YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | i | 0.00 | l |
1949 | 1.09 | 1.01 | 0.82 | 2.73 | 6.42 | 3.57 | 5.31 | 0.55 | 0.58 | 0.08 | 0.02 | 0.42 | 22.60 | |||||||||||||
1950 | 0.03 | 0.01 | 0.02 | 0.61 | 1.39 | 4.22 | 5.90 | 1.46 | 4.28 | 0.40 | 0.03 | 0.16 | 18.51 | |||||||||||||
1951 | 0.90 | 0.43 | 0.41 | 0.24 | 2.71 | 1.31 | 4.96 | 0.90 | 0.28 | 0.59 | 0.17 | 0.14 | 13.04 | |||||||||||||
1952 | 0.19 | 0.38 | 0.94 | 3.23 | 2.23 | 0.20 | 1.53 | 3.22 | 0.31 | 0.00 | 0.87 | 0.61 | 13.71 | |||||||||||||
1953 | 0.00 | 0.33 | 0.46 | 0.04 | 1.36 | 0.28 | 1.88 | 4.25 | 0.28 | 5.10 | 0.66 | 0.20 | 14.84 | |||||||||||||
1954 | 0.73 | 1.09 | 0.60 | 0.49 | 4.01 | 0.75 | 1.06 | 1.16 | 0.71 | 1.78 | 0.04 | 0.06 | 12.48 | |||||||||||||
1955 | 0.06 | 0.14 | 0.05 | 1.95 | 3.39 | 0.65 | 0.97 | 0.03 | 1.02 | 0.00 | 0.09 | 0.02 | 8.37 | |||||||||||||
1956 | 0.08 | 0.07 | 0.07 | 0.42 | 3.27 | 1.06 | 1.55 | 3.40 | 0.08 | 0.17 | 0.00 | 0.00 | 10.17 | |||||||||||||
1957 | 0.57 | 0.14 | 2.76 | 1.11 | 3.16 | 1.47 | 0.50 | 1.68 | 0.02 | 1.89 | 0.76 | 0.00 | 14.06 | |||||||||||||
1958 | 0.72 | 0.60 | 2.18 | 1.89 | 3.91 | 0.55 | 8.57 | 0.19 | 1.03 | 0.23 | 0.47 | 0.29 | 20.63 | |||||||||||||
1959 | 0.37 | 0.06 | 0.28 | 0.34 | 3.35 | 1.98 | 1.12 | 5.81 | 0.85 | 1.54 | 0.22 | 1.95 | 17.87 | |||||||||||||
1960 | 1.08 | 1.32 | 0.56 | 0.52 | 0.26 | 4.41 | 4.52 | 0.91 | 3.77 | 5.96 | 0.00 | 1.24 | 24.55 | |||||||||||||
1961 | 0.03 | 0.43 | 2.92 | 0.65 | 1.00 | 2.34 | 3.25 | 2.33 | 2.75 | 1.53 | 1.01 | 0.24 | 18.48 | |||||||||||||
1962 | 0.46 | 0.07 | 0.66 | 0.40 | 1.32 | 5.36 | 5.76 | 0.23 | 1.27 | 0.10 | 0.29 | 0.20 | 16.12 | |||||||||||||
1963 | 0.27 | 0.37 | 0.00 | 0.04 | 3.63 | 2.78 | 3.22 | 3.83 | 0.24 | 0.83 | 0.00 | 0.24 | 15.45 | |||||||||||||
1964 | 0.00 | 1.00 | 0.00 | 0.14 | 1.70 | 1.08 | 1.51 | 0.59 | 2.90 | 0.21 | 1.16 | 0.69 | 10.98 | |||||||||||||
1965 | 0.00 | 0.43 | 0.66 | 0.18 | 2.80 | 4.83 | 2.26 | 3.50 | 1.42 | 1.12 | 0.00 | 0.97 | 18.17 | |||||||||||||
1966 | 0.44 | 1.39 | 0.00 | 0.00 | 0.75 | 2.24 | 5.38 | 2.93 | 1.09 | 0.14 | 0.00 | 0.48 | 14.84 | |||||||||||||
1967 | 0.06 | 0.18 | 0.00 | 2.13 | 2.81 | 3.06 | 4.84 | 2.76 | 1.21 | 0.13 | 0.05 | 0.46 | 17.69 | |||||||||||||
1968 | 0.87 | 0.24 | 0.58 | 1.10 | 3.18 | 2.29 | 2.90 | 1.99 | 0.99 | 0.36 | 1.26 | 0.12 | 15.88 | |||||||||||||
