YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 2.45 | 1.16 | a | 3.61 | j | |
1941 | 0.29 | 0.28 | 2.27 | 0.99 | 4.85 | 2.77 | 2.83 | 3.35 | 6.52 | 3.34 | 0.09 | 0.63 | 28.21 | |||||||||||||
1942 | 0.01 | 0.26 | 0.14 | 3.63 | 0.00 | 1.25 | 1.26 | 5.35 | 5.11 | 2.20 | 0.00 | 0.81 | 20.02 | |||||||||||||
1943 | 0.03 | 0.02 | 0.15 | 0.29 | 1.15 | 0.40 | 2.85 | 1.91 | 0.65 | 0.56 | 0.85 | 2.02 | 10.88 | |||||||||||||
1944 | 0.66 | 0.27 | a | 0.23 | 1.83 | 1.41 | 1.62 | 2.13 | 0.89 | 0.98 | 2.29 | 0.67 | 1.19 | 14.17 | ||||||||||||
1945 | 0.51 | 0.02 | 0.09 | 0.68 | 1.11 | 1.80 | 2.32 | 3.60 | 1.27 | 0.55 | 0.00 | 0.00 | 11.95 | |||||||||||||
1946 | 0.15 | 1.11 | 2.51 | 0.85 | 0.47 | 0.66 | 2.48 | 5.05 | 2.12 | 1.97 | 0.90 | 0.01 | 18.28 | |||||||||||||
1947 | 0.11 | 0.09 | 0.31 | 0.80 | 1.79 | 0.79 | 1.34 | 1.52 | 0.18 | 1.22 | 0.53 | 0.90 | 9.58 | |||||||||||||
1948 | 1.06 | 2.15 | 0.85 | 0.04 | 3.04 | 6.61 | 2.20 | 1.70 | 0.14 | 1.32 | 0.08 | 0.24 | 19.43 | |||||||||||||
1949 | 1.15 | 0.44 | 0.28 | 0.93 | 1.21 | 3.78 | 4.41 | 0.50 | 4.16 | 0.25 | 0.00 | 0.15 | 17.26 | |||||||||||||
1950 | 0.02 | 0.02 | 0.05 | 0.54 | 0.50 | 2.34 | 3.30 | 2.28 | 1.35 | 0.12 | 0.02 | 0.00 | 10.54 | |||||||||||||
1951 | 0.33 | 0.47 | 0.21 | 0.31 | 1.68 | 1.20 | 4.46 | 5.61 | 0.13 | 0.06 | 0.41 | 0.21 | 15.08 | |||||||||||||
1952 | 0.30 | 0.69 | 0.37 | 1.10 | 1.91 | 0.19 | 2.40 | 6.31 | 1.60 | 0.00 | 0.43 | 0.31 | 15.61 | |||||||||||||
1953 | 0.00 | 0.42 | 0.40 | 0.20 | 1.33 | 1.06 | 1.44 | 2.23 | 0.26 | 1.40 | 1.74 | 0.92 | 11.40 | |||||||||||||
1954 | 0.43 | 0.00 | 0.02 | 0.05 | 1.35 | 1.14 | 2.99 | 3.62 | 1.10 | 3.40 | 0.12 | 0.30 | 14.52 | |||||||||||||
1955 | 0.11 | 0.16 | 0.14 | 0.27 | 3.89 | 0.79 | 4.02 | 3.75 | 2.02 | 0.97 | 0.00 | 0.14 | 16.26 | |||||||||||||
1956 | 0.18 | 0.33 | 0.09 | 0.00 | 1.05 | 0.50 | 1.16 | 1.60 | 0.00 | 0.10 | 0.20 | 0.20 | 5.41 | |||||||||||||
1957 | 0.57 | 0.08 | 1.04 | 1.30 | 0.94 | 0.43 | 3.71 | 5.04 | 0.02 | 4.34 | 1.85 | 0.00 | 19.32 | |||||||||||||
