YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1910 | 0.88 | 0.00 | 0.50 | 0.45 | 0.15 | 1.78 | 4.78 | 2.24 | e | 1.44 | 0.05 | 0.67 | 0.05 | 12.99 | ||||||||||||
1911 | 1.05 | 1.90 | 0.41 | c | 0.35 | 0.02 | 1.10 | c | 4.31 | a | 3.51 | 3.80 | 1.67 | 0.15 | e | 0.99 | a | 19.26 | ||||||||
1912 | 0.11 | b | 1.07 | 3.61 | 0.40 | 0.45 | 0.58 | 8.51 | a | 3.14 | d | 0.04 | 0.58 | 0.00 | 0.36 | 18.85 | ||||||||||
1913 | 0.28 | h | 3.82 | 0.12 | 0.35 | 0.00 | 0.40 | 3.75 | 1.76 | 0.61 | 0.32 | 4.39 | 0.92 | 16.44 | a | |||||||||||
1914 | 1.42 | 0.92 | 0.94 | 0.00 | g | 0.97 | 1.47 | 5.25 | 4.75 | 3.72 | 2.94 | 1.38 | 7.16 | 30.92 | a | |||||||||||
1915 | 2.37 | 1.99 | 1.33 | 1.01 | 0.00 | c | 0.02 | 4.59 | 1.49 | 0.20 | 0.00 | 0.67 | 2.64 | 16.31 | ||||||||||||
1916 | 2.72 | 0.34 | 1.69 | 0.25 | 0.91 | 0.00 | 4.53 | 3.93 | 1.67 | 1.23 | 0.00 | b | 0.65 | c | 17.92 | |||||||||||
1917 | 2.74 | 0.67 | 0.03 | 0.00 | 0.80 | 0.00 | 6.69 | a | 2.60 | 1.64 | 0.00 | 0.00 | 0.00 | 15.17 | ||||||||||||
1918 | 2.47 | 1.33 | 0.38 | 0.00 | 0.15 | 0.67 | a | 2.35 | 2.71 | 0.42 | 0.68 | 1.54 | 2.62 | 15.32 | ||||||||||||
1919 | 0.58 | 1.89 | 0.73 | 0.87 | 0.33 | 0.57 | 10.45 | 3.76 | 2.08 | 1.09 | 3.00 | 0.20 | 25.55 | |||||||||||||
1920 | 3.03 | 1.79 | 1.44 | 0.57 | 0.18 | 0.71 | 3.12 | 6.08 | 2.29 | 0.92 | 0.05 | 0.37 | 20.55 | |||||||||||||
1921 | 0.32 | 0.63 | 0.57 | ----- | z | ----- | z | ----- | z | 9.46 | 4.44 | ----- | z | ----- | z | ----- | z | ----- | z | 15.42 | g | |||||
1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1923 | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | f | 0.10 | 6.94 | 6.32 | 1.42 | 0.00 | 3.04 | 1.99 | 19.81 | e | |||||||
1924 | 0.04 | 0.00 | 2.39 | 0.92 | 0.00 | 0.16 | 4.12 | 1.98 | 0.22 | 0.00 | 0.09 | 0.97 | 10.89 | |||||||||||||
1925 | 0.30 | 0.00 | 0.17 | 0.23 | 0.34 | 2.27 | 6.67 | 2.52 | 0.27 | 1.61 | 0.99 | 0.52 | 15.89 | |||||||||||||
1926 | 1.40 | 1.31 | 2.92 | 2.11 | 0.62 | 0.01 | 3.12 | 1.19 | 6.77 | 1.07 | 0.00 | 3.11 | 23.63 | |||||||||||||
1927 | 0.04 | 0.80 | 1.46 | 0.66 | 0.08 | 1.20 | 4.97 | 5.97 | 2.31 | 0.24 | 0.35 | 1.88 | 19.96 | |||||||||||||
