YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.50 | g | 0.48 | 0.42 | 0.20 | 0.15 | ----- | z | ||||
1944 | 0.12 | 0.07 | 0.31 | 0.35 | 1.24 | 1.08 | 1.96 | 1.37 | 0.48 | 0.20 | 0.69 | 0.05 | 1.96 | |||||||||||||
1945 | 0.12 | 0.17 | 0.31 | 0.80 | 0.46 | 0.85 | 0.67 | 0.48 | a | 1.20 | 0.24 | 0.42 | 0.37 | 1.20 | a | |||||||||||
1946 | 0.21 | 0.82 | 0.47 | a | 0.39 | a | 1.14 | 1.40 | 0.79 | 2.05 | 1.05 | 1.37 | 0.72 | 0.80 | 2.05 | b | ||||||||||
1947 | 0.51 | ----- | z | 0.19 | 0.60 | 0.85 | 1.57 | 1.27 | 0.98 | 1.05 | 0.51 | 1.41 | 0.50 | ----- | z | |||||||||||
1948 | 0.39 | 0.18 | 0.32 | 0.65 | 0.76 | ----- | z | 1.20 | 0.48 | 0.95 | 0.31 | 0.56 | 0.67 | ----- | z | |||||||||||
1949 | 0.54 | 0.55 | 0.81 | 0.17 | 0.68 | 1.10 | 1.12 | 1.85 | 0.27 | 1.30 | a | 0.31 | 0.85 | 1.85 | a | |||||||||||
1950 | 0.42 | 0.13 | 0.72 | 0.68 | 0.88 | 1.94 | 2.10 | 1.38 | 0.85 | 0.86 | 0.65 | 0.21 | 2.10 | |||||||||||||
1951 | 0.20 | 0.38 | 0.78 | 0.54 | a | 0.55 | a | 0.96 | 1.15 | 1.54 | 0.98 | 0.35 | 0.26 | 0.84 | 1.54 | b | ||||||||||
1952 | 0.14 | 0.08 | a | 0.36 | 0.11 | 0.43 | 2.40 | 1.90 | 0.52 | 0.40 | 0.38 | 0.31 | a | 0.16 | 2.40 | b | ||||||||||
1953 | 0.72 | 0.14 | a | 0.42 | 0.18 | 0.32 | a | 1.24 | 0.86 | c | 1.10 | 0.63 | 0.48 | 0.70 | 0.84 | 1.24 | e | |||||||||
1954 | 0.37 | 0.68 | a | 0.22 | 0.52 | 0.87 | 1.65 | 0.66 | 0.68 | 1.42 | 0.34 | 0.62 | 0.05 | 1.65 | a | |||||||||||
1955 | 0.54 | 0.89 | 0.23 | 0.42 | 0.78 | 1.12 | 0.65 | 0.64 | 2.88 | 1.48 | 0.58 | 0.32 | 2.88 | |||||||||||||
1956 | 0.65 | 0.41 | 0.29 | 1.46 | 0.72 | 0.96 | 0.58 | 0.24 | 0.83 | 0.62 | 0.44 | 0.21 | a | 1.46 | a | |||||||||||
1957 | 0.42 | 0.38 | 0.92 | 1.65 | 0.42 | 0.90 | 1.32 | 0.65 | 0.64 | 0.56 | 0.52 | 0.38 | 1.65 | |||||||||||||
1958 | 0.21 | 0.34 | 0.22 | 0.28 | 0.47 | 0.92 | 1.28 | 0.56 | 1.21 | 0.53 | 0.72 | 0.22 | 1.28 | |||||||||||||
1959 | 0.38 | 0.12 | 0.18 | 0.16 | 0.86 | 0.44 | 2.48 | 2.15 | 1.13 | 0.54 | 0.49 | 0.43 | 2.48 | |||||||||||||
1960 | 0.21 | 0.21 | 0.08 | 0.52 | 0.80 | 1.42 | 1.17 | 2.53 | 0.70 | 0.78 | 0.78 | 1.36 | 2.53 | |||||||||||||
