YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.33 | e | 0.20 | 0.17 | 0.09 | 0.18 | ----- | z | ||||
1949 | 0.13 | 0.65 | 0.49 | 0.31 | 0.43 | 1.97 | ----- | z | 0.29 | a | 0.37 | 0.39 | 0.00 | 0.05 | ----- | z | ||||||||||
1950 | 0.24 | 0.07 | b | 0.15 | 0.83 | 0.71 | 0.37 | 2.81 | 0.29 | 0.46 | d | 0.20 | 0.15 | 0.05 | a | 2.81 | g | |||||||||
1951 | 0.10 | 0.14 | 0.24 | 0.16 | 0.33 | 0.30 | g | 1.50 | 0.43 | 0.02 | g | ----- | z | ----- | z | ----- | z | ----- | z | |||||||
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | 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 | 0.25 | 0.24 | 0.65 | 0.90 | 1.36 | ----- | z | 1.20 | a | 0.00 | a | 0.13 | ----- | z | ||||||
1990 | ----- | z | 0.00 | c | 0.36 | d | 0.70 | 0.60 | 0.03 | 1.30 | 0.56 | 0.63 | a | 0.19 | a | 0.13 | 0.04 | a | ----- | z | ||||||
1991 | 0.08 | 0.05 | 0.23 | a | 0.27 | a | 0.50 | a | 0.95 | 1.01 | 0.75 | 0.20 | 0.22 | a | 0.85 | b | 0.03 | 1.01 | f | |||||||
1992 | 0.21 | 0.08 | 1.04 | 0.15 | 0.80 | 0.33 | 0.48 | 1.80 | 0.20 | 0.30 | 0.32 | 0.10 | 1.80 | |||||||||||||
1993 | 0.25 | 0.22 | b | 0.52 | 0.25 | 0.44 | 0.58 | 1.83 | 0.45 | 0.48 | 0.50 | 0.28 | 0.30 | a | 1.83 | c | ||||||||||
1994 | 0.20 | w | 0.10 | 0.16 | 0.68 | 0.85 | 0.40 | 0.42 | 0.78 | 0.41 | 0.67 | 0.22 | e | 0.11 | a | ----- | z | |||||||||
1995 | 0.35 | a | 0.18 | a | 0.34 | b | 0.46 | b | 1.00 | 1.75 | 1.27 | 1.50 | 0.60 | 0.12 | 0.15 | 0.02 | l | 1.75 | r | |||||||
1996 | 0.24 | d | 0.01 | 0.73 | a | 0.69 | 1.18 | 0.54 | 0.75 | 0.80 | 0.40 | 0.18 | a | 0.22 | 0.05 | a | 1.18 | g | ||||||||
1997 | 0.18 | a | 0.20 | 0.10 | 0.50 | 0.50 | 0.76 | 1.58 | 0.77 | 0.45 | 1.45 | a | 0.70 | 0.13 | d | 1.58 | f | |||||||||
1998 | 0.10 | a | 0.31 | a | 0.29 | 0.35 | a | 0.07 | 0.25 | 0.78 | 0.35 | 0.74 | 0.27 | 0.28 | 0.07 | 0.78 | c | |||||||||
1999 | 0.11 | 0.26 | 0.05 | 0.82 | 1.05 | a | 0.40 | 0.75 | 1.00 | 0.46 | 0.43 | 0.45 | 0.20 | a | 1.05 | b | ||||||||||
2000 | 0.67 | 0.20 | 0.39 | b | 0.15 | 1.10 | 0.70 | 0.94 | 0.49 | 0.80 | 0.10 | a | 0.37 | 0.25 | b | 1.10 | e | |||||||||
2001 | 0.16 | a | 0.24 | 0.27 | 1.07 | a | 0.75 | 0.57 | 0.67 | a | 0.50 | 0.50 | 0.13 | 0.16 | b | 0.02 | a | 1.07 | f | |||||||
2002 | 0.14 | b | 0.19 | 0.24 | 0.35 | 0.45 | 0.58 | 1.30 | 0.34 | a | 0.75 | 0.41 | 0.06 | 0.30 | 1.30 | c | ||||||||||
2003 | 0.02 | b | 0.30 | 2.11 | a | 0.28 | 0.35 | 1.80 | 2.71 | 0.78 | 0.31 | 0.11 | 0.60 | 0.12 | 2.71 | c | ||||||||||
2004 | 0.17 | 0.35 | 0.31 | 0.81 | 0.20 | 0.59 | 1.16 | 0.48 | 0.20 | l | 0.40 | 0.35 | h | 0.50 | 1.16 | t | ||||||||||
2005 | 0.30 | 0.04 | 0.62 | 0.65 | a | 0.22 | a | 0.28 | b | 0.50 | 0.86 | 0.24 | c | 0.27 | 0.09 | 0.22 | a | 0.86 | h | |||||||
2006 | 0.22 | c | 0.06 | 0.22 | 0.15 | 0.12 | a | 0.39 | a | 1.63 | 1.00 | 0.68 | 0.50 | b | 0.21 | a | 0.26 | c | 1.63 | k | ||||||