1928 | 0.00 | 5.21 | 0.00 | 0.07 | 0.48 | 0.32 | 4.24 | 6.86 | 0.30 | 2.79 | 0.63 | 0.48 | 21.38 | |||||||||||||
1929 | 1.07 | 1.08 | 0.39 | 0.21 | 0.01 | 1.17 | 7.93 | 6.84 | 2.09 | 0.54 | 0.63 | 0.77 | 22.73 | |||||||||||||
1930 | 2.35 | 0.57 | 3.43 | 0.25 | 0.84 | 2.58 | 4.67 | m | 2.60 | g | 0.38 | 0.09 | 2.65 | 0.28 | 13.42 | b | ||||||||||
1931 | 0.85 | 5.06 | 0.05 | 0.76 | 0.18 | 3.58 | 3.61 | a | 8.28 | r | 2.85 | 0.11 | 2.30 | 1.19 | 20.54 | a | ||||||||||
1932 | 1.81 | 2.09 | 0.30 | 0.06 | a | 0.00 | 0.28 | 9.76 | a | 2.39 | 0.66 | 0.52 | 0.00 | 2.53 | 20.40 | |||||||||||
1933 | 1.62 | 1.06 | 0.00 | 0.06 | 0.00 | 1.95 | 2.90 | 3.74 | 4.02 | 1.76 | 2.00 | 0.02 | 19.13 | |||||||||||||
1934 | 0.69 | 1.08 | 0.20 | 0.86 | 0.38 | 0.33 | 3.57 | 5.61 | 0.40 | 0.60 | 0.81 | 3.00 | 17.53 | |||||||||||||
1935 | 1.39 | 3.63 | 0.90 | 0.15 | 0.13 | 0.06 | 3.24 | 6.36 | 2.77 | 0.00 | 2.12 | 1.35 | 22.10 | |||||||||||||
1936 | 1.04 | 1.01 | 0.20 | 0.00 | 0.10 | 0.62 | 4.16 | 5.29 | 2.27 | 0.00 | 2.02 | 1.54 | 18.25 | |||||||||||||
1937 | 1.92 | 0.25 | 1.40 | 0.10 | a | 0.01 | 1.50 | 2.26 | 4.08 | g | 2.00 | 1.11 | 0.00 | 1.48 | 12.03 | a | ||||||||||
1938 | 0.80 | 0.92 | 1.26 | a | 0.15 | 0.22 | 1.51 | 2.88 | 4.08 | 2.15 | 0.00 | 0.00 | 1.93 | 15.90 | ||||||||||||
1939 | 0.77 | 1.24 | 0.59 | 0.11 | 0.00 | 0.40 | 2.55 | 4.52 | 2.80 | 1.10 | 0.55 | 0.67 | 15.30 | |||||||||||||
1940 | 0.65 | 3.51 | 0.20 | 0.30 | 0.09 | 3.40 | 2.25 | 4.17 | 1.27 | a | 0.60 | 0.99 | 3.05 | a | 20.48 | |||||||||||
1941 | 2.03 | d | 1.59 | b | 0.78 | a | 1.28 | 0.32 | 0.41 | 1.17 | 3.41 | 2.14 | 0.31 | 0.48 | 2.69 | 16.61 | ||||||||||
1942 | 0.87 | 1.43 | a | 0.21 | 2.06 | 0.00 | a | 0.06 | 2.81 | 2.70 | 0.85 | 0.83 | 0.00 | 0.87 | 12.69 | |||||||||||
1943 | 0.88 | 0.17 | 0.49 | 0.00 | 0.00 | 1.74 | 2.71 | 6.17 | 0.97 | 0.64 | 0.00 | 1.33 | 15.10 | |||||||||||||
1944 | 1.05 | 1.32 | 1.38 | 0.52 | 0.00 | 0.19 | 3.99 | 3.66 | 2.47 | a | 0.87 | 1.76 | 1.55 | a | 18.76 | |||||||||||
1945 | 1.10 | 0.32 | 1.32 | 0.28 | 0.00 | 0.00 | 3.54 | 5.97 | 1.02 | 2.30 | 0.00 | 0.15 | 16.00 | |||||||||||||
