Orcadas mean sea level pressure
| Year
| Jan
| Feb
| Mar
| Apr
| May
| Jun
| Jul
| Aug
| Sep
| Oct
| Nov
| Dec
|
1903 | - | - | - | 989.7 | 994.3 | 991.6 | 988.1 | 992.5 | 990.8 | 994.3 | 986.7 | 989.6
|
|---|
1904 | 988.8 | 988.5 | 986.7 | 994.5 | 995.2 | 996.9 | 992.9 | 999.3 | 997.1 | 994.4 | 1002.8 | 994.4
|
|---|
1905 | 993.3 | 983.7 | 994.4 | 989.7 | 991.6 | 984.1 | 1002.0 | 989.1 | 985.1 | 985.3 | 990.5 | 992.1
|
|---|
1906 | 994.5 | 993.1 | 984.0 | 990.1 | 986.3 | 1003.5 | 995.3 | 991.3 | 992.3 | 995.1 | 981.7 | 987.3
|
|---|
1907 | 984.3 | 992.0 | 986.9 | 991.7 | 982.9 | 991.1 | 998.0 | 1007.2 | 994.7 | 995.2 | 985.1 | 995.1
|
|---|
1908 | 989.1 | 990.5 | 989.5 | 990.3 | 992.8 | 1001.5 | 986.1 | 993.5 | 994.4 | 991.2 | 987.2 | 997.1
|
|---|
1909 | 988.5 | 990.4 | 993.6 | 983.1 | 989.5 | 993.3 | 994.5 | 991.2 | 993.6 | 995.9 | 987.6 | 993.3
|
|---|
1910 | 987.7 | 994.7 | 996.5 | 990.5 | 993.5 | 992.8 | 996.5 | 991.9 | 990.0 | 992.1 | 986.3 | 991.2
|
|---|
1911 | 992.8 | 994.0 | 988.5 | 999.1 | 1008.9 | 995.5 | 993.5 | 989.6 | 995.9 | 988.1 | 992.1 | 1002.7
|
|---|
1912 | 997.2 | 988.8 | 982.7 | 985.1 | 986.0 | 997.7 | 989.9 | 996.9 | 988.4 | 991.2 | 980.0 | 994.5
|
|---|
1913 | 990.9 | 986.1 | 992.3 | 990.0 | 985.3 | 1000.7 | 992.8 | 998.5 | 988.8 | 988.8 | 987.9 | 997.7
|
|---|
1914 | 992.5 | 989.1 | 991.7 | 989.9 | 986.1 | 991.3 | 997.6 | 993.6 | 994.8 | 980.5 | 984.9 | 992.9
|
|---|
1915 | 986.5 | 987.1 | 994.1 | 985.1 | 993.9 | 991.6 | 995.3 | 996.7 | 997.6 | 998.9 | 990.7 | 991.7
|
|---|
1916 | 988.0 | 993.5 | 994.0 | 993.6 | 992.4 | 997.3 | 1000.3 | 1003.2 | 992.9 | 995.9 | 988.9 | 988.8
|
|---|
1917 | 984.0 | 992.8 | 988.0 | 994.9 | 998.1 | 992.3 | 997.2 | 995.1 | 1005.9 | 991.2 | 987.6 | 988.8
|
|---|
1918 | 988.3 | 989.9 | 992.8 | 990.5 | 996.5 | 1000.7 | 990.5 | 998.1 | 1002.9 | 992.7 | 991.7 | 992.4
|
|---|
1919 | 992.1 | 991.9 | 991.7 | 992.8 | 1001.7 | 996.1 | 992.4 | 988.7 | 986.5 | 986.9 | 985.6 | 994.0
|
|---|
1920 | 991.7 | 990.4 | 997.3 | 989.7 | 990.7 | 1004.7 | 990.7 | 994.7 | 987.9 | 993.1 | 997.1 | 993.3
|
|---|
1921 | 986.5 | 995.5 | 996.4 | 992.8 | 996.9 | 1000.9 | 991.6 | 988.9 | 995.2 | 996.4 | 984.5 | 994.1
