YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.40 | ----- | z | |
1951 | 0.13 | 0.68 | 1.16 | 0.96 | 1.29 | 2.10 | 2.35 | 0.98 | 2.16 | 0.48 | 1.01 | 0.14 | 2.35 | |||||||||||||
1952 | 0.40 | a | 0.21 | 1.01 | 0.50 | 1.23 | 1.60 | 2.92 | 1.25 | 0.26 | 0.00 | 0.77 | 0.20 | 2.92 | a | |||||||||||
1953 | 0.58 | 0.75 | 0.43 | 0.85 | a | 0.44 | 1.55 | 1.54 | 0.75 | 0.15 | 0.03 | 0.81 | 0.72 | 1.55 | a | |||||||||||
1954 | 0.05 | 0.41 | 0.87 | 1.51 | a | 0.80 | 0.78 | 1.16 | 0.92 | 0.92 | 0.62 | 0.15 | 0.21 | 1.51 | a | |||||||||||
1955 | 0.15 | 0.50 | 0.16 | 0.45 | 0.45 | 0.47 | a | 4.20 | 2.65 | a | 0.31 | 1.47 | a | 0.23 | a | 0.48 | a | 4.20 | e | |||||||
1956 | 0.25 | 0.15 | 0.95 | 0.26 | 0.50 | a | 1.78 | 1.15 | 1.85 | a | 0.25 | 1.04 | 0.42 | a | 0.09 | 1.85 | c | |||||||||
1957 | 0.08 | 0.30 | 0.64 | 0.30 | 1.10 | a | 2.70 | 2.86 | 3.03 | 0.51 | 0.42 | 0.62 | 0.17 | 3.03 | a | |||||||||||
1958 | 0.15 | 0.06 | 0.14 | 0.76 | 0.46 | 1.48 | 1.94 | 1.01 | 0.43 | 0.89 | 0.26 | 0.07 | 1.94 | |||||||||||||
1959 | 0.04 | 0.08 | 0.15 | 0.84 | 0.92 | 2.07 | 2.66 | 2.80 | 1.15 | 0.78 | 0.22 | 0.90 | 2.80 | |||||||||||||
1960 | 0.59 | 0.13 | 0.25 | 1.12 | 1.40 | 1.25 | 0.75 | 1.11 | 1.41 | 0.43 | 0.83 | 0.55 | 1.41 | |||||||||||||
1961 | 0.07 | 0.54 | 1.15 | 0.82 | 1.05 | 0.34 | 1.84 | 1.13 | 0.56 | 1.09 | 0.74 | 0.37 | 1.84 | |||||||||||||
1962 | 0.16 | 0.40 | 0.63 | 0.35 | 1.60 | 0.77 | 1.11 | 1.49 | 0.66 | 0.31 | 0.41 | 0.14 | 1.60 | |||||||||||||
1963 | 0.23 | 0.17 | 0.44 | c | 0.85 | a | 1.16 | 0.57 | 1.09 | 0.50 | 1.02 | 0.68 | 0.56 | 0.31 | 1.16 | d | ||||||||||
1964 | 0.34 | 0.02 | 0.50 | 1.00 | 1.49 | 1.15 | 1.37 | 1.74 | 1.27 | 0.45 | 0.23 | 0.62 | 1.74 | |||||||||||||
1965 | 0.10 | 0.67 | 1.42 | 0.65 | 1.04 | 3.77 | 1.66 | 1.30 | 1.45 | 0.45 | 0.75 | 0.70 | 3.77 | |||||||||||||
1966 | 0.36 | 0.55 | 0.91 | 0.22 | 0.48 | 0.88 | 0.55 | 1.13 | 3.13 | 1.95 | 0.24 | 0.37 | 3.13 | |||||||||||||
1967 | 0.58 | 0.55 | 0.41 | 1.80 | 1.15 | 1.50 | 0.83 | 1.45 | 0.55 | 1.26 | 0.05 | 0.13 | 1.80 | |||||||||||||
1968 | 0.30 | 0.15 | 0.40 | 1.75 | 1.45 | 1.68 | 1.27 | 0.16 | 1.36 | 1.96 | 0.29 | 0.90 | 1.96 | |||||||||||||
1969 | 0.40 | 0.20 | 0.87 | 0.85 | 0.35 | 0.95 | 0.80 | 0.97 | 0.43 | 0.68 | 0.39 | 0.65 | 0.97 | |||||||||||||
1970 | 0.22 | 0.11 | 1.25 | 1.45 | 1.03 | 0.70 | 1.60 | 0.62 | 1.06 | 1.65 | 1.88 | 0.42 | 1.88 | |||||||||||||
1971 | 0.26 | 0.53 | 0.40 | 0.44 | 1.25 | 1.33 | 1.17 | 1.05 | 1.15 | 1.69 | 0.83 | 0.36 | 1.69 | |||||||||||||
