YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1894 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 40.10 | k | 22.54 | b | 20.48 | b | 21.51 | j |
1895 | 0.48 | 0.64 | 17.45 | 34.73 | 44.94 | 55.10 | 52.87 | h | 54.55 | 52.34 | a | 29.74 | 22.41 | c | 14.48 | 29.72 | a | |||||||||
1896 | 9.70 | a | 11.38 | 15.10 | 32.59 | m | 53.10 | 54.97 | 58.26 | 58.42 | 46.07 | 33.24 | b | 20.40 | 17.23 | 34.35 | a | |||||||||
1897 | 7.90 | b | 14.79 | 17.29 | 33.74 | c | 42.19 | 51.63 | 61.16 | 53.03 | 53.27 | 41.58 | 21.73 | 9.53 | a | 33.99 | ||||||||||
1898 | 12.52 | 11.63 | a | 25.03 | 32.33 | 44.58 | 55.43 | 57.00 | j | 55.17 | a | 50.87 | 37.90 | 23.87 | 6.27 | e | 32.33 | a | ||||||||
1899 | 4.35 | -2.38 | b | 10.48 | 35.47 | 43.64 | c | 53.89 | b | 55.11 | v | 56.25 | k | 44.13 | 40.70 | a | 30.87 | 12.58 | 27.37 | b | ||||||
1900 | 12.70 | a | 0.56 | a | 14.40 | a | 35.40 | 45.03 | 51.33 | 55.90 | 62.42 | 49.50 | 45.82 | c | 21.86 | b | 16.00 | a | 34.24 | |||||||
1901 | 6.68 | c | 0.19 | b | 18.37 | a | 34.20 | 43.71 | 54.67 | 62.00 | 55.37 | a | 47.97 | 38.90 | 21.53 | 8.11 | d | 32.64 | ||||||||
1902 | 9.07 | b | 6.04 | 25.90 | 32.93 | b | 46.87 | 50.73 | 59.97 | 53.97 | 47.40 | 37.61 | 31.47 | 11.00 | b | 34.41 | ||||||||||
1903 | 6.19 | 7.50 | 28.06 | 33.17 | g | 45.52 | b | 49.27 | 57.26 | 53.90 | 47.73 | 37.35 | 22.28 | a | 4.93 | a | 32.73 | a | ||||||||
1904 | -0.59 | d | -2.72 | 19.48 | b | 28.63 | 44.52 | 51.76 | a | 55.74 | 53.13 | 49.79 | a | 39.00 | 27.96 | c | 10.45 | 31.43 | ||||||||
1905 | -0.58 | 0.71 | 23.77 | 33.17 | 42.42 | 52.80 | 58.32 | 57.03 | 50.81 | c | 36.42 | 25.33 | 15.87 | 33.01 | ||||||||||||
1906 | 12.90 | 5.82 | 14.27 | a | 35.73 | 42.90 | 53.67 | 56.57 | a | 60.96 | d | 54.03 | 37.48 | 28.00 | 14.90 | a | 34.77 | |||||||||
1907 | 10.36 | i | 7.58 | i | 25.57 | a | 27.13 | 36.81 | 52.23 | 56.07 | q | 54.66 | b | 48.67 | 34.97 | 25.33 | 15.20 | a | 35.62 | c | ||||||
1908 | 11.30 | a | 9.93 | 22.74 | 33.44 | c | 46.77 | 53.03 | 57.61 | 53.90 | a | 52.87 | 39.23 | 25.45 | a | 11.33 | d | 34.80 | ||||||||
1909 | 9.07 | a | 13.11 | a | 19.42 | 29.93 | b | 42.55 | 54.03 | 56.61 | 58.90 | 48.41 | a | 34.43 | c | 30.52 | a | 6.71 | 33.64 | |||||||
1910 | 6.71 | 4.25 | 30.61 | 35.24 | e | 39.87 | 53.67 | 57.81 | 57.48 | 48.40 | 40.33 | d | 22.43 | 9.26 | 33.84 | |||||||||||
1911 | 6.56 | d | 20.00 | m | 24.10 | 33.30 | 50.80 | a | 58.93 | 58.14 | b | 56.22 | d | 48.90 | a | 38.55 | 20.10 | 20.00 | 37.78 | a | ||||||
