1925, 1929, 1930, 1940, 1941, 1951, 1953, 1957, 1963, 1965,
1969, 1972,
1976, 1977, 1982, 1986, 1987, 1990, 1991, 1993, 1994, 1997
Cold Episode (La Nina) Years
1933, 1938, 1942, 1944, 1945, 1948, 1949, 1950, 1954, 1955, 1956, 1961,
1964, 1967, 1970, 1971, 1973, 1974, 1975, 1978, 1988, 1995
This list is taken from the article by Pielke and Landsea in the Bulletin of the American Meteorology Society, Volume 80, Number 10, October 1999, pps 2027-2033. An El Nino (La Nina) is said to occur when sea surface temperatures in the region of the Pacific known as Nino 3.4 (5oN-5oS and 120o- 170oW) are 0.4oC or more higher (lower) than the long-term average during August, September, and October (the months in the Atlantic hurricane season when 95% of Saffir-Simpson Category 3, 4, and 5 hurricanes occur).