YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | 0.08 | 0.22 | 0.21 | 0.38 | 0.49 | 1.58 | 0.85 | 0.45 | 0.26 | 0.42 | 0.33 | 0.10 | 1.58 | |||||||||||||
1949 | 0.48 | 0.01 | 1.55 | 0.57 | 0.62 | 3.77 | 0.27 | 0.87 | 0.64 | 0.44 | 0.03 | 0.11 | f | 3.77 | f | |||||||||||
1950 | 0.26 | 0.18 | 0.12 | 0.97 | 1.04 | 0.39 | 1.25 | 0.48 | 1.14 | 0.55 | 0.27 | 0.11 | 1.25 | |||||||||||||
1951 | 0.24 | 0.10 | 0.08 | 0.60 | 0.54 | 1.53 | 1.05 | 0.65 | 1.05 | 1.21 | 0.05 | 0.33 | 1.53 | |||||||||||||
1952 | 0.04 | 0.55 | 0.44 | 0.50 | 1.20 | 1.23 | 0.81 | 0.78 | 0.79 | 0.63 | 0.62 | 0.11 | 1.23 | |||||||||||||
1953 | 0.09 | 0.71 | 0.50 | 0.82 | 0.21 | 1.71 | 1.67 | 0.31 | 0.15 | 1.74 | 0.61 | 0.29 | 1.74 | |||||||||||||
1954 | 0.10 | 0.01 | 0.27 | 0.32 | 0.95 | 0.72 | 0.92 | 1.88 | 0.56 | 0.14 | 0.10 | 0.13 | 1.88 | |||||||||||||
1955 | 0.12 | 0.31 | 0.26 | 1.26 | 1.01 | 1.12 | 0.44 | 0.86 | 0.60 | 0.33 | 0.24 | 0.08 | 1.26 | |||||||||||||
1956 | 0.10 | 0.06 | 0.37 | 0.51 | 0.48 | 0.73 | 2.03 | 0.60 | 0.11 | 0.08 | 0.83 | 0.29 | 2.03 | |||||||||||||
1957 | 0.12 | 0.01 | 0.46 | 0.70 | 1.86 | 1.73 | 2.01 | 0.58 | 0.27 | 0.84 | 0.18 | 0.08 | 2.01 | |||||||||||||
1958 | 0.02 | 0.23 | 0.58 | 0.99 | 0.33 | 1.66 | 1.50 | 0.92 | 0.40 | 0.18 | 0.19 | 0.62 | 1.66 | |||||||||||||
1959 | 0.26 | 0.18 | 1.26 | 0.20 | 1.13 | 0.46 | 0.07 | 0.49 | 1.54 | 0.53 | 0.03 | 0.01 | 1.54 | |||||||||||||
1960 | 0.47 | 0.23 | 0.12 | 0.40 | 1.22 | a | 1.06 | 0.23 | 0.39 | 0.66 | 0.84 | 0.15 | 0.32 | 1.22 | a | |||||||||||
1961 | 0.00 | 0.10 | 0.60 | 0.58 | 1.51 | 1.04 | 1.79 | 0.50 | 0.76 | 0.07 | 0.09 | 0.10 | 1.79 | |||||||||||||
1962 | 0.10 | 0.26 | 0.10 | 0.09 | 1.84 | 1.04 | 0.73 | 0.53 | 0.07 | 0.55 | 0.30 | 0.07 | 1.84 | |||||||||||||
1963 | 0.60 | 0.05 | 0.84 | 0.32 | 0.87 | 1.26 | 0.78 | 0.95 | 1.02 | 2.73 | 0.08 | 0.32 | 2.73 | |||||||||||||
1964 | 0.01 | 0.15 | 0.26 | 0.64 | 0.76 | 0.48 | 1.03 | 0.12 | 0.33 | 0.39 | 0.03 | 0.12 | 1.03 | |||||||||||||
1965 | 0.29 | 0.28 | 0.05 | 0.38 | 1.31 | 4.39 | 1.05 | 0.36 | 0.74 | 2.39 | 0.18 | 0.43 | 4.39 | |||||||||||||
