YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1945 | ----- | z | 0.10 | 0.60 | 0.56 | 0.27 | 0.52 | 1.85 | 0.56 | 0.90 | 0.25 | 0.32 | 0.42 | ----- | z | |||||||||||
1946 | 0.08 | 0.57 | a | 0.60 | 0.25 | 0.92 | 0.97 | 0.53 | 0.87 | 0.89 | 1.12 | 0.55 | 0.44 | b | 1.12 | c | ||||||||||
1947 | 0.15 | 0.20 | 0.20 | 0.71 | 1.33 | 2.34 | 0.84 | 1.56 | 0.65 | 0.44 | 0.55 | f | 0.32 | d | 2.34 | j | ||||||||||
1948 | 0.07 | c | 0.48 | a | 0.68 | 0.36 | 0.87 | ----- | z | ----- | z | 0.29 | a | 0.26 | a | 0.27 | a | 0.18 | 0.27 | a | ----- | z | ||||
1949 | 0.24 | a | 0.19 | 0.45 | 0.28 | 0.95 | a | 0.85 | 1.73 | 3.25 | 0.33 | 1.32 | 0.38 | 0.91 | 3.25 | b | ||||||||||
1950 | 0.54 | 0.13 | 0.43 | 0.74 | 1.10 | 1.67 | 1.17 | a | 0.50 | a | 0.89 | 0.81 | 0.67 | 0.14 | 1.67 | b | ||||||||||
1951 | 0.06 | a | 0.20 | a | 0.41 | 0.55 | a | 0.45 | 2.03 | 1.51 | 1.80 | 1.00 | 0.18 | 0.61 | 0.80 | a | 2.03 | d | ||||||||
1952 | 0.13 | 0.07 | 0.20 | 0.38 | 0.28 | 0.57 | 3.27 | 1.66 | 1.03 | 0.09 | 0.48 | 0.21 | 3.27 | |||||||||||||
1953 | 0.51 | 0.06 | 0.45 | a | 0.78 | 1.28 | 1.73 | 0.39 | 0.40 | 2.20 | 0.44 | 0.53 | 0.27 | 2.20 | a | |||||||||||
1954 | 0.20 | 0.38 | 0.48 | 0.50 | a | 0.50 | 1.20 | 1.08 | 1.10 | 0.89 | 0.25 | 0.21 | 0.07 | 1.20 | a | |||||||||||
1955 | 0.10 | 0.76 | a | 0.11 | 0.76 | 0.75 | 2.16 | 1.43 | a | 1.34 | 1.31 | 0.31 | 0.28 | 0.20 | 2.16 | b | ||||||||||
1956 | 0.51 | 0.16 | 0.32 | 1.60 | 1.49 | a | 0.52 | a | 1.25 | 1.58 | a | 0.19 | a | 0.77 | 0.75 | 0.26 | 1.60 | d | ||||||||
1957 | 0.25 | 0.10 | 0.31 | 1.65 | 0.45 | 1.64 | 1.52 | 1.01 | 1.00 | 0.80 | 0.43 | 0.12 | 1.65 | |||||||||||||
1958 | 0.20 | 0.15 | 0.13 | 0.09 | 0.50 | 0.84 | 3.05 | 0.28 | 0.40 | 1.10 | 0.95 | 0.21 | 3.05 | |||||||||||||
1959 | 0.14 | 0.17 | 0.03 | 0.07 | 0.67 | 0.27 | 2.04 | 1.32 | 0.37 | 0.86 | 0.26 | 0.45 | 2.04 | |||||||||||||
1960 | 0.12 | 0.05 | 0.11 | 0.42 | 0.75 | 0.98 | 1.92 | 1.28 | 0.60 | 0.52 | 0.35 | 0.64 | 1.92 | |||||||||||||
1961 | 0.12 | a | 0.13 | 0.22 | 0.66 | 0.58 | 0.56 | 1.68 | 1.35 | 2.45 | 0.29 | 0.18 | 0.34 | 2.45 | a | |||||||||||
1962 | 0.21 | 0.96 | 0.29 | 0.65 | 2.00 | 1.57 | 1.21 | 0.72 | 0.95 | 0.38 | 0.28 | 0.60 | 2.00 | |||||||||||||