1958 | 0.43 | 0.25 | 1.60 | 2.18 | 0.97 | 0.71 | 1.61 | 3.51 | 1.88 | 0.91 | 0.14 | 0.38 | 14.57 | |||||||||||||
1959 | 0.42 | 0.14 | 0.05 | 0.58 | 5.10 | 1.82 | 2.94 | 4.40 | 0.44 | 2.19 | 0.01 | 1.88 | 19.97 | |||||||||||||
1960 | 0.49 | 0.27 | 0.64 | 0.00 | 0.41 | 2.92 | 3.08 | 1.21 | 1.21 | 4.07 | 0.00 | 0.90 | 15.20 | |||||||||||||
1961 | 0.06 | 0.03 | 0.72 | 0.86 | 0.97 | 2.22 | 1.72 | 8.31 | 1.42 | 0.36 | 0.16 | 0.54 | 17.37 | |||||||||||||
1962 | 0.10 | 0.45 | 0.23 | 0.13 | 0.16 | 1.77 | 3.46 | 2.39 | 2.51 | 0.45 | 0.67 | 0.27 | 12.59 | |||||||||||||
1963 | 0.30 | 0.69 | 0.21 | 0.09 | 1.50 | 1.52 | 2.26 | 4.22 | 1.90 | 0.10 | 0.04 | 0.09 | 12.92 | |||||||||||||
1964 | 0.20 | 0.35 | 0.24 | 0.57 | 0.28 | 0.56 | 0.75 | 2.17 | 3.34 | 0.09 | 0.34 | 0.07 | 8.96 | |||||||||||||
1965 | 0.25 | 0.21 | 0.47 | 0.98 | 2.86 | 2.96 | 3.74 | 5.77 | 2.06 | 0.33 | 0.06 | 1.12 | 20.81 | |||||||||||||
1966 | 0.18 | 0.34 | 0.00 | 0.14 | 1.16 | 2.31 | 2.08 | 5.42 | 0.52 | 0.47 | 0.01 | 0.29 | 12.92 | |||||||||||||
1967 | 0.03 | 0.12 | 0.03 | 0.09 | 0.42 | 2.05 | 5.50 | 4.96 | 0.82 | 0.12 | 0.19 | 0.91 | 15.24 | |||||||||||||
1968 | 0.01 | 0.27 | 0.28 | 0.56 | 0.88 | 0.63 | 6.41 | 3.57 | 0.00 | 0.16 | 0.64 | 0.22 | 13.63 | |||||||||||||
1969 | 0.04 | 0.63 | 0.67 | 2.10 | 2.07 | 2.67 | 3.56 | 4.04 | 2.55 | 2.69 | 0.09 | 0.50 | 21.61 | |||||||||||||
1970 | 0.05 | 0.20 | 0.43 | 0.37 | 1.01 | 0.34 | 6.20 | 1.56 | 3.58 | 0.51 | 0.16 | 0.05 | 14.46 | |||||||||||||
1971 | 0.25 | 0.11 | 0.28 | 0.16 | 0.35 | 1.12 | 6.46 | 1.26 | 1.54 | 1.64 | 1.43 | 0.79 | 15.39 | |||||||||||||
1972 | 0.07 | 0.02 | 0.02 | 0.00 | 2.74 | 1.80 | 7.97 | 4.45 | 1.82 | 3.50 | 0.60 | 0.20 | 23.19 | |||||||||||||
1973 | 0.46 | 0.53 | 2.34 | 0.65 | 1.78 | 0.51 | 2.20 | 2.40 | 2.16 | 0.66 | 0.22 | 0.27 | 14.18 | |||||||||||||
1974 | 0.55 | 0.04 | 0.40 | 0.66 | 0.14 | 0.46 | 1.51 | 2.71 | 1.10 | 3.13 | 0.62 | 0.57 | 11.89 | |||||||||||||
1975 | 0.57 | 0.28 | 0.44 | 1.00 | 2.49 | 1.08 | 4.27 | 1.50 | 3.09 | 0.00 | 1.19 | 0.18 | 16.09 | |||||||||||||
1976 | 0.22 | 0.27 | 0.10 | 0.73 | 1.11 | 0.72 | 3.57 | 3.01 | 1.04 | 0.51 | 0.12 | 0.00 | 11.40 | |||||||||||||
