YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1935 | 0.30 | 1.15 | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.10 | 0.32 | 0.00 | 0.24 | 0.42 | 2.78 | |||||||||||||
1936 | 0.02 | 0.36 | 0.00 | 0.00 | 0.00 | 0.17 | 1.00 | 0.14 | 0.12 | 0.31 | 0.48 | 0.69 | 3.29 | |||||||||||||
1937 | 0.12 | 0.03 | 0.26 | 0.00 | 0.00 | 0.00 | 0.03 | 0.00 | 0.00 | 0.00 | 0.00 | 0.53 | 0.97 | |||||||||||||
1938 | 0.07 | 0.68 | 1.05 | 0.00 | 0.05 | 0.00 | 0.07 | 0.00 | 0.12 | 0.00 | 0.00 | 1.39 | 3.43 | |||||||||||||
1939 | 0.98 | 0.05 | 0.54 | 0.04 | 0.00 | 0.00 | 0.33 | 0.08 | 6.97 | s | 0.00 | 0.59 | 0.00 | 2.61 | a | |||||||||||
1940 | 0.45 | 0.54 | 0.00 | 0.05 | 0.00 | 0.00 | 0.00 | 0.00 | 0.78 | 0.00 | 0.15 | 2.14 | 4.11 | |||||||||||||
1941 | 0.88 | 1.36 | 2.22 | 1.00 | 0.00 | 0.00 | 0.14 | 0.45 | 0.12 | 0.51 | 0.42 | 0.84 | 7.94 | |||||||||||||
1942 | 0.18 | 0.00 | 0.04 | 0.02 | 0.00 | 0.00 | 0.28 | 1.23 | 0.00 | 0.10 | 0.00 | 0.06 | 1.91 | |||||||||||||
1943 | 0.94 | 0.00 | 0.48 | 0.20 | 0.00 | 0.00 | 0.00 | 0.14 | 0.10 | 0.04 | 0.00 | 0.72 | 2.62 | |||||||||||||
1944 | 0.10 | 1.25 | 0.50 | 0.06 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.04 | 1.02 | 0.12 | 3.09 | |||||||||||||
1945 | 0.16 | 0.45 | 0.16 | 0.00 | 0.00 | 0.00 | 0.15 | 0.41 | 0.00 | 0.92 | 0.00 | 0.29 | 2.54 | |||||||||||||
1946 | 0.08 | 0.00 | 0.03 | 0.00 | 0.00 | 0.00 | 0.29 | 0.05 | 0.24 | 0.08 | 0.12 | 0.22 | 1.11 | |||||||||||||
1947 | 0.00 | 0.00 | 0.07 | 0.00 | 0.04 | 0.00 | 0.02 | 0.80 | 0.00 | 0.28 | 0.00 | 0.75 | 1.96 | |||||||||||||
1948 | 0.00 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 1.10 | 0.00 | 0.00 | 0.75 | 0.00 | i | 0.31 | 2.17 | a | |||||||||||
1949 | 3.04 | 0.03 | 0.00 | 0.03 | 0.00 | 0.00 | 0.00 | 0.00 | 0.05 | 0.04 | 0.18 | 0.35 | 3.72 | |||||||||||||
1950 | 0.01 | 0.01 | 0.05 | 0.00 | 0.00 | 0.00 | 0.72 | 0.14 | 0.34 | 0.00 | 0.00 | 0.00 | 1.27 | |||||||||||||
1951 | 0.71 | 0.00 | 0.00 | 0.51 | 0.19 | 0.00 | 0.10 | 1.79 | 0.08 | 0.48 | 0.41 | 0.26 | 4.53 | |||||||||||||
1952 | 0.66 | 0.03 | 0.70 | 0.64 | 0.00 | 0.00 | 0.43 | 0.00 | 0.16 | 0.00 | 0.21 | 0.87 | 3.70 | |||||||||||||
1953 | 0.00 | 0.09 | 0.16 | 0.00 | 0.02 | 0.00 | 0.07 | 0.16 | 0.00 | 0.00 | 0.00 | 0.00 | 0.50 | |||||||||||||
