https://psl.noaa.gov/enso/past_events.html 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 0 0 1 0 0 0 1 1 -1 0 0 1 0 0 1 0 0 1 -1 -1 0 0 1 0 0 0 1 -1 0 1 -1 -1 0 0 0 1 0 0 0 0 1 1981 0 2 1982 0 3 1983 1 4 1984 0 5 1985 0 6 1986 0 7 1987 1 8 1988 1 9 1989 -1 10 1990 0 11 1991 0 12 1992 1 13 1993 0 14 1994 0 15 1995 1 16 1996 0 17 1997 0 18 1998 1 19 1999 -1 20 2000 -1 21 2001 0 22 2002 0 23 2003 1 24 2004 0 25 2005 0 26 2006 0 27 2007 1 28 2008 -1 29 2009 0 30 2010 1 31 2011 -1 32 2012 -1 33 2013 0 34 2014 0 35 2015 0 36 2016 1 37 2017 0 38 2018 0 39 2019 0 40 2020 0 EL: 3 1983 1 7 1987 1 8 1988 1 12 1992 1 15 1995 1 18 1998 1 23 2003 1 27 2007 1 30 2010 1 36 2016 1 LA: 9 1989 -1 19 1999 -1 20 2000 -1 28 2008 -1 31 2011 -1 32 2012 -1 NONE: 1 1981 0 2 1982 0 4 1984 0 5 1985 0 6 1986 0 10 1990 0 11 1991 0 13 1993 0 14 1994 0 16 1996 0 17 1997 0 21 2001 0 22 2002 0 24 2004 0 25 2005 0 26 2006 0 29 2009 0 33 2013 0 34 2014 0 35 2015 0 37 2017 0 38 2018 0 39 2019 0 40 2020 0 ------------------------------------------- https://ggweather.com/enso/oni.htm El Niño - 27 La Niña - 25 Weak - 11 Moderate - 7 Strong - 6 Very Strong - 3 Weak - 12 Moderate - 6 Strong - 7 1952-53 1951-52 1957-58 1982-83 1954-55 1955-56 1973-74 1953-54 1963-64 1965-66 1997-98 1964-65 1970-71 1975-76 1958-59 1968-69 1972-73 2015-16 1971-72 1995-96 1988-89 1969-70 1986-87 1987-88 1974-75 2011-12 1998-99 1976-77 1994-95 1991-92 1983-84 2020-21 1999-00 1977-78 2002-03 2023-24 1984-85 2021-22 2007-08 1979-80 2009-10 2000-01 2010-11 2004-05 2005-06 2006-07 2008-09 2014-15 2016-17 2018-19 2017-18 2022-23 ------------------------------------------- Running 3-Month Mean ONI values ENSO Type Season JJA JAS ASO SON OND NDJ DJF JFM FMA MAM AMJ MJJ 1950-1951 -0.5 -0.4 -0.4 -0.4 -0.6 -0.8 -0.8 -0.5 -0.2 0.2 0.4 0.6 ME 1951-1952 0.7 0.9 1 1.2 1 0.8 0.5 0.4 0.3 0.3 0.2 0 WE 1952-1953 -0.1 0 0.2 0.1 0 0.1 0.4 0.6 0.6 0.7 0.8 0.8 WE 1953-1954 0.7 0.7 0.8 0.8 0.8 0.8 0.8 0.5 0 -0.4 -0.5 -0.5 WL 1954-1955 -0.6 -0.8 -0.9 -0.8 -0.7 -0.7 -0.7 -0.6 -0.7 -0.8 -0.8 -0.7 ML 1955-1956 -0.7 -0.7 -1.1 -1.4 -1.7 -1.5 -1.1 -0.8 -0.6 -0.5 -0.5 -0.5 1956-1957 -0.6 -0.6 -0.5 -0.4 -0.4 -0.4 -0.2 0.1 0.4 0.7 0.9 1.1 SE 1957-1958 1.3 1.3 1.3 1.4 1.5 1.7 1.8 1.7 1.3 0.9 0.7 