YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1940 | ----- | z | ----- | z | 0.28 | i | 0.10 | 0.00 | 0.05 | 0.00 | 0.00 | 0.99 | 0.19 | 0.22 | 2.94 | 4.49 | c | |||||||||
1941 | 0.84 | 0.39 | 2.65 | 2.12 | 0.00 | 0.00 | 0.06 | 2.18 | 0.05 | 0.55 | 0.67 | 1.45 | 10.96 | |||||||||||||
1942 | 0.18 | 0.00 | 0.27 | 0.17 | 0.00 | 0.00 | 0.00 | 1.23 | 0.00 | 0.17 | 0.03 | 0.00 | 2.05 | |||||||||||||
1943 | 1.95 | 0.03 | 0.40 | 0.38 | 0.00 | 0.00 | 0.11 | 0.83 | 0.65 | 0.16 | 0.00 | 0.37 | 4.88 | |||||||||||||
1944 | 0.00 | 1.78 | 0.23 | 0.05 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.14 | 0.87 | 0.48 | 3.55 | |||||||||||||
1945 | 0.18 | 0.75 | 0.90 | 0.00 | 0.00 | 0.00 | 0.00 | 2.41 | 0.12 | 0.90 | 0.00 | 1.03 | 6.29 | |||||||||||||
1946 | 0.19 | 0.01 | 0.00 | 0.01 | 0.00 | 0.00 | 1.14 | 0.17 | 1.05 | 0.59 | 1.21 | 0.27 | 4.64 | |||||||||||||
1947 | 0.00 | 0.00 | 0.00 | 0.00 | 0.17 | 0.00 | 0.00 | 0.72 | 0.00 | 0.66 | 0.03 | 0.79 | 2.37 | |||||||||||||
1948 | 0.00 | 0.12 | 0.05 | 0.00 | 0.00 | 0.00 | 0.10 | 0.08 | 0.05 | 0.41 | 0.00 | 0.72 | 1.53 | |||||||||||||
1949 | 4.19 | 0.10 | 0.00 | 0.01 | 0.01 | 0.00 | 0.02 | 0.19 | 0.11 | 0.08 | 0.15 | 0.32 | 5.18 | |||||||||||||
1950 | 0.04 | 0.01 | 0.30 | 0.00 | 0.00 | 0.00 | 0.40 | 0.00 | 0.48 | 0.00 | 0.03 | 0.00 | 1.26 | |||||||||||||
1951 | 0.38 | 0.00 | 0.00 | 0.32 | 0.31 | 0.00 | 0.21 | 4.20 | 0.23 | 0.49 | 0.47 | 0.75 | 7.36 | |||||||||||||
1952 | 0.58 | 0.07 | 1.02 | 1.07 | 0.00 | 0.09 | 0.97 | 0.18 | 0.45 | 0.00 | 0.50 | 0.89 | 5.82 | |||||||||||||
1953 | 0.00 | 0.53 | 0.18 | 0.03 | 0.00 | 0.00 | 1.40 | 0.39 | 0.00 | 0.00 | 0.03 | 0.00 | 2.56 | |||||||||||||
1954 | 1.12 | 0.05 | 1.69 | 0.00 | 0.00 | 0.00 | 0.64 | 0.15 | 0.07 | 0.00 | 0.00 | 0.03 | 3.75 | |||||||||||||
1955 | 1.92 | 0.00 | 0.00 | 0.09 | 0.00 | 0.00 | 1.19 | 1.58 | 0.00 | 0.00 | 0.10 | 0.00 | 4.88 | |||||||||||||
1956 | 0.59 | 0.00 | 0.00 | 0.02 | 0.00 | 0.00 | 0.81 | 0.13 | 0.00 | 0.00 | 0.00 | 0.00 | 1.55 | |||||||||||||
1957 | 0.32 | 0.14 | 0.02 | 0.25 | 0.16 | 0.05 | 0.00 | 1.08 | 0.00 | 1.37 | 0.46 | 0.16 | 4.01 | |||||||||||||