1966 | 0.26 | 0.18 | 0.43 | 0.66 | 0.07 | 2.02 | 2.44 | 1.88 | 0.83 | 0.31 | 0.24 | 0.09 | 2.44 | |||||||||||||
1967 | 0.04 | 0.05 | 0.22 | 0.99 | 1.30 | 1.47 | 0.56 | 0.42 | 0.14 | 0.24 | 0.30 | 0.26 | 1.47 | |||||||||||||
1968 | 0.03 | 0.36 | 0.33 | 0.58 | 1.30 | 0.69 | 0.41 | 2.87 | 0.20 | 0.45 | 0.13 | 0.34 | 2.87 | |||||||||||||
1969 | 0.12 | 0.09 | 0.12 | 0.27 | 1.37 | 0.88 | 1.13 | 0.46 | 0.21 | 1.35 | 0.26 | 0.12 | 1.37 | |||||||||||||
1970 | 0.27 | 0.04 | 0.65 | 0.75 | 0.99 | 4.54 | 2.57 | 0.05 | 0.27 | 0.37 | 0.13 | 0.30 | 4.54 | |||||||||||||
1971 | 0.33 | 0.15 | 0.44 | 1.25 | 1.40 | 0.44 | 0.90 | 1.39 | 0.63 | 0.32 | 0.09 | 0.21 | 1.40 | |||||||||||||
1972 | 0.18 | 0.11 | 0.03 | 1.31 | 0.81 | 0.85 | 0.85 | 0.57 | 0.91 | 0.23 | 0.60 | 0.11 | 1.31 | |||||||||||||
1973 | 0.53 | 0.05 | 1.09 | 1.03 | 0.67 | 0.63 | 0.77 | 0.80 | 1.22 | 0.70 | 0.20 | 0.65 | 1.22 | |||||||||||||
1974 | 0.13 | 0.11 | 0.87 | 0.54 | 0.40 | 2.80 | 1.40 | 1.76 | 0.43 | 0.09 | 0.23 | 0.12 | 2.80 | |||||||||||||
1975 | 0.10 | 0.41 | 0.92 | 0.33 | 2.07 | 0.83 | 0.43 | 0.82 | 0.30 | 0.43 | 0.50 | 0.17 | 2.07 | |||||||||||||
1976 | 0.48 | 0.39 | 0.35 | 0.54 | 1.82 | 0.74 | 0.69 | 0.20 | 0.13 | 0.15 | 0.20 | 0.00 | 1.82 | |||||||||||||
1977 | 0.20 | 0.02 | 0.74 | a | 1.63 | 0.82 | 0.75 | 0.70 | 1.74 | 0.07 | 0.06 | 0.32 | 0.08 | 1.74 | a | |||||||||||
1978 | 0.54 | 0.30 | 0.10 | 1.62 | 1.00 | 0.83 | 0.44 | 0.39 | 0.62 | 0.36 | 0.40 | 0.62 | 1.62 | |||||||||||||
1979 | 0.10 | 0.01 | 2.30 | 0.64 | 1.10 | 0.90 | 0.54 | 1.40 | 0.33 | 0.74 | 1.22 | 0.20 | 2.30 | |||||||||||||
1980 | 0.37 | 0.34 | 0.59 | 0.93 | 0.67 | 0.58 | 0.49 | 0.92 | 0.13 | 0.16 | 0.16 | 0.10 | 0.93 | |||||||||||||
1981 | 0.11 | 0.44 | 1.11 | 1.11 | 1.61 | 0.84 | 1.34 | 0.71 | 0.07 | 0.96 | 0.08 | 0.01 | 1.61 | |||||||||||||
1982 | 0.17 | 0.08 | 0.67 | 0.63 | 1.24 | 1.05 | 1.33 | 0.96 | b | 0.70 | 0.33 | d | 0.93 | 0.96 | 1.33 | f | ||||||||||
1983 | 0.10 | 0.01 | 1.68 | 0.86 | 1.48 | 1.26 | b | 1.44 | a | 0.28 | 0.16 | 0.36 | 1.15 | 0.13 | 1.68 | c | ||||||||||