1977 | 0.42 | 0.07 | 0.27 | 3.58 | 1.35 | 1.41 | 1.65 | 3.61 | 1.19 | 0.52 | 2.13 | 0.00 | 16.20 | |||||||||||||
1978 | 0.06 | 0.13 | 0.76 | 0.06 | 1.61 | 2.79 | 2.50 | 2.84 | 2.18 | 0.47 | 3.86 | 1.07 | 18.33 | |||||||||||||
1979 | 0.53 | 0.04 | 0.18 | 0.74 | 3.68 | 2.72 | 2.55 | 2.76 | 0.77 | 0.02 | 0.31 | 0.25 | 14.55 | |||||||||||||
1980 | 0.35 | 0.08 | 1.23 | 1.50 | 1.91 | 0.15 | 0.57 | 0.86 | 3.60 | 0.03 | 0.36 | 0.02 | 10.66 | |||||||||||||
1981 | 0.02 | 0.51 | 0.80 | 0.84 | 1.87 | 2.58 | 3.92 | 7.95 | 1.35 | 1.36 | 0.64 | 0.00 | 21.84 | |||||||||||||
1982 | 0.31 | 0.42 | 0.37 | 0.30 | 1.06 | 2.55 | 3.37 | 3.84 | 4.35 | 1.58 | 0.75 | 0.61 | 19.51 | |||||||||||||
1983 | 0.50 | 1.46 | 0.79 | 0.39 | 2.52 | a | 2.03 | 1.99 | 1.65 | 0.85 | 1.28 | 0.04 | 1.00 | 14.50 | ||||||||||||
1984 | 0.45 | 0.15 | 0.81 | 0.48 | 1.80 | 4.80 | 1.71 | 3.96 | 1.73 | 3.14 | 0.27 | 2.12 | 21.42 | |||||||||||||
1985 | 0.79 | 0.01 | 3.58 | 4.88 | 3.10 | 3.39 | 2.38 | 3.10 | 3.57 | 2.84 | 0.07 | 0.08 | 27.79 | |||||||||||||
1986 | 0.13 | 1.82 | 0.19 | 0.39 | 3.28 | 3.83 | 1.79 | 3.11 | 3.53 | 1.85 | 2.47 | 0.48 | 22.87 | |||||||||||||
1987 | 0.77 | 1.12 | 0.46 | 0.56 | 3.94 | 3.03 | 1.40 | 7.55 | 2.02 | 0.05 | 1.06 | 0.66 | 22.62 | |||||||||||||
1988 | 0.21 | 0.08 | 0.32 | 1.53 | 2.48 | 3.05 | 6.27 | 5.32 | 2.65 | 0.27 | 0.16 | 0.19 | a | 22.53 | ||||||||||||
1989 | 0.53 | 0.16 | 0.11 | 0.20 | 1.38 | 2.06 | 4.22 | 2.57 | 2.06 | 0.92 | 0.00 | 0.21 | 14.42 | |||||||||||||
1990 | 1.28 | 1.02 | 0.17 | 1.79 | 0.65 | 0.40 | 3.93 | 4.58 | 2.83 | 0.15 | 1.36 | 1.35 | 19.51 | |||||||||||||
1991 | 0.13 | a | 0.48 | 1.28 | 0.07 | b | 2.96 | 2.07 | 3.04 | d | 3.46 | b | 2.34 | a | 0.24 | b | 1.36 | b | 1.33 | 18.76 | ||||||
1992 | 0.44 | b | 0.12 | 0.64 | 0.18 | 1.72 | 2.61 | 2.18 | 3.91 | 0.41 | 0.11 | 0.12 | 1.07 | 13.51 | ||||||||||||
1993 | 0.83 | 0.73 | 0.95 | 0.43 | 2.16 | 1.11 | 5.15 | 6.05 | 1.14 | 0.37 | 0.51 | 0.09 | a | 19.52 | ||||||||||||
1994 | 0.28 | 0.00 | 1.31 | 1.68 | 3.80 | 2.55 | 3.16 | 3.27 | 1.89 | 2.24 | 1.79 | 0.40 | 22.37 | |||||||||||||
