YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1935 | ----- | z | 0.00 | 0.39 | 0.00 | 4.22 | 1.05 | 1.93 | 4.83 | 2.38 | 0.35 | 1.40 | 0.07 | 16.62 | a | |||||||||||
1936 | 1.36 | 0.14 | 0.00 | 0.08 | 2.48 | 0.80 | 1.13 | 2.78 | 5.80 | 0.29 | 0.00 | 0.47 | 15.33 | |||||||||||||
1937 | 0.06 | 0.37 | a | 1.05 | 0.58 | 9.35 | 2.87 | 1.17 | 0.69 | 3.78 | 0.59 | 0.07 | 0.73 | 21.31 | ||||||||||||
1938 | 0.89 | 1.71 | 0.32 | 0.46 | 1.01 | 2.17 | 5.44 | 1.20 | 3.39 | 1.98 | 0.28 | 0.35 | 19.20 | |||||||||||||
1939 | 1.27 | 1.02 | 0.81 | 1.31 | 1.63 | 1.33 | 3.59 | 2.09 | 0.41 | 0.67 | 0.23 | 0.97 | 15.33 | |||||||||||||
1940 | 0.39 | 0.76 | 0.82 | 1.04 | 2.29 | 0.64 | 0.51 | 1.98 | 1.66 | 0.31 | a | 2.58 | 0.33 | 13.31 | ||||||||||||
1941 | 0.56 | 0.28 | 2.29 | 3.35 | 9.19 | 5.04 | 3.08 | 2.31 | 6.66 | 7.12 | 0.00 | 0.43 | 40.31 | |||||||||||||
1942 | 0.07 | 0.52 | 0.18 | 4.69 | 0.55 | 2.26 | 0.78 | 6.50 | 1.36 | 3.50 | 0.00 | 1.05 | 21.46 | |||||||||||||
1943 | 0.00 | 0.00 | 0.26 | 0.00 | 1.27 | 5.89 | 1.57 | 1.34 | 1.24 | 0.10 | 0.30 | 2.00 | b | 13.97 | ||||||||||||
1944 | 0.40 | b | 0.33 | 0.10 | 0.88 | 1.30 | 3.98 | 1.98 | 3.38 | 2.04 | 1.84 | 0.58 | 1.53 | 18.34 | ||||||||||||
1945 | 1.09 | 0.12 | 0.26 | 0.48 | 1.69 | 0.00 | 3.49 | 3.49 | 2.11 | 1.09 | 0.00 | 0.11 | 13.93 | |||||||||||||
1946 | ----- | z | ----- | z | ----- | z | 0.08 | 0.88 | 0.46 | 1.32 | 3.85 | 5.50 | 1.48 | 0.89 | 0.06 | 14.52 | c | |||||||||
1947 | 0.17 | 0.00 | 0.55 | 2.17 | 2.64 | 0.20 | ----- | z | ----- | z | ----- | z | ----- | z | 0.78 | ----- | z | 6.51 | e | |||||||
1948 | 1.23 | g | 1.09 | 0.91 | g | 0.20 | g | 2.28 | g | 0.85 | e | 1.12 | b | 1.25 | 0.00 | 3.31 | 1.80 | 0.00 | 9.42 | d | ||||||
1949 | 1.85 | a | 0.90 | 0.60 | 2.30 | 4.17 | 5.18 | 9.42 | ----- | z | 1.23 | w | 0.22 | a | 0.00 | ----- | z | 24.64 | c | |||||||
1950 | 0.00 | 0.04 | 0.00 | 0.06 | 0.40 | 2.44 | 6.95 | 1.55 | 3.56 | 0.00 | 0.00 | a | 0.00 | a | 15.00 | |||||||||||
1951 | 0.47 | 0.48 | 0.64 | 0.00 | 2.84 | 1.29 | 3.79 | 1.73 | 0.12 | 0.93 | 0.56 | 0.00 | 12.85 | |||||||||||||
1952 | 0.28 | 0.36 | 0.18 | 0.69 | 0.03 | 0.52 | 3.59 | 3.25 | 0.94 | 0.00 | 1.11 | 0.23 | 11.18 | |||||||||||||