1984 | 0.17 | 0.35 | 0.60 | 1.07 | 0.77 | a | 1.65 | 0.33 | 0.86 | 0.20 | 0.38 | 0.04 | 0.46 | 1.65 | a | |||||||||||
1985 | 0.09 | 0.04 | 0.08 | 1.43 | 0.78 | 0.67 | 1.38 | 0.33 | 0.72 | 0.14 | 0.37 | 0.50 | 1.43 | |||||||||||||
1986 | 0.11 | 0.26 | 0.41 | 2.13 | 0.75 | 1.78 | 0.40 | 0.85 | 0.30 | 0.28 | 0.27 | j | ----- | z | ----- | z | ||||||||||
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | ----- | z | ----- | z | ----- | z | 0.50 | 0.63 | 1.20 | 0.80 | 0.37 | 0.46 | 0.42 | 0.65 | 0.08 | ----- | z | |||||||||
1999 | 0.03 | 0.04 | 0.38 | a | 0.61 | 0.60 | 2.34 | 1.07 | a | 0.85 | 0.46 | b | 0.01 | a | 0.06 | 0.28 | 2.34 | e | ||||||||
2000 | 0.04 | 0.02 | 0.66 | 1.21 | 0.93 | 0.16 | 0.89 | 0.27 | 0.11 | 0.19 | c | 0.09 | a | 0.01 | 1.21 | d | ||||||||||
2001 | 0.14 | 0.12 | 0.22 | 0.95 | 0.82 | 0.40 | 0.93 | 0.41 | 0.53 | 0.40 | 0.25 | 0.00 | 0.95 | |||||||||||||
2002 | 0.04 | 0.05 | 0.13 | 0.27 | 0.71 | 2.00 | 0.94 | 0.95 | 0.07 | 0.32 | 0.05 | 0.00 | a | 2.00 | a | |||||||||||
2003 | 0.03 | 0.05 | 1.37 | 0.63 | 0.68 | 0.36 | 0.85 | 0.41 | 0.77 | 0.03 | 0.08 | 0.14 | 1.37 | |||||||||||||
2004 | 0.02 | 0.24 | 0.09 | 0.61 | 0.46 | 1.07 | 0.32 | 0.75 | 0.78 | 0.22 | 0.10 | 0.04 | 1.07 | |||||||||||||
2005 | 0.07 | 0.16 | 0.12 | 0.60 | 1.00 | 1.03 | 0.93 | 1.03 | 0.48 | 1.27 | 0.37 | 0.03 | 1.27 | |||||||||||||
2006 | 0.32 | 0.10 | 0.24 | 0.17 | 0.64 | 0.46 | 0.47 | 0.45 | 0.80 | 0.26 | 0.03 | 0.34 | 0.80 | |||||||||||||
2007 | 0.11 | 0.14 | 0.72 | 1.51 | 0.65 | 0.62 | 0.52 | 0.68 | 0.25 | 0.17 | 0.00 | 0.13 | 1.51 | |||||||||||||
2008 | 0.00 | 0.02 | 0.19 | 0.40 | 1.11 | 0.84 | 0.84 | 1.21 | a | 0.64 | 0.70 | 0.25 | 0.08 | 1.21 | a | |||||||||||
2009 | 0.07 | 0.18 | 0.08 | 1.02 | a | 0.39 | 1.84 | 1.45 | 0.58 | 0.47 | 0.17 | 0.20 | 0.10 | 1.84 | a | |||||||||||
2010 | 0.00 | 0.22 | 0.63 | a | 1.29 | 0.91 | 2.84 | 3.21 | 0.80 | 0.36 | 0.38 | 0.33 | 0.02 | 3.21 | a | |||||||||||
2011 | 0.04 | 0.08 | 0.08 | 0.42 | 1.26 | 3.89 | 1.43 | 3.33 | 0.15 | 0.56 | 0.39 | 0.04 | 3.89 | |||||||||||||
2012 | 0.04 | 0.26 | a | 0.11 | 0.77 | 0.16 | 1.09 | 0.56 | 0.18 | 0.23 | 0.28 | 0.08 | 0.19 | a | 1.09 | b | ||||||||||
