Marsh 00Z msl_pressure 1970 993.9 987.6 994.2 983.9 989.3 995.9 994.9 994.3 990.4 993.3 990.4 991.2 1971 989.0 990.4 988.5 990.3 1003.2 994.1 999.9 984.5 991.1 992.4 984.4 993.7 1972 994.6 991.5 991.6 988.5 994.4 994.0 990.6 1001.9 989.6 995.7 985.8 992.5 1973 992.7 987.3 983.5 981.7 989.2 997.2 1002.7 988.1 989.1 993.1 990.0 985.5 1974 - - - - - - - - - - - - 1975 993.4 987.7 986.8 991.1 991.6 999.1 997.4 991.4 993.4 984.8 985.8 985.6 1976 994.5 990.3 993.9 987.9 985.1 995.9 982.9 983.0 989.0 993.8 996.5 1001.8 1977 995.3 990.0 990.9 990.7 984.5 993.2 1002.4 993.9 984.2 988.8 989.3 996.8 1978 989.8 992.2 995.2 993.5 1003.6 985.3 1003.1 987.3 996.1 986.0 995.2 989.0 1979 996.6 989.5 996.6 986.0 999.4 991.8 991.1 990.1 994.6 987.1 995.0 997.7 1980 992.2 994.2 993.7 996.5 998.4 987.6 1001.8 997.4 995.1 991.4 987.8 995.3 1981 992.4 984.8 1001.0 1000.5 994.7 997.2 998.0 991.5 992.9 991.7 983.4 989.5 1982 994.0 989.0 985.0 987.1 994.0 1003.7 991.8 998.3 994.6 987.6 992.4 996.7 1983 996.0 989.5 990.9 1000.4 1001.6 995.6 990.6 993.3 994.8 986.4 983.5 988.7 1984 989.4 990.5 998.1 988.1 994.6 1000.5 1002.7 992.8 1000.4 991.9 986.1 1001.9 1985 996.7 985.7 990.2 990.7 996.0 1008.1 988.0 985.3 986.5 994.3 990.9 983.1 1986 986.5 989.8 991.4 989.9 999.4 984.6 986.1 985.4 988.4 993.2 984.1 985.6 1987 989.5 993.4 985.4 988.9 997.8 992.4 993.6 1001.0 989.1 990.3 983.2 987.8 1988 994.0 991.2 987.8 993.3 998.6 995.6 991.7 1000.6 993.0 1001.4 983.6 983.6 1989 992.7 987.7 988.9 993.0 987.0 984.6 995.5 999.5 991.6 984.5 985.0 991.7 1990 991.3 991.7 986.1 991.5 1003.8 984.2 993.1 980.4 995.2 977.8 974.0 988.2 1991 988.3 991.6 989.6 992.9 988.6 992.2 992.5 988.4 997.4 985.7 988.7 998.2 1992 991.0 988.0 991.5 995.2 999.2 1001.9 997.9 990.8 988.8 986.8 993.8 996.1 1993 995.3 994.5 990.1 988.2 989.5 992.7 994.4 989.3 984.9 985.7 985.8 985.1 1994 985.5 986.4 994.0 996.1 996.6 997.3 996.8 989.4 982.7 989.8 994.9 989.9 1995 993.6 992.6 984.4 992.6 993.7 990.4 990.7 995.5 988.5 994.3 983.4 986.3 1996 991.3 991.8 986.6 996.7 986.1 992.6 991.1 990.4 996.6 986.4 979.3 990.3 1997 988.2 994.4 992.3 986.8 1000.3 1003.4 992.0 986.9 994.1 992.9 997.0 999.7 1998 986.7 996.1 991.2 996.0 1000.8 998.1 978.8 986.3 991.2 982.3 985.4 982.4 1999 990.6 985.3 995.7 989.7 993.7 996.9 991.6 989.7 992.1 987.4 989.3 984.2 2000 982.6 995.8 1002.4 989.6 998.7 998.5 1006.0 992.4 1002.2 989.5 994.9 989.3 2001 989.9 987.9 987.7 988.1 999.6 991.9 996.4 983.1 991.6 985.9 982.2 983.7 2002 989.0 987.1 992.5 988.7 993.6 991.0 995.2 1000.1 1003.1 989.7 990.2 990.5 2003 993.3 987.6 996.8 995.4 992.0 997.3 984.7 988.5 992.9 985.0 985.0 995.2 2004 987.2 998.2 989.5 992.2 995.4 990.0 991.4 990.5 980.3 990.0 995.7 991.8 2005 986.8 988.0 991.3 984.9 995.0 996.4 998.6 992.2 1000.2 994.8 991.5 995.3 2006 992.7 996.5 981.3 992.5 989.4 998.4 993.7 1000.7 990.7 991.9 982.8 984.7 2007 990.8 987.6 989.7 990.6 1000.0 991.4 994.9 988.8 998.0 984.1 990.5 985.7 2008 988.3 989.1 991.6 988.4 993.8 993.2 996.2 990.3 1002.0 986.1 983.6 981.5 2009 985.6 986.9 988.6 990.7 985.8 989.7 992.4 1002.6 990.1 978.2 985.1 989.0 2010 - - 988.9 985.8 987.4 988.8 992.1 992.5 - 986.2 988.6 981.0 2011 993.0 989.9 - 986.8 989.9 992.4 - 1003.2 993.4 988.5 989.0 - 2012 - 985.8 - 996.1 993.4 977.1 989.6 989.1 994.5 982.3 986.2 993.7 2013 988.5 988.4 997.1 989.6 987.0 980.2 - 990.8 998.8 985.1 981.1 986.6 2014 991.1 990.4 984.9 997.3 994.2 994.7 - 993.5 997.8 980.0 981.3 982.9 2015 991.7 988.0 988.8 988.3 990.8 984.5 985.7 985.8 985.3 992.9 984.8 - 2016 - 986.0 - - 1003.1 - - - - - - - 2017 - 994.9 1003.5 995.0 990.5 988.6 986.0 990.4 - 985.5 988.4 - 2018 986.4 985.8 983.3 989.5 990.9 - 994.9 990.3 993.2 - 981.4 - 2019 984.7 991.3 991.8 987.8 988.4 993.2 1002.6 995.7 991.2 990.9 988.7 993.4 2020 991.2 995.0 989.3 990.7 997.7 993.8 1001.9 993.6 988.3 984.6 986.4 984.3 2021 988.3 989.4 986.7 989.2 996.9 997.6 994.5 985.3 986.4 981.0 987.9 983.8 2022 988.8 988.3 995.6 989.3 994.7 989.7 990.3 995.1 991.0 - 984.8 985.7 2023 986.1 989.7 983.2 989.9 985.1 994.8 996.2 988.8 996.5 983.3 984.9 986.7 2024 986.9 989.4 990.2 983.5 - - - - - - - -