1958 | 0.33 | 1.02 | 0.81 | 0.26 | 0.66 | 0.00 | 0.00 | 0.80 | 0.09 | 0.53 | 0.00 | 0.00 | 4.50 | |||||||||||||
1959 | 0.20 | 0.19 | 0.00 | 0.02 | 0.00 | 0.01 | 0.19 | 2.09 | 0.31 | 1.10 | 0.00 | 2.07 | 6.18 | |||||||||||||
1960 | 0.54 | 0.64 | 0.00 | 0.00 | 0.03 | 0.00 | 0.03 | 0.04 | 0.69 | 0.00 | 1.15 | 0.00 | 3.12 | |||||||||||||
1961 | 0.14 | 0.00 | 0.07 | 0.02 | 0.12 | 0.00 | 0.04 | 0.55 | 0.02 | 0.40 | 0.02 | 0.17 | 1.55 | |||||||||||||
1962 | 0.01 | 0.34 | 0.00 | 0.00 | 0.00 | 0.01 | 0.17 | 0.15 | 0.03 | 0.16 | 0.00 | 0.34 | 1.21 | |||||||||||||
1963 | 0.00 | 0.65 | 0.04 | 0.01 | 0.00 | 0.00 | 0.00 | 0.36 | 1.04 | 1.65 | 0.64 | 0.00 | 4.39 | |||||||||||||
1964 | 0.00 | 0.00 | 0.02 | 0.33 | 0.00 | 0.00 | 0.30 | 0.19 | 0.02 | 0.06 | 0.87 | 0.21 | 2.00 | |||||||||||||
1965 | 0.18 | 0.42 | 1.57 | 2.81 | 0.00 | 0.00 | 0.12 | 0.05 | 0.11 | 0.15 | 1.72 | 2.45 | 9.58 | |||||||||||||
1966 | 0.17 | 0.99 | 0.58 | 0.00 | 0.00 | 0.02 | 0.17 | 0.09 | 0.04 | 0.66 | 0.40 | 0.89 | 4.01 | |||||||||||||
1967 | 0.19 | 0.00 | 0.01 | 0.32 | 0.01 | 0.00 | 0.20 | 0.10 | 0.77 | 0.00 | 0.52 | 0.71 | 2.83 | |||||||||||||
1968 | 0.00 | 0.43 | 0.32 | 0.00 | 0.00 | 0.14 | 1.55 | 0.01 | 0.00 | 0.00 | 0.09 | 0.19 | 2.73 | |||||||||||||
1969 | 0.59 | 0.17 | 0.04 | 0.00 | 0.17 | 0.02 | 0.09 | 0.14 | 1.99 | 0.04 | 0.25 | 0.00 | 3.50 | |||||||||||||
1970 | 0.01 | 0.82 | 0.33 | 0.02 | 0.00 | 0.00 | 0.56 | 1.45 | 0.10 | 0.03 | 0.14 | 0.26 | 3.72 | |||||||||||||
1971 | 0.00 | 0.08 | 0.00 | 0.00 | 0.34 | 0.00 | 0.01 | 2.80 | 0.10 | 0.31 | 0.04 | 0.60 | 4.28 | |||||||||||||
1972 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.41 | 0.02 | 0.36 | 0.32 | 0.90 | 1.04 | 0.16 | 3.21 | |||||||||||||
1973 | 0.12 | 0.82 | 1.30 | 0.06 | 0.00 | 0.08 | 0.00 | 0.24 | 0.00 | 0.00 | 0.36 | 0.00 | 2.98 | |||||||||||||
1974 | 1.55 | 0.00 | 0.65 | 0.00 | 0.00 | 0.00 | 2.21 | 0.29 | 0.17 | 0.09 | 0.36 | 0.40 | 5.72 | |||||||||||||
1975 | 0.00 | 0.21 | 0.49 | 0.08 | 0.00 | 0.00 | 0.01 | 0.00 | 1.60 | 0.11 | 0.08 | 0.19 | 2.77 | |||||||||||||