1953 | 0.48 | 0.25 | 0.20 | 0.33 | 3.25 | 0.31 | 4.26 | 1.16 | 0.00 | 0.95 | 1.00 | 0.60 | 12.79 | |||||||||||||
1954 | 0.08 | 0.27 | 0.00 | 0.75 | 3.57 | 0.81 | 3.00 | 2.67 | 0.79 | 3.38 | a | 0.30 | 0.00 | 15.62 | ||||||||||||
1955 | 0.15 | 0.00 | 0.00 | 1.19 | 1.72 | 0.69 | 3.31 | 1.90 | 2.60 | 0.41 | 0.00 | 0.11 | 12.08 | |||||||||||||
1956 | 0.00 | 0.53 | 0.00 | 0.17 | 0.97 | 2.24 | 3.48 | 2.82 | ----- | z | 0.63 | 0.27 | 0.00 | 11.11 | a | |||||||||||
1957 | 0.05 | 0.49 | 1.04 | 0.80 | 2.67 | 0.96 | 3.52 | 2.04 | 0.40 | 3.37 | 0.86 | 0.37 | 16.57 | |||||||||||||
1958 | 1.18 | 0.15 | 2.23 | 1.67 | 0.47 | 0.81 | 4.60 | 4.05 | 2.55 | 0.84 | 0.31 | 0.36 | 19.22 | |||||||||||||
1959 | 0.15 | 0.08 | ----- | z | ----- | z | 2.84 | 2.62 | 3.79 | 6.52 | 0.09 | 1.39 | 0.11 | 2.47 | 20.06 | b | ||||||||||
1960 | 1.20 | 1.65 | 0.47 | 0.00 | 0.94 | 5.41 | 11.39 | 8.16 | 3.28 | 5.75 | 0.00 | 1.77 | 40.02 | |||||||||||||
1961 | 0.26 | 0.33 | 1.46 | 0.81 | 0.52 | 3.06 | 5.78 | 4.57 | 3.13 | 0.95 | 1.43 | 0.73 | 23.03 | |||||||||||||
1962 | 0.35 | 0.31 | 0.70 | 0.64 | 0.76 | 2.22 | 2.85 | 0.62 | 2.39 | 0.12 | 0.94 | 0.89 | 12.79 | |||||||||||||
1963 | 0.32 | 1.36 | 0.00 | 0.30 | 3.38 | 3.28 | 0.95 | 3.17 | 0.00 | 1.05 | 0.37 | 0.08 | 14.26 | |||||||||||||
1964 | 0.02 | 1.60 | 0.35 | 0.05 | 0.58 | 0.93 | 0.94 | 0.21 | 2.39 | 0.02 | 1.98 | 0.46 | 9.53 | |||||||||||||
1965 | 0.00 | 0.81 | 0.95 | 1.61 | 3.89 | 1.96 | 2.39 | 2.60 | 1.13 | 0.00 | 0.00 | 0.69 | 16.03 | |||||||||||||
1966 | 0.40 | 0.73 | 0.00 | 0.31 | 0.73 | 1.93 | 2.52 | 6.22 | 0.63 | 0.00 | 0.11 | 0.05 | 13.63 | |||||||||||||
1967 | 0.00 | 0.18 | 0.30 | 0.09 | 2.23 | 1.22 | 3.58 | 2.34 | 0.62 | 0.25 | 0.25 | 0.85 | 11.91 | |||||||||||||
1968 | 1.28 | 0.42 | 1.92 | 1.03 | 0.89 | 1.39 | 1.96 | 0.90 | 0.00 | 1.37 | 0.51 | 0.12 | 11.79 | |||||||||||||
1969 | 0.00 | 0.83 | 1.03 | 0.69 | 4.52 | 3.02 | 1.62 | 5.69 | 3.42 | 2.58 | 0.50 | 1.48 | 25.38 | |||||||||||||
1970 | 0.04 | 0.01 | 0.79 | 2.66 | 0.00 | 1.16 | 3.63 | 3.26 | 4.29 | 0.89 | 0.06 | 0.00 | 16.79 | |||||||||||||
1971 | 0.32 | 0.69 | 0.28 | 0.34 | 1.30 | 1.73 | 2.81 | 2.98 | 2.20 | 1.67 | 1.20 | 0.69 | 16.21 | |||||||||||||
1972 | 0.03 | 0.09 | 0.05 | 0.00 | 1.53 | 2.16 | 6.93 | 5.21 | 4.37 | 2.19 | 0.65 | 0.10 | 23.31 | |||||||||||||