2013 | 0.10 | a | 0.18 | a | 0.12 | a | 0.61 | b | 1.26 | b | 0.11 | 0.57 | 0.21 | 2.43 | 0.52 | 0.26 | 0.02 | 2.43 | g | |||||||
2014 | 0.14 | 0.23 | 0.05 | 0.16 | 0.69 | 1.05 | 0.11 | 1.44 | 2.07 | 0.79 | 0.34 | 0.29 | 2.07 | |||||||||||||
2015 | 0.22 | 0.22 | 0.16 | 2.31 | 3.11 | 0.92 | 0.68 | 0.17 | 0.11 | 0.80 | 0.27 | 0.40 | 3.11 | |||||||||||||
2016 | 0.03 | 0.66 | 0.71 | 0.68 | 0.69 | 0.63 | 0.78 | 1.41 | 0.43 | 0.36 | 0.17 | 0.28 | 1.41 | |||||||||||||
2017 | 0.05 | 0.02 | 0.17 | 0.47 | 0.83 | 0.41 | 0.03 | 0.43 | 0.21 | 0.31 | 0.11 | 0.20 | 0.83 | |||||||||||||
2018 | 0.08 | 0.02 | 0.09 | a | 0.30 | 1.53 | 0.69 | 1.23 | 0.28 | 0.35 | 0.03 | 0.17 | 0.02 | 1.53 | a | |||||||||||
2019 | 0.00 | 0.03 | 0.30 | 0.21 | 1.29 | a | 0.46 | a | 1.09 | 1.03 | 0.38 | 0.01 | 0.17 | 0.02 | a | 1.29 | c | |||||||||
2020 | 0.00 | 0.01 | 0.13 | 0.06 | 1.05 | 0.19 | 0.20 | i | 0.65 | 0.14 | 0.06 | 0.02 | 0.02 | 1.05 | i | |||||||||||
2021 | 0.01 | 0.01 | 1.14 | 0.28 | 0.43 | 0.21 | d | 1.91 | h | 0.39 | 0.41 | 0.15 | 0.06 | 0.02 | 1.91 | l | ||||||||||
2022 | 0.07 | 0.09 | 0.38 | 0.22 | 1.00 | 0.29 | 0.45 | 0.08 | 0.24 | 0.06 | 0.05 | 0.14 | a | 1.00 | a | |||||||||||
2023 | 0.27 | a | 0.02 | 0.23 | a | 0.71 | 1.63 | 1.45 | 0.89 | 2.66 | 0.10 | 0.27 | 0.14 | 0.21 | 2.66 | b | ||||||||||
2024 | 0.12 | 0.42 | 0.53 | a | 0.32 | r | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.15 | 0.17 | 0.47 | 0.73 | 0.99 | 1.21 | 0.95 | 0.81 | 0.51 | 0.48 | 0.26 | 0.19 | 1.79 | |||||||||||||
S.D. | 0.15 | 0.16 | 0.45 | 0.47 | 0.51 | 0.97 | 0.61 | 0.65 | 0.45 | 0.51 | 0.26 | 0.19 | 0.81 | |||||||||||||
SKEW | 1.38 | 1.34 | 1.73 | 1.19 | 1.22 | 1.84 | 1.34 | 1.89 | 2.08 | 2.52 | 1.99 | 1.69 | 1.66 | |||||||||||||
MAX | 0.60 | 0.71 | 2.30 | 2.31 | 3.11 | 4.54 | 3.21 | 3.33 | 2.43 | 2.73 | 1.22 | 0.96 | 4.54 | |||||||||||||
MIN | 0.00 | 0.01 | 0.03 | 0.06 | 0.07 | 0.11 | 0.03 | 0.05 | 0.07 | 0.01 | 0.00 | 0.00 | 0.80 | |||||||||||||
YRS | 65 | 65 | 65 | 65 | 65 | 65 | 63 | 65 | 65 | 65 | 64 | 63 | 57 |