1972 | 0.49 | 0.18 | 0.34 | 0.85 | 1.25 | 0.76 | 1.30 | 1.37 | 0.87 | 0.51 | 1.58 | 0.66 | 1.58 | |||||||||||||
1973 | 0.65 | 0.32 | 0.74 | 0.68 | 2.00 | 0.47 | 1.53 | 1.18 | 1.84 | 0.68 | 1.88 | 0.28 | 2.00 | |||||||||||||
1974 | 0.16 | 0.36 | 0.34 | 0.92 | 0.98 | 1.77 | 0.86 | 1.90 | 0.42 | 0.56 | 0.78 | 0.33 | 1.90 | |||||||||||||
1975 | 1.25 | 0.21 | 0.66 | 3.45 | 1.25 | 1.68 | 0.98 | 2.43 | 0.42 | 0.24 | 1.55 | 1.12 | 3.45 | |||||||||||||
1976 | 0.40 | 0.38 | 0.93 | 0.79 | 0.30 | 1.03 | 1.00 | 0.81 | 1.43 | 0.34 | 0.04 | 0.18 | 1.43 | |||||||||||||
1977 | 0.22 | 1.15 | 1.13 | 0.80 | 0.84 | 1.36 | 1.33 | 1.73 | 0.82 | 1.20 | 0.70 | 0.85 | 1.73 | |||||||||||||
1978 | 0.19 | 0.13 | 0.31 | 1.07 | 1.60 | 2.63 | 2.65 | 4.16 | 3.92 | 0.10 | 1.04 | 0.56 | 4.16 | |||||||||||||
1979 | 0.39 | 0.35 | 1.40 | 0.43 | 0.84 | 1.36 | 1.40 | 1.86 | 1.27 | 1.09 | 0.70 | 0.35 | 1.86 | |||||||||||||
1980 | 0.62 | 0.51 | 0.30 | 1.10 | 1.11 | 1.15 | 0.79 | 1.44 | 1.80 | 0.60 | 0.13 | 0.13 | 1.80 | |||||||||||||
1981 | 0.06 | 1.05 | 0.61 | 0.92 | 0.59 | 1.48 | 2.55 | 1.45 | 0.40 | 0.60 | 1.10 | 0.31 | 2.55 | |||||||||||||
1982 | 0.86 | a | 0.33 | b | 0.80 | 0.91 | 1.09 | a | 0.40 | a | 0.48 | 1.50 | 1.10 | 1.35 | 1.28 | 1.40 | 1.50 | e | ||||||||
1983 | 0.22 | 0.68 | 0.85 | 1.38 | 1.80 | b | 1.54 | 1.08 | 0.96 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||||||
1984 | 0.25 | a | 0.62 | 1.05 | 1.15 | b | 0.85 | 0.90 | 3.35 | a | 4.02 | 1.38 | 1.30 | 0.52 | 0.62 | 4.02 | d | |||||||||
1985 | 0.12 | 0.21 | 1.05 | 0.74 | 2.27 | 0.77 | 1.67 | 2.35 | 1.52 | 2.33 | 0.51 | 0.97 | 2.35 | |||||||||||||
1986 | 0.28 | 0.28 | 1.05 | 1.39 | 1.13 | 3.14 | 0.97 | 1.48 | 2.85 | 1.31 | a | 0.41 | a | 0.15 | 3.14 | b | ||||||||||
1987 | 0.45 | 0.00 | 0.35 | 0.15 | 0.70 | 0.84 | 5.80 | 1.92 | 0.55 | 0.48 | 0.70 | 0.72 | 5.80 | |||||||||||||
1988 | 1.15 | 0.24 | 0.80 | 0.60 | 1.73 | 0.06 | 1.01 | 1.65 | 1.01 | 0.27 | 1.14 | 0.50 | k | 1.73 | k | |||||||||||
1989 | 0.49 | 0.28 | 0.90 | 1.12 | 1.10 | 1.82 | a | 1.14 | 1.45 | 0.64 | 0.29 | 0.63 | 0.10 | 1.82 | a | |||||||||||
1990 | 0.13 | 0.33 | 1.15 | a | 1.38 | 1.14 | 1.63 | 2.15 | 0.44 | 0.61 | 0.53 | 0.32 | 0.48 | 2.15 | a | |||||||||||
1991 | 0.13 | 0.39 | 1.01 | 0.92 | 2.10 | 0.45 | 1.38 | 1.12 | 1.67 | 0.45 | 2.06 | 0.54 | a | 2.10 | a | |||||||||||
1992 | 0.58 | 0.33 | 0.83 | 0.55 | 0.33 | 2.29 | 3.81 | 1.40 | 4.35 | 1.43 | 1.11 | 0.32 | 4.35 | |||||||||||||