1976 | 0.00 | 1.56 | 0.00 | 0.48 | 0.00 | 0.00 | 0.01 | 0.14 | 4.72 | 0.84 | 0.23 | 0.28 | 8.26 | |||||||||||||
1977 | 0.25 | 0.00 | 0.26 | 0.06 | 0.21 | 0.01 | 0.12 | 1.52 | 0.37 | 0.00 | r | 0.03 | 0.11 | 2.94 | a | |||||||||||
1978 | 2.39 | 1.23 | 1.29 | 0.88 | 0.11 | 0.00 | 0.06 | 0.00 | 0.00 | 0.79 | 0.75 | 1.26 | 8.76 | |||||||||||||
1979 | 1.09 | 0.23 | 1.34 | 0.00 | 0.03 | 0.00 | 1.38 | 0.66 | a | 0.00 | 0.07 | 0.00 | 0.00 | 4.80 | ||||||||||||
1980 | 2.15 | 1.21 | 0.88 | 0.76 | 0.02 | 0.01 | 1.55 | 0.00 | 0.32 | 0.05 | 0.00 | 0.04 | 6.99 | |||||||||||||
1981 | 0.04 | 0.22 | 0.92 | 0.00 | 0.18 | 0.01 | 0.11 | 0.28 | 0.68 | 0.63 | 0.44 | 0.00 | 3.51 | |||||||||||||
1982 | 0.22 | a | 0.83 | 0.88 | 0.03 | 0.38 | 0.00 | 0.38 | b | 3.37 | c | 0.10 | a | 0.09 | 0.62 | 0.99 | c | 7.89 | ||||||||
1983 | 0.16 | a | 0.91 | 1.89 | 0.19 | a | 0.00 | 0.00 | 0.04 | 3.33 | b | 0.54 | 1.14 | 0.07 | c | 0.42 | 8.69 | |||||||||
1984 | 0.00 | 0.00 | 0.00 | 0.02 | b | 0.00 | 0.00 | 0.59 | 1.60 | 0.38 | 0.00 | 0.64 | 2.60 | 5.83 | ||||||||||||
1985 | 1.23 | 0.16 | 0.33 | 0.09 | 0.00 | 0.00 | 0.12 | 0.00 | 0.44 | 0.26 | 1.22 | 0.14 | 3.99 | |||||||||||||
1986 | 0.30 | 0.58 | 0.58 | 0.25 | 0.00 | 0.00 | c | 0.12 | c | 1.48 | b | 0.10 | h | 0.59 | j | 0.62 | h | 1.14 | i | 3.31 | d | |||||
1987 | 0.20 | j | 0.04 | h | 0.02 | i | 0.02 | j | 0.02 | h | 0.07 | h | 0.00 | 0.00 | j | 0.26 | b | 0.65 | b | 1.53 | 0.10 | j | 2.44 | h | ||
1988 | 0.51 | 0.94 | 0.03 | 2.34 | 0.00 | 0.03 | 0.26 | 1.94 | 0.09 | 0.02 | 0.15 | 0.00 | 6.31 | |||||||||||||
1989 | 1.07 | 0.00 | 0.00 | 0.00 | 0.02 | 0.00 | 0.07 | 0.20 | 0.04 | 0.30 | 0.00 | 0.09 | 1.79 | |||||||||||||
1990 | 0.92 | 0.12 | 0.10 | 0.24 | 0.73 | 0.00 | 0.84 | 0.28 | 1.70 | 0.10 | 0.03 | 0.00 | 5.06 | |||||||||||||
1991 | 1.35 | 0.34 | 2.12 | 0.00 | 0.00 | 0.10 | 0.00 | 0.00 | 0.54 | 0.00 | 0.40 | 0.87 | 5.72 | |||||||||||||
1992 | 0.71 | a | 1.76 | 3.19 | 0.02 | 0.75 | 0.00 | 0.00 | 0.80 | 0.02 | 0.59 | 0.00 | 1.57 | 9.41 | ||||||||||||
1993 | 3.64 | 2.54 | 0.43 | 0.00 | 0.09 | 0.01 | 0.00 | 0.16 | 0.00 | 0.00 | 0.34 | 0.01 | 7.22 | |||||||||||||
