YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | 0.34 | 0.34 | j | ||
1928 | 0.00 | 1.05 | 0.13 | 0.27 | 3.28 | 2.68 | 3.97 | 3.00 | 3.11 | 2.09 | 1.82 | 0.11 | 21.51 | |||||||||||||
1929 | 0.43 | 0.53 | 1.62 | 0.16 | 4.01 | 1.24 | 1.01 | 2.22 | 1.72 | 1.71 | 1.01 | 0.10 | 15.76 | |||||||||||||
1930 | 0.40 | 0.00 | 0.72 | 1.63 | 0.63 | 1.21 | 2.77 | 1.06 | 0.78 | 1.46 | 0.58 | 0.32 | 11.56 | |||||||||||||
1931 | 0.55 | 0.28 | 0.66 | 2.28 | 3.01 | 0.24 | 3.02 | 1.92 | 1.96 | 0.35 | 1.62 | 1.01 | 16.90 | |||||||||||||
1932 | 1.17 | 0.76 | 0.18 | 1.11 | 0.61 | 4.01 | 1.10 | 6.30 | 2.42 | 0.37 | 0.00 | 1.38 | 19.41 | |||||||||||||
1933 | 0.01 | 0.34 | 0.27 | 0.11 | 2.83 | 0.17 | 1.32 | 6.03 | 0.35 | 0.27 | a | 0.49 | 0.00 | 12.19 | ||||||||||||
1934 | 0.00 | 0.02 | 1.26 | 0.35 | 1.74 | 0.76 | 2.63 | 0.38 | 0.62 | 0.57 | 1.14 | 0.18 | 9.65 | |||||||||||||
1935 | 0.33 | 0.21 | 0.53 | 0.00 | 2.46 | 1.60 | 0.64 | 1.89 | 0.12 | 0.04 | 0.91 | 0.18 | 8.91 | |||||||||||||
1936 | 1.24 | 0.22 | 0.00 | 0.04 | 3.47 | 0.95 | 1.15 | 0.27 | 2.91 | 0.47 | 0.00 | 0.21 | 10.93 | |||||||||||||
1937 | 0.19 | 0.15 | 1.22 | 0.16 | 5.72 | 2.09 | 2.14 | 0.54 | 3.34 | 0.31 | 0.00 | 0.44 | 16.30 | |||||||||||||
1938 | 0.25 | 1.15 | 0.79 | 0.45 | 2.11 | 2.46 | 1.31 | 0.42 | 1.84 | 5.50 | 0.33 | 0.07 | 16.68 | |||||||||||||
1939 | 1.91 | 0.19 | a | 0.56 | 1.23 | 1.74 | 1.74 | 0.46 | 1.39 | 0.70 | 1.56 | 0.10 | 1.31 | 12.89 | ||||||||||||
1940 | 0.49 | 0.67 | 0.17 | 0.88 | 2.06 | 0.81 | 1.23 | 1.95 | 0.51 | 0.29 | 2.71 | 0.08 | 11.85 | |||||||||||||
1941 | 0.14 | 0.09 | 2.73 | 1.96 | 9.54 | 4.74 | 2.52 | 2.37 | 5.84 | 9.66 | 0.16 | 0.82 | 40.57 | |||||||||||||
1942 | 0.16 | 0.18 | 0.80 | 3.89 | 0.51 | 3.11 | 2.63 | 6.38 | 1.84 | 4.04 | 0.00 | 1.21 | 24.75 | |||||||||||||
1943 | 0.06 | 0.00 | 0.01 | 3.20 | 1.08 | 1.86 | 2.40 | 0.31 | 1.60 | 0.03 | 0.74 | 3.36 | 14.65 | |||||||||||||
1944 | 0.21 | 0.74 | 0.00 | 1.43 | 4.10 | ----- | z | ----- | z | ----- | z | ----- | z | 1.67 | a | 0.01 | 0.30 | 8.46 | d | |||||||
1945 | 0.65 | 0.42 | 0.00 | ----- | z | 0.00 | ----- | z | 0.89 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.96 | g | |||||
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | 3.07 | j | 1.31 | k | 2.24 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1951 | ----- | z | ----- | z | 0.21 | 0.55 | 7.24 | 2.47 | 4.22 | 1.60 | 1.16 | 1.70 | 0.21 | 0.60 | 19.96 | b | ||||||||||