1969 | 0.00 | 1.11 | 1.65 | 0.44 | 3.88 | 3.19 | 2.75 | 4.25 | 3.20 | 1.78 | 0.25 | 0.38 | 22.88 | |||||||||||||
1970 | 0.00 | 0.00 | 0.29 | 1.87 | 0.85 | 2.05 | 3.90 | 2.59 | 1.64 | 1.16 | 0.36 | 0.00 | 14.71 | |||||||||||||
1971 | 0.16 | 0.36 | 0.16 | 1.85 | 2.91 | 3.74 | 2.28 | 0.60 | 2.27 | 2.05 | 3.19 | 0.78 | 20.35 | |||||||||||||
1972 | 0.00 | 0.03 | 0.00 | 0.48 | 4.82 | 2.95 | 7.52 | 2.62 | 3.30 | 1.28 | 1.80 | 0.18 | 24.98 | |||||||||||||
1973 | 0.32 | 0.35 | 2.97 | 2.22 | 0.36 | 0.18 | 2.59 | 1.60 | 1.34 | 0.40 | 0.03 | 0.43 | 12.79 | |||||||||||||
1974 | 0.41 | 0.02 | 0.73 | 1.04 | 0.20 | 1.58 | 1.67 | 5.59 | 1.29 | 2.74 | 0.22 | 0.36 | 15.85 | |||||||||||||
1975 | 0.95 | 0.66 | 0.25 | 1.22 | 2.02 | 4.90 | 1.79 | 2.08 | 1.24 | 0.03 | 0.49 | 0.33 | 15.96 | |||||||||||||
1976 | 0.16 | 0.02 | 0.46 | 2.17 | 2.78 | 1.31 | 1.57 | 2.87 | 1.77 | 0.20 | 0.14 | 0.00 | 13.45 | |||||||||||||
1977 | 0.61 | 0.08 | 0.13 | 3.56 | 2.13 | 0.80 | 4.66 | 6.26 | 2.18 | 0.09 | 0.20 | 0.15 | 20.85 | |||||||||||||
1978 | 0.47 | 1.77 | 0.15 | 0.16 | 4.89 | 2.51 | 0.68 | 5.36 | 0.50 | 0.65 | 2.70 | 0.27 | 20.11 | |||||||||||||
1979 | 0.68 | 0.05 | 1.50 | 2.26 | 4.74 | 3.01 | 1.62 | 2.04 | 0.74 | 0.82 | 0.27 | 0.33 | 18.06 | |||||||||||||
1980 | 0.67 | 0.36 | 0.60 | 3.15 | 3.95 | 0.41 | 2.49 | 2.54 | 0.22 | 0.62 | 0.77 | 0.28 | 16.06 | |||||||||||||
1981 | 0.00 | 0.00 | 2.27 | 0.74 | 2.82 | 1.01 | 4.87 | 9.77 | 2.07 | 0.84 | 0.29 | 0.22 | 24.90 | |||||||||||||
1982 | 0.10 | 0.21 | 0.34 | 0.54 | 2.95 | 3.90 | 8.92 | 2.33 | 1.19 | 1.83 | 0.25 | 0.69 | 23.25 | |||||||||||||
1983 | 1.73 | 1.04 | 1.06 | 0.65 | 2.54 | 0.92 | 1.25 | 0.46 | 1.15 | 1.79 | 0.35 | 0.89 | 13.83 | |||||||||||||
1984 | 0.36 | 0.04 | 1.49 | 1.71 | 1.65 | 1.88 | 0.67 | 3.35 | 0.32 | 3.89 | 0.18 | 0.80 | 16.34 | |||||||||||||
1985 | 0.28 | 1.04 | 2.79 | 1.91 | 2.41 | 1.79 | 0.78 | 5.77 | 8.38 | 2.23 | 0.65 | 0.00 | 28.03 | |||||||||||||
1986 | 0.00 | 0.83 | 0.26 | 0.55 | 1.35 | 1.62 | 1.86 | 2.50 | 1.58 | 1.92 | 2.35 | 0.29 | 15.11 | |||||||||||||
1987 | 0.45 | a | 0.60 | 0.55 | 0.47 | 4.04 | 2.35 | 0.27 | 5.12 | d | 3.42 | b | 0.20 | b | 0.71 | i | 1.75 | c | 19.22 | a | ||||||
1988 | 0.30 | c | 0.00 | 0.86 | 1.22 | f | 2.49 | e | 2.52 | d | 7.04 | b | 0.16 | b | 3.15 | 0.43 | 0.14 | 0.13 | 17.22 | a | ||||||
1989 | 0.34 | 0.33 | 0.15 | 0.34 | 3.31 | 5.10 | 3.24 | 2.79 | 1.48 | 0.13 | 0.00 | 0.57 | 17.78 | |||||||||||||