|
|---|
1922 | 987.6 | 993.7 | 987.5 | 984.8 | 987.5 | 996.3 | 992.9 | 989.9 | 989.7 | 999.2 | 987.1 | 995.3
|
|---|
1923 | 995.9 | 996.5 | 996.0 | 983.5 | 989.2 | 993.7 | 996.8 | 1000.0 | 989.2 | 1001.9 | 994.7 | 984.3
|
|---|
1924 | 992.0 | 989.6 | 990.1 | 999.6 | 987.3 | 994.4 | 996.0 | 996.3 | 995.1 | 990.9 | 987.5 | 988.9
|
|---|
1925 | 986.8 | 992.1 | 982.7 | 985.9 | 994.0 | 1000.9 | 995.2 | 987.7 | 989.6 | 991.1 | 983.7 | 998.5
|
|---|
1926 | 1002.5 | 1003.3 | 985.9 | 997.5 | 999.2 | 999.3 | 995.1 | 998.0 | 988.4 | 1000.3 | 988.3 | 992.7
|
|---|
1927 | 994.3 | 985.3 | 991.6 | 986.8 | 984.0 | 991.7 | 988.7 | 995.9 | 998.1 | 989.6 | 990.1 | 992.7
|
|---|
1928 | 984.3 | 985.5 | 990.0 | 998.0 | 992.5 | 1002.7 | 995.5 | 993.3 | 990.3 | 995.1 | 989.9 | 992.7
|
|---|
1929 | 998.4 | 988.6 | 990.7 | 993.1 | 994.1 | 992.1 | 989.9 | 991.9 | 989.2 | 988.0 | 990.8 | 993.2
|
|---|
1930 | 988.5 | 988.3 | 985.5 | 985.2 | 990.4 | 989.3 | 995.7 | 993.9 | 991.9 | 991.7 | 993.2 | 993.1
|
|---|
1931 | 994.1 | 995.7 | 988.5 | 995.3 | 996.8 | 994.5 | 990.0 | 993.7 | 994.4 | 990.5 | 988.7 | 994.5
|
|---|
1932 | 991.2 | 984.1 | 987.5 | 999.9 | 990.7 | 1001.2 | 992.5 | 996.8 | 988.9 | 991.1 | 981.1 | 985.6
|
|---|
1933 | 997.6 | 990.5 | 994.7 | 991.9 | 990.0 | 995.6 | 996.4 | 990.9 | 991.7 | 992.7 | 981.2 | 989.6
|
|---|
1934 | 994.4 | 992.5 | 992.3 | 989.2 | 990.1 | 1001.2 | 985.5 | 990.4 | 995.9 | 985.6 | 989.9 | 982.7
|
|---|
1935 | 991.3 | 991.3 | 980.3 | 989.7 | 991.5 | 1000.8 | 1000.9 | 993.9 | 992.1 | 997.1 | 986.0 | 993.2
|
|---|
1936 | 996.4 | 989.9 | 986.5 | 991.1 | 987.5 | 994.9 | 997.3 | 1001.3 | 991.9 | 990.8 | 988.4 | 989.6
|
|---|
1937 | 995.1 | 993.7 | 993.3 | 989.9 | 996.7 | 992.4 | 992.0 | 1000.0 | 985.5 | 991.5 | 987.7 | 993.9
|
|---|
1938 | 986.7 | 986.5 | 994.5 | 991.9 | 1000.9 | 994.5 | 990.0 | 987.2 | 991.5 | 986.3 | 987.9 | 996.0
|
|---|
1939 | 998.0 | 985.7 | 993.6 | 991.9 | 994.5 | 995.6 | 990.1 | 1000.0 | 987.2 | 992.7 | 984.0 | 993.2
|
|---|
1940 | 991.6 | 1003.2 | 989.9 | 987.6 | 985.7 | 992.7 | 995.6 | 991.9 | 991.5 | 994.0 | 993.5 | 986.3