1954 | 1.19 | 0.01 | 0.89 | 0.00 | 0.00 | 0.00 | 0.53 | a | 0.01 | 0.03 | 0.04 | 0.00 | 0.00 | 2.70 | ||||||||||||
1955 | 1.53 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.35 | 1.62 | 0.00 | 0.00 | 0.00 | 0.03 | 3.53 | |||||||||||||
1956 | 0.00 | 0.03 | 0.00 | 0.03 | 0.00 | 0.00 | 0.15 | 0.00 | 0.00 | 0.05 | 0.00 | 0.00 | 0.26 | |||||||||||||
1957 | 0.56 | 0.00 | 0.02 | 0.02 | 0.05 | 0.07 | 0.09 | 1.06 | 0.00 | 1.86 | 0.05 | 0.07 | 3.85 | |||||||||||||
1958 | 0.10 | 0.47 | 0.44 | 0.17 | 0.14 | 0.00 | 0.15 | 0.36 | 0.02 | 0.16 | 0.09 | 0.00 | 2.10 | |||||||||||||
1959 | 0.00 | 0.11 | 0.00 | 0.03 | 0.00 | 0.00 | 0.18 | 0.56 | 0.12 | 0.93 | 0.00 | 1.86 | 3.79 | |||||||||||||
1960 | 0.94 | 0.54 | 0.29 | 0.00 | 0.00 | 0.00 | 0.05 | 0.00 | 0.84 | 0.00 | 1.07 | 0.02 | 3.75 | |||||||||||||
1961 | 0.20 | 0.00 | 0.15 | 0.00 | 0.00 | 0.00 | 0.21 | 0.36 | 0.00 | 0.00 | 0.00 | 0.48 | 1.40 | |||||||||||||
1962 | 0.17 | 0.05 | 0.06 | 0.00 | 0.00 | 0.00 | 0.00 | 0.09 | 0.00 | 0.01 | 0.00 | 1.46 | 1.84 | |||||||||||||
1963 | 0.34 | 0.21 | 0.08 | 0.14 | 0.00 | 0.00 | 0.00 | 0.12 | 1.46 | 0.57 | 0.52 | 0.00 | 3.44 | |||||||||||||
1964 | 0.00 | 0.00 | 0.21 | 0.22 | 0.07 | 0.00 | 0.03 | 0.05 | 0.00 | 0.04 | 0.44 | 0.12 | 1.18 | |||||||||||||
1965 | 0.01 | 0.08 | 0.40 | 1.66 | 0.00 | 0.00 | 0.48 | 0.06 | 0.00 | 0.00 | 0.83 | 1.97 | 5.49 | |||||||||||||
1966 | 0.79 | 0.62 | 0.15 | 0.00 | 0.00 | 0.00 | 0.00 | 0.13 | 0.17 | 1.47 | 0.22 | 0.14 | 3.69 | |||||||||||||
1967 | 0.12 | 0.00 | 0.08 | 0.20 | 0.00 | 0.00 | 0.23 | 1.69 | 0.65 | 0.00 | 0.21 | 0.94 | 4.12 | |||||||||||||
1968 | 0.00 | 0.13 | 0.32 | 0.00 | 0.00 | 0.00 | 0.59 | 0.00 | 0.00 | 2.08 | 0.09 | 0.22 | 3.43 | |||||||||||||
1969 | 1.47 | 0.15 | 0.02 | 0.00 | 0.12 | 0.07 | 0.83 | 0.00 | 1.05 | 0.06 | 0.45 | 0.12 | 4.34 | |||||||||||||
1970 | 0.10 | 0.25 | 0.42 | 0.02 | 0.00 | 0.00 | 0.40 | 1.25 | 0.10 | 0.00 | 0.14 | 0.13 | 2.81 | |||||||||||||
1971 | 0.00 | 0.05 | 0.00 | 0.00 | 0.14 | 0.00 | 0.08 | 0.88 | 0.30 | 0.16 | 0.00 | 0.10 | 1.71 | |||||||||||||
1972 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.24 | 0.09 | 0.21 | 0.10 | 1.26 | 0.35 | 0.00 | 3.25 | |||||||||||||
1973 | 0.13 | 0.33 | ----- | z | 0.00 | 0.00 | 0.00 | 0.00 | 0.02 | 0.00 | 0.00 | 0.30 | 0.00 | 0.78 | a | |||||||||||
