7 Issue 2: March 1963). United States National Oceanic and Atmospheric Administration. pp. 46–49. ISSN 0025-3367. OCLC 648466886.
- ^ Shaw Samuel; Central Pacific Hurricane Center. A History of Tropical Cyclones In the Central North Pacific and the Hawaiian Islands 1832-1979. United States National Oceanic and Atmospheric Administration's National Weather Service. Retrieved August 6, 2013.
- ^ National Hurricane Center; Hurricane Research Division; Central Pacific Hurricane Center. "The Northeast and North Central Pacific hurricane database 1949–2019". United States National Oceanic and Atmospheric Administration's National Weather Service. Retrieved 1 October 2020. A guide on how to read the database is available here.
- ^ Rappaport, Edward N; National Hurricane Center (November 7, 1996). Unnamed Tropical Storm, (formerly Tropical Depression One-E): May 13 - 16 1996 (PDF) (Tropical Cyclone Report). United States National Oceanic and Atmospheric Administration's National Weather Service. Archived from the original on August 5, 2013. Retrieved August 5, 2013.
- ^ Brown, Daniel P; National Hurricane Center (December 8, 2020). Unnamed Tropical Storm, (formerly Tropical Depression Seven-E): July 20 - 21 2020 (PDF) (Tropical Cyclone Report). United States National Oceanic and Atmospheric Administration's National Weather Service. Retrieved December 11, 2020.
- ^ Landsea, Christopher W; Dorst, Neal M (June 1, 2014). "Subject: Tropical Cyclone Names: B1) How are tropical cyclones named?". Tropical Cyclone Frequently Asked Question. United States National Oceanic and Atmospheric Administration's Hurricane Research Division. Archived from the original on March 29, 2015. Retrieved May 19, 2017.
- ^ Cry, George (July 1958). Bristow, Gerald C (ed.). "Naming hurricanes and typhoons". Mariners Weather Log. 2 (4): 109. hdl:2027/uc1.b3876059. ISSN 0025-3367. OCLC 648466886.
- ^ "Mid-Season Review". India Meteorological Department. Archived from the original on August 10, 2007. Retrieved 2008-05-05.
- ^ Gary Padgett (2002-04-20). "Monthly Global Tropical Cyclone Summary December 2001". Retrieved 2007-10-21.
- ^ "The Australian Tropical Cyclone Database" (CSV). Australian Bureau of Meteorology. A guide on how to read the database is available here.
- ^ "Tropical Cyclone 22U". Australian Bureau of Meteorology. April 28, 2017. Retrieved April 28, 2017.
- ^ "Atlantic hurricane best track (HURDAT version 2)" (Database). United States National Hurricane Center. May 25, 2020.
External links[]
- Lists of tropical cyclones