|
|---|
1941 | 988.1 | 992.4 | 996.7 | 983.7 | 995.5 | 985.2 | 1006.0 | 992.8 | 991.5 | 984.7 | 993.9 | 996.7
|
|---|
1942 | 989.1 | 990.9 | 989.2 | 991.7 | 997.1 | 994.4 | 995.9 | 994.4 | 1003.6 | 996.8 | 998.1 | 988.8
|
|---|
1943 | 991.5 | 995.1 | 988.8 | 990.4 | 989.6 | 995.6 | 992.4 | 992.4 | 999.2 | 987.7 | 985.1 | 986.5
|
|---|
1944 | 992.0 | 988.1 | 991.9 | 994.5 | 988.4 | 985.7 | 1001.1 | 995.1 | 994.3 | 1000.4 | 1000.3 | 1004.3
|
|---|
1945 | 990.4 | 998.0 | 990.1 | 988.0 | 1005.5 | 995.7 | 993.6 | 1003.9 | 997.9 | 982.4 | 989.9 | 997.1
|
|---|
1946 | 990.4 | 990.7 | 1001.1 | 992.0 | 994.3 | 994.4 | 1002.7 | 990.7 | 1000.1 | 981.6 | 991.2 | 989.2
|
|---|
1947 | 993.6 | 991.7 | 995.1 | 985.2 | 992.3 | 989.6 | 1000.3 | 996.5 | 986.7 | 990.1 | 985.5 | 986.1
|
|---|
1948 | 996.1 | 982.9 | 991.3 | 992.8 | 990.4 | 991.1 | 994.8 | 1001.2 | 1001.1 | 991.3 | 982.4 | 990.0
|
|---|
1949 | 988.7 | 990.1 | 991.6 | 989.5 | 999.2 | 995.3 | 997.2 | 985.6 | 987.3 | 992.4 | 979.5 | 999.5
|
|---|
1950 | 996.9 | 988.8 | 998.3 | 987.7 | 997.5 | 997.7 | 992.3 | 988.9 | 997.3 | 994.0 | 987.3 | 989.3
|
|---|
1951 | 983.7 | 987.3 | 996.9 | 994.8 | 995.3 | 988.4 | 989.0 | 998.0 | 989.3 | 994.6 | 1002.6 | 996.6
|
|---|
1952 | 991.3 | 989.3 | 985.2 | 995.8 | 987.0 | 1005.0 | 991.8 | 996.1 | 992.6 | 990.6 | 985.4 | 980.8
|
|---|
1953 | 987.4 | 984.9 | 987.6 | 987.0 | 996.6 | 986.4 | 993.2 | 997.6 | 1003.2 | 985.4 | 988.2 | 994.4
|
|---|
1954 | 983.3 | 987.2 | 990.8 | 990.2 | 990.5 | 996.8 | 994.2 | 992.5 | 990.8 | 995.7 | 991.6 | 998.2
|
|---|
1955 | 992.5 | 986.4 | 987.6 | 987.4 | 993.0 | 990.2 | 992.1 | 998.1 | 997.7 | 995.6 | 983.7 | 988.8
|
|---|
1956 | - | 993.0 | 994.0 | 1000.9 | 1002.4 | 996.0 | 999.4 | 1001.4 | 993.2 | 990.1 | 987.7 | 988.0
|
|---|
1957 | 989.4 | 996.1 | 985.5 | 993.5 | 990.3 | 988.1 | 987.3 | 1003.4 | 995.8 | 985.4 | 998.9 | 996.0
|
|---|
1958 | 988.5 | 994.4 | 995.5 | 991.0 | 992.7 | 991.5 | 1004.1 | 986.5 | 987.0 | 988.4 | 992.7 | 984.9
|
|---|
1959 | 981.7 | 984.9 | 990.9 | 989.1 | 985.0 | 1000.5 | 992.2 | 994.7 | 990.7 | 992.9 | 977.5 | 988.6
|
|---|
