YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1917 | 2.15 | p | 2.01 | 0.12 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.21 | ----- | z | 2.34 | i | |||
1918 | 1.63 | 2.46 | 6.92 | ----- | z | 0.02 | ----- | z | ----- | z | 1.06 | ----- | z | ----- | z | 0.88 | 1.11 | 14.08 | e | |||||||
1919 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1925 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1930 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1931 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1932 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1934 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | 0.14 | 0.00 | 0.26 | 0.25 | 0.97 | 1.62 | f | ||||||
1943 | 6.44 | 2.30 | 2.65 | 1.13 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.05 | 0.00 | 4.52 | 18.09 | |||||||||||||
1944 | 0.46 | 4.74 | 0.72 | 1.29 | 0.00 | 0.06 | ----- | z | ----- | z | ----- | z | 0.00 | 4.77 | 0.68 | 12.72 | c | |||||||||
1945 | 0.15 | 3.12 | 3.58 | 0.21 | 0.00 | 0.01 | 0.00 | 1.76 | 0.52 | 0.23 | 0.15 | 2.14 | 11.87 | |||||||||||||
1946 | 0.18 | 0.21 | 0.79 | 1.70 | 0.13 | 0.00 | 0.81 | 0.02 | 0.04 | 1.88 | 3.65 | 1.76 | 11.17 | |||||||||||||
1947 | 0.24 | 0.59 | 1.46 | 0.24 | 0.19 | a | 0.00 | 0.00 | 0.24 | 0.00 | 0.21 | 0.03 | 2.31 | 5.51 | ||||||||||||
1948 | 0.06 | 1.71 | 1.05 | 0.32 | 0.00 | 0.51 | 0.00 | j | 0.00 | 0.00 | 1.16 | 0.00 | 2.26 | b | 7.07 | a | ||||||||||
1949 | 3.29 | 1.18 | 0.59 | 0.00 | 0.48 | 0.00 | 0.00 | c | 0.00 | 0.00 | 0.37 | f | 1.11 | 0.83 | 7.48 | a | ||||||||||
1950 | 1.68 | 1.09 | 1.17 | 0.70 | 0.12 | 0.00 | 0.04 | 0.00 | 0.18 | 0.00 | 1.27 | 0.00 | 6.25 | |||||||||||||
1951 | 1.42 | 0.59 | 0.56 | 1.99 | 0.33 | 0.00 | 0.35 | 0.34 | 0.14 | 0.57 | 0.62 | 3.92 | e | 10.83 | ||||||||||||
1952 | 4.59 | 0.45 | 4.93 | 1.40 | 0.00 | d | 0.00 | 0.14 | 0.00 | 1.03 | 0.00 | 2.56 | f | 2.20 | b | 14.74 | a | |||||||||
1953 | 0.87 | 0.66 | 1.00 | 0.90 | 0.05 | 0.00 | 0.00 | a | 0.23 | g | 0.00 | 0.60 | 0.91 | 0.14 | 5.13 | a | ||||||||||
1954 | 3.25 | 1.19 | 3.58 | 0.12 | 0.00 | 0.00 | 0.16 | 0.00 | 0.00 | 0.00 | 1.66 | 1.02 | 10.98 | |||||||||||||
1955 | 4.15 | 1.62 | a | 0.15 | 0.30 | 0.82 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.63 | 0.39 | 8.06 | ||||||||||||
1956 | 2.98 | 0.32 | 0.00 | 1.64 | 0.17 | 0.00 | 0.00 | 0.00 | 0.00 | 0.02 | 0.00 | 0.00 | 5.13 | |||||||||||||
1957 | 4.62 | 0.10 | 2.14 | 1.18 | 1.35 | 0.04 | 0.00 | 0.00 | 0.00 | 2.82 | 0.90 | 1.50 | 14.65 | |||||||||||||
1958 | 0.98 | 3.84 | 5.05 | a | 3.96 | 0.05 | 0.00 | 0.22 | 0.18 | 1.69 | 0.00 | 0.15 | 0.00 | 16.12 | ||||||||||||
1959 | 0.98 | 3.94 | 0.00 | 0.15 | 0.00 | 0.00 | 0.00 | 0.00 | 0.10 | 0.25 | 1.05 | 2.37 | 8.84 | |||||||||||||