0.6 WE 1958-1959 0.6 0.4 0.4 0.4 0.5 0.6 0.6 0.6 0.5 0.3 0.2 -0.1 1959-1960 -0.2 -0.3 -0.1 0 0 0 -0.1 -0.1 -0.1 0 0 0 1960-1961 0.1 0.2 0.3 0.2 0.1 0.1 0 0 0 0.1 0.2 0.3 1961-1962 0.1 -0.1 -0.3 -0.3 -0.2 -0.2 -0.2 -0.2 -0.2 -0.3 -0.3 -0.2 1962-1963 0 -0.1 -0.1 -0.2 -0.3 -0.4 -0.4 -0.2 0.2 0.3 0.3 0.5 ME 1963-1964 0.9 1.1 1.2 1.3 1.4 1.3 1.1 0.6 0.1 -0.3 -0.6 -0.6 WL 1964-1965 -0.6 -0.7 -0.8 -0.8 -0.8 -0.8 -0.6 -0.3 -0.1 0.2 0.5 0.8 SE 1965-1966 1.2 1.5 1.9 2 2 1.7 1.4 1.2 1 0.7 0.4 0.2 1966-1967 0.2 0.1 -0.1 -0.1 -0.2 -0.3 -0.4 -0.5 -0.5 -0.4 -0.2 0 1967-1968 0 -0.2 -0.3 -0.4 -0.3 -0.4 -0.6 -0.7 -0.6 -0.4 0 0.3 ME 1968-1969 0.6 0.5 0.4 0.5 0.7 1 1.1 1.1 0.9 0.8 0.6 0.4 WE 1969-1970 0.4 0.5 0.8 0.9 0.8 0.6 0.5 0.3 0.3 0.2 0 -0.3 ML 1970-1971 -0.6 -0.8 -0.8 -0.7 -0.9 -1.1 -1.4 -1.4 -1.1 -0.8 -0.7 -0.7 WL 1971-1972 -0.8 -0.8 -0.8 -0.9 -1 -0.9 -0.7 -0.4 0.1 0.4 0.7 0.9 SE 1972-1973 1.1 1.4 1.6 2.1 2.1 1.8 1.2 0.5 -0.1 -0.5 -0.9 SL 1973-1974 -1.1 -1.3 -1.5 -1.7 -1.9 -2 -1.8 -1.6 -1.2 -1 -0.9 -0.8 WL 1974-1975 -0.5 -0.4 -0.4 -0.6 -0.8 -0.6 -0.5 -0.6 -0.7 -0.7 -0.8 -1 SL 1975-1976 -1.1 -1.2 -1.4 -1.4 -1.6 -1.7 -1.6 -1.2 -0.7 -0.5 -0.3 0 WE 1976-1977 0.2 0.4 0.6 0.8 0.9 0.8 0.7 0.6 0.3 0.2 0.2 0.3 WE 1977-1978 0.4 0.4 0.6 0.7 0.8 0.8 0.7 0.4 0.1 -0.2 -0.3 -0.3 1978-1979 -0.4 -0.4 -0.4 -0.3 -0.1 0 0 0.1 0.2 0.3 0.2 0 WE 1979-1980 0 0.2 0.3 0.5 0.5 0.6 0.6 0.5 0.3 0.4 0.5 0.5 1980-1981 0.3 0 -0.1 0 0.1 0 -0.3 -0.5 -0.5 -0.4 -0.3 -0.3 1981-1982 -0.3 -0.2 -0.2 -0.1 -0.2 -0.1 0 0.1 0.2 0.5 0.7 0.7 VSE 1982-1983 0.8 1.1 1.6 2 2.2 2.2 2.2 1.9 1.5 1.3 1.1 0.7 WL 1983-1984 0.3 -0.1 -0.5 -0.8 -1 -0.9 -0.6 -0.4 -0.3 -0.4 -0.5 -0.4 WL 1984-1985 -0.3 -0.2 -0.2 -0.6 -0.9 -1.1 -1 -0.8 -0.8 -0.8 -0.8 -0.6 1985-1986 -0.5 -0.5 -0.4 -0.3 -0.3 -0.4 -0.5 -0.5 -0.3 -0.2 -0.1 0 ME 1986-1987 0.2 0.4 0.7 0.9 1.1 1.2 1.2 1.2 1.1 0.9 1 1.2 SE 1987-1988 1.5 1.7 1.6 1.5 1.3 1.1 0.8 0.5 0.1 -0.3 -0.9 -1.3 SL 1988-1989 -1.3 -1.1 -1.2 -1.5 -1.8 -1.8 -1.7 -1.4 -1.1 -0.8 -0.6 -0.4 1989-1990 -0.3 -0.3 -0.2 -0.2 -0.2 -0.1 0.1 0.2 0.3 0.3 0.3 0.3 1990-1991 0.3 0.4 0.4 0.3 0.4 0.4 0.4 0.3 0.2 0.3 0.5 0.6 SE 1991-1992 0.7 0.6 0.6 0.8 1.2 1.5 1.7 1.6 1.5 1.3 1.1 0.7 1992-1993 0.4 0.1 -0.1 -0.2 -0.3 -0.1 0.1 0.3 0.5 0.7 0.7 0.6 1993-1994 0.3 0.3 0.2 0.1 