1960 | 991.3 | 993.5 | 990.2 | 983.3 | 992.1 | 998.1 | 991.1 | 986.1 | 998.2 | 991.4 | 977.0 | 991.3
|
|---|
1961 | 992.9 | 993.2 | 986.6 | 995.7 | 982.8 | 991.9 | 996.9 | 994.0 | 993.0 | 983.1 | 980.9 | 983.1
|
|---|
1962 | 994.6 | 992.1 | 990.1 | 993.4 | 1001.6 | 989.9 | 994.9 | 998.6 | 996.2 | 999.0 | 988.4 | 989.1
|
|---|
1963 | 983.3 | 989.6 | 982.8 | 989.7 | 993.1 | 993.9 | 996.7 | 998.9 | 997.1 | 987.0 | 994.9 | 991.4
|
|---|
1964 | 996.5 | 988.6 | 993.3 | 989.4 | 991.4 | 993.5 | 1009.5 | 987.3 | 996.3 | 992.4 | 991.2 | 998.2
|
|---|
1965 | 992.5 | 1001.4 | 998.1 | 991.8 | 988.7 | 990.1 | 996.5 | 1000.7 | 987.9 | 983.9 | 983.7 | 990.2
|
|---|
1966 | 990.9 | 987.8 | 990.5 | 991.5 | 988.2 | 997.0 | 993.8 | 991.9 | 990.0 | 989.5 | 992.5 | 990.8
|
|---|
1967 | 995.2 | 992.2 | 989.9 | 991.8 | 990.3 | 999.8 | 993.9 | 999.5 | 993.8 | 989.1 | 986.6 | 992.7
|
|---|
1968 | 987.5 | 991.5 | 991.6 | 996.0 | 989.5 | 987.5 | 989.5 | 991.9 | 990.5 | 992.1 | 990.3 | 991.0
|
|---|
1969 | 993.5 | 988.0 | 987.0 | 990.5 | 990.7 | 992.7 | 997.5 | 998.6 | 996.5 | 982.0 | 988.5 | 991.1
|
|---|
1970 | 993.2 | 990.1 | 993.5 | 984.5 | 987.8 | 998.3 | 1000.0 | 996.5 | 999.6 | 996.0 | 993.3 | 988.3
|
|---|
1971 | 991.3 | 989.5 | 989.1 | 991.3 | 999.9 | 997.1 | 1002.3 | 989.8 | 994.6 | 993.5 | 986.9 | 992.7
|
|---|
1972 | 993.9 | 990.3 | 993.0 | 991.4 | 994.9 | 994.8 | 995.7 | 1001.4 | 991.9 | 995.3 | 985.7 | 996.1
|
|---|
1973 | 986.6 | 986.7 | 984.3 | 981.0 | 989.5 | 996.5 | 1001.3 | 990.0 | 991.7 | 996.3 | 991.6 | 986.2
|
|---|
1974 | 990.0 | 991.9 | 993.0 | 989.2 | 993.2 | 1005.5 | 989.9 | 995.1 | 985.5 | 993.1 | 994.8 | 996.5
|
|---|
1975 | 990.8 | 984.9 | 988.9 | 994.1 | 992.6 | 998.7 | 997.1 | 989.5 | 995.9 | 991.9 | 986.6 | 987.6
|
|---|
1976 | 993.4 | 991.5 | 991.0 | 987.8 | 987.6 | 992.2 | 984.6 | 983.1 | 987.4 | 995.4 | 1002.3 | 997.4
|
|---|
1977 | 992.8 | 988.2 | 986.2 | 993.4 | 984.2 | 987.4 | 999.9 | 997.1 | 986.7 | 988.3 | 990.2 | 994.1
|
|---|
1978 | 991.4 | 993.3 | 995.1 | 993.5 | 1005.0 | 987.3 | 1001.0 | 987.5 | 996.6 | 987.7 | 990.6 | 986.8
|
|---|
1979 | 995.3 | 992.5 | 994.6 | 985.9 | 996.1 | 987.9 | 991.4 | 991.9 | 993.7 | 986.5 | 992.1 | 998.8