1960 | 2.16 | 1.65 | 0.37 | 0.59 | 0.02 | 0.00 | 0.00 | 0.00 | 0.28 | 0.47 | 1.55 | 0.03 | 7.12 | |||||||||||||
1961 | 0.70 | 0.23 | 0.61 | 0.03 | 0.00 | 0.00 | 0.00 | 1.18 | 0.00 | 0.11 | 0.71 | 1.55 | a | 5.12 | ||||||||||||
1962 | 1.86 | a | 3.76 | 1.42 | 0.00 | 0.68 | 0.02 | 0.00 | 0.00 | 0.00 | 0.11 | 0.00 | 0.12 | 7.97 | ||||||||||||
1963 | 0.15 | 3.07 | 1.63 | 1.57 | 0.00 | 0.05 | 0.00 | 0.10 | 3.44 | 0.84 | 2.00 | 0.00 | 12.85 | |||||||||||||
1964 | 1.44 | 0.40 | 1.83 | 1.73 | ----- | z | 0.00 | 0.00 | 0.00 | 0.03 | 0.02 | 1.61 | 0.72 | 7.78 | a | |||||||||||
1965 | 0.46 | 0.40 | 1.70 | 4.14 | 0.11 | 0.01 | 0.37 | 0.30 | 0.49 | 0.00 | 6.09 | 3.30 | 17.37 | |||||||||||||
1966 | 0.63 | 1.15 | 0.49 | 0.14 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.55 | 0.79 | 5.61 | 9.36 | |||||||||||||
1967 | 2.20 | 0.00 | 0.95 | 3.09 | 0.14 | 0.06 | 0.15 | 0.93 | 2.35 | 0.00 | 1.65 | 2.40 | 13.92 | |||||||||||||
1968 | 0.63 | 0.39 | 0.91 | 0.89 | 0.11 | 0.00 | 0.65 | 0.00 | 0.00 | 0.23 | ----- | z | 1.00 | 4.81 | a | |||||||||||
1969 | 6.15 | 6.61 | 0.83 | 0.30 | 0.52 | 0.00 | 0.00 | 0.00 | 0.12 | 0.00 | 0.91 | 0.05 | 15.49 | |||||||||||||
1970 | 1.07 | 1.08 | 4.80 | 0.30 | 0.00 | 0.00 | 0.00 | 0.34 | 0.00 | 0.05 | 2.10 | a | 2.73 | 12.47 | ||||||||||||
1971 | 0.73 | 0.26 | 0.13 | 0.35 | 0.86 | 0.04 | 0.00 | 0.00 | 0.00 | 1.20 | a | 0.04 | 4.10 | 7.71 | ||||||||||||
1972 | 0.00 | 0.45 | 0.00 | 0.12 | 0.08 | 1.09 | 0.00 | 0.28 | 0.12 | 0.60 | 2.00 | 1.14 | 5.88 | |||||||||||||
1973 | 1.99 | 3.75 | 3.86 | 0.05 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.04 | 1.63 | 0.15 | 11.47 | |||||||||||||
1974 | 5.18 | 0.05 | 1.91 | 0.22 | 0.00 | 0.00 | 1.05 | 0.00 | 0.00 | 0.76 | 0.00 | 1.51 | 10.68 | |||||||||||||
1975 | 0.14 | 1.38 | 3.40 | 2.30 | 0.11 | 0.00 | 0.00 | 0.00 | 0.00 | 0.10 | 1.19 | 0.41 | 9.03 | |||||||||||||
1976 | 0.00 | 3.98 | 1.32 | 1.36 | 0.55 | 0.14 | 0.14 | 0.00 | 4.65 | 1.77 | 0.65 | 0.77 | 15.33 | |||||||||||||
1977 | 1.96 | 0.61 | 1.38 | 0.14 | 2.97 | 0.19 | 0.00 | 2.08 | 0.00 | 0.00 | 0.00 | 3.15 | a | 12.48 | ||||||||||||
1978 | 7.93 | 4.32 | 6.53 | 1.38 | 0.02 | 0.00 | 0.00 | 0.01 | 0.68 | 0.19 | 2.82 | 2.72 | 26.60 | |||||||||||||
1979 | 5.43 | 2.81 | 3.44 | 0.00 | 0.06 | ----- | z | 0.29 | 0.03 | 0.00 | 0.78 | 0.30 | 0.33 | 13.47 | a | |||||||||||
1980 | 6.37 | 8.25 | 2.99 | 0.80 | 0.10 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.35 | 18.86 | |||||||||||||
1981 | 2.03 | 2.03 | 2.59 | 0.43 | 0.02 | 0.00 | 0.00 | 0.00 | 0.09 | 0.05 | 0.71 | 0.34 | 8.29 | |||||||||||||
1982 | 4.01 | 1.13 | 4.43 | 1.11 | 0.09 | 0.00 | 0.00 | 1.15 | 1.20 | 0.27 | 2.29 | 1.22 | 16.90 | |||||||||||||