1963 | 0.03 | 0.12 | 0.12 | 1.03 | 0.92 | 1.08 | 1.53 | 0.85 | 0.53 | 0.19 | 0.18 | 0.27 | 1.53 | |||||||||||||
1964 | 0.19 | 0.19 | 0.45 | 1.43 | 0.85 | 1.75 | 0.82 | 1.25 | 2.20 | 0.73 | 0.55 | 0.18 | 2.20 | |||||||||||||
1965 | 0.11 | 0.06 | 0.14 | 0.76 | 1.10 | 1.36 | 2.50 | 1.83 | 1.58 | 0.50 | 0.67 | 0.32 | 2.50 | |||||||||||||
1966 | 0.28 | 0.45 | 0.75 | 0.83 | 0.65 | 0.65 | 1.05 | 1.13 | 0.68 | 0.25 | b | 0.37 | 0.31 | 1.13 | b | |||||||||||
1967 | 0.15 | 0.12 | 0.50 | 1.10 | 0.73 | a | 1.12 | 1.40 | 0.53 | 0.38 | 0.41 | 0.32 | ----- | z | ----- | z | ||||||||||
1968 | 0.23 | 0.13 | 0.50 | 0.58 | 0.50 | 1.25 | 3.99 | 0.67 | 0.75 | 0.95 | 0.15 | 0.12 | 3.99 | |||||||||||||
1969 | 0.37 | 0.07 | 0.04 | 0.52 | 1.05 | 0.68 | 0.78 | 1.15 | 0.60 | 1.18 | 0.13 | 0.24 | 1.18 | |||||||||||||
1970 | 0.17 | 0.06 | 0.65 | 0.40 | 0.65 | 1.45 | 0.76 | 1.05 | 1.94 | 0.61 | 0.30 | 0.22 | 1.94 | |||||||||||||
1971 | 0.24 | 0.03 | 0.22 | 0.30 | 0.88 | 1.54 | 0.58 | 0.76 | 2.00 | 1.35 | 0.34 | 0.09 | 2.00 | |||||||||||||
1972 | 0.20 | 0.17 | 0.15 | 0.82 | 0.98 | 0.67 | 4.80 | 0.70 | 0.95 | 0.42 | ----- | z | ----- | z | ----- | z | ||||||||||
1973 | 0.00 | 0.07 | 0.49 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.03 | j | ----- | z | 0.43 | ----- | z | ||||
1974 | 0.25 | 0.20 | 0.53 | a | 0.94 | 1.44 | 0.91 | 1.10 | 1.88 | 0.13 | 0.95 | 0.92 | 0.40 | 1.88 | a | |||||||||||
1975 | 0.62 | 0.22 | ----- | z | 0.72 | 0.67 | 1.77 | 1.93 | 0.88 | 1.12 | 0.53 | 0.25 | 0.55 | ----- | z | |||||||||||
1976 | 0.30 | 0.55 | 0.80 | b | 0.20 | 0.08 | 1.62 | 1.00 | 1.82 | 0.13 | ----- | z | ----- | z | ----- | z | ----- | z | ||||||||
1977 | 0.50 | f | 1.42 | 0.64 | 0.20 | 1.39 | d | 1.17 | w | 0.72 | 0.74 | j | 1.47 | 0.67 | 0.37 | p | 0.67 | ----- | z | |||||||
1978 | 0.10 | 0.30 | ----- | z | 0.47 | 0.48 | 1.24 | 1.89 | 1.04 | 0.70 | 0.12 | 0.60 | c | ----- | z | ----- | z | |||||||||
1979 | ----- | z | ----- | z | 0.98 | c | 1.86 | ----- | z | 1.37 | j | 1.46 | 1.30 | 0.98 | 1.60 | ----- | z | ----- | z | ----- | z | |||||
1980 | ----- | z | ----- | z | ----- | z | 0.05 | a | 0.58 | 0.95 | 0.52 | 5.32 | 0.55 | 0.65 | 0.40 | b | ----- | z | ----- | z | ||||||