1952 | 0.40 | 0.15 | 0.32 | 4.01 | 0.31 | 3.06 | 3.15 | 0.61 | 1.00 | 0.00 | 1.15 | 0.60 | 14.76 | |||||||||||||
1953 | 0.50 | 0.00 | a | 0.00 | c | 2.12 | 2.02 | 0.00 | 3.24 | 1.22 | 0.00 | 3.15 | 0.63 | 0.00 | 12.88 | |||||||||||
1954 | 0.10 | 0.00 | 0.32 | 0.54 | 2.36 | 0.94 | 0.07 | 4.06 | 0.00 | 1.37 | 0.00 | 0.24 | 10.00 | |||||||||||||
1955 | 0.00 | 0.00 | 0.00 | 0.64 | 2.52 | 0.94 | 2.93 | 0.40 | 3.17 | 0.08 | ----- | z | ----- | z | 10.68 | b | ||||||||||
1956 | ----- | z | ----- | z | ----- | z | 0.00 | 2.16 | 3.77 | 0.29 | 1.55 | 0.75 | ----- | z | ----- | z | ----- | z | 8.52 | f | ||||||
1957 | 0.05 | 0.71 | 1.88 | c | 1.01 | 3.19 | 1.61 | 0.64 | 1.38 | 1.10 | 2.31 | 0.39 | b | 0.00 | 14.27 | |||||||||||
1958 | 1.45 | 0.39 | 2.11 | 1.78 | 0.81 | 0.64 | 3.40 | 1.16 | 3.38 | 0.74 | ----- | z | ----- | z | 15.86 | b | ||||||||||
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 3.44 | 3.94 | 0.64 | 1.99 | 0.12 | 3.17 | 13.30 | f | ||||||
1960 | 1.58 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 10.16 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 11.74 | j | ||
1961 | 0.66 | b | ----- | z | ----- | z | 0.09 | 0.53 | 3.32 | 3.58 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 8.18 | g | ||||
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.30 | v | 4.40 | 0.64 | 4.06 | 0.93 | 0.42 | 0.47 | 10.92 | f | ||||||
1963 | 0.02 | 0.56 | 0.00 | 0.15 | 3.97 | 7.07 | 3.16 | 2.28 | 0.44 | 0.24 | 0.81 | 0.10 | 18.80 | |||||||||||||
1964 | 0.03 | 0.28 | 0.12 | 0.00 | 1.07 | 3.80 | 0.12 | 0.85 | 3.06 | 0.20 | 1.06 | 0.25 | 10.84 | |||||||||||||
1965 | 0.36 | 0.50 | 0.69 | 0.58 | 2.31 | 5.47 | 3.65 | 1.32 | 1.18 | 0.64 | 0.00 | 0.63 | 17.33 | |||||||||||||
1966 | 0.34 | 0.37 | 0.00 | 0.39 | 0.64 | 4.22 | 1.56 | 6.83 | 2.30 | 0.03 | 0.45 | 0.06 | 17.19 | |||||||||||||
1967 | 0.00 | 0.36 | 0.15 | 0.56 | 0.21 | 3.43 | 3.17 | 1.79 | 0.80 | 0.27 | 0.11 | 0.32 | 11.17 | |||||||||||||
1968 | 1.37 | 0.15 | 0.52 | 0.50 | 1.25 | 0.26 | 1.38 | 1.33 | 1.59 | 0.50 | 0.42 | 0.11 | 9.38 | |||||||||||||
1969 | 0.05 | 0.77 | 0.81 | 1.24 | 4.71 | 3.59 | 2.32 | 1.33 | 2.47 | 3.82 | 0.65 | 0.83 | 22.59 | |||||||||||||
