Halley 12Z 50hPa wind_speed 1957 - - - 34.7 - - - - - 20.4 18.2 10.4 1958 8.8 9.3 10.9 18.9 20.7 26.1 27.4 26.9 32.9 26.9 23.0 12.5 1959 9.0 6.7 - 14.6 25.0 34.4 24.9 26.2 37.4 31.6 17.0 8.9 1960 6.5 - - - - - - - - - 14.9 15.0 1961 10.4 - - - - - - - - - - - 1962 - - - - - - - - - - - - 1963 - - - - - - - - - - - - 1964 - - - - - - - - - - - - 1965 - - - - - 28.0 - - - 22.2 19.7 - 1966 - - - - - - - - - 31.8 8.2 14.3 1967 12.3 8.0 16.8 29.8 35.4 28.7 26.2 38.5 30.1 32.8 25.2 12.4 1968 5.7 8.0 7.6 26.8 27.0 27.0 43.6 43.2 35.6 26.1 - 13.6 1969 10.2 - - 22.6 19.9 20.0 - - 55.0 17.0 - - 1970 - 9.6 9.7 - - - 37.2 - 52.2 34.3 39.5 - 1971 - - 14.0 29.6 23.2 57.9 40.4 44.0 39.1 29.6 30.9 13.8 1972 9.9 5.7 11.2 23.0 36.7 27.3 34.3 36.4 33.3 41.5 34.7 9.8 1973 6.4 8.5 16.5 25.2 21.3 32.9 35.0 43.5 35.2 37.8 27.7 9.1 1974 7.5 9.4 - 32.9 - - 30.5 29.0 39.2 - - - 1975 - - 12.3 27.8 24.0 26.4 - - - - - 14.8 1976 12.1 9.6 16.6 - - - - - - - 19.9 15.1 1977 10.3 5.0 - 32.1 41.1 - - 29.9 37.4 19.9 31.0 10.0 1978 9.3 5.9 13.1 - 45.9 - 30.0 - 43.6 51.2 28.2 9.1 1979 5.4 5.9 - - - - - - 28.2 28.7 18.0 12.3 1980 7.1 7.0 8.7 13.8 34.0 - - - 27.7 32.7 19.1 - 1981 - - 14.6 - - - 21.5 - - - - - 1982 - - - - - - - - - - - - 1983 - - - - - - - - - - - - 1984 - 7.9 - 33.6 - - - - 46.7 - - - 1985 13.6 18.1 18.5 35.5 38.0 45.0 44.4 40.9 47.8 25.8 40.9 20.7 1986 - - - 30.5 25.3 32.2 38.5 42.1 46.1 61.9 30.5 20.8 1987 18.6 - - - - - 22.0 - - - - - 1988 - - - - 44.9 17.2 - - - - - - 1989 - - - - - - - - - - - - 1990 - - - - - - - - - - - - 1991 - - - 24.5 21.2 15.9 - - - - 27.6 29.6 1992 - 5.7 13.9 35.6 27.8 20.5 28.3 31.2 35.2 30.4 43.2 21.6 1993 13.9 9.8 14.6 21.5 35.4 32.9 28.1 20.2 27.3 19.3 18.9 19.9 1994 6.8 7.5 18.4 27.1 29.3 16.9 - - 25.0 16.3 24.3 19.3 1995 9.2 8.1 14.6 29.3 34.4 - - - 18.9 22.9 17.2 19.4 1996 7.3 9.7 19.4 27.4 - - - 20.4 25.9 41.4 26.0 19.6 1997 6.8 8.7 - 25.9 - - 29.2 - - 26.6 - 15.8 1998 5.5 12.7 - - - - - 26.5 29.7 34.7 44.7 - 1999 9.2 9.9 16.8 31.1 - - - - 26.3 33.4 33.9 38.0 2000 10.6 11.8 27.7 33.8 44.9 30.3 39.0 26.0 22.2 22.3 61.2 17.7 2001 5.5 6.6 14.4 26.9 34.8 14.2 23.6 33.2 34.9 29.6 51.1 35.7 2002 7.9 13.0 8.2 34.9 20.8 18.9 37.2 34.1 54.9 43.0 34.1 5.6 2003 5.7 7.1 16.6 31.5 41.1 31.4 34.0 40.2 38.8 34.7 36.5 15.3 2004 4.5 6.1 14.6 32.7 40.9 42.6 47.4 34.3 31.0 40.7 34.1 23.9 2005 8.6 7.9 15.7 29.9 39.3 26.0 36.2 37.6 31.6 30.3 44.0 13.0 2006 6.9 11.2 17.9 34.1 40.0 44.0 42.0 14.5 22.7 41.5 34.4 31.3 2007 13.5 9.6 7.2 24.1 26.4 23.0 - 36.2 32.8 26.4 30.3 34.4 2008 9.0 8.2 14.9 20.7 27.5 40.9 - - 45.3 30.6 31.0 28.1 2009 10.4 5.6 15.6 25.9 30.2 35.6 - - 34.5 33.4 25.6 11.2 2010 8.5 7.0 13.3 30.9 40.6 52.0 - - 42.6 47.8 55.0 35.0 2011 7.4 6.4 19.9 24.8 37.8 45.3 - - 28.2 24.0 17.4 31.2 2012 11.0 7.2 11.8 33.8 43.2 33.5 - - 29.2 23.2 44.9 14.4 2013 9.0 9.0 21.2 44.3 47.9 - - - 21.5 28.4 49.5 17.4 2014 6.6 6.0 16.3 35.8 34.0 48.9 - - - 21.4 20.8 24.0 2015 10.9 9.2 18.3 37.0 43.2 - - - 24.2 22.6 26.1 35.9 2016 10.1 8.8 20.3 24.0 28.2 52.0 - 23.5 40.2 40.1 19.6 8.9 2017 9.5 9.0 - - - - - - - - - 18.0 2018 6.6 9.1 - - - - - - - - - 17.0 2019 7.0 9.8 - - - - - - - - - 7.7 2020 7.4 - - - - - - - - - - - 2021 - - - - - - - - - - - 32.1 2022 12.3 - - - - - - - - - - 26.0 2023 10.6 - - - - - - - - - - 25.2 2024 10.5 - - - - - - - - - - -