1946 | 2.30 | 0.10 | 0.50 | 0.07 | 0.00 | 0.15 | 6.44 | 6.13 | 2.57 | 1.16 | 0.65 | 0.61 | 20.68 | |||||||||||||
1947 | 0.46 | 0.47 | 0.12 | 0.16 | 0.42 | 0.04 | 2.00 | 6.66 | 0.75 | 0.68 | 0.82 | 0.72 | 13.30 | |||||||||||||
1948 | 0.00 | 1.90 | 0.88 | 0.00 | 0.00 | 0.42 | 3.96 | 5.47 | 2.20 | 0.55 | 0.00 | 1.86 | 17.24 | |||||||||||||
1949 | 3.01 | 0.80 | 0.35 | 0.11 | 0.00 | 1.11 | 4.10 | 3.72 | 3.03 | 1.62 | a | 0.10 | 2.01 | 19.96 | ||||||||||||
1950 | 0.74 | 0.92 | 0.29 | 0.00 | 0.00 | 1.25 | 10.02 | a | 1.13 | a | 0.00 | 0.04 | 0.00 | 0.00 | 14.39 | |||||||||||
1951 | 1.56 | 0.37 | a | 0.32 | 2.50 | 0.00 | 0.00 | 5.30 | 5.99 | 0.67 | 1.58 | 0.68 | a | 2.18 | 21.15 | |||||||||||
1952 | 1.24 | 0.42 | 1.29 | c | 1.82 | 0.58 | 1.16 | 3.51 | 3.68 | 0.49 | 0.00 | 1.90 | 0.72 | c | 16.81 | |||||||||||
1953 | 0.00 | 1.50 | 1.00 | 0.08 | 0.00 | 0.00 | 1.91 | h | 1.08 | 0.00 | 0.10 | 0.02 | 0.15 | 3.93 | a | |||||||||||
1954 | 1.18 | 0.17 | 2.29 | 0.00 | 0.53 | 0.84 | 2.44 | 6.92 | k | 2.28 | m | 0.70 | 0.00 | 0.02 | 8.17 | b | ||||||||||
1955 | 1.93 | 0.47 | 0.31 | 0.00 | 0.04 | 0.00 | 6.47 | 8.85 | s | 0.06 | 1.25 | 0.22 | 0.26 | 11.01 | a | |||||||||||
1956 | 0.91 | 0.36 | 0.00 | 0.20 | 0.00 | 0.52 | 7.45 | 3.26 | 0.00 | 0.30 | 0.08 | 0.33 | 13.41 | |||||||||||||
1957 | 2.69 | ----- | z | ----- | z | 0.10 | p | 0.28 | 0.81 | 3.39 | 4.92 | 0.07 | 1.73 | 0.37 | 0.52 | 14.78 | c | |||||||||
1958 | 0.08 | 1.62 | 3.27 | 0.44 | 0.00 | 4.89 | 6.75 | 4.52 | 2.53 | 0.92 | 0.87 | 0.00 | 25.89 | |||||||||||||
1959 | 0.00 | 1.52 | 0.00 | 0.12 | 0.00 | 0.69 | 6.70 | 5.51 | 0.24 | 2.12 | 1.33 | 1.72 | 19.95 | |||||||||||||
1960 | 2.58 | 0.52 | 0.16 | 0.00 | 0.00 | 0.17 | 2.71 | 4.53 | 1.51 | 1.57 | 0.00 | 0.72 | 14.47 | |||||||||||||
1961 | 1.00 | 0.30 | 0.10 | 0.00 | 0.00 | 2.24 | 3.15 | 4.50 | 2.07 | 2.89 | 0.51 | 2.55 | 19.31 | |||||||||||||
1962 | 2.08 | 0.26 | 1.28 | 0.05 | 0.00 | 0.10 | 3.06 | 0.34 | 2.36 | 0.70 | 0.32 | 1.65 | 12.20 | |||||||||||||
1963 | 0.80 | 1.00 | 0.26 | 0.39 | 0.00 | 0.00 | 6.21 | 4.91 | 1.70 | 0.65 | 2.21 | 0.61 | 18.74 | |||||||||||||