1995 | 0.36 | 0.05 | 1.07 | 1.51 | 1.26 | 4.06 | 2.20 | 3.86 | 2.71 | 0.00 | 0.08 | 0.38 | 17.54 | |||||||||||||
1996 | 0.14 | 0.10 | 0.23 | 0.01 | 0.01 | 4.54 | 4.89 | 4.61 | 2.03 | 1.97 | a | 0.40 | 0.13 | 19.06 | ||||||||||||
1997 | 0.53 | 1.02 | 0.11 | 1.53 | 1.05 | 2.69 | 3.74 | 2.72 | 5.59 | 0.32 | 0.70 | 1.68 | 21.68 | |||||||||||||
1998 | 0.00 | 0.11 | 1.92 | 1.16 | 0.00 | 0.02 | a | 5.05 | 2.99 | 0.52 | 4.47 | 0.32 | 0.15 | 16.71 | ||||||||||||
1999 | 0.13 | 0.00 | 0.77 | 1.66 | 2.87 | 2.53 | 1.54 | 6.97 | 3.22 | 0.74 | 0.05 | 0.13 | 20.61 | |||||||||||||
2000 | 0.11 | 0.00 | 1.23 | c | 1.20 | 0.20 | 2.40 | 3.63 | 1.70 | 0.42 | 4.60 | 0.63 | 0.22 | 16.34 | ||||||||||||
2001 | 0.77 | 0.85 | 1.23 | 0.21 | 0.89 | 2.08 | 1.38 | 2.02 | 0.44 | 0.32 | 1.15 | a | 0.11 | 11.45 | ||||||||||||
2002 | 0.35 | 0.01 | 0.00 | 0.20 | 0.25 | 0.67 | 3.31 | 0.40 | 3.05 | 1.74 | 0.13 | 0.44 | 10.55 | |||||||||||||
2003 | 0.00 | 0.66 | 0.41 | 0.03 | 1.06 | 0.90 | 0.22 | 1.16 | 1.31 | 0.49 | 0.80 | 0.01 | 7.05 | |||||||||||||
2004 | 0.06 | 0.32 | 0.38 | 1.91 | 0.07 | 1.58 | 2.75 | 3.28 | 2.27 | 2.51 | a | 1.48 | 0.18 | 16.79 | ||||||||||||
2005 | 1.26 | 0.43 | 1.19 | 1.03 | 2.50 | 1.27 | 1.03 | 3.03 | 3.54 | a | 0.82 | 0.00 | a | 0.00 | 16.10 | |||||||||||
2006 | 0.03 | 0.00 | 0.09 | 0.02 | a | 1.25 | 1.58 | 1.75 | 6.30 | 0.93 | 1.63 | 0.07 | 0.81 | 14.46 | ||||||||||||
2007 | 0.48 | 0.06 | 0.49 | 0.35 | 2.38 | 2.55 | 4.28 | 1.56 | 3.36 | 0.12 | 0.51 | 0.89 | 17.03 | |||||||||||||
2008 | 0.12 | 0.55 | 0.23 | 0.36 | 1.57 | 1.00 | 4.15 | 5.15 | 0.56 | 1.03 | 0.55 | 0.34 | 15.61 | |||||||||||||
2009 | 0.15 | 0.06 | 0.21 | 0.66 | 1.07 | 1.34 | 4.34 | 0.83 | 1.91 | 1.25 | 0.13 | 0.29 | 12.24 | |||||||||||||
2010 | 0.09 | 0.69 | 0.95 | 0.32 | 0.86 | 1.43 | 3.39 | 1.25 | 2.49 | 2.13 | 0.01 | 0.76 | 14.37 | |||||||||||||
2011 | 0.16 | 0.13 | 0.03 | 0.00 | 0.15 | 0.90 | 1.31 | 2.68 | 1.71 | 1.07 | 0.04 | 0.75 | 8.93 | |||||||||||||
2012 | 0.07 | 0.14 | a | 0.25 | 0.53 | 1.10 | 0.82 | 1.60 | 1.68 | 0.84 | 0.36 | 0.03 | 0.20 | 7.62 | ||||||||||||