1981 | ----- | z | ----- | z | 0.20 | a | 0.34 | a | 0.65 | 2.25 | 0.84 | a | 0.84 | 1.60 | 0.80 | 0.52 | a | 0.37 | ----- | z | ||||||
1982 | ----- | z | 0.30 | s | 0.46 | b | 0.00 | a | 1.45 | ----- | z | ----- | z | 0.60 | 1.68 | 0.89 | 0.49 | a | 0.10 | k | ----- | z | ||||
1983 | 0.00 | f | 0.00 | b | 1.21 | a | 0.13 | c | 0.52 | 1.26 | 1.10 | c | 3.34 | f | 1.37 | 0.79 | 0.30 | i | ----- | z | ----- | z | ||||
1984 | 0.05 | a | 0.00 | c | 0.00 | c | 0.43 | a | 0.32 | 2.78 | 1.72 | 0.62 | 0.29 | 2.12 | 0.05 | b | 0.25 | d | 2.78 | n | ||||||
1985 | ----- | z | 0.25 | d | 0.25 | d | 0.80 | 1.43 | 2.04 | 1.43 | 3.04 | d | 1.75 | c | 0.43 | a | 0.08 | j | ----- | z | ----- | z | ||||
1986 | 0.00 | f | 0.00 | e | 0.00 | d | 0.86 | 0.19 | 0.80 | k | 0.72 | c | 0.47 | 0.80 | 0.06 | 0.27 | b | ----- | z | ----- | z | |||||
1987 | 0.00 | e | 0.05 | i | 0.37 | b | 0.14 | 2.68 | 0.24 | 1.90 | 0.80 | 1.10 | 0.33 | d | 0.12 | a | 0.00 | e | ----- | z | ||||||
1988 | ----- | z | 0.00 | c | 0.50 | g | 0.00 | 1.05 | 0.22 | 0.87 | 0.46 | 2.89 | ----- | z | 0.00 | y | ----- | z | ----- | z | ||||||
1989 | ----- | z | 0.00 | c | 0.00 | c | 0.50 | a | 0.72 | 1.13 | 0.60 | 2.18 | 1.05 | o | 0.18 | 0.23 | h | 0.00 | h | ----- | z | |||||
1990 | ----- | z | 0.00 | d | 0.55 | b | 0.70 | f | 0.70 | 1.33 | a | 0.70 | 1.40 | 1.40 | 0.21 | 0.10 | 0.00 | g | ----- | z | ||||||
1991 | ----- | z | 0.00 | d | 0.00 | b | 0.82 | 1.12 | e | 0.70 | 1.98 | 1.20 | 1.61 | 0.67 | a | 0.65 | c | 0.25 | d | ----- | z | |||||
1992 | 0.00 | d | 0.00 | d | 0.60 | c | 0.67 | b | 0.47 | 0.66 | 0.88 | b | 2.23 | 0.81 | 0.09 | a | 0.51 | g | ----- | z | ----- | z | ||||
1993 | 0.00 | g | 0.00 | 0.00 | a | 0.30 | 1.14 | 1.10 | 1.55 | j | 1.28 | 0.40 | 0.33 | b | ----- | z | 0.00 | b | ----- | z | ||||||
1994 | 0.00 | f | 0.00 | g | 0.15 | f | 0.21 | b | 0.53 | f | 1.40 | 1.30 | c | 1.53 | 0.75 | 1.25 | 0.85 | a | 0.00 | d | ----- | z | ||||
1995 | 0.00 | v | 0.00 | f | 0.64 | c | 0.63 | d | 1.28 | 0.95 | 1.12 | b | 2.07 | 1.00 | 1.25 | e | 0.50 | i | 0.00 | m | ----- | z | ||||
1996 | 0.00 | g | 0.00 | e | 0.00 | h | 1.25 | c | 1.30 | 1.20 | 1.03 | 0.90 | 0.90 | 0.56 | a | 1.00 | h | 0.00 | t | ----- | z | |||||