|
|---|
1980 | 990.6 | 994.5 | 989.9 | 991.4 | 997.7 | 987.3 | 995.7 | 995.4 | 993.8 | 990.9 | 987.5 | 993.7
|
|---|
1981 | 990.1 | 987.8 | 996.3 | 998.5 | 993.5 | 992.2 | 998.1 | 988.6 | 990.5 | 990.5 | 986.1 | 986.3
|
|---|
1982 | 994.7 | 989.9 | 986.7 | 986.6 | 994.9 | 1003.5 | 987.8 | 996.2 | 991.1 | 985.9 | 987.0 | 998.1
|
|---|
1983 | 996.3 | 986.3 | 991.5 | 995.0 | 999.0 | 993.0 | 992.6 | 994.2 | 995.7 | 987.4 | 987.9 | 988.2
|
|---|
1984 | 986.5 | 992.2 | 995.3 | 987.0 | 991.4 | 997.4 | 1000.2 | 995.8 | 1003.7 | 992.3 | 986.2 | 1000.5
|
|---|
1985 | 998.7 | 986.0 | 991.0 | 992.1 | 998.0 | 1004.9 | 988.1 | 989.5 | 993.8 | 995.6 | 990.2 | 983.3
|
|---|
1986 | 985.7 | 988.6 | 993.5 | 991.8 | 998.0 | 988.7 | 987.0 | 990.5 | 987.9 | 993.7 | 983.7 | 985.6
|
|---|
1987 | 991.2 | 994.1 | 987.0 | 989.3 | 996.0 | 990.6 | 991.2 | 1001.6 | 989.9 | 999.0 | 987.1 | 990.3
|
|---|
1988 | 992.5 | 995.5 | 991.5 | 993.0 | 1000.8 | 997.9 | 995.3 | 996.9 | 995.0 | 1004.7 | 984.5 | 987.7
|
|---|
1989 | 991.0 | 992.9 | 994.9 | 990.3 | 991.8 | 986.9 | 1001.5 | 1002.0 | 993.3 | 988.7 | 987.7( 93) | 993.3
|
|---|
1990 | 995.7 | 993.3 | 989.7 | 986.5( 90) | 1003.0 | 989.9 | 998.0 | 985.1 | 995.7( 92) | 982.0 | 981.0 | 986.7
|
|---|
1991 | 987.0 | 995.1 | 993.0 | 995.1( 91) | 988.0 | 990.0 | 993.0 | 992.0 | 1002.0 | 986.0 | 992.0 | 1000.0
|
|---|
1992 | 996.6( 56) | 984.0( 64) | 991.4( 49) | 1004.1( 75) | 998.9( 74) | 1000.9( 75) | 997.1( 77) | 992.5( 72) | 993.6( 82) | 991.3( 94) | 993.8( 53) | 1001.5( 52)
|
|---|
1993 | 997.5 | 994.4( 95) | 989.8( 91) | 989.3( 92) | 992.6( 99) | 993.5(100) | 998.5( 90) | 991.7( 95) | 987.2( 97) | 984.6( 94) | 990.1( 95) | 986.6( 91)
|
|---|
1994 | 985.9( 95) | 989.3( 77) | 992.2 | 996.9( 98) | 994.4 | 1000.6 | 993.5( 93) | 996.4( 94) | 986.8 | 989.0 | 998.6( 78) | 990.9
|
|---|
1995 | 996.7 | 994.0 | 985.1 | 996.3( 91) | 995.6 | 985.6( 93) | 990.1( 94) | 993.9 | 992.0 | 996.2( 90) | 983.3( 91) | 986.6( 94)
|
|---|
1996 | 994.0 | 996.8( 91) | 987.8( 98) | 993.2( 92) | 988.2( 91) | 992.9( 97) | 994.4( 92) | 991.2( 97) | 1004.5( 98) | 989.4( 96) | 982.1 | 992.3
|