1912 | -11.55 | 3.90 | 12.58 | 35.26 | c | 45.71 | 51.43 | 58.55 | 55.71 | 51.80 | 39.16 | 28.03 | 17.16 | 32.31 | ||||||||||||
1913 | 8.00 | 3.43 | 15.83 | b | 35.80 | 44.45 | 55.73 | 57.77 | 57.52 | 48.59 | a | 40.43 | j | 30.80 | 22.29 | 34.56 | a | |||||||||
1914 | 16.90 | -1.25 | 20.13 | 31.33 | 47.84 | 53.53 | 61.61 | 56.06 | 50.41 | c | 43.07 | d | 25.32 | b | 6.47 | a | 34.29 | |||||||||
1915 | 4.42 | 18.54 | 18.68 | 40.00 | b | 41.52 | b | 49.07 | 55.10 | 50.90 | 48.97 | a | 39.52 | 27.83 | 14.16 | 34.06 | ||||||||||
1916 | 7.87 | 4.41 | 14.68 | 33.89 | b | 44.74 | d | 50.59 | a | 63.32 | 58.06 | 48.00 | 38.13 | 24.00 | a | 5.29 | 32.75 | |||||||||
1917 | 0.19 | -4.18 | 19.65 | 32.60 | 39.29 | 51.60 | 59.58 | 53.58 | 46.50 | 31.06 | 28.13 | 5.84 | 30.32 | |||||||||||||
1918 | -3.40 | a | 6.32 | 24.06 | 29.50 | 47.29 | 54.00 | 56.55 | 57.52 | 43.17 | 40.68 | 30.33 | 23.45 | 34.12 | ||||||||||||
1919 | 15.16 | 13.75 | 22.74 | 34.23 | 42.48 | 60.21 | a | 60.06 | 55.00 | 52.17 | a | 38.74 | 23.67 | 3.42 | 35.14 | |||||||||||
1920 | -1.68 | 6.59 | 20.35 | 28.80 | 42.48 | 56.27 | 54.40 | a | 53.70 | a | 51.77 | 44.35 | 26.93 | a | 16.87 | 33.40 | ||||||||||
1921 | 14.76 | b | 15.43 | 26.84 | 39.30 | 47.47 | a | 58.77 | 64.74 | 58.00 | 55.86 | a | 40.68 | 22.77 | 12.87 | 38.12 | ||||||||||
1922 | 0.87 | 4.68 | 22.23 | 34.27 | 51.17 | b | 56.67 | 57.52 | 57.35 | 52.13 | 39.58 | 33.23 | 10.90 | 35.05 | ||||||||||||
1923 | 10.10 | a | 0.11 | 12.58 | 31.62 | a | 42.87 | 58.37 | 60.19 | 54.27 | a | 49.10 | 36.13 | 29.54 | b | 23.00 | a | 33.99 | ||||||||
1924 | -5.58 | 11.93 | 19.32 | 32.57 | 39.26 | 51.48 | a | 55.29 | 56.00 | 45.00 | a | 41.63 | a | 24.72 | a | 4.77 | a | 31.37 | ||||||||
1925 | 7.23 | a | 13.22 | a | 22.07 | b | 37.31 | a | 38.84 | 55.27 | 57.48 | 56.35 | 53.97 | 31.40 | a | 23.33 | 8.90 | 33.78 | ||||||||
1926 | 6.90 | 15.36 | 13.20 | a | 28.47 | 44.45 | b | 50.40 | 57.57 | a | 57.87 | 48.47 | 36.47 | a | 20.90 | 7.77 | 32.32 | |||||||||
1927 | 4.39 | 15.79 | 27.47 | a | 34.90 | a | 42.93 | a | 50.25 | b | 55.84 | 50.68 | 52.43 | b | 40.58 | 26.83 | 6.61 | 34.06 | ||||||||
1928 | 10.90 | 12.18 | a | 19.87 | 28.23 | 45.33 | a | 50.38 | a | 58.90 | a | 57.17 | a | 45.20 | 41.65 | 30.17 | 18.93 | a | 34.91 | |||||||
1929 | -5.32 | 2.36 | 24.20 | a | 37.04 | b | 40.42 | 52.10 | 58.37 | a | 55.03 | 49.53 | 39.57 | a | 22.43 | 14.39 | 32.51 | |||||||||
