YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.19 | 0.11 | a | 0.22 | o | 0.97 | h | 0.37 | ----- | z | ||
1949 | 0.45 | j | 0.16 | 1.00 | l | 0.06 | x | 2.81 | k | 1.44 | 0.44 | 0.98 | 0.03 | a | 0.77 | d | 0.15 | 0.00 | ----- | z | ||||||
1950 | 0.14 | 0.16 | 0.35 | 0.40 | 0.94 | 0.45 | 1.29 | 0.31 | 0.33 | 0.00 | 0.30 | 0.11 | 1.29 | |||||||||||||
1951 | 0.15 | 0.30 | 0.06 | 0.87 | 1.28 | 0.59 | a | 0.97 | 0.39 | 1.20 | ----- | 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 | 0.00 | 0.30 | 0.00 | ----- | z | |||
1981 | 0.50 | 0.00 | 1.10 | 1.00 | a | 0.81 | 0.55 | 0.25 | c | 0.32 | d | 0.40 | 0.36 | 0.00 | 0.13 | 1.10 | h | |||||||||
1982 | 0.20 | 0.35 | ----- | 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 | 0.24 | 0.42 | 2.72 | 1.12 | 2.11 | 1.30 | 0.50 | 0.46 | 0.27 | 0.38 | ----- | z | ||||||||||
1986 | 0.07 | 1.23 | 0.06 | 0.74 | 0.49 | 0.60 | 1.08 | 0.33 | 0.22 | 0.63 | 0.26 | 0.20 | 1.23 | |||||||||||||
1987 | 0.19 | 0.52 | 0.59 | 0.45 | a | 1.01 | ----- | z | ----- | z | 0.45 | j | 0.53 | 0.00 | 0.47 | 0.32 | ----- | z | ||||||||
1988 | 0.49 | 0.09 | 0.04 | 1.62 | 1.25 | 0.83 | 0.57 | 0.32 | 0.65 | 0.00 | 0.12 | 0.17 | 1.62 | |||||||||||||
1989 | 0.19 | 0.29 | 0.00 | 0.51 | 1.22 | 1.03 | 1.81 | 0.82 | 0.31 | 0.18 | 0.00 | 0.05 | 1.81 | |||||||||||||
1990 | 0.79 | 0.20 | 0.95 | 0.54 | 1.22 | 0.44 | 0.62 | 1.04 | 0.62 | 0.55 | 0.63 | 0.04 | 1.22 | |||||||||||||
1991 | 0.16 | 0.07 | 0.50 | 0.75 | 1.12 | 2.00 | 3.20 | 0.74 | a | 0.16 | 0.74 | 1.18 | 0.64 | 3.20 | a | |||||||||||
1992 | 0.62 | 0.22 | 0.56 | 0.52 | 0.32 | 1.64 | 2.84 | 2.22 | 0.34 | 0.56 | 0.49 | 0.13 | 2.84 | |||||||||||||
1993 | 0.17 | 0.82 | 0.13 | 0.31 | 0.80 | 0.67 | 0.84 | 0.98 | 0.23 | 1.34 | 0.74 | 0.17 | 1.34 | |||||||||||||
1994 | 0.59 | 0.00 | 0.18 | 1.32 | 1.04 | 0.65 | 0.90 | 0.10 | 0.14 | f | 0.54 | 0.59 | 0.32 | 1.32 | f | |||||||||||
1995 | 0.19 | 0.22 | b | 0.23 | a | 0.61 | 0.71 | 1.17 | 1.10 | 0.42 | 0.98 | 0.97 | 0.24 | 0.02 | 1.17 | c | ||||||||||
1996 | 0.36 | 0.06 | 0.12 | 0.51 | 2.18 | 0.81 | 1.38 | 1.01 | e | 1.26 | 0.06 | 0.09 | 0.00 | 2.18 | e | |||||||||||
1997 | 0.17 | 0.34 | 0.00 | 0.37 | 2.40 | 1.33 | 2.15 | 1.75 | e | 0.28 | 0.81 | 0.21 | 0.19 | 2.40 | e | |||||||||||
1998 | 0.00 | 0.54 | 0.11 | 0.76 | 1.09 | 0.33 | a | 1.35 | 0.78 | 0.51 | 0.36 | 0.41 | 0.07 | 1.35 | a | |||||||||||
1999 | 0.05 | 0.17 | 0.36 | 0.64 | 1.03 | 2.77 | 0.53 | 1.58 | e | 0.63 | 0.08 | 0.07 | 0.20 | 2.77 | e | |||||||||||
2000 | 0.87 | 0.08 | f | 1.09 | 1.08 | 0.32 | 0.67 | 0.75 | 0.97 | 0.61 | 0.55 | 0.20 | 0.18 | 1.09 | f | |||||||||||
2001 | 0.63 | 0.13 | 0.22 | 0.66 | b | 1.35 | 0.57 | 1.87 | 0.16 | 2.03 | 0.29 | 0.95 | 0.08 | 2.03 | b | |||||||||||
2002 | 0.13 | 0.07 | 0.34 | 0.17 | 0.23 | 1.40 | 0.24 | 1.15 | 0.73 | 0.95 | 0.08 | 0.03 | 1.40 | |||||||||||||
2003 | 0.31 | 0.21 | 1.70 | 0.83 | 0.72 | 2.53 | 0.00 | 0.56 | 0.72 | 0.03 | 0.08 | 0.29 | 2.53 | |||||||||||||