1997 | 0.00 | n | 0.00 | f | 0.00 | f | 2.00 | c | 0.71 | 1.32 | 1.15 | 0.38 | 0.98 | 0.68 | c | 0.12 | g | 0.00 | e | ----- | z | |||||
1998 | 0.00 | k | 0.50 | d | 0.16 | c | 0.56 | a | 2.32 | e | 1.22 | 1.25 | b | 1.90 | 0.24 | 1.40 | 0.00 | g | 0.00 | e | ----- | z | ||||
1999 | 0.00 | h | 0.00 | f | 0.50 | c | 0.78 | b | 1.36 | 1.82 | 1.35 | 1.52 | 3.54 | 0.21 | 0.00 | 0.00 | h | ----- | z | |||||||
2000 | 0.00 | f | 0.25 | d | 0.75 | 0.25 | c | 0.33 | 2.35 | 1.10 | 2.00 | 1.45 | 0.70 | b | 0.85 | f | 0.00 | k | ----- | z | ||||||
2001 | 0.00 | k | 0.00 | i | 0.00 | a | 1.20 | d | 1.80 | 1.14 | e | 3.36 | n | 6.50 | 0.75 | 1.20 | 0.15 | e | 0.20 | h | ----- | z | ||||
2002 | 0.00 | h | 0.00 | c | 0.00 | g | 0.50 | c | 1.45 | 1.90 | 1.75 | 1.25 | 0.48 | 0.25 | b | 0.00 | e | 0.00 | j | ----- | z | |||||
2003 | 0.00 | k | 0.00 | d | 0.00 | g | 0.64 | d | 0.60 | 2.00 | 0.40 | ----- | z | 1.20 | 0.48 | e | 1.00 | i | 0.25 | g | ----- | z | ||||
2004 | 0.00 | q | 0.00 | j | 0.10 | f | 0.45 | 1.40 | 0.50 | 0.56 | 1.62 | 1.00 | 1.90 | 0.00 | d | 0.00 | y | ----- | z | |||||||
2005 | 0.00 | m | 0.00 | h | 0.00 | e | 0.73 | 1.00 | 2.00 | 2.00 | 0.80 | 0.80 | 2.10 | 0.45 | f | 0.00 | m | ----- | z | |||||||
2006 | 0.00 | j | 0.00 | k | 1.00 | e | 0.67 | a | 0.30 | 0.85 | 0.30 | c | 2.12 | 0.67 | 0.90 | b | 0.00 | b | 0.26 | ----- | z | |||||
2007 | 0.00 | f | 0.00 | e | 0.20 | c | 0.98 | y | 0.75 | 3.00 | 1.83 | 0.75 | 0.30 | 0.93 | ----- | z | 0.00 | s | ----- | z | ||||||
2008 | 0.00 | c | 0.00 | h | 0.15 | c | 0.93 | h | 0.70 | 0.84 | 0.72 | 1.40 | ----- | z | 1.30 | 0.75 | ----- | z | ----- | z | ||||||
2009 | 0.00 | g | 0.15 | a | 1.67 | g | 0.45 | ----- | z | 0.75 | 0.72 | 1.00 | 0.80 | 0.85 | a | 0.25 | 0.00 | h | ----- | z | ||||||
2010 | 0.50 | a | 0.00 | g | 0.30 | 0.46 | 0.92 | 1.35 | 2.80 | 2.80 | 2.77 | 2.00 | 0.35 | f | 0.00 | d | 2.80 | r | ||||||||
2011 | ----- | z | 0.05 | x | 0.00 | y | 1.38 | v | 0.65 | t | 1.30 | s | 2.40 | w | 0.50 | u | 1.20 | w | 0.15 | y | 0.00 | y | 0.00 | w | ----- | z |
2012 | 0.00 | w | ----- | z | 1.05 | x | 0.52 | t | 0.37 | w | 0.50 | r | 1.25 | x | 1.10 | x | 0.10 | 0.55 | 0.41 | c | 0.00 | c | ----- | z | ||