1930 | 1.87 | 15.75 | 21.13 | 34.00 | 46.87 | 56.47 | 58.72 | b | 57.65 | 49.82 | b | 38.80 | a | 27.93 | a | 15.60 | a | 35.38 | ||||||||
1931 | 17.73 | a | 21.50 | 23.30 | a | 34.03 | 43.77 | a | 59.77 | 61.97 | 55.87 | 56.17 | a | 44.87 | 34.33 | 25.20 | a | 39.88 | ||||||||
1932 | 17.71 | 12.45 | 14.87 | 31.70 | 45.29 | 57.69 | a | 59.83 | a | 58.23 | 47.52 | a | 38.39 | 21.30 | 12.65 | 34.80 | ||||||||||
1933 | 18.77 | 5.58 | b | 21.55 | 33.28 | a | 47.48 | 61.30 | 61.28 | b | 54.83 | a | 53.80 | 36.80 | a | 22.77 | 12.52 | 35.83 | ||||||||
1934 | 16.73 | a | 6.41 | a | 18.65 | 33.20 | 48.13 | 58.23 | 60.53 | a | 54.71 | 49.37 | 41.47 | a | 32.10 | 8.42 | 35.66 | |||||||||
1935 | 2.52 | 13.25 | 22.80 | a | 32.17 | 40.97 | b | 52.07 | a | 64.87 | 59.10 | a | 49.37 | 38.55 | 24.79 | b | 14.26 | 34.56 | ||||||||
1936 | 0.73 | a | -5.72 | 23.42 | 29.23 | 50.23 | 52.00 | e | 61.48 | 59.94 | 52.97 | 36.94 | 22.33 | 16.19 | 33.31 | |||||||||||
1937 | 1.77 | 8.36 | 17.94 | 34.17 | 46.62 | b | 55.17 | 61.32 | 61.87 | 49.57 | 37.50 | a | 24.00 | 11.83 | b | 34.18 | ||||||||||
1938 | 7.68 | 16.93 | 27.14 | b | 36.10 | 46.19 | 54.77 | 60.26 | 61.30 | a | 50.47 | 43.81 | 27.93 | b | 13.97 | 37.21 | ||||||||||
1939 | 15.94 | 4.07 | 20.60 | a | 32.20 | 47.80 | a | 56.93 | 60.57 | a | 58.90 | a | 50.66 | a | 39.23 | a | 27.59 | a | 23.00 | 36.46 | ||||||
1940 | 3.50 | a | 14.69 | 16.73 | a | 31.13 | 43.06 | 55.40 | 60.77 | a | 58.32 | 51.67 | 41.87 | 25.34 | a | 17.10 | 34.97 | |||||||||
1941 | 12.70 | a | 8.63 | a | 15.67 | a | 39.66 | a | 50.73 | a | 57.07 | 59.47 | a | 56.94 | 51.77 | 41.87 | 30.43 | 22.03 | 37.25 | |||||||
1942 | 10.32 | 10.15 | a | 27.55 | 37.80 | 43.39 | 55.47 | 58.00 | c | 57.81 | 49.48 | a | 38.48 | 25.77 | 10.94 | 35.43 | ||||||||||
1943 | 4.26 | 8.52 | a | 14.87 | 31.80 | 45.57 | a | 58.63 | 61.00 | a | 59.55 | 46.00 | 38.26 | 23.23 | 14.26 | 33.83 | ||||||||||
1944 | 17.48 | 12.69 | 18.42 | 29.69 | a | 50.13 | a | 57.97 | 57.74 | 59.03 | a | 52.60 | 37.45 | 33.53 | 10.06 | 36.40 | ||||||||||
1945 | 5.00 | a | 7.52 | c | 30.58 | 34.90 | 40.97 | 49.76 | a | 56.35 | 57.71 | 48.77 | 36.52 | 26.63 | 8.81 | 33.63 | ||||||||||
1946 | 10.35 | 9.89 | 30.61 | 35.33 | 42.03 | 53.77 | 58.29 | 54.94 | 48.43 | 41.45 | ----- | z | ----- | z | 38.51 | b | ||||||||||
1947 | ----- | z | ----- | z | ----- | z | 32.25 | b | 41.13 | 52.10 | 58.45 | 63.55 | 52.40 | 47.40 | a | 23.55 | a | 13.39 | m | 46.35 | d | |||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | 9.48 | a | 18.42 | 35.10 | 48.29 | 52.33 | 58.29 | 55.16 | 46.70 | 38.65 | 16.68 | b | 11.06 | 35.47 | a | |||||||||