1974 | 1.59 | 0.00 | 0.28 | 0.00 | 0.00 | 0.00 | 0.00 | 0.02 | 0.00 | 1.19 | 0.02 | 0.76 | 3.86 | |||||||||||||
1975 | 0.03 | 0.07 | 0.11 | 0.14 | 0.00 | 0.00 | 0.12 | 0.00 | 0.08 | 0.01 | 0.02 | 0.01 | 0.59 | |||||||||||||
1976 | 0.02 | 1.20 | 0.03 | 0.70 | 0.00 | 0.00 | 0.07 | 0.00 | 2.45 | 0.08 | 0.00 | 0.06 | 4.61 | |||||||||||||
1977 | 0.55 | 0.00 | 0.30 | 0.05 | 0.04 | 0.13 | 0.05 | 1.37 | 0.00 | 0.11 | 0.00 | 0.25 | 2.85 | |||||||||||||
1978 | 2.46 | 0.60 | 0.71 | 0.18 | 0.00 | 0.00 | 0.00 | 0.28 | 0.01 | 1.23 | 0.93 | 0.65 | 7.05 | |||||||||||||
1979 | 0.89 | 0.13 | 0.84 | 0.00 | 0.21 | 0.00 | 1.75 | 0.30 | 0.00 | 0.02 | 0.00 | 0.47 | 4.61 | |||||||||||||
1980 | 1.19 | 1.58 | 0.72 | 0.52 | 0.03 | 0.00 | 0.17 | 0.00 | 0.14 | 0.02 | 0.00 | 0.00 | 4.37 | |||||||||||||
1981 | 0.17 | 0.22 | 0.99 | 0.00 | 0.39 | 0.04 | 0.33 | 1.12 | 0.23 | 0.02 | 0.57 | 0.00 | 4.08 | |||||||||||||
1982 | 0.06 | 0.35 | 0.59 | 0.01 | 0.47 | 0.00 | 0.23 | 0.34 | 0.05 | 0.00 | 0.32 | 1.19 | 3.61 | |||||||||||||
1983 | 0.14 | 0.28 | 2.03 | 0.01 | 0.00 | 0.00 | 0.00 | 1.16 | 0.53 | 0.78 | 0.07 | 0.59 | a | 5.59 | ||||||||||||
1984 | 0.05 | 0.06 | 0.00 | 0.03 | 0.00 | 0.00 | 0.95 | 1.05 | 0.03 | 0.00 | 0.65 | 2.43 | 5.25 | |||||||||||||
1985 | 0.44 | 0.25 | 0.11 | 0.08 | 0.00 | 0.00 | 0.11 | 0.00 | 0.67 | 0.25 | 1.08 | 0.39 | 3.38 | |||||||||||||
1986 | 0.27 | 1.03 | 0.26 | 0.00 | 0.00 | 0.00 | 1.47 | 0.12 | 0.00 | 0.62 | 0.35 | 0.57 | 4.69 | |||||||||||||
1987 | 0.30 | 0.00 | 0.03 | 0.09 | 0.55 | 0.00 | 0.76 | 0.05 | 0.02 | 1.12 | a | 0.44 | 0.76 | 4.12 | ||||||||||||
1988 | 0.50 | 0.96 | 0.10 | 0.30 | 0.00 | 0.02 | 0.09 | 0.10 | a | 0.09 | 0.00 | 0.00 | 0.00 | 2.16 | ||||||||||||
1989 | 0.94 | a | 0.02 | 0.00 | 0.00 | 0.00 | a | 0.00 | 0.00 | 0.27 | 0.00 | ----- | z | 0.00 | 0.05 | 1.28 | a | |||||||||
1990 | 0.14 | 0.15 | 0.18 | 0.01 | 0.19 | 0.05 | 0.05 | 0.59 | 0.16 | 0.90 | 0.14 | 0.00 | 2.56 | |||||||||||||
1991 | 0.90 | 0.55 | 1.01 | a | 0.00 | 0.00 | 0.00 | 0.00 | 0.80 | 0.12 | 0.06 | 0.07 | 0.54 | 4.05 | ||||||||||||
1992 | 0.48 | 1.79 | 3.18 | 0.15 | 0.44 | 0.00 | 0.03 | 0.35 | 0.00 | 0.30 | 0.00 | 1.20 | 7.92 | |||||||||||||
