YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1912 | 0.00 | z | 0.00 | z | 0.00 | z | 1.50 | 1.81 | 7.45 | 0.25 | 0.00 | 1.05 | 8.30 | 1.15 | 2.25 | 23.76 | ||||||||||
1913 | 1.43 | 1.75 | 1.70 | 1.15 | 0.45 | 3.53 | 0.45 | 0.00 | 4.20 | 4.10 | 1.70 | 2.00 | 22.46 | |||||||||||||
1914 | 0.40 | 1.95 | 2.60 | 2.70 | 7.06 | 1.05 | 0.00 | 1.75 | 2.00 | 3.80 | 4.70 | 0.50 | 28.51 | |||||||||||||
1915 | 2.00 | 0.70 | 0.51 | e | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 3.21 | |||
1916 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | 0.00 | ||
1917 | 0.00 | 0.00 | 0.00 | 0.00 | 0.85 | 0.00 | 2.00 | 2.50 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 5.35 | |||||||||
1918 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
1919 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
1920 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
1921 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
1922 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
1923 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
1924 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
1925 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
1926 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
1927 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
1928 | 0.00 | z | 1.22 | 0.80 | 0.94 | 3.24 | 1.01 | 2.13 | 1.52 | 5.48 | 0.10 | 0.00 | z | 0.00 | z | 16.44 | ||||||||||
1929 | 0.00 | z | 0.11 | 2.02 | 1.23 | 3.21 | 0.85 | 0.79 | 0.00 | 1.05 | 2.62 | 0.14 | 0.55 | 12.57 | ||||||||||||
1930 | 0.16 | 0.03 | 1.64 | 4.67 | 1.53 | 3.82 | 0.33 | 0.02 | 0.29 | 4.04 | 2.66 | 0.31 | 19.50 | |||||||||||||
1931 | 4.74 | 0.65 | 1.42 | 2.52 | 8.22 | 4.25 | 3.88 | 4.66 | 0.00 | 0.00 | 0.20 | 3.33 | 33.87 | |||||||||||||
1932 | 0.61 | 3.48 | 0.82 | 0.46 | 1.19 | 0.11 | 6.35 | 4.81 | 9.93 | 0.54 | 0.67 | 0.57 | 29.54 | |||||||||||||
1933 | 1.44 | 2.65 | 0.34 | 1.12 | 1.33 | 0.67 | 2.67 | 1.52 | 1.52 | 1.04 | 0.21 | 0.36 | 14.87 | |||||||||||||
1934 | 3.49 | 0.19 | 0.61 | 3.21 | 2.02 | 0.18 | 3.12 | 0.78 | 2.56 | 1.32 | 1.96 | 2.49 | 21.93 | |||||||||||||
1935 | 0.27 | 0.70 | 0.93 | 1.19 | 1.35 | a | 4.27 | 2.69 | 2.03 | 2.80 | 0.57 | 0.45 | 2.21 | 19.46 | ||||||||||||
1936 | 0.18 | 0.09 | 0.32 | 1.30 | 3.93 | 4.52 | 1.78 | 2.16 | 8.22 | 1.46 | 1.40 | 0.82 | 26.18 | |||||||||||||