1952 | 7.74 | 14.59 | 17.77 | 36.43 | 43.81 | 56.23 | 60.90 | 56.19 | 46.17 | 29.00 | 26.90 | 18.34 | b | 34.51 | ||||||||||||
1953 | 13.52 | 10.39 | 23.32 | 32.50 | 44.74 | 56.63 | 59.10 | 57.97 | a | 47.73 | 40.32 | 29.37 | 17.71 | 36.11 | ||||||||||||
1954 | 5.68 | 20.64 | 20.71 | 35.24 | a | 38.58 | 57.33 | 59.56 | f | 55.52 | 49.67 | 37.67 | a | 28.38 | a | 15.13 | 33.14 | a | ||||||||
1955 | 8.03 | 8.93 | 17.13 | 39.67 | 46.45 | 53.45 | a | 64.35 | 60.81 | 47.97 | 40.32 | 21.23 | 8.26 | 34.72 | ||||||||||||
1956 | 7.74 | 7.66 | 15.13 | 29.20 | 43.45 | 56.28 | a | 56.58 | 57.63 | a | 45.43 | 41.81 | 26.43 | 16.13 | 33.62 | |||||||||||
1957 | 0.52 | 12.96 | 20.97 | 36.17 | a | 43.97 | 55.10 | 59.16 | 55.48 | 46.23 | 34.73 | a | 26.83 | 16.65 | 34.06 | |||||||||||
1958 | 11.81 | 6.79 | 21.67 | s | 32.73 | 40.81 | 48.00 | 56.03 | 55.97 | 49.43 | 41.10 | a | 27.47 | 5.23 | 34.12 | a | ||||||||||
1959 | -0.81 | 3.93 | 16.10 | 34.17 | 49.10 | 55.00 | 57.55 | 63.16 | 49.70 | 37.10 | 16.77 | 22.87 | 33.72 | |||||||||||||
1960 | 14.68 | 13.48 | 9.16 | 36.30 | 43.71 | 50.93 | 54.48 | 58.26 | 51.63 | 37.94 | 28.60 | 10.29 | 34.12 | |||||||||||||
1961 | 7.45 | 17.36 | 25.58 | 31.03 | 40.23 | 53.60 | 57.77 | 57.32 | 50.87 | 40.29 | 26.87 | 9.90 | 34.86 | |||||||||||||
1962 | 3.84 | 7.79 | 20.13 | 32.80 | 51.48 | 53.80 | 55.45 | 55.32 | 44.83 | 41.13 | 27.53 | 11.87 | 33.83 | |||||||||||||
1963 | -1.26 | 2.07 | 20.84 | 33.45 | a | 41.65 | 53.80 | 57.87 | 54.23 | 47.43 | 45.10 | 31.03 | 3.68 | 32.49 | ||||||||||||
1964 | 14.81 | 12.86 | 19.52 | 35.70 | 48.77 | 53.57 | 59.45 | 53.84 | 47.67 | 34.10 | 27.50 | 9.58 | 34.78 | |||||||||||||
1965 | 4.71 | 6.64 | 15.26 | 31.67 | 47.77 | 50.73 | 55.03 | 55.48 | 47.10 | 38.45 | 26.70 | 22.81 | 33.53 | |||||||||||||
1966 | -2.68 | 9.71 | 24.45 | 31.57 | 37.87 | 53.63 | 58.68 | 54.16 | 45.57 | 37.06 | 26.40 | 12.90 | 32.44 | |||||||||||||
1967 | 10.10 | 0.61 | 20.39 | 34.73 | 37.61 | 55.67 | 54.74 | 51.10 | 43.83 | 37.87 | 24.67 | 15.74 | 32.25 | |||||||||||||
1968 | 8.58 | 8.28 | 27.71 | 35.13 | 41.74 | 54.53 | 57.16 | 56.00 | 49.80 | 41.06 | 27.63 | 13.19 | 35.07 | |||||||||||||
1969 | 5.13 | 12.75 | 14.97 | 35.97 | 44.00 | 47.23 | 58.45 | 56.03 | 48.03 | 36.74 | 23.63 | 14.35 | 33.11 | |||||||||||||