1990 | 1.16 | 0.91 | 0.78 | 0.33 | 3.49 | 0.01 | 2.28 | 2.73 | 3.44 | 0.17 | 0.98 | 0.08 | 16.36 | |||||||||||||
1991 | 0.73 | 0.00 | 1.04 | 0.12 | 5.69 | 3.29 | 4.01 | 5.01 | 1.90 | 1.68 | 1.37 | 1.87 | 26.71 | |||||||||||||
1992 | 0.58 | 0.36 | 0.92 | 0.97 | 2.02 | 3.73 | 3.60 | 2.09 | 0.16 | 0.06 | 1.25 | 0.70 | 16.44 | |||||||||||||
1993 | 1.26 | 0.71 | 2.48 | 1.78 | 3.58 | 7.00 | 3.31 | 2.14 | 0.22 | 0.51 | 0.36 | 0.44 | 23.79 | |||||||||||||
1994 | 1.09 | 0.00 | 1.45 | 1.26 | 3.27 | 1.10 | 2.46 | 3.11 | 0.10 | 1.65 | 0.69 | 0.68 | 16.86 | |||||||||||||
1995 | 0.71 | 0.14 | 0.69 | 0.85 | 4.63 | 1.44 | 3.23 | 1.68 | 0.52 | 0.23 | 0.00 | 0.58 | 14.70 | |||||||||||||
1996 | 0.15 | 0.01 | 0.18 | 0.01 | 1.48 | 2.25 | 8.62 | 3.28 | 1.78 | 1.27 | 0.95 | 0.11 | 20.09 | |||||||||||||
1997 | 0.28 | 0.32 | 0.02 | 4.52 | 1.10 | 2.50 | 2.32 | 3.28 | 0.80 | 0.57 | 0.49 | 2.23 | 18.43 | |||||||||||||
1998 | 0.01 | 1.63 | 2.69 | 0.70 | 1.72 | 0.33 | 5.32 | 2.00 | 0.06 | 5.66 | 0.38 | 0.21 | 20.71 | |||||||||||||
1999 | 1.39 | 0.04 | 1.85 | 3.43 | 2.00 | 2.14 | 1.52 | 0.58 | 0.27 | 0.67 | 0.00 | 0.74 | 14.63 | |||||||||||||
2000 | 0.29 | 0.04 | 3.71 | 0.30 | 0.47 | 1.89 | 0.91 | 0.08 | 0.00 | 4.92 | 0.07 | 0.18 | 12.86 | |||||||||||||
2001 | 0.88 | 0.43 | 1.22 | 0.20 | 3.38 | 0.88 | 0.70 | a | 2.49 | 2.56 | 0.00 | 1.67 | 0.40 | 14.81 | ||||||||||||
2002 | 0.16 | 0.14 | 0.03 | 1.44 | 0.40 | 0.88 | 0.41 | 2.27 | 1.37 | 3.11 | 0.05 | 0.48 | 10.74 | |||||||||||||
2003 | 0.00 | 0.06 | 0.94 | 1.45 | 1.66 | 4.14 | 0.56 | 0.47 | 2.76 | 0.19 | 0.64 | 0.31 | 13.18 | |||||||||||||
2004 | 0.01 | 0.17 | 0.95 | 3.51 | 0.17 | 3.74 | 2.50 | 3.25 | 4.36 | 0.41 | 2.79 | 0.15 | 22.01 | |||||||||||||
2005 | 1.11 | 0.72 | 0.85 | 1.14 | 1.20 | 1.26 | 0.46 | 3.86 | 2.08 | 0.40 | 0.28 | 0.00 | 13.36 | |||||||||||||
2006 | 0.02 | 0.00 | 1.25 | 0.28 | 0.78 | 2.56 | 2.71 | 4.49 | 1.93 | 0.82 | 0.05 | 1.75 | 16.64 | |||||||||||||
2007 | 0.37 | 0.14 | 1.73 | 0.83 | 1.35 | 1.97 | 1.93 | 2.20 | 1.68 | 0.23 | 0.13 | 0.45 | 13.01 | |||||||||||||
2008 | 0.02 | 0.24 | 0.15 | 0.10 | 1.33 | 1.72 | 3.98 | 2.01 | 0.29 | 4.93 | 0.07 | 0.30 | 15.14 | |||||||||||||
2009 | 0.00 | 0.40 | 1.19 | 0.85 | 0.22 | 2.41 | 5.39 | 0.70 | 0.28 | 2.82 | 0.05 | 0.12 | 14.43 | |||||||||||||