1970 | 0.85 | 0.20 | 1.10 | 0.85 | 0.07 | 3.01 | 1.43 | 3.48 | 1.74 | 0.90 | 0.06 | 0.02 | 13.71 | |||||||||||||
1971 | 0.02 | 0.95 | 0.04 | 1.22 | 0.57 | 2.18 | 2.06 | 4.64 | 2.24 | 1.57 | 2.14 | 0.71 | 18.34 | |||||||||||||
1972 | 0.06 | 0.00 | 0.09 | 0.00 | 2.36 | 3.75 | 2.14 | 2.02 | 1.87 | 1.96 | 1.19 | 0.29 | 15.73 | |||||||||||||
1973 | 0.79 | 0.69 | 2.22 | 2.73 | 0.86 | 2.31 | 3.80 | 0.58 | 1.46 | 0.96 | 0.01 | 0.13 | 16.54 | |||||||||||||
1974 | 0.54 | 0.17 | 0.38 | 0.11 | 0.09 | 1.55 | 1.20 | 6.54 | 2.08 | 3.87 | 0.25 | 0.59 | 17.37 | |||||||||||||
1975 | 0.20 | 0.97 | 0.50 | 1.95 | 1.53 | 1.92 | 3.87 | 1.56 | 1.59 | 0.16 | 0.58 | 0.11 | 14.94 | |||||||||||||
1976 | 0.01 | 0.12 | 0.44 | 1.18 | 0.95 | 1.75 | 1.04 | 2.31 | 2.37 | 0.84 | 0.44 | 0.00 | 11.45 | |||||||||||||
1977 | 0.21 | 0.33 | 0.72 | 1.18 | 3.81 | 1.39 | 0.31 | 2.90 | 0.36 | 0.72 | 0.11 | 0.08 | 12.12 | |||||||||||||
1978 | 0.57 | 0.81 | 0.45 | 0.37 | 2.51 | 2.77 | 1.14 | 3.29 | 4.67 | 0.26 | 2.15 | 0.31 | 19.30 | |||||||||||||
1979 | 0.70 | 0.12 | 1.28 | 1.85 | 1.35 | 3.74 | 1.61 | 1.94 | 1.17 | 1.23 | 0.40 | 0.36 | 15.75 | |||||||||||||
1980 | 0.44 | 0.68 | 0.25 | 0.96 | 4.17 | 0.11 | 0.30 | 0.90 | 3.27 | 0.54 | 0.56 | 0.07 | 12.25 | |||||||||||||
1981 | 0.28 | 0.28 | 1.34 | 1.09 | 1.65 | 2.74 | 2.28 | 5.82 | 2.73 | 2.55 | 0.82 | 0.00 | 21.58 | |||||||||||||
1982 | 0.00 | 0.39 | a | 0.29 | 0.26 | 2.78 | 2.37 | 4.80 | 1.37 | 0.71 | 0.75 | 1.15 | 1.35 | 16.22 | ||||||||||||
1983 | 1.20 | 1.38 | 0.71 | 1.13 | a | 1.63 | 2.20 | 1.33 | 0.96 | 0.82 | 2.90 | 0.16 | 0.76 | 15.18 | ||||||||||||
1984 | 0.40 | a | 0.45 | 1.72 | 0.73 | b | 0.83 | a | 2.87 | 2.36 | 6.41 | 0.64 | 3.42 | 1.08 | 1.55 | b | 22.46 | |||||||||
1985 | 1.28 | 0.30 | 2.87 | b | 1.37 | 3.19 | 2.53 | 2.55 | 1.89 | 4.36 | 3.92 | 0.30 | 0.19 | 24.75 | ||||||||||||
1986 | 0.00 | 2.32 | 0.05 | 0.61 | 2.49 | 2.94 | 2.32 | 2.74 | 4.18 | 3.38 | 2.27 | 1.32 | 24.62 | |||||||||||||
1987 | 1.45 | 1.49 | 0.50 | 0.33 | 5.25 | 2.02 | 0.22 | 5.10 | 3.60 | 1.14 | 0.29 | 2.14 | 23.53 | |||||||||||||
1988 | 0.11 | 0.20 | 0.42 | 1.72 | 4.74 | 4.59 | 2.24 | 1.41 | 3.81 | 0.06 | 0.21 | 0.61 | 20.12 | |||||||||||||
1989 | 0.17 | 0.80 | 0.23 | 0.13 | 1.48 | 3.39 | 0.99 | 4.18 | 1.80 | 0.12 | 0.00 | 0.72 | 14.01 | |||||||||||||