1961 | 0.34 | 0.46 | 0.08 | 0.52 | 0.40 | 0.88 | 1.91 | 1.38 | 1.12 | ----- | z | 0.39 | x | 0.32 | ----- | z | ||||||||||
1962 | 0.22 | 0.45 | 0.22 | 0.90 | 1.42 | 1.55 | 2.59 | 1.10 | 0.76 | 0.12 | 0.36 | 0.25 | 2.59 | |||||||||||||
1963 | 0.12 | 0.22 | 0.13 | 1.42 | 1.62 | 0.81 | 1.85 | 0.86 | 0.89 | 0.25 | 0.30 | 0.32 | 1.85 | |||||||||||||
1964 | 0.17 | 0.16 | 0.78 | 0.83 | 0.67 | 3.25 | 1.48 | 1.87 | 1.33 | 0.35 | 0.50 | 0.32 | 3.25 | |||||||||||||
1965 | 0.10 | 0.10 | 0.42 | 0.44 | 0.87 | 0.68 | 1.23 | 1.64 | 1.35 | 0.85 | 0.94 | 0.52 | 1.64 | |||||||||||||
1966 | 0.11 | 0.29 | ----- | z | 0.38 | 0.42 | 0.54 | 3.22 | 2.10 | 0.52 | 0.38 | 0.20 | 0.23 | ----- | z | |||||||||||
1967 | 0.18 | 0.24 | 0.42 | 0.82 | 0.37 | 1.35 | 0.78 | 0.59 | 0.57 | 0.35 | 0.14 | 0.70 | 1.35 | |||||||||||||
1968 | 0.13 | 0.08 | 0.42 | 0.60 | 0.50 | 2.13 | 1.22 | 1.76 | 1.49 | 0.80 | 0.80 | 0.23 | 2.13 | |||||||||||||
1969 | 0.48 | 0.17 | 0.05 | 0.42 | 0.60 | 0.56 | 0.85 | 2.35 | 0.53 | 1.95 | 0.26 | 0.30 | 2.35 | |||||||||||||
1970 | 0.20 | 0.12 | 0.55 | 0.40 | 1.37 | 1.98 | 0.71 | 0.98 | 0.83 | 1.10 | 0.25 | 0.63 | 1.98 | |||||||||||||
1971 | 0.15 | 0.19 | 0.13 | 0.23 | 0.68 | 0.83 | 0.73 | 0.49 | 1.35 | 2.65 | 0.49 | 0.19 | 2.65 | |||||||||||||
1972 | 0.19 | 0.07 | 0.36 | 0.72 | 0.33 | 1.67 | 6.43 | 0.53 | 1.10 | 0.52 | 0.32 | 0.46 | 6.43 | |||||||||||||
1973 | 0.03 | 0.22 | 0.54 | 0.34 | 0.59 | 0.91 | 1.98 | 1.98 | 1.37 | 1.04 | 0.51 | 0.34 | 1.98 | |||||||||||||
1974 | 0.48 | 0.15 | 0.18 | 0.77 | 0.98 | 2.04 | 0.46 | 2.84 | 0.37 | 0.73 | 0.36 | 0.65 | 2.84 | |||||||||||||
1975 | 0.78 | 0.13 | 0.19 | 0.95 | 0.73 | 1.42 | 0.39 | 0.73 | 1.08 | 0.75 | 0.33 | 0.40 | 1.42 | |||||||||||||
1976 | 0.32 | 0.09 | 0.29 | 0.25 | 0.09 | 1.37 | 1.63 | 0.89 | 0.20 | 0.45 | 0.08 | 0.18 | 1.63 | |||||||||||||
1977 | 0.18 | 0.55 | 0.49 | 0.30 | 0.80 | 0.49 | 0.50 | 0.85 | 1.97 | 0.62 | 1.45 | 0.20 | 1.97 | |||||||||||||
1978 | ----- | z | 0.03 | 0.11 | 0.36 | 1.58 | 0.63 | g | ----- | z | 0.85 | 1.57 | 0.20 | 0.40 | 0.34 | ----- | z | |||||||||
1979 | 0.20 | 0.46 | b | 0.40 | 1.67 | 0.95 | 1.10 | 0.88 | 0.90 | 1.00 | 1.98 | 1.07 | 0.20 | 1.98 | b | |||||||||||