1993 | 3.15 | 1.46 | 0.96 | 0.00 | 0.03 | 0.00 | 0.00 | 0.12 | 0.00 | 0.04 | 0.28 | 0.00 | 6.04 | |||||||||||||
1994 | 0.08 | 0.12 | 1.14 | 0.01 | 0.30 | 0.00 | 0.41 | 0.28 | 0.00 | 0.00 | 0.25 | 1.60 | a | 4.19 | ||||||||||||
1995 | 2.21 | 0.34 | 0.27 | 0.03 | 0.03 | 0.00 | 0.00 | 0.00 | 0.03 | 0.00 | 0.00 | 0.04 | 2.95 | |||||||||||||
1996 | 0.00 | 0.14 | 0.38 | 0.00 | 0.21 | 0.00 | 0.02 | 0.00 | 0.00 | 0.10 | 0.37 | 0.02 | 1.24 | |||||||||||||
1997 | 0.39 | 0.00 | 0.00 | 0.31 | 0.00 | 0.00 | 0.18 | 0.00 | 2.26 | 0.19 | 0.08 | 1.91 | 5.32 | |||||||||||||
1998 | 0.40 | 2.01 | 0.62 | 0.01 | 0.04 | 0.00 | 0.62 | 0.11 | 1.12 | 0.08 | 0.03 | 0.26 | 5.30 | |||||||||||||
1999 | 0.00 | ----- | z | 0.00 | 0.72 | a | 0.07 | 0.00 | 0.74 | 0.56 | 0.23 | 0.00 | 0.00 | 0.00 | 2.32 | a | ||||||||||
2000 | 0.02 | 0.23 | a | 0.15 | 0.00 | 0.00 | 0.00 | 0.00 | 2.10 | a | 0.03 | 0.37 | 0.02 | 0.00 | 2.92 | |||||||||||
2001 | 0.68 | 1.10 | 0.51 | 0.07 | 0.00 | 0.00 | a | 0.25 | 0.24 | 0.00 | 0.00 | 0.11 | 0.48 | b | 3.44 | |||||||||||
2002 | 0.08 | 0.00 | 0.04 | 0.03 | 0.00 | 0.00 | a | 0.09 | 0.00 | 0.40 | 0.00 | 0.06 | a | 0.29 | 0.99 | |||||||||||
2003 | 0.07 | 1.23 | 0.96 | 0.13 | 0.00 | 0.00 | ----- | z | 0.18 | 0.00 | 0.00 | 0.30 | 0.15 | 3.02 | a | |||||||||||
2004 | 0.00 | 1.48 | 0.50 | 0.43 | 0.00 | 0.00 | 0.00 | 0.32 | 1.16 | 0.82 | 0.39 | 1.30 | 6.40 | |||||||||||||
2005 | 1.82 | 3.15 | 0.10 | 0.01 | 0.00 | 0.00 | 0.15 | 0.95 | 0.00 | 0.49 | 0.00 | 0.00 | 6.67 | |||||||||||||
2006 | 0.00 | 0.00 | 0.10 | 0.02 | 0.00 | 0.00 | 0.15 | 0.00 | 0.00 | 0.16 | 0.00 | 0.00 | 0.43 | |||||||||||||
2007 | 0.34 | 0.08 | 0.32 | 0.06 | 0.00 | 0.00 | 1.51 | 0.18 | 0.80 | 0.00 | 0.20 | 0.72 | 4.21 | |||||||||||||
2008 | 1.03 | 0.34 | 0.00 | 0.00 | 0.32 | 0.00 | 0.00 | 2.31 | 0.08 | 0.00 | 1.14 | f | 1.34 | 5.42 | a | |||||||||||
2009 | 0.01 | 1.49 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.27 | 0.00 | 0.00 | 0.00 | 0.45 | 2.22 | |||||||||||||
2010 | 2.74 | 0.70 | 0.76 | 0.00 | 0.00 | 0.00 | 0.00 | 0.75 | 0.00 | 1.06 | 0.00 | 1.42 | 7.43 | |||||||||||||
2011 | 0.01 | a | 0.44 | g | 0.10 | e | 0.09 | a | 0.00 | 0.00 | 0.33 | 0.00 | f | 0.83 | a | 0.09 | a | 0.16 | 0.42 | 2.03 | b | |||||
2012 | 0.03 | 0.57 | 0.03 | b | 0.26 | 0.00 | 0.00 | 1.01 | c | 0.85 | 0.00 | 0.03 | b | 0.00 | h | 0.99 | b | 3.77 | a | |||||||