1937 | 0.47 | 0.20 | 1.23 | 0.12 | 0.95 | 2.14 | 1.42 | 0.07 | 1.06 | 0.80 | 0.49 | 5.75 | 14.70 | |||||||||||||
1938 | 1.17 | 0.28 | 0.34 | 1.61 | 1.29 | 1.70 | 1.68 | 0.79 | 0.55 | 0.01 | 0.05 | 1.29 | 10.76 | |||||||||||||
1939 | 0.85 | 0.33 | 0.19 | 0.00 | 9.09 | 0.40 | 2.25 | 2.69 | 1.92 | 3.22 | 1.55 | 1.13 | 23.62 | |||||||||||||
1940 | 0.43 | 1.72 | 1.10 | 3.43 | 6.58 | 5.62 | 0.27 | 3.20 | 0.19 | 0.76 | 0.86 | 1.68 | 25.84 | |||||||||||||
1941 | 1.57 | 1.17 | 1.67 | 4.88 | 3.13 | 0.79 | 1.01 | 1.97 | 3.82 | 1.39 | 0.69 | 0.55 | 22.64 | |||||||||||||
1942 | 0.69 | 1.11 | 1.86 | 0.95 | 2.87 | 0.85 | 2.64 | 2.34 | 8.32 | 0.86 | 0.26 | 0.76 | 23.51 | |||||||||||||
1943 | 1.06 | 0.09 | 0.13 | 0.18 | 3.40 | 4.58 | 0.96 | 0.01 | 3.00 | 3.55 | 2.09 | 1.07 | 20.12 | |||||||||||||
1944 | 0.94 | 0.67 | 1.04 | 0.01 | 5.76 | 1.14 | 0.04 | 11.38 | 0.63 | 0.33 | 1.51 | 2.01 | 25.46 | |||||||||||||
1945 | 0.95 | 0.93 | 3.19 | 5.07 | 1.51 | 0.61 | 0.50 | 0.37 | 7.34 | 8.54 | 0.50 | 0.28 | 29.79 | |||||||||||||
1946 | 1.39 | 0.22 | 0.34 | 7.15 | 4.17 | 3.38 | 0.68 | 2.83 | 3.12 | 3.15 | 0.24 | 0.84 | 27.51 | |||||||||||||
1947 | 1.51 | 0.05 | 0.25 | 0.98 | 5.29 | 3.23 | 0.58 | 2.95 | 0.16 | 1.20 | 0.76 | 0.74 | 17.70 | |||||||||||||
1948 | 0.18 | 1.37 | 0.27 | 0.74 | 3.26 | 4.57 | 0.68 | 0.02 | 3.20 | 6.69 | 0.90 | 0.92 | 22.80 | |||||||||||||
1949 | 1.09 | 2.56 | 0.62 | 4.45 | 1.22 | 6.13 | 1.53 | 2.52 | 2.74 | 2.81 | 0.00 | 1.90 | 27.57 | |||||||||||||
1950 | 0.66 | 1.34 | 0.10 | 0.84 | 4.95 | 4.31 | 3.92 | 2.35 | 2.91 | 0.10 | 0.03 | 0.00 | 21.51 | |||||||||||||
1951 | 0.08 | 0.73 | 2.46 | 0.37 | 6.25 | 1.12 | 0.23 | 0.19 | 4.86 | 0.14 | 0.17 | 0.18 | 16.78 | |||||||||||||
1952 | 0.07 | 0.71 | 0.95 | 0.14 | 7.16 | 0.86 | 0.14 | 0.00 | 0.00 | 0.00 | 1.93 | 1.09 | 13.05 | |||||||||||||
1953 | 0.00 | a | 0.86 | 0.66 | 0.05 | 2.26 | 0.05 | 0.00 | 2.50 | 2.28 | 4.43 | 0.09 | 0.38 | 13.56 | ||||||||||||
1954 | 0.60 | 0.18 | 0.02 | 2.49 | 4.03 | 3.21 | 0.10 | 0.74 | 0.00 | 4.10 | 0.26 | 0.00 | 15.73 | |||||||||||||
1955 | 0.85 | 1.55 | 0.05 | 0.44 | 2.38 | 2.21 | 2.00 | 5.67 | 0.46 | 0.90 | 1.01 | 0.45 | 17.97 | |||||||||||||
1956 | 0.30 | 0.34 | 0.01 | 0.17 | 0.20 | 1.00 | 3.56 | 3.12 | 1.53 | 1.89 | 0.21 | 0.10 | 12.43 | |||||||||||||