1980 | 0.27 | 0.10 | 0.48 | 0.25 | 0.38 | 0.55 | 1.10 | 2.50 | 1.30 | 0.58 | 0.48 | 0.20 | 2.50 | |||||||||||||
1981 | 0.05 | 0.14 | 0.40 | 0.28 | a | 0.53 | j | 0.75 | 0.75 | 0.48 | 1.12 | 1.69 | 0.31 | 0.22 | 1.69 | k | ||||||||||
1982 | 0.37 | 0.25 | ----- | z | 0.57 | 0.91 | 1.01 | 1.39 | 0.75 | 1.33 | d | 1.03 | 0.39 | 0.06 | ----- | z | ||||||||||
1983 | 0.10 | 0.30 | 0.18 | 0.62 | 0.58 | 2.01 | 1.29 | 1.04 | 1.66 | 1.33 | 0.69 | 0.16 | 2.01 | |||||||||||||
1984 | 0.18 | 0.36 | 0.07 | 0.24 | 0.60 | 1.56 | 0.69 | 1.04 | 0.41 | 1.94 | 0.28 | 0.61 | 1.94 | |||||||||||||
1985 | 0.13 | 0.23 | 0.12 | a | 1.11 | 1.79 | 2.70 | 1.27 | 1.49 | 1.06 | 1.19 | 0.81 | 0.24 | 2.70 | a | |||||||||||
1986 | 0.30 | 0.24 | 0.08 | 1.02 | 0.93 | a | 0.81 | 1.19 | 1.13 | 1.22 | 0.10 | 0.76 | 0.10 | 1.22 | a | |||||||||||
1987 | 0.10 | 0.13 | 0.33 | 0.22 | 0.78 | 0.70 | 0.90 | 2.01 | 0.50 | 0.34 | 0.49 | ----- | z | ----- | z | |||||||||||
1988 | 0.17 | 0.09 | 0.76 | 0.22 | 0.40 | 1.09 | 0.65 | 1.00 | 1.86 | 0.38 | 0.90 | 0.33 | l | 1.86 | l | |||||||||||
1989 | 0.41 | 0.10 | 0.41 | 0.24 | 0.71 | 1.68 | 1.80 | 1.14 | 0.84 | 0.23 | 0.50 | 0.10 | 1.80 | |||||||||||||
1990 | 0.29 | 0.32 | 0.79 | 0.39 | 0.93 | 1.42 | 1.11 | 0.21 | 0.28 | 0.88 | 0.15 | 0.34 | 1.42 | |||||||||||||
1991 | 0.23 | 0.35 | 0.17 | 1.10 | 0.76 | 1.45 | 0.96 | 0.41 | 1.62 | 0.52 | 0.56 | 0.29 | 1.62 | |||||||||||||
1992 | 0.32 | 0.46 | a | 0.20 | 0.67 | 0.55 | 0.58 | 1.60 | 3.75 | a | 0.91 | 0.09 | 0.23 | 0.30 | 3.75 | b | ||||||||||
1993 | 0.50 | 0.02 | 0.10 | 0.60 | 1.44 | 0.69 | 2.02 | 2.79 | 0.59 | 0.41 | 0.25 | 0.30 | 2.79 | |||||||||||||
1994 | 0.11 | ----- | z | 0.24 | 0.51 | 0.74 | 1.79 | 2.07 | 1.54 | 1.10 | 0.53 | 0.82 | 0.23 | ----- | z | |||||||||||
1995 | 0.39 | 0.21 | 0.38 | 0.23 | 0.72 | 2.11 | 1.63 | 2.48 | 1.09 | 1.23 | 0.43 | 0.36 | 2.48 | |||||||||||||
1996 | 0.59 | 0.39 | 0.26 | 0.70 | 1.20 | 2.29 | 0.89 | 1.85 | 0.85 | 1.20 | 1.48 | 0.60 | 2.29 | |||||||||||||
1997 | 0.26 | l | 0.05 | 0.30 | 1.33 | b | 0.55 | 0.49 | 1.67 | 0.95 | 1.45 | 0.82 | 0.83 | 0.07 | 1.67 | n | ||||||||||