1983 | 2.54 | 3.17 | 5.73 | 2.63 | 0.83 | 0.00 | 0.00 | 1.24 | 0.29 | 0.58 | 1.68 | 2.34 | 21.03 | |||||||||||||
1984 | 0.04 | 0.00 | 0.00 | 0.57 | 0.00 | 0.06 | 1.48 | 0.08 | 1.58 | 0.23 | 0.62 | 4.12 | 8.78 | |||||||||||||
1985 | 0.89 | 1.40 | 0.54 | 0.00 | 0.00 | 0.00 | 0.42 | 0.00 | 0.90 | 0.12 | 3.00 | 0.54 | 7.81 | |||||||||||||
1986 | 1.03 | 2.68 | 3.98 | 0.36 | 0.00 | 0.00 | 0.24 | 0.00 | 0.26 | 0.40 | 0.92 | 0.74 | 10.61 | |||||||||||||
1987 | 1.57 | 1.63 | 1.44 | 0.05 | 0.03 | 0.00 | 0.01 | 0.03 | 0.05 | 2.59 | 1.69 | 1.67 | 10.76 | |||||||||||||
1988 | 1.70 | 0.84 | 0.31 | 2.45 | 0.05 | 0.00 | 0.03 | 1.04 | 0.00 | 0.00 | 0.73 | 1.53 | 8.68 | |||||||||||||
1989 | 1.09 | 0.70 | 1.07 | 0.00 | 0.19 | 0.00 | 0.00 | 0.00 | 0.51 | 0.33 | 0.04 | 0.19 | 4.12 | |||||||||||||
1990 | 3.31 | 1.33 | 0.35 | 1.42 | 0.78 | 0.60 | 0.34 | 0.72 | 0.00 | 0.00 | 0.49 | 0.08 | 9.42 | |||||||||||||
1991 | 1.10 | 2.45 | 8.35 | 0.00 | 0.00 | 0.00 | 0.14 | 0.00 | 0.43 | 0.35 | 0.03 | 1.82 | 14.67 | |||||||||||||
1992 | 2.28 | 4.37 | 2.86 | 0.11 | 1.93 | 0.00 | 0.14 | ----- | z | 0.00 | 0.71 | 0.00 | 2.90 | 15.30 | a | |||||||||||
1993 | 13.40 | 5.45 | 1.28 | 0.00 | 0.12 | 0.71 | 0.00 | 0.00 | 0.00 | 0.38 | 0.62 | 0.33 | 22.29 | |||||||||||||
1994 | 1.02 | 3.70 | 1.80 | 0.92 | 0.10 | 0.00 | 0.00 | 0.40 | 0.00 | 0.52 | 0.63 | 0.80 | 9.89 | |||||||||||||
1995 | 7.44 | 1.68 | 4.64 | 1.03 | 0.80 | 0.23 | 0.14 | 0.00 | 0.77 | 0.00 | 0.00 | 0.18 | 16.91 | |||||||||||||
1996 | 1.21 | 4.24 | 1.17 | 0.30 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.00 | ----- | z | 1.54 | 9.46 | a | |||||||||||
1997 | 3.46 | 0.28 | 0.00 | 0.08 | 0.00 | 0.00 | 0.00 | 0.00 | 3.03 | 0.02 | 1.21 | 1.62 | 9.70 | |||||||||||||
1998 | 2.49 | 10.24 | 1.36 | 1.37 | 4.29 | 0.04 | 0.00 | 2.19 | 0.14 | 0.30 | 0.73 | 0.48 | 23.63 | |||||||||||||
1999 | 0.94 | 0.88 | 0.07 | 2.41 | 0.00 | 0.23 | 0.80 | 0.00 | 0.22 | 0.00 | 0.01 | 0.00 | 5.56 | |||||||||||||
2000 | 0.62 | 3.57 | 1.59 | 0.60 | 0.09 | 0.00 | 0.00 | 0.13 | 0.32 | 1.10 | 0.12 | 0.00 | 8.14 | |||||||||||||
2001 | 2.02 | 3.25 | 0.87 | 0.64 | 0.08 | 0.00 | 0.11 | 0.00 | 0.00 | 0.00 | 0.68 | 0.87 | 8.52 | |||||||||||||
2002 | 0.50 | 0.01 | 0.42 | 0.38 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.24 | 3.33 | 4.88 | |||||||||||||
2003 | 0.05 | 3.64 | 3.40 | 2.14 | 0.27 | 0.00 | 0.21 | 0.00 | 0.00 | 0.00 | 2.51 | 0.63 | 12.85 | |||||||||||||
2004 | 0.11 | 3.25 | 0.00 | 0.44 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 5.56 | 1.51 | 2.46 | 13.33 | |||||||||||||
2005 | 6.81 | 6.25 | 0.84 | 1.15 | 0.29 | 0.00 | 1.50 | 0.00 | 0.47 | 1.25 | 0.00 | 0.00 | 18.56 | |||||||||||||