1993 | 0.80 | 0.19 | 0.81 | 0.65 | 0.84 | 2.65 | 1.04 | 2.46 | 1.01 | 0.24 | 0.66 | 0.26 | c | 2.65 | c | |||||||||||
1994 | 0.32 | c | 0.39 | 0.18 | 1.64 | 0.63 | 5.47 | 0.73 | 2.04 | 2.19 | 1.55 | 0.83 | 0.19 | 5.47 | c | |||||||||||
1995 | 0.31 | 0.13 | 0.82 | 1.13 | 1.05 | 1.58 | 1.53 | 2.05 | 0.57 | 1.33 | 0.70 | 0.45 | a | 2.05 | a | |||||||||||
1996 | 1.44 | 0.07 | 1.51 | 0.16 | a | 0.77 | 1.17 | 0.55 | 1.83 | 0.52 | 3.40 | 1.73 | 0.82 | 3.40 | a | |||||||||||
1997 | 0.63 | 0.05 | a | 0.36 | 0.22 | 0.72 | 1.03 | b | 2.65 | 1.80 | 1.70 | 1.04 | 0.43 | a | 0.09 | a | 2.65 | e | ||||||||
1998 | 0.44 | 0.45 | 1.22 | a | 0.61 | 1.69 | 2.30 | a | 1.30 | 1.46 | 1.11 | 1.18 | 1.22 | 0.33 | a | 2.30 | c | |||||||||
1999 | 0.49 | 0.49 | 0.66 | 0.94 | 1.42 | 1.23 | 3.70 | 1.22 | 0.78 | 0.67 | 0.72 | 0.28 | 3.70 | |||||||||||||
2000 | 0.46 | 0.38 | 0.63 | 0.78 | a | 1.45 | a | 1.18 | 4.40 | 1.33 | 0.39 | 0.45 | 1.33 | 0.41 | a | 4.40 | c | |||||||||
2001 | 0.82 | 0.83 | 0.50 | 1.53 | 0.70 | 0.92 | 0.32 | 1.07 | 1.00 | 0.48 | 0.90 | 0.25 | 1.53 | |||||||||||||
2002 | 0.44 | 0.23 | 0.99 | 0.82 | 0.44 | 1.97 | 1.12 | 3.63 | 2.83 | 1.99 | 0.04 | 0.25 | 3.63 | |||||||||||||
2003 | 0.15 | 0.59 | 0.85 | 1.25 | 1.90 | 1.10 | 1.51 | 0.87 | 1.11 | 0.49 | 0.46 | 0.39 | 1.90 | |||||||||||||
2004 | 0.23 | ----- | z | 0.88 | 0.87 | 1.18 | 1.77 | c | 1.14 | a | 0.82 | d | 2.63 | b | 0.95 | a | 0.65 | d | 0.17 | d | ----- | z | ||||
2005 | ----- | z | ----- | z | 0.67 | a | 0.95 | c | 0.78 | 0.81 | 0.96 | d | 0.62 | r | 1.94 | i | 2.98 | h | 0.50 | j | 0.41 | d | ----- | z | ||
2006 | 0.52 | k | 0.09 | i | 0.58 | e | 1.21 | j | 2.55 | i | 0.64 | h | 1.14 | k | 2.97 | h | 1.37 | j | 0.18 | b | 0.58 | e | 0.87 | h | ----- | z |
2007 | 1.22 | i | 1.35 | a | 0.74 | e | 1.90 | i | 1.29 | b | 0.68 | d | 1.35 | i | 3.46 | h | 1.51 | a | 1.33 | c | 0.18 | b | 0.94 | e | ----- | z |
2008 | 0.14 | e | 0.16 | b | 0.88 | g | 1.45 | h | 1.34 | j | 1.86 | g | 1.66 | f | 1.24 | d | 0.86 | f | 0.51 | h | 0.53 | j | 0.36 | j | ----- | z |
2009 | 0.28 | j | 0.54 | d | 0.41 | d | 1.04 | f | 0.38 | m | 2.00 | d | 0.77 | e | 2.77 | j | 0.57 | a | 1.54 | h | 0.13 | j | 1.71 | h | ----- | z |
2010 | 0.46 | b | 0.39 | b | 0.38 | a | 0.43 | d | 0.77 | j | 2.60 | f | 1.53 | j | 2.62 | i | 1.78 | i | 0.93 | d | 1.40 | h | 1.16 | l | ----- | z |
2011 | 0.60 | f | 1.32 | d | 0.95 | d | 0.89 | d | 1.96 | f | 1.54 | d | 2.59 | f | 1.02 | d | 0.25 | g | 0.52 | f | 0.24 | d | 0.57 | g | ----- | z |