1964 | 0.32 | 0.02 | 0.74 | 0.26 | 0.00 | 0.20 | 7.65 | 4.46 | 4.87 | 1.26 | 0.83 | 0.35 | 20.96 | |||||||||||||
1965 | 0.44 | 0.68 | 0.49 | 0.49 | 0.19 | 0.14 | 3.46 | 4.03 | 0.69 | 0.00 | 0.35 | 8.21 | 19.17 | |||||||||||||
1966 | 1.61 | 1.74 | 0.09 | 0.12 | 0.18 | 0.17 | 4.35 | 5.31 | 3.48 | 0.08 | 0.65 | 0.48 | 18.26 | |||||||||||||
1967 | 0.04 | 0.52 | 0.19 | 0.32 | 0.31 | 1.46 | 4.97 | 3.22 | 3.03 | 2.03 | 0.53 | 5.19 | 21.81 | |||||||||||||
1968 | 0.96 | 1.69 | 1.69 | 0.55 | 0.00 | 0.00 | 4.06 | 3.89 | 0.04 | 0.12 | 0.62 | 1.24 | 14.86 | |||||||||||||
1969 | 0.55 | 1.21 | 0.44 | 0.03 | 0.37 | 0.03 | 7.44 | 6.49 | 0.99 | 0.18 | 0.91 | 0.39 | 19.03 | |||||||||||||
1970 | 0.02 | 0.55 | 1.67 | 0.34 | 0.00 | 0.04 | 4.33 | 3.47 | 1.98 | 0.02 | 0.00 | 0.61 | 13.03 | |||||||||||||
1971 | 0.11 | 0.97 | 0.00 | 0.36 | 0.00 | 0.00 | 4.07 | 5.92 | 2.41 | 2.04 | 0.48 | 2.03 | 18.39 | |||||||||||||
1972 | 0.03 | 0.00 | 0.00 | 0.00 | 0.48 | 1.55 | 1.82 | 2.35 | 2.27 | 2.81 | 1.32 | 0.84 | 13.47 | |||||||||||||
1973 | 0.81 | 2.17 | 2.70 | 0.00 | 0.41 | 1.58 | 3.51 | 2.53 | 0.27 | 0.00 | 0.41 | 0.00 | 14.39 | |||||||||||||
1974 | 1.36 | 0.00 | 0.29 | 0.01 | 0.10 | 0.06 | 5.09 | 2.00 | 3.68 | 2.06 | 0.21 | 0.16 | 15.02 | |||||||||||||
1975 | 1.04 | 0.02 | 1.21 | 0.81 | 0.00 | 0.00 | 6.23 | 1.16 | 2.72 | 0.05 | 1.23 | 0.43 | 14.90 | |||||||||||||
1976 | 0.39 | 1.66 | 0.39 | 1.03 | 0.06 | 0.15 | 5.41 | 2.19 | 1.78 | 0.81 | 0.76 | 0.25 | 14.88 | |||||||||||||
1977 | 1.69 | 0.00 | 0.29 | 0.24 | 0.00 | 0.18 | 2.58 | 4.57 | 2.75 | 5.13 | 0.20 | 1.02 | 18.65 | |||||||||||||
1978 | 3.37 | 2.93 | 1.58 | 0.05 | 0.04 | 0.76 | 1.17 | 1.68 | 1.42 | 2.33 | 3.02 | 3.59 | 21.94 | |||||||||||||
1979 | 3.69 | 0.64 | 1.38 | 0.00 | 0.39 | 0.80 | 1.57 | 1.90 | 0.54 | 0.07 | 0.37 | 0.12 | 11.47 | |||||||||||||
1980 | 0.72 | 1.99 | 0.91 | 0.21 | 0.00 | 1.43 | 3.31 | 4.57 | 1.15 | 0.00 | 0.00 | 0.58 | 14.87 | |||||||||||||
1981 | 1.25 | 0.80 | 2.85 | 0.43 | 0.29 | 0.18 | 5.32 | 1.08 | 1.04 | 0.86 | 0.75 | 0.00 | 14.85 | |||||||||||||
1982 | 1.56 | 0.29 | 0.85 | 0.11 | 0.36 | 0.02 | 2.55 | 5.37 | 2.00 | 0.00 | 1.97 | 3.64 | 18.72 | |||||||||||||