1957 | 0.37 | 1.82 | 2.16 | 4.64 | 3.70 | 2.57 | 0.00 | 0.42 | 3.71 | 4.18 | 3.02 | 0.80 | 27.39 | |||||||||||||
1958 | 3.01 | 2.10 | 0.42 | 0.13 | 2.47 | 5.15 | 2.45 | 1.43 | 3.86 | 5.07 | 0.60 | 0.70 | 27.39 | |||||||||||||
1959 | 0.59 | 1.70 | 0.05 | 0.85 | 5.65 | 6.11 | 2.85 | 0.79 | 0.44 | 5.31 | 1.24 | 0.50 | 26.08 | |||||||||||||
1960 | 1.16 | 1.22 | 0.50 | 0.90 | 1.72 | 0.47 | 4.81 | 4.92 | 3.47 | 4.19 | 1.55 | 2.28 | 27.19 | |||||||||||||
1961 | 1.37 | 1.00 | 0.02 | 0.60 | 0.30 | 4.56 | 3.06 | 0.38 | 0.21 | 1.08 | 0.63 | 0.86 | 14.07 | |||||||||||||
1962 | 0.35 | 0.01 | 0.31 | 1.76 | 0.10 | 2.42 | 0.06 | 0.74 | 2.34 | 0.16 | 1.35 | 0.66 | 10.26 | |||||||||||||
1963 | 0.14 | 2.20 | 0.14 | 3.99 | 1.62 | 2.16 | 0.82 | 0.00 | 3.58 | 0.00 | z | 1.35 | 1.14 | 17.14 | ||||||||||||
1964 | 0.44 | 1.52 | 1.42 | 0.63 | 3.53 | 0.00 | 0.17 | 7.40 | 8.72 | 1.48 | 0.33 | 0.23 | 25.87 | |||||||||||||
1965 | 0.20 | 1.90 | 1.21 | 2.03 | 6.67 | 0.32 | 0.00 | 0.96 | 3.60 | 0.57 | 1.26 | 3.11 | 21.83 | |||||||||||||
1966 | 1.25 | 1.10 | 0.42 | 5.34 | 6.94 | 0.68 | 0.00 | 1.86 | 2.94 | 0.80 | 0.00 | 0.00 | 21.33 | |||||||||||||
1967 | 0.10 | 0.57 | 1.90 | 2.65 | 0.31 | 0.67 | 0.16 | 3.07 | 11.00 | 1.46 | 1.92 | 1.67 | 25.48 | |||||||||||||
1968 | 2.40 | 2.29 | 0.96 | 3.39 | 1.84 | 0.93 | 1.80 | 1.75 | 4.47 | 2.02 | 0.91 | 1.10 | 23.86 | |||||||||||||
1969 | 0.57 | 2.28 | 0.43 | 1.18 | 6.08 | 0.22 | 0.06 | 3.74 | 0.32 | 7.43 | 3.33 | 1.34 | 26.98 | |||||||||||||
1970 | 1.79 | 1.20 | 0.17 | 0.33 | 3.52 | 1.23 | 1.60 | 3.78 | 6.56 | 0.20 | 0.00 | 0.00 | f | 20.38 | ||||||||||||
1971 | 0.00 | 0.64 | 0.03 | 0.22 | 0.32 | 13.52 | 0.17 | 12.46 | 3.35 | c | 9.37 | 0.13 | 1.00 | 41.21 | ||||||||||||
1972 | 1.08 | 0.22 | 0.11 | 0.13 | 4.38 | 3.01 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 8.93 | |||||||
1973 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
1974 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
1975 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 4.40 | m | 0.00 | 0.29 | 0.29 | |||
1976 | 0.03 | 0.00 | 0.98 | 2.05 | 3.15 | 1.23 | 5.82 | 0.99 | 3.62 | 7.33 | 2.18 | 2.14 | 29.52 | |||||||||||||
1977 | 1.42 | 0.46 | 0.10 | 2.22 | 2.12 | 0.73 | 0.01 | 0.13 | 0.08 | 2.26 | 0.40 | 0.33 | 10.26 | |||||||||||||
1978 | 0.24 | 0.29 | 0.00 | 0.14 | 4.78 | 5.37 | 0.78 | 7.95 | 4.23 | 1.62 | 0.53 | 0.96 | 26.89 | |||||||||||||