2012 | 0.28 | g | 1.55 | d | 0.80 | e | 1.95 | e | 3.74 | e | 2.40 | c | 2.24 | f | 1.70 | h | 0.29 | c | 0.72 | b | 0.32 | e | 0.48 | i | ----- | z |
2013 | 0.47 | e | 0.66 | b | 0.88 | d | 0.93 | d | 2.74 | e | 0.99 | e | 1.83 | c | 1.21 | b | 0.89 | f | 0.90 | c | 0.17 | d | 0.37 | k | ----- | z |
2014 | 0.34 | e | 0.31 | a | 0.55 | a | 2.13 | c | 1.61 | c | 2.43 | e | 1.22 | e | 1.21 | d | 1.87 | e | 0.92 | b | 0.10 | f | 0.23 | g | ----- | z |
2015 | 0.08 | e | 0.20 | b | 0.60 | b | 0.60 | d | 0.80 | f | 1.50 | d | 4.00 | d | 1.63 | g | 1.57 | d | 1.04 | b | 1.67 | f | 0.97 | i | ----- | z |
2016 | 0.43 | f | 0.25 | c | 0.60 | e | 0.58 | a | 0.93 | c | 1.40 | b | 1.48 | c | 2.37 | c | 1.65 | e | 0.75 | d | 0.70 | d | 0.50 | k | ----- | z |
2017 | 0.95 | f | 0.60 | 0.28 | b | 1.58 | d | 1.95 | c | 1.15 | c | 3.25 | b | 0.93 | d | 0.57 | d | 1.10 | e | 0.07 | d | 0.22 | j | ----- | z | |
2018 | 0.58 | d | 0.41 | a | 0.65 | b | 1.30 | c | 1.50 | c | 3.75 | c | 2.07 | e | 1.86 | b | 2.24 | b | 1.28 | c | 0.52 | g | 1.49 | h | ----- | z |
2019 | 0.35 | c | 0.40 | f | 0.80 | b | 1.95 | b | 1.87 | c | 1.05 | a | 2.57 | g | 0.91 | c | 2.00 | d | 1.17 | d | 0.45 | f | 1.05 | m | ----- | z |
2020 | 1.30 | e | 0.33 | a | 0.62 | c | 0.00 | n | 2.25 | j | 4.33 | c | 0.80 | a | 1.37 | f | 0.62 | f | 1.72 | b | 0.95 | g | 0.38 | f | ----- | z |
2021 | 0.65 | c | 0.19 | t | 1.62 | g | 0.90 | f | 0.98 | e | 0.88 | b | 1.00 | a | 1.05 | b | 1.46 | b | 1.26 | e | 0.90 | 0.58 | a | ----- | z | |
2022 | 0.21 | a | 0.27 | b | 0.93 | 0.61 | b | 1.70 | h | 0.31 | d | 0.79 | c | 1.84 | a | 0.19 | a | 0.08 | e | 0.59 | b | 0.46 | a | ----- | z | |
2023 | 1.16 | e | 1.14 | a | 1.15 | a | 1.29 | b | 0.82 | b | 1.23 | b | 1.42 | a | 0.80 | a | 2.15 | b | 1.79 | c | 0.03 | b | 0.42 | j | ----- | z |
2024 | 1.58 | d | 0.13 | a | 0.82 | q | 0.10 | w | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.43 | 0.42 | 0.73 | 0.97 | 1.18 | 1.51 | 1.69 | 1.53 | 1.25 | 0.93 | 0.69 | 0.44 | 2.50 | |||||||||||||
S.D. | 0.35 | 0.33 | 0.33 | 0.55 | 0.60 | 0.96 | 1.09 | 0.78 | 0.88 | 0.62 | 0.49 | 0.29 | 1.10 | |||||||||||||
SKEW | 1.51 | 1.52 | 0.15 | 1.58 | 1.44 | 1.69 | 1.57 | 1.40 | 1.33 | 1.16 | 0.93 | 1.04 | 1.17 | |||||||||||||
MAX | 1.58 | 1.55 | 1.51 | 3.45 | 3.74 | 5.47 | 5.80 | 4.16 | 4.35 | 3.40 | 2.06 | 1.40 | 5.80 | |||||||||||||
MIN | 0.04 | 0.00 | 0.14 | 0.15 | 0.30 | 0.06 | 0.32 | 0.16 | 0.15 | 0.00 | 0.03 | 0.07 | 0.97 | |||||||||||||
YRS | 66 | 69 | 71 | 67 | 65 | 70 | 66 | 65 | 65 | 68 | 63 | 57 | 48 |