2004 | 0.14 | 0.21 | 0.13 | 0.88 | 0.39 | 0.48 | 0.83 | 0.45 | c | 0.62 | 0.32 | 0.37 | 0.31 | 0.88 | c | |||||||||||
2005 | 0.09 | 0.06 | 0.28 | d | 0.62 | 0.76 | 1.70 | 0.80 | 1.87 | 0.52 | 1.97 | 0.21 | 0.12 | 1.97 | d | |||||||||||
2006 | 0.03 | 0.05 | 0.76 | 0.16 | 0.63 | 1.65 | 0.70 | 0.42 | 0.88 | 0.85 | 0.09 | 0.97 | 1.65 | |||||||||||||
2007 | 0.49 | 0.21 | 0.00 | 0.70 | 1.18 | 2.10 | 1.36 | 1.04 | 0.38 | 0.18 | 0.50 | a | 0.69 | 2.10 | a | |||||||||||
2008 | 0.10 | 0.36 | 0.56 | 0.90 | 0.30 | 1.02 | 2.04 | 2.07 | 0.87 | 0.66 | 0.29 | 0.32 | 2.07 | |||||||||||||
2009 | 0.02 | a | 0.47 | b | 0.67 | 1.40 | 1.10 | 2.15 | 0.53 | 0.75 | 0.87 | 1.58 | c | 0.46 | 0.26 | d | 2.15 | j | ||||||||
2010 | 0.00 | c | 0.16 | b | 0.34 | a | 0.52 | 0.34 | 1.41 | 0.40 | 0.90 | 0.70 | 0.20 | 0.10 | 0.22 | 1.41 | f | |||||||||
2011 | 0.54 | 0.60 | 0.17 | b | 0.92 | 2.30 | 0.80 | 1.37 | 0.65 | 0.52 | 0.35 | 0.33 | 0.06 | b | 2.30 | d | ||||||||||
2012 | 0.05 | 0.45 | a | 0.30 | 1.20 | 0.25 | 0.34 | 1.16 | 0.30 | 0.67 | a | 0.10 | a | 0.00 | 0.26 | 1.20 | c | |||||||||
2013 | 0.06 | 0.57 | 1.14 | 0.56 | 0.60 | 0.56 | 0.41 | 1.20 | a | 2.20 | 0.51 | 0.09 | 0.15 | 2.20 | a | |||||||||||
2014 | 0.51 | 0.22 | 0.14 | 0.34 | a | 0.60 | 2.12 | 1.28 | 0.71 | 1.46 | 0.37 | 0.12 | 0.55 | 2.12 | a | |||||||||||
2015 | 0.10 | 0.28 | l | 0.15 | 0.87 | 1.28 | 1.01 | b | 1.16 | 0.27 | 0.07 | a | 0.92 | 0.68 | 0.18 | a | 1.28 | p | ||||||||
2016 | 0.00 | 0.77 | 0.29 | 2.20 | 0.90 | a | 0.55 | 0.53 | 0.49 | 0.10 | 0.00 | 0.30 | b | 0.05 | c | 2.20 | f | |||||||||
2017 | 0.44 | 0.05 | 1.31 | 0.60 | 1.52 | 1.45 | b | 0.67 | 1.16 | 1.33 | 0.40 | h | 0.12 | 0.09 | 1.52 | j | ||||||||||
2018 | 0.70 | 0.20 | 0.20 | 1.42 | 1.27 | 1.08 | 0.97 | 1.01 | c | 0.07 | 0.62 | 0.08 | 0.05 | 1.42 | c | |||||||||||
2019 | 0.11 | 0.22 | 0.20 | c | 0.00 | a | 0.62 | 0.42 | 0.77 | 0.76 | 0.26 | 0.50 | a | 0.30 | a | 0.00 | 0.77 | f | ||||||||
2020 | 0.32 | 0.07 | 0.30 | a | 0.00 | 0.96 | 0.70 | 0.56 | 0.21 | 0.72 | a | 0.30 | 0.04 | b | 0.19 | a | 0.96 | e | ||||||||
2021 | 0.10 | 0.15 | a | 1.85 | 1.05 | 0.80 | c | 0.65 | 1.15 | b | 0.00 | b | 0.76 | c | 0.00 | a | 0.00 | a | 0.00 | d | 1.85 | q | ||||
2022 | 0.29 | a | 0.12 | 0.50 | 0.00 | 0.40 | 0.49 | 1.10 | 0.42 | 0.66 | g | ----- | z | ----- | z | ----- | z | ----- | z | |||||||
2023 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.27 | 0.28 | 0.44 | 0.72 | 0.99 | 1.08 | 1.08 | 0.81 | 0.64 | 0.49 | 0.29 | 0.20 | 1.78 | |||||||||||||
S.D. | 0.24 | 0.25 | 0.45 | 0.45 | 0.59 | 0.64 | 0.68 | 0.53 | 0.49 | 0.45 | 0.27 | 0.21 | 0.59 | |||||||||||||
SKEW | 0.87 | 1.76 | 1.54 | 0.93 | 1.19 | 0.93 | 1.20 | 0.83 | 1.40 | 1.28 | 1.40 | 1.79 | 0.67 | |||||||||||||
MAX | 0.87 | 1.23 | 1.85 | 2.20 | 2.72 | 2.77 | 3.20 | 2.22 | 2.20 | 1.97 | 1.18 | 0.97 | 3.20 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.23 | 0.33 | 0.00 | 0.00 | 0.03 | 0.00 | 0.00 | 0.00 | 0.88 | |||||||||||||
YRS | 41 | 40 | 41 | 41 | 41 | 41 | 41 | 42 | 41 | 40 | 41 | 42 | 23 |