2013 | 1.01 | c | 0.09 | 0.06 | 0.00 | c | 0.00 | e | 0.00 | 0.36 | 0.35 | c | 0.09 | 0.00 | 0.86 | 0.00 | a | 2.82 | ||||||||
2014 | 0.00 | e | 0.00 | c | 0.06 | c | 0.10 | e | 0.00 | g | 0.00 | f | 0.30 | a | 3.75 | b | 0.51 | a | 0.00 | 0.00 | 0.52 | 5.24 | b | |||
2015 | 0.92 | c | 0.10 | 0.00 | 0.02 | b | 0.15 | 0.07 | a | 0.31 | 0.00 | 0.00 | b | 0.69 | 0.10 | b | 0.18 | 2.54 | ||||||||
2016 | 0.80 | a | 0.27 | 0.00 | e | 1.05 | b | 0.03 | 0.00 | 0.00 | 0.44 | d | 0.25 | 0.31 | f | 0.15 | b | 2.00 | 4.99 | a | ||||||
2017 | 1.45 | c | 0.90 | f | 0.03 | g | 0.00 | a | 0.33 | h | 0.00 | 0.07 | f | 0.64 | f | 0.19 | j | 0.00 | h | 0.00 | f | 0.00 | r | 1.45 | i | |
2018 | 0.00 | p | 0.00 | 0.02 | p | 0.00 | i | 0.00 | 0.00 | 0.03 | 0.35 | a | 0.00 | 1.12 | 0.30 | a | 1.20 | 3.00 | c | |||||||
2019 | 1.11 | 0.72 | 0.50 | a | 0.18 | 0.00 | b | 0.00 | g | 0.42 | 0.00 | 0.05 | 0.00 | 2.28 | 1.62 | b | 6.88 | a | ||||||||
2020 | 0.00 | a | 0.03 | b | 1.08 | c | 0.80 | a | 0.00 | 0.00 | 0.00 | 0.00 | c | 0.00 | 0.00 | b | 0.00 | b | 0.00 | c | 1.91 | |||||
2021 | 0.33 | 0.00 | 0.02 | a | 0.00 | b | 0.00 | b | 0.01 | 0.79 | 0.56 | 0.34 | 0.21 | 0.00 | 0.40 | 2.66 | ||||||||||
2022 | 0.00 | 0.00 | 0.15 | 0.00 | 0.00 | 0.00 | b | 0.00 | 0.42 | 0.00 | g | 0.71 | a | 0.00 | b | 0.17 | b | 1.45 | a | |||||||
2023 | 0.56 | 0.00 | a | 0.48 | a | 0.00 | 0.00 | 0.00 | 0.00 | 0.82 | d | 0.43 | b | 0.00 | 0.20 | 0.25 | 2.74 | |||||||||
2024 | 0.50 | a | 2.24 | 0.63 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 3.37 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.53 | 0.42 | 0.36 | 0.13 | 0.05 | 0.02 | 0.27 | 0.43 | 0.24 | 0.29 | 0.23 | 0.51 | 3.43 | |||||||||||||
S.D. | 0.71 | 0.61 | 0.52 | 0.28 | 0.11 | 0.13 | 0.37 | 0.63 | 0.45 | 0.46 | 0.35 | 0.61 | 1.74 | |||||||||||||
SKEW | 1.91 | 2.01 | 2.84 | 3.16 | 2.75 | 8.66 | 2.00 | 2.52 | 2.98 | 1.84 | 2.98 | 1.32 | 0.52 | |||||||||||||
MAX | 3.15 | 3.15 | 3.18 | 1.66 | 0.55 | 1.24 | 1.75 | 3.75 | 2.45 | 2.08 | 2.28 | 2.43 | 7.94 | |||||||||||||
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 | 0.26 | |||||||||||||
YRS | 89 | 87 | 87 | 88 | 87 | 87 | 87 | 87 | 86 | 86 | 85 | 88 | 74 |