1979 | 1.14 | 0.73 | 1.08 | 2.90 | 2.53 | 4.30 | 0.24 | 0.25 | 0.97 | 0.00 | 0.32 | 0.62 | 15.08 | |||||||||||||
1980 | 0.31 | 0.24 | 0.42 | 0.27 | 6.13 | 0.39 | 0.07 | 3.99 | 2.12 | 0.15 | 3.36 | 0.64 | 18.09 | |||||||||||||
1981 | 1.77 | 0.66 | 2.22 | 5.29 | 8.78 | 7.09 | 0.98 | 0.47 | 0.71 | 3.19 | 0.00 | 0.36 | 31.52 | |||||||||||||
1982 | 0.39 | 2.08 | 0.38 | 2.31 | 3.72 | 2.13 | 0.62 | 1.30 | 0.56 | 2.72 | f | 1.92 | 1.82 | b | 17.23 | |||||||||||
1983 | 0.83 | 1.79 | 0.42 | 0.03 | 0.94 | 1.12 | 0.64 | 0.95 | 1.67 | 1.98 | 1.17 | 0.25 | 11.79 | |||||||||||||
1984 | 1.43 | 0.05 | 0.35 | 0.00 | 1.64 | 0.57 | 0.35 | 0.08 | 1.66 | 4.86 | 0.59 | c | 1.83 | 13.41 | ||||||||||||
1985 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 2.06 | 0.19 | 0.00 | 0.64 | 3.95 | 2.16 | 0.00 | 9.00 | ||||||||
1986 | 1.28 | 0.46 | 0.16 | 0.94 | 7.54 | 2.81 | b | 0.02 | 1.05 | 2.58 | 7.33 | 1.55 | 2.77 | 28.49 | ||||||||||||
1987 | 0.46 | 2.49 | 1.11 | 2.89 | 0.00 | z | 4.34 | 1.57 | 2.07 | 0.15 | 0.00 | 0.97 | 0.80 | 16.85 | ||||||||||||
1988 | 0.12 | 0.32 | 0.26 | 0.37 | 1.06 | 2.52 | 0.56 | 1.52 | 2.61 | 1.80 | 0.00 | 0.14 | 11.28 | |||||||||||||
1989 | 1.46 | 0.60 | 0.01 | 1.56 | 0.94 | 1.57 | 0.49 | 2.74 | 0.85 | 2.98 | 0.99 | 0.66 | 14.85 | |||||||||||||
1990 | 1.30 | 5.29 | 3.21 | 3.04 | 1.65 | 0.15 | 11.61 | 2.06 | 4.43 | 0.70 | 2.03 | 0.26 | 35.73 | |||||||||||||
1991 | 2.04 | 0.79 | 0.88 | 2.74 | 3.60 | 1.33 | 0.96 | 2.12 | 4.58 | 0.20 | 0.39 | 3.34 | 22.97 | |||||||||||||
1992 | 3.71 | 2.89 | 0.25 | 3.59 | 5.47 | 2.70 | 3.00 | 0.55 | 1.16 | 0.37 | 0.43 | 1.65 | 25.77 | |||||||||||||
1993 | 1.65 | 1.05 | 0.38 | 0.33 | h | 2.30 | 4.87 | 0.00 | 0.00 | z | 0.00 | z | 0.10 | 0.00 | z | 0.00 | z | 10.35 | ||||||||
1994 | 2.65 | c | 0.15 | 4.79 | 0.67 | 2.69 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 10.95 | |||||
1995 | 0.00 | z | 0.73 | 1.56 | 0.68 | 3.14 | 2.69 | 2.93 | 0.00 | z | 1.00 | 2.08 | 1.29 | 0.39 | 16.49 | |||||||||||
1996 | 0.00 | 0.10 | 0.11 | 0.86 | 0.90 | 0.42 | 1.25 | 2.76 | 0.62 | 0.96 | 1.63 | 0.43 | 10.04 | |||||||||||||
1997 | 0.50 | 1.32 | 1.28 | 3.86 | 3.58 | 4.45 | i | 1.13 | 0.43 | 5.55 | 1.32 | 0.53 | 0.24 | 19.74 | ||||||||||||
1998 | 0.80 | 0.86 | 2.18 | 0.00 | 0.00 | 1.60 | 0.00 | 5.88 | 4.65 | 3.73 | 2.50 | 0.19 | 22.39 | |||||||||||||