2013 | 0.55 | g | 0.00 | e | 0.00 | e | 0.46 | d | 1.20 | 0.80 | 1.44 | 0.75 | 1.25 | 1.48 | 0.00 | e | 0.00 | k | ----- | z | ||||||
2014 | 2.00 | a | 0.22 | d | 4.50 | d | 2.25 | c | 0.70 | c | 1.72 | c | 1.59 | 0.37 | a | 1.34 | a | 0.56 | a | 1.60 | 1.00 | c | 4.50 | x | ||
2015 | 0.40 | a | 0.35 | 0.50 | b | 0.30 | b | 2.52 | c | 1.22 | a | 1.14 | d | 0.50 | c | 0.64 | g | 0.47 | c | 0.83 | 0.30 | ----- | z | |||
2016 | 0.16 | 0.20 | b | 0.20 | c | 0.50 | 0.91 | b | 1.70 | c | 0.72 | 2.25 | b | 1.22 | o | 0.25 | 0.22 | 0.40 | c | ----- | z | |||||
2017 | 0.50 | a | 0.40 | 0.41 | 0.33 | 0.61 | b | 0.91 | 1.14 | 1.64 | 2.30 | d | 0.68 | 0.80 | 0.30 | 2.30 | g | |||||||||
2018 | 0.40 | c | 0.40 | 0.10 | b | 0.30 | 0.96 | d | 0.93 | 1.18 | a | 0.72 | 1.21 | 0.74 | 0.20 | 0.60 | 1.21 | j | ||||||||
2019 | 0.30 | b | 0.50 | 0.70 | 0.90 | 0.53 | 2.29 | 2.25 | 0.74 | a | 1.48 | 0.98 | 0.40 | 1.00 | 2.29 | c | ||||||||||
2020 | 0.60 | a | 0.10 | 0.30 | 1.20 | 0.38 | 2.79 | 1.32 | 0.91 | 0.21 | 0.71 | 0.00 | 0.20 | 2.79 | a | |||||||||||
2021 | 0.10 | b | 0.00 | 0.47 | 2.00 | a | 1.12 | 0.50 | 0.26 | 2.40 | 2.23 | 1.00 | 0.40 | 0.72 | 2.40 | c | ||||||||||
2022 | 0.40 | 0.50 | 0.10 | 2.66 | 2.01 | a | 1.11 | 1.55 | 1.24 | 1.98 | a | 0.42 | 0.70 | 0.50 | 2.66 | b | ||||||||||
2023 | 0.13 | 0.25 | 0.50 | 0.80 | 0.66 | 0.74 | 1.05 | 1.22 | 1.06 | 0.70 | 0.58 | 0.70 | 1.22 | |||||||||||||
2024 | 0.20 | 0.72 | 0.60 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.26 | 0.22 | 0.43 | 0.69 | 0.94 | 1.29 | 1.38 | 1.36 | 1.09 | 0.73 | 0.40 | 0.34 | 2.11 | |||||||||||||
S.D. | 0.31 | 0.26 | 0.57 | 0.53 | 0.53 | 0.63 | 0.80 | 1.01 | 0.71 | 0.49 | 0.30 | 0.26 | 0.70 | |||||||||||||
SKEW | 3.96 | 2.17 | 5.43 | 1.56 | 1.19 | 0.62 | 1.79 | 2.75 | 1.07 | 1.02 | 1.19 | 0.83 | 0.65 | |||||||||||||
MAX | 2.00 | 1.42 | 4.50 | 2.66 | 2.68 | 3.00 | 4.80 | 6.50 | 3.54 | 2.12 | 1.60 | 1.00 | 3.99 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.08 | 0.22 | 0.26 | 0.28 | 0.10 | 0.06 | 0.00 | 0.00 | 1.12 | |||||||||||||
YRS | 48 | 63 | 67 | 73 | 73 | 71 | 72 | 73 | 73 | 75 | 57 | 51 | 29 |