2006 | 1.13 | 2.02 | 2.90 | 1.81 | 0.22 | 0.00 | 0.36 | 0.00 | 0.76 | 0.00 | 0.07 | 0.44 | 9.71 | |||||||||||||
2007 | 0.16 | 1.38 | 0.27 | 0.48 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 2.61 | 0.51 | 5.41 | |||||||||||||
2008 | 4.50 | 1.72 | 0.38 | 0.00 | 0.64 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.04 | 2.97 | h | 7.28 | a | |||||||||||
2009 | 0.65 | 1.30 | 0.12 | 0.08 | 0.00 | 0.02 | 0.00 | 0.00 | 0.00 | 0.08 | 0.46 | 3.24 | 5.95 | |||||||||||||
2010 | 6.08 | 2.85 | 0.16 | 0.86 | 0.00 | 0.00 | 0.06 | 0.04 | 0.17 | 1.29 | 0.49 | 7.13 | 19.13 | |||||||||||||
2011 | 0.39 | 0.20 | g | 1.43 | 0.12 | 0.25 | 0.07 | 0.42 | 0.00 | 0.00 | 0.30 | 2.13 | 0.53 | 5.64 | a | |||||||||||
2012 | 0.12 | m | 1.51 | 1.37 | 1.47 | 0.01 | 0.00 | 0.10 | 0.56 | 0.85 | 0.13 | 0.21 | 1.88 | 8.09 | a | |||||||||||
2013 | 0.93 | 0.78 | 0.94 | d | 0.00 | 0.26 | 0.00 | 0.02 | 0.20 | 0.44 | 0.60 | 0.75 | 0.43 | 5.35 | ||||||||||||
2014 | 0.01 | 1.90 | 1.65 | 0.62 | 0.00 | 0.00 | 0.00 | 0.96 | 2.20 | 0.00 | 0.39 | 5.12 | 12.85 | |||||||||||||
2015 | 0.35 | 0.94 | 0.76 | 0.26 | 1.56 | 0.19 | 1.42 | 0.00 | 0.60 | 0.58 | 0.27 | 0.92 | 7.85 | |||||||||||||
2016 | 2.94 | 0.23 | 0.41 | 0.31 | 0.44 | 0.00 | 0.00 | 0.00 | 0.41 | 0.26 | 1.18 | 3.06 | 9.24 | |||||||||||||
2017 | 5.48 | 3.13 | 0.10 | 0.00 | 0.15 | 0.00 | 0.02 | 0.31 | 0.00 | 0.00 | 0.07 | 0.00 | 9.26 | |||||||||||||
2018 | 2.35 | 0.58 | 2.48 | 0.02 | 0.27 | 0.00 | 0.15 | 0.00 | 0.00 | 0.95 | 0.59 | 2.09 | 9.48 | |||||||||||||
2019 | 2.57 | 8.87 | 2.26 | 0.19 | 1.41 | 0.00 | 0.00 | 0.00 | 0.16 | 0.00 | 3.12 | 3.09 | 21.67 | |||||||||||||
2020 | 0.28 | 0.70 | 4.64 | 4.27 | 0.00 | 0.00 | 0.00 | 0.80 | 0.00 | 0.00 | 0.73 | 1.63 | 13.05 | |||||||||||||
2021 | 2.73 | 0.22 | 1.90 | 0.32 | 0.04 | 0.03 | 0.37 | 0.00 | 0.07 | 1.04 | 0.00 | 2.85 | 9.57 | |||||||||||||
2022 | 0.13 | 0.80 | 0.77 | 0.37 | 0.00 | 0.08 | 0.00 | 0.00 | 0.20 | 1.18 | 1.15 | 1.21 | 5.89 | |||||||||||||
2023 | 6.94 | 2.27 | 7.69 | 0.07 | 0.35 | 0.05 | 0.05 | 1.57 | 0.11 | 0.05 | 1.40 | 0.87 | 21.42 | |||||||||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 2.28 | 2.15 | 1.88 | 0.85 | 0.32 | 0.06 | 0.16 | 0.26 | 0.40 | 0.48 | 0.99 | 1.52 | 11.59 | |||||||||||||
S.D. | 2.43 | 2.06 | 1.90 | 0.98 | 0.66 | 0.17 | 0.33 | 0.50 | 0.82 | 0.81 | 1.12 | 1.47 | 5.19 | |||||||||||||
SKEW | 1.80 | 1.68 | 1.43 | 1.67 | 3.85 | 4.24 | 2.79 | 2.25 | 3.17 | 3.70 | 2.00 | 1.32 | 0.85 | |||||||||||||
MAX | 13.40 | 10.24 | 8.35 | 4.27 | 4.29 | 1.09 | 1.50 | 2.19 | 4.65 | 5.56 | 6.09 | 7.13 | 26.60 | |||||||||||||
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 | 4.12 | |||||||||||||
YRS | 81 | 82 | 83 | 81 | 81 | 80 | 80 | 80 | 81 | 81 | 81 | 82 | 68 |