1983 | 2.22 | 2.00 | 3.67 | 0.60 | 0.00 | a | 0.45 | 3.69 | 3.35 | 7.47 | 2.01 | 2.11 | 0.84 | 28.41 | ||||||||||||
1984 | 2.04 | 0.00 | 0.00 | 0.12 | 0.27 | 0.69 | 6.99 | 7.20 | 0.75 | 1.54 | 1.05 | 5.54 | 26.19 | |||||||||||||
1985 | 2.39 | 0.83 | 0.32 | 0.95 | 0.02 | 0.90 | 3.65 | 4.23 | 2.86 | 3.68 | 2.27 | 0.33 | 22.43 | |||||||||||||
1986 | 0.14 | 2.46 | 1.78 | 1.63 | 0.52 | 1.06 | 4.14 | 6.64 | 1.03 | 0.53 | 0.64 | 2.25 | 22.82 | |||||||||||||
1987 | 0.51 | 1.59 | 0.64 | 1.74 | 0.64 | 0.22 | f | 1.16 | 4.33 | 2.02 | 0.34 | 0.42 | 2.43 | 15.82 | a | |||||||||||
1988 | 1.50 | 0.15 | 0.40 | 1.90 | 0.00 | 0.49 | 4.34 | 3.85 | 1.33 | 2.40 | 0.84 | 0.14 | 17.34 | |||||||||||||
1989 | 1.06 | 0.28 | 0.66 | 0.00 | 0.47 | 0.01 | 3.69 | 1.92 | 0.45 | 3.25 | 0.02 | 0.16 | 11.97 | |||||||||||||
1990 | 0.67 | 0.82 | 0.28 | 0.35 | 0.24 | 0.80 | 6.80 | 5.84 | 2.08 | 1.01 | a | 0.85 | 1.94 | 21.68 | ||||||||||||
1991 | 1.73 | 2.22 | 2.44 | 0.00 | 0.00 | 0.49 | 1.45 | 2.79 | 2.33 | 0.55 | 0.94 | 3.71 | 18.65 | |||||||||||||
1992 | 1.61 | 1.46 | 3.74 | 0.55 | 1.74 | 0.08 | 4.81 | 4.75 | 1.74 | 0.31 | 0.05 | 3.47 | a | 24.31 | ||||||||||||
1993 | 7.99 | c | 2.22 | 0.61 | 0.00 | 0.27 | 0.00 | 1.68 | 5.20 | 0.50 | 0.53 | 1.31 | 0.20 | 20.51 | ||||||||||||
1994 | 0.30 | 1.13 | 1.53 | 0.40 | 0.11 | 0.70 | 4.58 | 3.47 | 1.39 | 0.26 | 3.56 | 3.92 | 21.35 | |||||||||||||
1995 | 1.47 | 1.82 | 0.66 | 0.47 | 0.10 | 0.04 | 1.30 | 4.55 | 1.69 | 1.18 | 0.65 | 0.58 | 14.51 | |||||||||||||
1996 | 0.06 | 0.79 | 0.26 | 0.13 | 0.00 | 0.28 | 4.91 | 1.36 | 0.86 | 0.89 | 0.52 | 0.00 | 10.06 | |||||||||||||
1997 | 1.99 | 1.45 | 0.21 | 0.67 | 0.56 | 0.01 | 1.44 | 5.62 | 1.45 | 0.81 | 0.90 | 3.25 | 18.36 | |||||||||||||
1998 | 0.09 | 3.85 | 1.73 | 0.26 | 0.00 | 0.00 | 3.97 | 2.19 | 0.63 | 0.30 | 0.58 | 0.53 | 14.13 | |||||||||||||
1999 | 0.00 | 0.05 | 0.32 | 1.54 | 0.00 | 0.94 | 5.90 | 4.10 | 1.60 | 0.00 | 0.00 | 0.03 | 14.48 | |||||||||||||
2000 | 0.08 | 0.66 | 1.14 | 0.04 | 0.00 | 3.76 | 2.55 | 5.08 | 1.12 | 9.16 | 1.98 | 0.26 | 25.83 | |||||||||||||