1973 | 0.88 | 0.63 | 2.18 | 1.77 | 0.60 | 0.97 | 5.77 | 1.61 | 0.60 | 0.95 | 0.15 | 1.08 | 17.19 | |||||||||||||
1974 | 0.34 | 0.91 | 0.08 | 0.02 | 0.20 | 0.34 | 1.42 | 2.39 | 3.80 | 4.30 | 0.37 | 0.44 | 14.61 | |||||||||||||
1975 | 0.41 | 1.18 | 0.42 | 0.92 | 0.44 | 0.17 | 5.66 | 1.43 | 1.69 | 0.00 | 0.72 | 0.05 | 13.09 | |||||||||||||
1976 | 0.05 | 0.08 | 0.28 | 0.74 | 1.07 | 0.56 | 3.63 | 2.42 | 5.07 | 0.78 | 0.35 | 0.00 | 15.03 | |||||||||||||
1977 | 0.20 | 0.76 | 0.66 | 2.37 | 2.09 | 1.19 | 3.00 | 3.79 | 1.42 | 0.40 | 0.39 | 0.01 | 16.28 | |||||||||||||
1978 | 0.81 | 0.82 | 0.37 | 0.67 | 2.08 | 3.63 | 1.64 | 1.85 | 1.63 | 0.71 | 3.25 | 0.40 | 17.86 | |||||||||||||
1979 | 1.02 | 0.20 | 0.39 | 2.42 | 2.01 | 3.14 | 3.57 | 3.64 | 1.94 | 1.10 | 0.70 | 0.17 | 20.30 | |||||||||||||
1980 | 0.20 | 0.72 | 0.77 | 1.72 | 2.99 | 0.01 | 0.31 | 1.61 | 4.21 | 0.05 | 1.17 | 0.30 | 14.06 | |||||||||||||
1981 | 0.21 | 0.10 | 1.08 | 0.63 | 0.57 | 3.12 | 3.50 | 7.69 | 3.27 | 2.02 | 0.27 | 0.00 | 22.46 | |||||||||||||
1982 | 0.19 | 0.36 | 0.37 | 0.16 | 1.28 | 2.76 | 4.24 | 1.09 | 1.84 | 2.25 | 0.87 | 1.46 | 16.87 | |||||||||||||
1983 | 0.88 | 0.93 | 1.24 | 1.26 | 0.92 | 1.41 | 0.53 | 1.20 | 0.21 | 2.17 | 0.74 | 0.97 | 12.46 | |||||||||||||
1984 | 0.30 | 0.33 | 0.85 | ----- | z | ----- | z | ----- | z | ----- | z | 3.02 | 0.81 | 4.10 | 1.37 | 0.63 | 11.41 | d | ||||||||
1985 | 0.53 | 0.31 | 3.85 | 1.05 | 1.67 | a | 2.39 | a | 0.63 | 3.38 | 3.39 | b | 2.28 | 0.97 | 0.07 | b | 20.52 | |||||||||
1986 | 0.00 | 1.51 | 0.06 | b | 0.48 | 4.51 | 3.88 | 0.24 | 4.52 | a | 4.85 | 2.73 | 3.55 | 1.15 | a | 27.48 | ||||||||||
1987 | 0.67 | 1.60 | 0.62 | 0.26 | 2.74 | 3.31 | 0.60 | a | 3.79 | 1.73 | 0.37 | 0.27 | 0.92 | 16.88 | ||||||||||||
1988 | 0.00 | 0.10 | 0.15 | 2.20 | a | 2.95 | 9.07 | 4.09 | 5.89 | 2.84 | 0.28 | 0.22 | 0.31 | 28.10 | ||||||||||||
1989 | 0.14 | 0.54 | 0.15 | 0.20 | 1.34 | 4.05 | 1.00 | 4.78 | 1.60 | 0.25 | 0.00 | 0.29 | 14.34 | |||||||||||||
1990 | 1.27 | 1.83 | a | 0.34 | 0.90 | 0.38 | 0.00 | 4.72 | 1.74 | 5.36 | 0.00 | 1.09 | 0.00 | 17.63 | ||||||||||||
1991 | 0.81 | 0.00 | 0.81 | 0.00 | 3.98 | 0.25 | 9.64 | 5.65 | 3.09 | 0.22 | 1.64 | 2.45 | 28.54 | |||||||||||||
1992 | 0.98 | 0.34 | 0.17 | 0.95 | 1.74 | 2.23 | 2.33 | 3.08 | 0.82 | 0.24 | 0.27 | 0.66 | 13.81 | |||||||||||||
