Syowa 00Z 500hPa wind_speed 1968 - - 15.8 19.0 22.9 23.4 21.0 18.3 22.2 20.4 19.4 16.2 1969 17.8 19.4 17.3 23.1 19.5 19.9 23.3 20.3 22.2 19.3 21.5 14.3 1970 18.5 14.1 17.7 21.8 26.0 27.2 22.7 22.9 16.3 19.3 19.7 17.7 1971 19.6 18.6 27.0 21.1 19.7 21.0 20.3 19.8 21.3 21.5 19.6 16.2 1972 13.4 16.0 20.9 20.0 23.0 25.3 20.6 25.3 30.4 24.3 21.2 22.1 1973 10.4 16.2 19.5 18.2 21.7 23.1 26.6 22.4 22.4 20.3 19.5 14.0 1974 12.9 12.9 17.0 19.1 27.2 19.6 20.9 20.7 22.7 16.6 14.6 18.8 1975 13.5 19.2 17.8 20.9 25.7 19.8 23.7 20.2 20.8 17.6 14.1 15.8 1976 16.2 11.4 14.2 22.7 20.0 24.8 19.1 17.2 23.7 13.9 20.1 22.5 1977 18.9 14.8 20.6 21.3 20.1 24.2 24.3 22.1 22.6 25.9 15.8 13.2 1978 11.9 17.8 15.7 18.2 20.2 18.1 17.5 17.5 21.8 19.6 14.9 16.3 1979 12.5 15.7 20.6 24.1 20.4 21.8 22.1 18.8 24.6 24.8 24.4 12.5 1980 17.6 21.2 19.5 18.1 23.8 17.2 17.3 18.6 19.6 18.1 12.6 16.3 1981 16.2 22.4 12.0 17.9 19.5 22.8 25.8 17.0 22.8 22.8 12.7 24.0 1982 13.9 17.0 17.6 21.1 20.1 21.8 21.7 23.1 25.3 19.0 17.4 18.3 1983 14.5 18.6 18.0 20.5 21.2 21.1 18.7 19.4 24.5 20.0 16.7 11.5 1984 13.0 15.4 23.9 21.8 24.8 20.6 22.6 22.4 17.8 19.6 17.1 15.9 1985 20.5 19.7 23.8 19.8 21.6 18.9 28.4 20.8 18.0 18.5 19.9 19.3 1986 18.2 17.1 17.9 17.1 24.1 24.6 19.9 29.6 24.6 22.2 18.5 17.2 1987 14.1 16.7 15.5 22.9 20.5 17.8 15.2 18.3 16.4 27.4 23.5 13.3 1988 16.1 19.7 18.3 21.6 24.2 19.2 16.0 20.4 17.4 12.6 13.6 15.5 1989 19.5 16.3 20.5 21.9 18.7 17.6 19.5 16.6 18.3 19.3 19.1 17.4 1990 16.7 14.2 16.7 21.4 21.9 14.8 26.4 17.5 19.0 15.0 17.5 16.8 1991 13.2 19.8 16.3 13.5 23.1 22.1 18.1 19.5 20.3 17.7 17.4 19.2 1992 11.7 14.0 17.9 27.0 25.8 25.8 16.9 19.2 20.2 22.1 15.5 15.3 1993 15.5 16.6 16.1 19.1 29.8 21.9 31.2 26.8 21.0 24.3 15.0 17.8 1994 14.5 15.4 19.2 22.6 17.7 19.9 20.5 25.1 17.2 15.7 14.8 13.7 1995 14.1 19.2 21.1 18.1 18.9 18.6 19.3 28.9 16.2 16.9 15.3 17.8 1996 13.8 18.1 18.0 23.1 25.2 21.0 24.4 18.7 21.0 17.7 12.8 16.0 1997 12.5 15.0 11.7 19.7 21.3 26.3 26.3 20.6 24.8 16.5 30.8 21.5 1998 15.6 16.6 14.5 29.6 23.4 20.2 18.3 17.7 28.0 23.0 16.8 13.3 1999 18.2 14.3 16.4 17.7 16.4 19.7 17.5 27.9 25.6 15.2 16.8 15.1 2000 12.3 21.3 17.1 14.2 23.8 21.1 20.2 21.3 14.4 17.7 23.0 14.9 2001 13.3 13.7 17.1 24.7 17.4 23.0 22.3 18.6 16.4 18.9 17.3 20.0 2002 10.5 16.5 15.3 25.8 22.5 18.7 22.0 18.8 23.0 16.5 15.9 17.3 2003 9.5 13.5 16.0 20.6 27.6 17.6 28.9 20.7 18.5 18.4 22.1 13.4 2004 15.8 18.2 19.4 21.5 18.6 24.0 18.1 20.8 20.7 21.1 15.7 16.6 2005 13.2 19.4 17.8 20.1 19.0 21.3 22.4 22.9 22.3 25.4 16.4 16.2 2006 13.6 17.6 16.7 17.7 21.8 24.5 23.0 26.7 23.9 21.8 18.5 15.0 2007 15.3 15.5 22.1 17.6 16.4 21.9 16.5 21.1 15.1 19.6 22.1 15.4 2008 15.8 15.8 21.0 27.0 18.0 27.0 23.5 22.5 26.5 19.9 16.4 21.8 2009 20.6 14.3 17.0 21.0 28.6 32.6 27.0 19.8 19.6 22.0 20.3 13.3 2010 19.9 20.7 17.2 18.1 17.2 18.4 25.7 21.5 23.1 20.1 15.6 17.7 2011 23.7 18.6 15.2 20.4 20.0 28.0 22.6 27.8 27.3 23.1 18.8 17.4 2012 14.7 21.3 18.0 19.9 27.1 26.3 21.1 28.7 28.5 21.3 19.6 16.2 2013 18.2 16.0 22.2 21.1 30.1 25.5 22.7 24.0 22.6 15.1 26.7 14.4 2014 17.0 16.8 17.1 18.8 30.8 18.0 18.1 31.0 16.7 16.1 11.3 17.8 2015 14.5 14.4 16.4 19.1 18.1 17.7 22.8 20.2 27.3 23.9 24.5 17.1 2016 16.1 27.1 23.4 23.6 23.6 20.6 22.0 24.2 18.2 27.4 19.7 23.3 2017 16.6 - 20.3 26.5 27.8 21.0 26.3 19.8 23.2 - - - 2018 - 16.0 25.3 15.6 17.0 19.6 26.8 24.5 24.6 24.3 - 15.3 2019 14.6 - - 11.5 - 20.6 17.5 22.1 25.4 23.8 - - 2020 - 17.3 - 30.0 16.6 23.7 18.9 24.1 25.1 18.8 21.6 - 2021 10.1 8.0 33.1 18.1 24.4 20.8 17.1 17.7 17.0 17.6 25.5 17.8 2022 17.7 18.8 18.8 21.0 27.6 21.5 16.5 21.3 - 24.0 16.9 - 2023 - 16.0 26.6 21.4 19.7 22.9 24.3 27.3 - 19.2 22.4 19.4 2024 17.1 20.5 17.4 20.3 - - - - - - - -