1999 | 0.02 | 0.00 | 1.95 | a | 0.11 | 2.23 | 3.80 | 1.72 | 5.85 | 0.00 | 2.19 | 0.10 | 0.00 | 17.97 | ||||||||||||
2000 | 0.08 | 1.07 | 0.27 | 0.74 | 0.34 | 3.48 | 0.00 | 0.04 | 1.08 | 3.59 | 3.16 | 0.85 | a | 14.70 | ||||||||||||
2001 | 1.84 | 0.34 | 1.43 | 0.20 | 0.75 | 0.07 | 1.40 | 2.53 | 3.17 | 0.08 | 1.44 | 1.18 | 14.43 | |||||||||||||
2002 | 0.01 | 0.11 | 0.28 | 0.82 | 2.34 | 0.32 | 8.41 | 0.35 | 3.55 | 4.53 | 1.07 | 0.09 | 21.88 | |||||||||||||
2003 | 0.61 | 1.55 | 1.28 | 0.71 | 0.46 | 2.71 | 4.36 | 1.34 | 8.04 | 4.91 | 0.79 | 0.00 | 26.76 | |||||||||||||
2004 | 1.49 | 1.81 | 3.88 | 3.20 | 2.70 | 2.82 | 0.40 | 1.83 | 0.99 | 0.77 | 4.95 | 0.09 | 24.93 | |||||||||||||
2005 | 1.16 | 1.41 | 1.45 | 0.03 | 0.46 | 0.53 | 0.67 | 0.50 | 1.10 | 2.18 | 0.00 | 0.41 | 9.90 | |||||||||||||
2006 | 0.13 | 0.09 | 0.17 | 0.88 | 1.91 | a | 0.05 | 2.70 | 0.90 | a | 3.74 | 0.27 | a | 0.00 | 1.30 | 12.14 | ||||||||||
2007 | 3.38 | 0.05 | 1.96 | 0.95 | 9.85 | 4.00 | 5.84 | 0.71 | 3.68 | 0.13 | 0.31 | 0.30 | 31.16 | |||||||||||||
2008 | 0.04 | 0.00 | 0.26 | 1.75 | 2.67 | a | 0.45 | 1.88 | 2.99 | b | 0.11 | 0.82 | 0.00 | 0.39 | 11.36 | |||||||||||
2009 | 0.10 | 0.15 | 0.44 | 0.47 | 3.08 | a | 0.33 | c | 0.21 | 1.38 | 2.22 | 3.99 | 2.29 | 1.11 | 15.77 | |||||||||||
2010 | 2.23 | 3.88 | 0.71 | f | 4.40 | k | 2.89 | 1.13 | b | 3.70 | d | 1.06 | 8.46 | 0.00 | 0.00 | 0.37 | 23.72 | |||||||||
2011 | 1.33 | 0.00 | 0.34 | 0.00 | 1.79 | 0.13 | 1.55 | 0.65 | 0.96 | 3.52 | 0.39 | 2.81 | 13.47 | |||||||||||||
2012 | 0.74 | 0.67 | 3.76 | 1.20 | 6.66 | 0.74 | 0.84 | 0.48 | 4.40 | 0.05 | h | 0.00 | z | 0.00 | z | 19.49 | ||||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.99 | 1.01 | 0.95 | 1.59 | 3.17 | 2.31 | 1.61 | 2.06 | 2.83 | 2.37 | 1.06 | 1.00 | 21.16 | |||||||||||||
S.D. | 0.95 | 0.99 | 1.00 | 1.61 | 2.36 | 2.25 | 2.01 | 2.35 | 2.54 | 2.32 | 1.07 | 1.00 | 7.12 | |||||||||||||
SKEW | 1.53 | 1.55 | 1.57 | 1.21 | 0.88 | 1.85 | 2.36 | 2.25 | 1.20 | 1.12 | 1.45 | 1.91 | 0.23 | |||||||||||||
MAX | 4.74 | 5.29 | 4.79 | 7.15 | 9.85 | 13.52 | 11.61 | 12.46 | 11.00 | 9.37 | 4.95 | 5.75 | 41.21 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 9.90 | |||||||||||||
NO YRS | 82 | 85 | 84 | 83 | 84 | 84 | 84 | 82 | 82 | 80 | 81 | 81 | 70 |