1998 | 0.23 | 0.18 | 0.11 | 0.37 | 1.95 | 1.12 | 0.91 | 0.83 | 0.14 | 1.05 | 0.78 | 0.21 | 1.95 | |||||||||||||
1999 | 0.04 | 0.17 | a | 0.78 | 0.09 | c | 1.65 | 1.23 | 5.02 | 0.61 | 1.70 | 0.26 | 0.15 | 0.11 | b | 5.02 | f | |||||||||
2000 | 0.16 | 0.08 | 0.24 | 0.73 | 0.56 | 1.05 | 0.88 | 2.08 | 0.50 | 0.88 | 0.68 | 0.27 | a | 2.08 | a | |||||||||||
2001 | 0.16 | 0.40 | 0.11 | 1.05 | 1.44 | 0.68 | 2.39 | 3.71 | 0.65 | 0.66 | 0.65 | 0.23 | a | 3.71 | a | |||||||||||
2002 | 0.07 | 0.04 | 0.36 | b | 0.26 | 0.65 | 5.19 | 4.04 | 0.62 | 0.43 | 0.30 | 0.20 | 0.13 | 5.19 | b | |||||||||||
2003 | 0.07 | 0.07 | 0.12 | 0.42 | 0.53 | b | 1.88 | 0.63 | 0.41 | 0.42 | 0.66 | 0.52 | a | 0.20 | a | 1.88 | d | |||||||||
2004 | 0.30 | a | 0.10 | 0.47 | 0.76 | 2.36 | 0.90 | 2.62 | 0.71 | 1.48 | 2.17 | 0.05 | e | 0.83 | 2.62 | f | ||||||||||
2005 | 0.36 | 0.19 | b | 0.20 | 0.66 | 2.88 | 2.94 | c | 1.71 | 2.90 | 1.38 | 1.21 | 0.81 | 0.17 | c | 2.94 | h | |||||||||
2006 | 0.22 | a | 0.27 | 0.72 | 0.42 | 0.70 | 0.59 | 0.92 | 1.01 | 0.23 | a | 0.25 | 0.47 | 0.50 | f | 1.01 | h | |||||||||
2007 | 0.13 | 0.34 | 0.36 | 0.87 | 1.11 | 1.88 | 0.96 | 0.57 | 0.75 | 1.14 | 0.14 | 0.33 | 1.88 | |||||||||||||
2008 | 0.11 | 0.11 | 0.19 | 0.92 | 1.06 | 1.11 | 1.23 | 0.55 | 1.34 | 2.45 | 0.70 | 0.49 | 2.45 | |||||||||||||
2009 | 0.36 | 0.19 | 0.91 | 0.41 | 0.81 | 0.65 | 0.69 | g | 2.93 | o | 0.67 | i | 0.88 | l | 0.15 | l | 0.24 | k | ----- | z | ||||||
2010 | 0.55 | n | 0.06 | i | 0.24 | j | 0.58 | i | 1.02 | m | 1.01 | 0.86 | o | 1.06 | n | 2.28 | l | 0.68 | q | 0.45 | n | 0.15 | p | ----- | z | |
2011 | 0.80 | f | 0.11 | c | 0.11 | f | 1.15 | e | 1.16 | f | 1.05 | h | 0.60 | g | 0.26 | f | 1.28 | e | 0.50 | g | 0.28 | g | 0.14 | e | ----- | z |
2012 | 0.51 | g | 0.54 | f | 0.65 | d | 0.38 | f | 0.69 | e | 1.09 | e | 0.58 | h | 0.69 | f | 0.41 | h | 0.84 | f | 0.33 | f | 0.67 | f | ----- | z |
2013 | 0.59 | f | 0.64 | e | 0.31 | g | 0.47 | d | 1.39 | f | 0.76 | e | 1.72 | e | 0.95 | h | 1.22 | e | 0.63 | e | 0.09 | k | 0.32 | g | ----- | z |
2014 | 0.38 | f | 0.40 | g | 0.69 | e | 0.76 | f | 0.94 | g | 2.98 | f | 1.27 | g | 0.61 | g | 1.85 | e | 0.45 | d | 0.21 | i | 0.23 | d | ----- | z |