0 0.1 0.1 0.1 0.2 0.3 0.4 0.4 ME 1994-1995 0.4 0.4 0.6 0.7 1 1.1 1 0.7 0.5 0.3 0.1 0 ML 1995-1996 -0.2 -0.5 -0.8 -1 -1 -1 -0.9 -0.8 -0.6 -0.4 -0.3 -0.3 1996-1997 -0.3 -0.3 -0.4 -0.4 -0.4 -0.5 -0.5 -0.4 -0.1 0.3 0.8 1.2 VSE 1997-1998 1.6 1.9 2.1 2.3 2.4 2.4 2.2 1.9 1.4 1 0.5 -0.1 SL 1998-1999 -0.8 -1.1 -1.3 -1.4 -1.5 -1.6 -1.5 -1.3 -1.1 -1 -1 -1 SL 1999-2000 -1.1 -1.1 -1.2 -1.3 -1.5 -1.7 -1.7 -1.4 -1.1 -0.8 -0.7 -0.6 WL 2000-2001 -0.6 -0.5 -0.5 -0.6 -0.7 -0.7 -0.7 -0.5 -0.4 -0.3 -0.3 -0.1 2001-2002 -0.1 -0.1 -0.2 -0.3 -0.3 -0.3 -0.1 0 0.1 0.2 0.4 0.7 ME 2002-2003 0.8 0.9 1 1.2 1.3 1.1 0.9 0.6 0.4 0 -0.3 -0.2 2003-2004 0.1 0.2 0.3 0.3 0.4 0.4 0.4 0.3 0.2 0.2 0.2 0.3 WE 2004-2005 0.5 0.6 0.7 0.7 0.7 0.7 0.6 0.6 0.4 0.4 0.3 0.1 WL 2005-2006 -0.06 -0.14 -0.11 -0.29 -0.57 -0.84 -0.85 -0.77 -0.57 -0.37 -0.14 -0.03 WE 2006-2007 0.10 0.30 0.54 0.77 0.94 0.94 0.66 0.22 -0.12 -0.32 -0.38 -0.47 SL 2007-2008 -0.56 -0.81 -1.07 -1.34 -1.50 -1.60 -1.64 -1.52 -1.29 -1.01 -0.84 -0.61 WL 2008-2009 -0.37 -0.23 -0.24 -0.35 -0.55 -0.73 -0.85 -0.79 -0.61 -0.33 0.01 0.28 ME 2009-2010 0.45 0.58 0.71 1.01 1.36 1.56 1.50 1.22 0.84 0.35 -0.17 -0.66 SL 2010-2011 -1.05 -1.35 -1.56 -1.64 -1.64 -1.59 -1.42 -1.19 -0.93 -0.73 -0.55 -0.44 ML 2011-2012 -0.48 -0.62 -0.83 -1.01 -1.09 -1.04 -0.86 -0.72 -0.59 -0.47 -0.26 -0.01 2012-2013 0.25 0.37 0.37 0.27 0.05 -0.21 -0.43 -0.43 -0.34 -0.30 -0.36 -0.41 2013-2014 -0.40 -0.32 -0.26 -0.18 -0.17 -0.27 -0.42 -0.46 -0.27 0.04 0.21 0.16 WE 2014-2015 0.05 0.07 0.23 0.49 0.64 0.66 0.55 0.47 0.53 0.70 0.93 1.18 VSE 2015-2016 1.52 1.86 2.16 2.42 2.57 2.64 2.48 2.14 1.58 0.94 0.39 -0.07 WL 2016-2017 -0.36 -0.54 -0.63 -0.69 -0.67 -0.56 -0.34 -0.16 0.05 0.20 0.30 0.31 WL 2017-2018 0.14 -0.11 -0.38 -0.65 -0.84 -0.97 -0.92 -0.85 -0.70 -0.50 -0.22 -0.01 WE 2018-2019 0.09 0.23 0.49 0.76 0.90 0.81 0.75 0.72 0.71 0.66 0.54 0.45 2019-2020 0.28 0.14 0.19 0.35 0.51 0.55 0.50 0.48 0.40 0.19 -0.08 -0.30 ML 2020-2021 -0.41 -0.57 -0.89 -1.17 -1.27 -1.19 -1.05 -0.93 -0.84 -0.66 -0.48 -0.38 ML 2021-2022 -0.40 -0.49 -0.67 -0.81 -0.98 -0.98 -0.97 -0.93 -0.99 -1.06 -0.99 -0.85 WL 2022-2023 -0.81 -0.91 -1.01 -0.99 -0.92 -0.82 -0.67 -0.43 -0.14 0.16 0.48 0.77 SE 2023-2024 1.07 1.32 1.56 1.78 1.92 1.95 1.79 1.49 1.14 0.71 0.40 0.15