|---|
1997 | 991.6( 91) | 993.4( 94) | 990.0( 91) | 986.1( 93) | 999.6( 91) | 1000.4( 91) | 991.1( 93) | 988.7( 92) | 988.9( 99) | 992.1( 98) | 995.1( 92) | 998.0( 92)
|
|---|
1998 | 986.3( 90) | 990.9( 90) | 993.5( 95) | 996.5( 93) | 995.9 | 996.7( 98) | 982.6( 95) | 990.3( 90) | 991.8( 93) | 986.6( 99) | 987.6 | 983.9
|
|---|
1999 | 992.4 | 989.9 | 998.7( 93) | 990.8( 96) | 994.3( 90) | 998.8( 95) | 993.5(100) | 988.3( 93) | 992.6( 98) | 985.8( 94) | 992.2( 92) | 986.9( 98)
|
|---|
2000 | 983.7( 96) | 996.9( 95) | 1004.4 | 991.3( 90) | 998.6 | 1000.5( 92) | 1007.7( 98) | 991.5( 98) | 1002.4( 96) | 989.5 | 995.0( 93) | 991.8( 95)
|
|---|
2001 | 994.6( 98) | 988.5(100) | 990.0( 87) | 989.3( 97) | 1003.9( 99) | 991.8(100) | 991.7( 91) | 987.9( 96) | 992.6( 99) | 992.0( 98) | 989.4( 85) | 989.9( 87)
|
|---|
2002 | 992.2( 88) | 990.6( 98) | 990.7( 74) | 991.6( 65) | 992.7( 75) | 988.4( 74) | 996.3( 73) | 1000.1( 73) | 1006.1( 75) | 993.7( 75) | 991.4( 69) | 994.5( 75)
|
|---|
2003 | 992.7( 72) | 992.6( 72) | 994.2( 67) | 994.5( 72) | 994.6( 73) | 1001.6( 68) | 987.7( 73) | 992.5( 65) | 996.4( 59) | 988.5( 67) | 984.0( 66) | 995.2( 75)
|
|---|
2004 | 989.5( 92) | 998.2( 96) | 993.2( 85) | 993.8( 80) | 990.6( 88) | 991.0( 75) | 997.5( 73) | 993.4( 72) | 983.0( 98) | 991.9( 63) | 999.1( 59) | 994.6( 94)
|
|---|
2005 | 989.3( 81) | 989.5( 93) | 995.0( 81) | 985.8( 93) | 996.0( 94) | 994.9( 89) | 999.3( 93) | 994.9( 87) | 1001.7( 88) | 997.6( 86) | 989.9( 89) | 991.4( 92)
|
|---|
2006 | 993.1( 99) | 998.5( 96) | 988.7( 97) | 997.8( 92) | 994.8( 85) | 996.9( 85) | 995.7( 86) | 1001.4( 97) | 993.3( 93) | 995.5( 85) | 986.6( 89) | 989.7( 91)
|
|---|
2007 | 988.4( 98) | 989.9( 97) | 988.2(100) | 991.0(100) | 1000.2( 98) | 990.1(100) | 995.3(100) | 992.7(100) | 1001.2(100) | 988.1(100) | 992.4( 98) | 988.7( 98)
|
|---|
2008 | 990.1( 97) | 993.2( 95) | 992.6( 97) | 990.4( 98) | 998.7( 98) | 996.4( 98) | 1001.3( 99) | 995.6( 99) | 1006.5( 98) | 991.7( 94) | 985.9( 95) | 981.8( 92)
|
|---|
2009 | 990.3( 93) | - | - | - | - | - | - | - | - | - | - | -
|
|---|
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