1990 | 1.29 | 1.40 | 0.50 | 0.72 | 0.40 | 0.06 | 2.64 | 2.29 | 2.29 | 0.37 | 0.77 | 0.24 | 12.97 | |||||||||||||
1991 | 1.07 | 0.01 | 0.63 | 0.00 | 1.48 | 4.79 | 4.26 | 3.47 | 2.46 | 1.73 | 1.76 | 3.12 | 24.78 | |||||||||||||
1992 | 0.98 | 0.34 | 1.97 | 0.62 | 5.63 | 4.70 | 1.41 | 3.79 | 1.48 | 0.01 | 1.61 | 0.95 | 23.49 | |||||||||||||
1993 | 1.00 | 0.28 | 0.48 | 0.67 | 1.72 | 1.39 | 3.83 | 4.66 | 2.76 | 1.51 | 1.02 | 0.36 | 19.68 | |||||||||||||
1994 | 0.26 | 0.03 | 1.80 | 1.16 | 3.73 | 2.56 | 2.82 | 3.59 | 0.72 | 0.46 | 0.48 | 0.35 | 17.96 | |||||||||||||
1995 | 0.32 | 0.05 | 0.49 | 0.91 | 4.32 | 2.20 | b | 1.20 | 0.97 | 3.26 | 0.97 | 0.00 | 0.89 | 15.58 | ||||||||||||
1996 | 0.05 | 0.31 | a | 0.00 | 0.00 | 0.14 | 1.76 | 4.70 | 3.48 | 3.49 | 0.90 | 0.77 | 0.13 | 15.73 | ||||||||||||
1997 | 0.94 | 0.66 | 0.00 | 6.16 | a | 2.58 | 2.57 | 2.71 | 3.23 | 3.84 | 1.24 | 0.59 | 2.88 | b | 27.40 | |||||||||||
1998 | 0.01 | 0.56 | 2.26 | 1.10 | 0.00 | 0.12 | 0.57 | 2.12 | 0.41 | 6.57 | 1.58 | 0.21 | a | 15.51 | ||||||||||||
1999 | 2.43 | 0.00 | 2.28 | 1.68 | 2.34 | 5.04 | 3.54 | 2.43 | 3.84 | b | 0.48 | 0.00 | 2.08 | 26.14 | ||||||||||||
2000 | 0.00 | 0.00 | 2.52 | 0.64 | 1.19 | 2.65 | 2.94 | 0.00 | 0.02 | 3.51 | 1.26 | 1.17 | 15.90 | |||||||||||||
2001 | 1.66 | 0.83 | 2.55 | 0.04 | 5.95 | 0.80 | 1.75 | 2.40 | 0.12 | 0.42 | 2.60 | 0.58 | 19.70 | |||||||||||||
2002 | 1.22 | 0.17 | 1.29 | 0.64 | 0.47 | 0.79 | 0.98 | 2.62 | 1.19 | 3.37 | 0.70 | 1.32 | 14.76 | |||||||||||||
2003 | 0.00 | 0.03 | 1.94 | a | 0.18 | 1.92 | 4.77 | 0.02 | 2.42 | q | 0.73 | 0.79 | 0.21 | 0.04 | 10.63 | a | ||||||||||
2004 | 0.65 | 2.34 | 2.05 | 4.81 | 0.40 | 4.81 | 4.18 | 3.58 | 4.80 | 4.46 | 4.08 | 0.40 | 36.56 | |||||||||||||
2005 | 2.77 | 0.56 | 1.44 | 1.33 | 1.83 | 0.25 | 1.81 | 5.90 | 0.42 | 0.67 | 0.03 | 0.05 | 17.06 | |||||||||||||
2006 | 0.05 | 0.08 | 1.11 | 0.13 | 0.57 | 2.34 | 1.35 | 6.09 | 3.56 | 1.82 | 0.40 | 1.91 | 19.41 | |||||||||||||
2007 | 1.03 | 0.51 | 3.72 | 0.33 | 2.62 | 2.28 | 3.10 | 1.76 | 3.92 | 0.00 | 0.09 | 1.09 | 20.45 | |||||||||||||
2008 | 0.05 | 0.20 | 0.33 | 0.39 | 1.68 | 5.76 | 2.39 | 7.29 | 2.31 | 3.76 | 0.03 | 0.09 | 24.28 | |||||||||||||
2009 | 0.00 | 0.31 | 0.74 | 0.60 | 0.79 | 2.27 | 4.68 | 3.65 | 1.74 | a | 2.20 | 0.10 | 0.51 | 17.59 | ||||||||||||
2010 | 1.42 | 1.94 | 0.97 | 0.87 | 2.12 | 2.17 | 4.30 | 4.40 | 0.60 | 0.81 | 0.46 | 0.09 | 20.15 | |||||||||||||