1993 | 0.94 | 0.35 | 0.74 | 0.20 | 1.33 | 3.51 | 5.44 | 2.20 | 1.53 | d | 1.69 | 0.52 | 0.15 | 18.60 | ||||||||||||
1994 | 0.11 | 0.00 | a | 1.55 | 1.39 | 3.08 | i | 0.43 | 2.19 | 2.87 | 0.20 | 1.29 | 0.46 | 0.80 | 11.29 | a | ||||||||||
1995 | 0.34 | 0.50 | 1.10 | 0.20 | 3.50 | 2.30 | 0.10 | 1.80 | 2.30 | 1.00 | 0.00 | 0.60 | 13.74 | |||||||||||||
1996 | 0.20 | 0.20 | 0.00 | 0.00 | 0.10 | 5.07 | 2.38 | 5.26 | 2.41 | 1.95 | 0.37 | 0.10 | a | 18.04 | ||||||||||||
1997 | 0.45 | 0.88 | 0.00 | 4.80 | 1.30 | 3.10 | 4.57 | 4.03 | 2.40 | 0.66 | a | 0.93 | 2.23 | 25.35 | ||||||||||||
1998 | 0.10 | 0.51 | 1.74 | 1.28 | 0.05 | 0.32 | 3.66 | a | 2.18 | 0.70 | ----- | z | 0.30 | 0.28 | 11.12 | a | ||||||||||
1999 | 1.40 | 0.00 | 1.23 | 2.73 | 3.68 | 0.75 | 4.10 | 2.66 | d | 1.63 | 0.25 | 0.10 | 1.23 | 19.76 | ||||||||||||
2000 | 0.00 | 0.00 | 1.99 | 0.38 | 0.31 | 3.75 | e | 2.98 | b | 0.40 | 0.15 | 4.02 | 1.00 | 0.63 | 15.61 | |||||||||||
2001 | 1.08 | 0.70 | 1.60 | 0.08 | 0.85 | 1.00 | 0.57 | a | 3.48 | 0.15 | 0.00 | 1.75 | 0.26 | 11.52 | ||||||||||||
2002 | 0.51 | 0.00 | 0.65 | 0.50 | 0.22 | 0.62 | c | 2.55 | b | 1.15 | 4.75 | 1.30 | 0.50 | 0.74 | 13.49 | |||||||||||
2003 | 0.00 | 0.99 | b | 0.91 | 0.00 | 1.20 | 3.63 | 0.05 | 3.22 | 0.71 | 2.54 | c | 0.65 | b | 0.10 | 14.00 | ||||||||||
2004 | 0.15 | 1.13 | 0.80 | 3.49 | 0.07 | b | 1.60 | 3.32 | 2.95 | 2.18 | 2.61 | 2.05 | 0.47 | 20.82 | ||||||||||||
2005 | 1.16 | a | 0.93 | b | 1.77 | 1.02 | 2.14 | 0.54 | 0.65 | 4.98 | 2.36 | 0.81 | 0.10 | 0.00 | 16.46 | |||||||||||
2006 | 0.19 | 0.05 | 0.08 | 0.52 | 0.35 | 2.54 | 1.18 | a | 6.73 | 1.44 | a | 0.55 | 0.10 | 1.22 | 14.95 | |||||||||||
2007 | 0.92 | 0.26 | 2.12 | a | 0.60 | 1.29 | b | 3.14 | 0.32 | 2.26 | 0.65 | 0.20 | 0.12 | 0.84 | 12.72 | |||||||||||
2008 | 0.10 | 0.15 | 0.32 | 0.28 | 1.70 | 1.65 | 5.93 | 4.29 | 1.26 | 3.43 | 0.10 | k | 0.10 | 19.21 | a | |||||||||||
2009 | 0.00 | 0.82 | 1.30 | 0.30 | 0.34 | 1.73 | 4.55 | 2.27 | 0.75 | 2.35 | 0.25 | f | 1.18 | 15.59 | a | |||||||||||
2010 | 1.15 | 1.14 | 1.94 | 2.00 | 1.65 | 2.15 | 3.68 | 2.20 | 2.97 | 0.75 | 0.00 | 0.20 | 19.83 | |||||||||||||
2011 | 0.05 | 0.68 | 0.00 | 0.00 | 0.00 | 1.30 | b | 0.10 | 2.68 | 1.00 | a | 1.40 | c | 0.00 | 0.70 | e | 7.91 | |||||||||