2015 | 0.54 | d | 0.33 | e | 0.05 | i | 0.19 | f | 1.73 | g | 1.55 | d | 2.86 | f | 0.52 | i | 3.02 | f | 1.00 | d | 0.88 | h | 0.20 | e | ----- | z |
2016 | 0.14 | f | 0.18 | f | 0.70 | e | 0.43 | e | 0.61 | g | 1.07 | j | 0.97 | l | 1.45 | i | 1.17 | f | 0.31 | s | 0.26 | i | 0.62 | g | ----- | z |
2017 | 0.12 | n | 0.56 | e | 0.40 | f | 0.37 | g | 0.53 | f | 2.34 | f | 0.52 | f | 4.10 | f | 1.11 | g | 0.89 | f | 0.50 | g | 0.59 | g | ----- | z |
2018 | 0.40 | e | 0.28 | f | 0.28 | g | 0.12 | e | 0.81 | e | 0.97 | f | 0.77 | g | 1.41 | l | 1.74 | o | 0.78 | d | 0.26 | h | 0.38 | e | ----- | z |
2019 | 0.26 | e | 0.41 | f | 0.32 | n | 0.33 | e | 0.89 | f | 1.04 | e | 1.89 | f | 2.04 | d | 1.66 | g | 1.38 | f | 0.41 | f | 1.02 | e | ----- | z |
2020 | 0.41 | f | 0.08 | e | 0.18 | e | 0.34 | g | 0.62 | f | 1.18 | d | 0.93 | e | 1.52 | e | 0.42 | e | 0.86 | d | 0.06 | i | 0.29 | f | ----- | z |
2021 | 0.33 | f | 0.14 | e | 0.00 | d | 0.97 | e | 0.44 | f | 0.32 | d | 0.42 | e | 1.41 | f | 3.38 | e | 1.97 | e | 0.83 | g | 0.35 | g | ----- | z |
2022 | 0.20 | f | 0.54 | f | 0.22 | d | 2.50 | g | 2.43 | f | 1.64 | f | 1.20 | i | 0.86 | g | 1.14 | h | 0.25 | h | 0.30 | e | 0.45 | h | ----- | z |
2023 | 0.22 | g | 0.20 | e | 0.38 | f | 0.55 | g | 0.63 | f | 1.64 | g | 1.28 | q | 1.10 | c | 0.50 | j | 0.50 | e | 0.20 | d | 0.10 | d | ----- | z |
2024 | 0.10 | g | 0.30 | b | 0.04 | k | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.28 | 0.25 | 0.36 | 0.59 | 0.87 | 1.31 | 1.45 | 1.31 | 1.03 | 0.81 | 0.52 | 0.35 | 2.26 | |||||||||||||
S.D. | 0.17 | 0.19 | 0.24 | 0.37 | 0.49 | 0.77 | 1.03 | 0.82 | 0.57 | 0.58 | 0.31 | 0.26 | 0.95 | |||||||||||||
SKEW | 0.87 | 1.35 | 0.78 | 1.06 | 1.72 | 2.20 | 2.61 | 1.02 | 1.34 | 1.27 | 1.08 | 1.55 | 2.42 | |||||||||||||
MAX | 0.78 | 0.89 | 0.92 | 1.67 | 2.88 | 5.19 | 6.43 | 3.75 | 3.38 | 2.65 | 1.48 | 1.36 | 6.43 | |||||||||||||
MIN | 0.03 | 0.02 | 0.00 | 0.09 | 0.09 | 0.32 | 0.39 | 0.21 | 0.14 | 0.09 | 0.05 | 0.05 | 1.20 | |||||||||||||
YRS | 67 | 72 | 70 | 72 | 67 | 71 | 67 | 68 | 71 | 72 | 67 | 69 | 49 |