2011 | 0.00 | 0.70 | 0.26 | 0.03 | 0.07 | 0.71 | 0.08 | 0.42 | 2.16 | 1.12 | 0.17 | 1.62 | 7.34 | |||||||||||||
2012 | 0.18 | 0.32 | 0.46 | 0.16 | 2.22 | 1.88 | 0.46 | 1.19 | 1.44 | a | 0.54 | 0.04 | 0.67 | 9.56 | ||||||||||||
2013 | 0.49 | 1.03 | 0.12 | 0.05 | 1.35 | 2.66 | 4.04 | 1.14 | 1.14 | 0.04 | 0.80 | 0.45 | 13.31 | |||||||||||||
2014 | 0.00 | 0.27 | 0.18 | 0.34 | 3.52 | 2.31 | 4.32 | 1.36 | 3.47 | 0.29 | 0.08 | 0.12 | 16.26 | |||||||||||||
2015 | 2.06 | 0.80 | 0.56 | 0.86 | 7.43 | 4.05 | 4.30 | 2.74 | 2.85 | 7.15 | 0.89 | 2.14 | 35.83 | |||||||||||||
2016 | 0.09 | 0.17 | 0.08 | 1.19 | 2.01 | 2.73 | 1.34 | 3.50 | 3.58 | 0.00 | 1.05 | 0.26 | 16.00 | |||||||||||||
2017 | 1.63 | 0.76 | 1.61 | 2.36 | 1.54 | 1.97 | 3.48 | 11.70 | 3.05 | 3.27 | 0.00 | 0.00 | 31.37 | |||||||||||||
2018 | 0.00 | 0.12 | 0.18 | 0.70 | 1.24 | 1.18 | 4.30 | 2.87 | 1.63 | 4.83 | 0.54 | 0.39 | 17.98 | |||||||||||||
2019 | 0.13 | 0.42 | 1.85 | 1.63 | 3.15 | 2.81 | 1.38 | 0.82 | 2.35 | 5.53 | 1.03 | 0.84 | 21.94 | |||||||||||||
2020 | 0.57 | 0.67 | 1.63 | 0.53 | 0.14 | 0.72 | 3.10 | 0.62 | 0.30 | 1.05 | 0.23 | 0.03 | 9.59 | |||||||||||||
2021 | 0.33 | 0.35 | 0.72 | 0.17 | 1.63 | 5.11 | 3.86 | 1.69 | 1.19 | 0.73 | 0.00 | 0.00 | 15.78 | |||||||||||||
2022 | 0.16 | 0.15 | 0.38 | 0.00 | 1.56 | 0.00 | 3.25 | 1.99 | 0.53 | 1.80 | 0.38 | 0.25 | 10.45 | |||||||||||||
2023 | 0.55 | 0.31 | 0.05 | 0.14 | 7.23 | 3.79 | 2.22 | 0.82 | 1.67 | 0.55 | 0.19 | 0.90 | 18.42 | |||||||||||||
2024 | 0.86 | 0.57 | 0.27 | 1.53 | e | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 3.23 | h | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.55 | 0.48 | 0.83 | 0.97 | 2.29 | 2.42 | 2.39 | 2.64 | 1.97 | 1.64 | 0.65 | 0.65 | 17.53 | |||||||||||||
S.D. | 0.62 | 0.48 | 0.83 | 1.09 | 1.89 | 1.52 | 1.57 | 2.07 | 1.33 | 1.83 | 0.74 | 0.77 | 6.28 | |||||||||||||
SKEW | 1.36 | 1.87 | 1.19 | 2.29 | 1.38 | 0.49 | 1.28 | 1.49 | 0.51 | 1.86 | 1.92 | 1.82 | 1.30 | |||||||||||||
MAX | 2.77 | 2.34 | 3.72 | 6.16 | 9.54 | 7.07 | 10.16 | 11.70 | 5.84 | 9.66 | 4.08 | 3.36 | 40.57 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.02 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 7.34 | |||||||||||||
YRS | 88 | 86 | 87 | 88 | 88 | 86 | 90 | 86 | 87 | 87 | 86 | 86 | 80 |