2012 | 0.00 | 0.00 | 0.10 | 0.78 | b | 2.65 | 0.46 | 1.05 | c | 1.77 | 1.00 | a | 1.42 | 0.00 | 0.07 | f | 9.23 | a | ||||||||
2013 | 0.40 | 1.38 | 0.10 | 0.00 | 0.00 | g | 1.39 | a | 2.65 | 1.08 | 4.70 | 0.17 | 0.55 | 0.30 | 12.72 | a | ||||||||||
2014 | 0.00 | 0.25 | 0.20 | 0.25 | a | 2.38 | 0.75 | 4.90 | 1.88 | 2.13 | 0.38 | 0.46 | 0.22 | 13.80 | ||||||||||||
2015 | 2.09 | 1.06 | 0.22 | b | 1.15 | a | 5.75 | a | 3.22 | 7.00 | 1.03 | a | 1.05 | 2.72 | 0.70 | c | 2.07 | 28.06 | ||||||||
2016 | 0.38 | 0.60 | 0.00 | 0.70 | 0.80 | 3.71 | 0.88 | c | 1.65 | 3.05 | 0.00 | 2.40 | d | 0.36 | 14.53 | |||||||||||
2017 | 1.35 | 0.00 | 0.90 | 1.12 | 0.87 | 1.86 | 3.40 | 6.44 | 2.93 | c | 0.25 | 0.00 | 0.00 | 19.12 | ||||||||||||
2018 | 0.15 | 0.00 | 0.00 | 0.20 | 1.77 | 0.80 | b | 4.09 | b | 4.07 | 2.35 | 5.13 | a | 0.29 | 0.85 | 19.70 | ||||||||||
2019 | 0.00 | 0.05 | 0.54 | 1.02 | 1.53 | b | 2.48 | a | 1.98 | 2.85 | 2.60 | 2.57 | 0.61 | 0.18 | 16.41 | |||||||||||
2020 | 1.25 | 0.28 | 1.01 | 0.38 | 0.95 | 0.40 | 3.20 | b | 0.81 | 1.10 | 0.66 | 0.15 | 0.10 | 10.29 | ||||||||||||
2021 | 0.24 | 0.15 | 1.18 | 0.18 | 1.58 | 3.05 | 5.15 | d | 2.62 | 0.10 | 0.68 | 0.00 | 0.00 | 14.93 | ||||||||||||
2022 | 0.06 | 0.26 | 0.65 | 0.00 | 0.30 | 0.85 | 1.94 | 5.26 | 0.35 | 2.47 | a | 0.60 | 0.20 | 12.94 | ||||||||||||
2023 | 0.43 | 0.26 | 0.25 | a | 0.50 | 5.69 | 5.11 | 2.35 | 2.35 | 1.65 | 3.80 | 0.35 | 1.05 | 23.79 | ||||||||||||
2024 | 0.35 | 0.70 | 0.16 | 0.53 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.21 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.47 | 0.52 | 0.69 | 0.89 | 1.89 | 2.05 | 3.08 | 3.03 | 2.07 | 1.42 | 0.63 | 0.57 | 17.42 | |||||||||||||
S.D. | 0.49 | 0.48 | 0.71 | 1.00 | 1.76 | 1.62 | 2.20 | 1.75 | 1.56 | 1.45 | 0.72 | 0.60 | 5.89 | |||||||||||||
SKEW | 1.12 | 0.92 | 1.60 | 1.88 | 2.00 | 1.32 | 1.18 | 0.84 | 0.74 | 1.46 | 1.90 | 1.41 | 1.75 | |||||||||||||
MAX | 2.09 | 1.83 | 3.85 | 4.80 | 9.35 | 9.07 | 11.39 | 8.16 | 6.66 | 7.12 | 3.55 | 2.47 | 40.31 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.05 | 0.21 | 0.00 | 0.00 | 0.00 | 0.00 | 7.91 | |||||||||||||
YRS | 87 | 89 | 87 | 86 | 85 | 88 | 87 | 87 | 86 | 87 | 87 | 86 | 75 |