1994 | 0.15 | 0.29 | 1.42 | 0.00 | 0.15 | 0.00 | 0.09 | 0.09 | 0.00 | 0.16 | 0.38 | 1.81 | 4.54 | |||||||||||||
1995 | 2.34 | 0.23 | 0.44 | 0.35 | 0.13 | 0.00 | 0.00 | 0.19 | 0.03 | 0.00 | 0.00 | 0.00 | 3.71 | |||||||||||||
1996 | 0.01 | 0.22 | 0.04 | 0.00 | 0.15 | 0.00 | 0.46 | 0.03 | 0.92 | 0.12 | 0.52 | 0.01 | 2.48 | |||||||||||||
1997 | 0.53 | 0.10 | 0.00 | 0.05 | 0.00 | 0.06 | 0.04 | 0.33 | 1.61 | 0.10 | 0.32 | 0.29 | 3.43 | |||||||||||||
1998 | 0.38 | 3.60 | 0.46 | 0.12 | 0.05 | 0.00 | 0.29 | 0.06 | 2.63 | 0.10 | 0.28 | 0.00 | 7.97 | |||||||||||||
1999 | 0.02 | 0.44 | 0.00 | 0.49 | 0.00 | 0.01 | 0.77 | 0.13 | 0.43 | 0.00 | 0.00 | 0.00 | 2.29 | |||||||||||||
2000 | 0.00 | 0.32 | 1.21 | 0.00 | 0.00 | 0.48 | 0.00 | 0.21 | 0.02 | 0.64 | 0.00 | 0.00 | 2.88 | |||||||||||||
2001 | 1.59 | 0.99 | 1.21 | 0.15 | 0.00 | 0.00 | 0.12 | 0.29 | 0.00 | 0.00 | 0.09 | 0.22 | 4.66 | |||||||||||||
2002 | 0.03 | 0.00 | 0.02 | 0.04 | 0.00 | 0.00 | 0.02 | 0.00 | 0.08 | 0.25 | 0.48 | 0.00 | 0.92 | |||||||||||||
2003 | 0.30 | 1.97 | 0.81 | 0.17 | 0.01 | 0.00 | 0.02 | 0.58 | 0.27 | 0.00 | 0.37 | 0.06 | 4.56 | |||||||||||||
2004 | 0.00 | 1.52 | 0.06 | 1.04 | 0.00 | 0.00 | 0.00 | 0.40 | 0.08 | 1.33 | 1.39 | 0.51 | 6.33 | |||||||||||||
2005 | 1.84 | 2.38 | 0.15 | 0.00 | 0.00 | 0.00 | 0.00 | 0.67 | b | 0.00 | 0.00 | 0.03 | 0.00 | 5.07 | ||||||||||||
2006 | 0.00 | 0.00 | 0.12 | 0.02 | 0.00 | 0.14 | 0.15 | 0.00 | 0.04 | 0.18 | 0.00 | 0.05 | 0.70 | |||||||||||||
2007 | 0.17 | 0.02 | 0.05 | 0.06 | 0.00 | 0.00 | 0.02 | 0.00 | 0.25 | 0.00 | 0.73 | 0.31 | 1.61 | |||||||||||||
2008 | 1.10 | 0.49 | 0.02 | 0.00 | 0.00 | 0.00 | 0.49 | 1.70 | a | 0.03 | 0.00 | 0.86 | 1.12 | 5.81 | ||||||||||||
2009 | 0.06 | 0.93 | 0.00 | 0.00 | 0.01 | 0.00 | 0.00 | a | 0.40 | 0.00 | 0.00 | 0.10 | 0.76 | 2.26 | ||||||||||||
2010 | 2.70 | 0.75 | 0.63 | 0.00 | 0.00 | 0.12 | 0.00 | 0.08 | 0.01 | 0.46 | 0.00 | 1.21 | 5.96 | |||||||||||||
2011 | 0.00 | 0.72 | 0.08 | 0.09 | 0.45 | 0.00 | 0.17 | 0.04 | 1.10 | 0.39 | 0.31 | 0.29 | 3.64 | |||||||||||||