2007 | 0.45 | 0.18 | a | 0.25 | a | 0.30 | b | 0.57 | b | 0.26 | a | 0.81 | 1.24 | 0.40 | b | 0.20 | 0.09 | a | 0.21 | a | 1.24 | k | ||||
2008 | 0.27 | a | 0.23 | 0.60 | 0.26 | c | 0.12 | 0.86 | 0.21 | 0.65 | 0.83 | 0.32 | a | 0.18 | b | 0.23 | 0.86 | g | ||||||||
2009 | 0.16 | 0.07 | 0.16 | 1.11 | 1.05 | 0.51 | 0.84 | a | 1.28 | 0.56 | a | 0.21 | 0.53 | 0.20 | 1.28 | b | ||||||||||
2010 | 0.03 | 0.17 | 0.20 | 0.56 | 0.16 | 0.29 | 1.21 | c | 1.07 | 0.22 | 0.12 | 0.15 | 0.30 | 1.21 | c | |||||||||||
2011 | 0.20 | 0.13 | 0.11 | 0.20 | 0.35 | 0.18 | 0.33 | 0.86 | 0.43 | b | 0.66 | 0.17 | 0.30 | b | 0.86 | d | ||||||||||
2012 | 0.02 | a | 0.18 | 0.07 | 1.14 | 0.44 | 0.08 | 1.50 | 0.13 | 1.32 | 0.32 | 0.00 | 0.24 | 1.50 | a | |||||||||||
2013 | 0.03 | 0.28 | 0.07 | 0.13 | 0.76 | 0.50 | 0.32 | 0.88 | 0.91 | 0.09 | 0.26 | a | 0.26 | 0.91 | a | |||||||||||
2014 | 0.65 | 0.13 | 0.29 | a | 0.43 | a | 0.93 | 0.40 | 0.93 | 0.40 | a | 0.55 | 0.59 | 0.06 | 0.26 | 0.93 | c | |||||||||
2015 | 0.21 | 0.23 | d | 0.70 | 0.78 | 0.78 | 0.81 | 1.93 | 1.19 | 0.08 | 0.38 | 0.52 | 0.26 | 1.93 | d | |||||||||||
2016 | 0.30 | 0.33 | 0.43 | 0.98 | a | 1.15 | 0.82 | 0.35 | 0.89 | 0.10 | a | 0.12 | 0.31 | 0.39 | 1.15 | b | ||||||||||
2017 | 0.25 | 0.26 | 0.20 | 0.25 | 0.60 | 0.42 | 2.00 | e | 0.50 | a | 0.62 | 0.10 | 0.50 | 0.20 | 2.00 | f | ||||||||||
2018 | 0.27 | 0.10 | 0.29 | 0.25 | 0.30 | 0.47 | 1.16 | h | 0.72 | 0.52 | 0.30 | b | 0.14 | 0.06 | 1.16 | j | ||||||||||
2019 | 0.26 | 0.32 | 0.60 | 0.24 | 0.90 | 0.26 | 1.60 | g | 1.10 | 0.62 | 1.10 | a | 0.47 | d | 0.37 | 1.60 | l | |||||||||
2020 | 0.23 | 0.32 | 0.56 | 0.30 | 0.33 | 0.65 | 0.30 | 0.37 | 0.35 | 0.59 | 0.25 | 0.25 | 0.65 | |||||||||||||
2021 | 0.08 | 0.16 | 0.64 | 0.27 | 0.77 | 0.71 | 0.97 | f | 1.74 | a | 1.11 | 0.18 | b | 0.28 | 0.05 | a | 1.74 | j | ||||||||
2022 | 0.18 | 0.43 | 0.36 | 0.35 | 2.47 | b | 0.38 | a | 0.91 | a | 1.16 | d | 0.19 | a | 0.28 | h | 0.20 | 0.21 | 2.47 | q | ||||||
2023 | 0.26 | b | 0.20 | 0.12 | 0.27 | 2.44 | 0.60 | 0.90 | 0.91 | 1.09 | 0.29 | 0.23 | c | 0.34 | 2.44 | e | ||||||||||
2024 | 0.11 | 0.66 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.21 | 0.21 | 0.39 | 0.47 | 0.68 | 0.60 | 1.08 | 0.79 | 0.52 | 0.37 | 0.26 | 0.20 | 1.33 | |||||||||||||
S.D. | 0.15 | 0.15 | 0.37 | 0.30 | 0.53 | 0.43 | 0.65 | 0.41 | 0.29 | 0.31 | 0.20 | 0.12 | 0.55 | |||||||||||||
SKEW | 1.49 | 1.31 | 2.99 | 0.88 | 1.90 | 1.85 | 0.95 | 0.62 | 0.80 | 1.91 | 1.07 | 0.30 | 1.06 | |||||||||||||
MAX | 0.67 | 0.66 | 2.11 | 1.14 | 2.47 | 1.97 | 2.81 | 1.80 | 1.32 | 1.45 | 0.85 | 0.50 | 2.71 | |||||||||||||
MIN | 0.02 | 0.00 | 0.05 | 0.13 | 0.07 | 0.03 | 0.21 | 0.13 | 0.08 | 0.09 | 0.00 | 0.02 | 0.65 | |||||||||||||
YRS | 36 | 38 | 37 | 38 | 38 | 37 | 34 | 39 | 36 | 37 | 37 | 37 | 15 |