2010 | 2.28 | a | 1.44 | 1.22 | 0.34 | 1.67 | 2.92 | 2.39 | 2.43 | 0.25 | 0.65 | 0.00 | 0.25 | 15.84 | ||||||||||||
2011 | 0.21 | 0.26 | 0.01 | 0.10 | 0.03 | 0.21 | 0.29 | 1.65 | 0.73 | 1.52 | 0.10 | 0.93 | 6.04 | |||||||||||||
2012 | 0.02 | 0.05 | 0.35 | 1.17 | 0.21 | 1.90 | 0.12 | 2.15 | 0.36 | 0.02 | 0.00 | 0.31 | 6.66 | |||||||||||||
2013 | 0.17 | 0.63 | 0.06 | 0.00 | 0.44 | 0.63 | 1.53 | 1.56 | 1.64 | 0.12 | 0.85 | 0.21 | 7.84 | |||||||||||||
2014 | 0.01 | 0.08 | 0.09 | 0.11 | 1.55 | 3.77 | 2.15 | 0.88 | 1.55 | 1.01 | 0.15 | 0.33 | 11.68 | |||||||||||||
2015 | 1.72 | 1.59 | 0.08 | 1.30 | 2.02 | 0.85 | 4.15 | 1.72 | 1.07 | 5.30 | 1.02 | 0.41 | 21.23 | |||||||||||||
2016 | 0.11 | 0.14 | 0.16 | 4.18 | 2.36 | 2.01 | 2.07 | 2.89 | 3.42 | 0.10 | 1.17 | 0.20 | 18.81 | |||||||||||||
2017 | 1.03 | 0.05 | 1.42 | 5.25 | 1.39 | 1.26 | 3.01 | 3.83 | 3.01 | 4.03 | 0.13 | 0.00 | 24.41 | |||||||||||||
2018 | 0.01 | 0.00 | 0.00 | 0.73 | 1.07 | 3.12 | 0.62 | 1.23 | 0.26 | 4.31 | 0.14 | 1.12 | 12.61 | |||||||||||||
2019 | 0.08 | 0.00 | c | 0.70 | 0.36 | 2.62 | 4.23 | 0.62 | 1.13 | 2.04 | 1.08 | 0.62 | 0.69 | 14.17 | ||||||||||||
2020 | 0.65 | 0.18 | 0.58 | 0.17 | 0.93 | 1.05 | 3.63 | 0.39 | 1.19 | 0.78 | 0.54 | 0.27 | 10.36 | |||||||||||||
2021 | 0.14 | a | 0.06 | 1.30 | 0.02 | 2.19 | 2.19 | a | 3.91 | 0.55 | 1.02 | a | 0.27 | 0.00 | 0.00 | 11.65 | ||||||||||
2022 | 0.04 | 0.03 | 0.08 | 0.46 | 2.22 | a | 0.68 | 4.35 | 0.81 | 0.45 | 1.22 | 0.08 | 0.03 | 10.45 | ||||||||||||
2023 | 0.17 | 0.36 | 0.38 | 1.65 | 6.62 | 4.96 | 1.91 | 2.01 | 0.66 | 1.30 | 0.16 | 1.67 | 21.85 | |||||||||||||
2024 | 0.58 | 0.15 | a | 0.19 | 0.78 | h | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.92 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.44 | 0.40 | 0.83 | 1.15 | 2.33 | 2.23 | 2.89 | 2.44 | 1.49 | 1.32 | 0.53 | 0.47 | 16.47 | |||||||||||||
S.D. | 0.48 | 0.45 | 0.87 | 1.18 | 1.50 | 1.48 | 2.09 | 1.75 | 1.38 | 1.54 | 0.69 | 0.50 | 4.75 | |||||||||||||
SKEW | 1.43 | 1.37 | 1.33 | 1.46 | 0.65 | 0.75 | 1.02 | 1.27 | 2.01 | 1.58 | 2.03 | 1.79 | 0.25 | |||||||||||||
MAX | 2.28 | 1.77 | 3.71 | 5.25 | 6.62 | 7.00 | 8.92 | 9.77 | 8.38 | 5.96 | 3.19 | 2.23 | 28.03 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.03 | 0.01 | 0.12 | 0.03 | 0.00 | 0.00 | 0.00 | 0.00 | 6.04 | |||||||||||||
YRS | 76 | 76 | 76 | 74 | 75 | 75 | 75 | 75 | 75 | 75 | 74 | 75 | 73 |