2012 | 0.00 | 0.09 | 0.11 | 0.42 | 0.00 | 0.00 | 1.37 | 0.32 | 0.21 | 0.72 | 0.00 | 0.99 | 4.23 | |||||||||||||
2013 | 0.46 | 0.08 | 0.25 | 0.00 | 0.00 | 0.00 | 0.18 | 2.84 | 0.26 | 0.03 | 0.91 | 0.01 | 5.02 | |||||||||||||
2014 | 0.00 | 0.08 | 0.00 | 0.01 | 0.00 | 0.00 | 1.73 | 2.70 | 0.87 | 0.10 | 0.00 | 0.39 | 5.88 | |||||||||||||
2015 | 0.67 | 0.45 | 0.79 | 0.00 | 0.04 | 0.21 | 1.07 | 0.00 | 0.00 | 0.69 | 0.00 | 0.08 | 4.00 | |||||||||||||
2016 | 0.59 | 0.01 | 0.03 | 1.59 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 | 1.03 | 3.27 | |||||||||||||
2017 | 0.96 | 0.95 | 0.06 | 0.00 | 0.18 | 0.00 | 0.00 | 0.16 | 0.26 | 0.00 | 0.00 | 0.00 | 2.57 | |||||||||||||
2018 | 0.41 | 0.20 | 0.23 | 0.00 | 0.00 | 0.00 | 0.93 | 0.17 | 0.00 | 0.58 | 0.04 | 0.41 | 2.97 | |||||||||||||
2019 | 1.37 | 1.73 | 0.55 | 0.32 | 0.19 | 0.00 | 0.00 | 0.05 | 0.55 | 0.00 | 2.69 | 1.03 | 8.48 | |||||||||||||
2020 | 0.00 | 0.35 | 2.36 | 0.43 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.03 | 0.00 | 3.17 | |||||||||||||
2021 | 0.05 | 0.01 | 0.05 | 0.00 | 0.00 | 0.16 | 0.12 | 0.49 | 0.00 | 0.00 | 0.00 | 0.39 | 1.27 | |||||||||||||
2022 | 0.00 | 0.00 | 0.06 | 0.00 | 0.00 | a | 0.03 | 0.57 | 1.64 | 0.00 | 0.12 | 0.35 | 0.03 | 2.80 | ||||||||||||
2023 | 0.85 | 0.25 | 1.95 | 0.00 | 0.06 | 0.09 | 0.00 | 1.09 | 0.66 | 0.00 | 0.02 | 0.06 | 5.03 | |||||||||||||
2024 | 0.43 | 0.93 | 0.28 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.64 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.60 | 0.52 | 0.50 | 0.23 | 0.07 | 0.03 | 0.32 | 0.67 | 0.39 | 0.29 | 0.35 | 0.47 | 4.41 | |||||||||||||
S.D. | 0.84 | 0.68 | 0.69 | 0.51 | 0.16 | 0.08 | 0.49 | 0.94 | 0.70 | 0.38 | 0.48 | 0.64 | 2.26 | |||||||||||||
SKEW | 2.09 | 2.02 | 1.78 | 3.37 | 2.92 | 4.11 | 1.83 | 1.80 | 3.68 | 1.54 | 2.18 | 1.93 | 0.69 | |||||||||||||
MAX | 4.19 | 3.60 | 3.19 | 2.81 | 0.75 | 0.48 | 2.21 | 4.20 | 4.72 | 1.65 | 2.69 | 2.94 | 10.96 | |||||||||||||
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 | 0.70 | |||||||||||||
YRS | 83 | 83 | 83 | 83 | 83 | 83 | 84 | 83 | 83 | 82 | 83 | 82 | 80 |