2001 | 1.99 | 0.48 | 0.85 | 1.90 | 0.22 | 1.37 | 5.51 | 2.41 | 1.33 | 0.58 | 0.33 | 1.29 | 18.26 | |||||||||||||
2002 | 0.58 | 0.66 | 0.01 | 0.00 | 0.00 | 0.00 | 3.77 | 2.50 | 1.95 | 0.68 | 0.07 | a | 1.05 | a | 11.27 | |||||||||||
2003 | 0.00 | 2.62 | 0.38 | 0.05 | 0.15 | 0.00 | 4.99 | 2.89 | 1.05 | ----- | z | ----- | z | ----- | z | 12.13 | c | |||||||||
2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
2005 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.28 | ----- | z | 4.18 | 1.22 | 0.42 | 0.00 | 0.12 | 6.22 | f | ||||||
2006 | ----- | z | 0.18 | 1.76 | 0.00 | 0.10 | 1.36 | 7.66 | 6.20 | 3.87 | 0.25 | 0.00 | 0.65 | 22.03 | a | |||||||||||
2007 | 3.15 | 0.05 | 1.20 | 0.25 | 0.03 | ----- | z | ----- | z | 5.25 | 3.51 | 0.62 | 1.56 | 2.58 | 18.20 | b | ||||||||||
2008 | ----- | z | ----- | z | ----- | z | 0.00 | 0.40 | ----- | z | ----- | z | ----- | z | 1.77 | ----- | z | ----- | z | ----- | z | 2.17 | i | |||
2009 | ----- | z | 0.00 | ----- | z | ----- | z | ----- | z | 1.54 | ----- | z | ----- | z | ----- | z | 0.71 | ----- | z | ----- | z | 2.25 | i | |||
2010 | 7.55 | 2.25 | 1.04 | 0.76 | 0.00 | 0.26 | 6.48 | 4.90 | 1.92 | 0.70 | 0.12 | 1.02 | 27.00 | |||||||||||||
2011 | 0.00 | a | 0.42 | 0.06 | ----- | z | ----- | z | 0.00 | a | 3.30 | 3.60 | 2.20 | a | 0.11 | d | 0.41 | e | 2.89 | b | 12.99 | b | ||||
2012 | 0.30 | 0.02 | c | 0.61 | a | 0.00 | x | ----- | z | ----- | z | 11.01 | c | 1.58 | w | 2.89 | y | ----- | z | 0.49 | y | ----- | z | 11.94 | h | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 1.29 | 1.14 | 0.92 | 0.44 | 0.20 | 0.73 | 4.52 | 3.99 | 1.73 | 1.01 | 0.82 | 1.40 | 18.03 | |||||||||||||
S.D. | 1.33 | 1.08 | 0.93 | 0.57 | 0.28 | 0.92 | 2.19 | 1.65 | 1.34 | 1.27 | 0.92 | 1.53 | 4.08 | |||||||||||||
SKEW | 2.56 | 1.53 | 1.42 | 1.80 | 2.38 | 2.06 | 0.84 | -0.10 | 1.49 | 3.33 | 1.51 | 1.95 | 0.33 | |||||||||||||
MAX | 7.99 | 5.21 | 3.74 | 2.50 | 1.74 | 4.89 | 11.01 | 7.20 | 7.47 | 9.16 | 4.39 | 8.21 | 28.41 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.16 | 0.34 | 0.00 | 0.00 | 0.00 | 0.00 | 10.06 | |||||||||||||
YRS | 95 | 97 | 96 | 93 | 95 | 96 | 95 | 93 | 97 | 97 | 96 | 96 | 81 |