1970 | -0.48 | 5.25 | 18.26 | 35.57 | 46.52 | 55.03 | 58.29 | 54.94 | 50.53 | 41.77 | 27.33 | 11.42 | 33.70 | |||||||||||||
1971 | 0.45 | 10.00 | 17.52 | 32.07 | 38.77 | 56.97 | 55.52 | 52.68 | 51.47 | 46.19 | 26.53 | 16.10 | 33.69 | |||||||||||||
1972 | 0.03 | 4.04 | a | 16.03 | 29.80 | 46.13 | 49.73 | 56.87 | 58.39 | 48.07 | 34.81 | 28.17 | 9.55 | 31.80 | ||||||||||||
1973 | 11.97 | 14.93 | 30.71 | 33.79 | a | 42.23 | 54.97 | 60.26 | 59.39 | 49.69 | a | 44.06 | 27.70 | 13.16 | 36.90 | |||||||||||
1974 | 9.90 | 8.21 | 22.13 | 35.77 | 42.29 | 50.17 | 58.00 | a | 56.10 | a | 41.93 | 37.23 | 28.50 | 19.32 | 34.13 | |||||||||||
1975 | 9.67 | a | 10.14 | 15.90 | a | 29.37 | 49.03 | 54.31 | a | 59.19 | 57.29 | 44.50 | 37.71 | 29.87 | ----- | z | 36.09 | a | ||||||||
1976 | 2.13 | 17.00 | 23.84 | 35.83 | 40.03 | 53.43 | b | 57.16 | 53.16 | 43.03 | 32.55 | 17.17 | 0.40 | a | 31.31 | |||||||||||
1977 | -6.26 | 12.36 | 29.29 | 38.73 | 50.20 | a | 51.97 | 62.10 | a | 54.19 | 52.40 | 37.84 | 26.07 | 10.52 | 34.95 | |||||||||||
1978 | 2.32 | 1.43 | 17.00 | 31.43 | 44.87 | 52.43 | 57.48 | 56.55 | 53.13 | 37.77 | a | 24.69 | a | 9.47 | a | 32.38 | ||||||||||
1979 | -4.10 | a | -0.26 | a | 19.68 | c | 32.11 | b | 41.63 | a | 53.00 | a | 59.35 | e | 56.23 | a | 49.79 | b | 36.20 | f | 25.60 | e | 15.48 | d | 31.68 | a |
1980 | 7.07 | b | 7.17 | 18.29 | 35.61 | b | 45.00 | b | 51.72 | e | 59.68 | 59.69 | b | 48.79 | b | 32.89 | c | 26.61 | b | 11.30 | a | 33.65 | ||||
1981 | 6.37 | d | 14.93 | 24.13 | 35.83 | 40.70 | a | 55.26 | c | 58.32 | c | 57.53 | a | 46.19 | d | 34.76 | b | 27.04 | e | ----- | z | 36.46 | a | |||
1982 | -4.19 | d | 6.62 | b | 18.60 | a | 30.69 | d | 51.04 | c | 46.88 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 24.94 | f |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 6.28 | 8.46 | 20.40 | 33.61 | 44.44 | 53.90 | 58.64 | 56.58 | 49.17 | 38.70 | 25.98 | 13.05 | 34.17 | |||||||||||||
S.D. | 6.51 | 5.92 | 4.87 | 2.81 | 3.62 | 2.97 | 2.33 | 2.62 | 2.95 | 3.57 | 3.64 | 5.35 | 1.64 | |||||||||||||
SKEW | -0.19 | -0.17 | 0.22 | -0.01 | 0.18 | 0.05 | 0.50 | 0.33 | -0.09 | -0.20 | -0.23 | 0.16 | 0.62 | |||||||||||||
MAX | 18.77 | 21.50 | 30.71 | 40.00 | 53.10 | 61.30 | 64.87 | 63.55 | 56.17 | 47.40 | 34.33 | 25.20 | 39.88 | |||||||||||||
MIN | -11.55 | -5.72 | 9.16 | 27.13 | 36.81 | 46.88 | 54.40 | 50.68 | 41.93 | 29.00 | 16.68 | 0.40 | 30.32 | |||||||||||||
YRS | 82 | 82 | 83 | 83 | 85 | 85 | 79 | 83 | 84 | 82 | 84 | 81 | 68 |