Marsh 18Z wind_speed 1987 - - - - - - - - - - - - 1988 - - - - - - - - - 15.4 13.5 - 1989 - - - 15.8 - - 14.2 - 17.3 13.8 7.6 8.6 1990 - - - 13.9 9.2 - - - 12.3 - - - 1991 8.2 - - 13.1 - - - - - - - - 1992 - - - - - - - - - - - - 1993 - - - - - - - - - 21.5 18.4 - 1994 16.1 - - 15.3 - - 20.2 20.5 - 18.2 - - 1995 - - - 17.0 - 15.4 19.2 18.2 - 17.4 17.0 - 1996 18.4 16.1 16.5 - 18.8 17.7 18.9 15.1 17.6 20.9 - - 1997 15.8 12.8 21.1 17.4 18.4 - - - 15.4 18.3 - - 1998 13.8 - 15.9 22.0 15.4 14.1 17.1 18.9 15.8 19.8 16.8 16.0 1999 15.3 17.2 15.8 19.1 17.3 17.9 16.7 22.5 18.5 20.5 21.2 14.6 2000 17.5 16.5 17.9 - - 19.6 14.6 19.1 21.8 18.6 13.3 16.9 2001 14.5 19.9 - 17.3 16.2 19.9 16.9 25.0 23.2 24.7 22.1 - 2002 - 20.4 16.1 - 19.0 20.0 19.4 17.6 15.8 21.6 14.7 19.4 2003 15.0 17.4 18.4 18.7 16.8 23.0 16.8 - - 22.8 15.9 15.6 2004 15.0 14.2 14.4 - 15.7 19.2 21.1 26.0 22.3 - - 18.1 2005 14.3 19.5 17.4 15.0 13.3 16.8 19.0 16.2 13.8 18.6 17.1 15.3 2006 - - 17.5 15.1 21.0 - 19.8 18.0 17.3 - 16.6 17.5 2007 14.6 13.0 13.8 17.9 - - 17.1 19.8 17.8 19.9 14.9 14.1 2008 14.8 15.9 14.5 19.3 16.2 20.8 17.4 17.8 15.8 - 15.2 19.2 2009 13.9 17.6 14.8 - - - - - - - - - 2010 16.8 18.9 18.8 - 19.8 21.0 - 19.0 - 20.5 19.5 - 2011 16.3 16.0 - 17.8 18.5 22.1 16.0 12.5 20.8 16.9 19.5 - 2012 15.9 16.6 17.2 21.1 15.2 23.6 18.2 20.8 21.1 19.0 16.0 11.2 2013 14.6 13.5 15.5 18.9 19.6 17.7 21.0 17.3 15.3 16.6 17.1 13.9 2014 14.3 18.1 - 18.2 17.9 18.8 16.7 18.6 16.6 20.9 21.6 15.4 2015 13.5 15.0 14.5 16.8 16.3 19.4 18.1 18.4 23.4 21.5 18.7 - 2016 - 16.4 17.1 - - 18.2 - 17.3 - - - - 2017 - 15.6 14.0 17.2 14.1 22.2 18.8 - 24.0 18.0 14.5 - 2018 13.1 14.6 19.1 20.3 18.5 18.3 - 19.6 18.2 18.8 19.7 17.5 2019 13.2 12.5 13.9 18.4 17.2 18.6 14.0 18.2 22.3 20.6 19.8 13.6 2020 13.0 16.2 16.7 17.9 14.4 17.9 17.0 24.3 19.4 20.7 18.7 16.4 2021 15.0 17.2 19.2 19.0 17.0 15.6 18.8 21.3 21.8 21.9 17.9 22.4 2022 15.3 16.6 17.1 17.3 18.1 21.0 18.9 22.0 19.6 20.4 23.4 16.8 2023 18.7 15.8 16.2 15.8 17.4 20.4 18.6 20.0 19.3 22.1 17.8 14.8 2024 14.6 17.1 13.7 17.9 18.7 15.2 - - 18.2 16.9 16.0 15.3 2025 15.6 13.8 16.6 16.0 15.8 19.2 19.3 22.5 16.2 16.4 14.7 17.5 2026 13.3 - - 16.0 16.4 16.4 22.5 16.6 23.2 - - -