2013 | 0.08 | 0.23 | 0.06 | 0.08 | 0.22 | 1.29 | 4.39 | 1.55 | 7.31 | 0.29 | 0.65 | a | 0.29 | 16.44 | ||||||||||||
2014 | 0.00 | 0.05 | 0.01 | 0.54 | 1.16 | 0.55 | 4.93 | 1.87 | 1.95 | 0.32 | 0.64 | 0.62 | 12.64 | |||||||||||||
2015 | 0.70 | 1.08 | a | 1.21 | 0.57 | 4.43 | 3.95 | a | 3.29 | 2.60 | 0.50 | 4.28 | 0.56 | 0.37 | 23.54 | |||||||||||
2016 | 0.21 | 0.29 | 0.19 | 1.38 | 1.69 | 0.61 | 0.87 | 4.86 | 1.35 | 0.10 | a | 1.35 | 0.46 | 13.36 | ||||||||||||
2017 | 1.73 | 0.37 | 0.18 | 0.66 | 1.44 | 2.21 | 3.00 | 6.30 | 6.28 | 0.75 | a | 0.26 | 0.01 | 23.19 | ||||||||||||
2018 | 0.00 | 0.19 | 0.20 | 0.29 | b | 0.11 | 0.27 | 6.50 | 3.25 | 2.69 | 3.33 | 0.10 | 0.72 | 17.65 | ||||||||||||
2019 | 0.33 | 0.04 | 1.08 | 1.59 | 1.04 | 0.75 | 4.23 | 1.59 | 1.15 | 0.86 | 0.69 | 0.44 | 13.79 | |||||||||||||
2020 | 0.06 | 0.11 | 1.02 | a | 0.03 | 0.19 | 0.51 | 4.09 | 0.75 | 0.62 | 0.28 | 0.10 | 0.00 | 7.76 | ||||||||||||
2021 | 0.01 | 0.07 | 0.19 | a | 0.13 | 2.24 | 1.74 | a | 1.86 | 1.64 | 1.72 | 1.23 | 0.26 | 0.00 | 11.09 | |||||||||||
2022 | 0.12 | 0.00 | 0.19 | 0.00 | 0.28 | 2.64 | 2.96 | 1.47 | 0.65 | 3.25 | 0.03 | 0.00 | 11.59 | |||||||||||||
2023 | 0.19 | 0.06 | 0.51 | 0.11 | 1.76 | 1.39 | 0.80 | 1.33 | 1.72 | 0.94 | 0.13 | 0.49 | 9.43 | |||||||||||||
2024 | 0.02 | 0.10 | 1.04 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.16 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.32 | 0.34 | 0.59 | 0.76 | 1.55 | 1.77 | 3.06 | 3.26 | 1.95 | 1.26 | 0.55 | 0.48 | 15.85 | |||||||||||||
S.D. | 0.33 | 0.41 | 0.64 | 0.86 | 1.18 | 1.22 | 1.58 | 1.83 | 1.51 | 1.27 | 0.69 | 0.49 | 4.68 | |||||||||||||
SKEW | 1.76 | 2.18 | 2.10 | 2.28 | 0.97 | 1.12 | 0.68 | 0.69 | 1.34 | 1.09 | 2.16 | 1.41 | 0.25 | |||||||||||||
MAX | 1.73 | 2.15 | 3.58 | 4.88 | 5.10 | 6.61 | 7.97 | 8.31 | 7.31 | 4.60 | 3.86 | 2.12 | 28.21 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.02 | 0.22 | 0.40 | 0.00 | 0.00 | 0.00 | 0.00 | 5.41 | |||||||||||||
YRS | 84 | 84 | 84 | 83 | 83 | 83 | 83 | 83 | 83 | 83 | 84 | 84 | 83 |