YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1951 | ----- | z | ----- | z | ----- | z | 0.26 | a | 0.53 | 0.72 | 0.26 | 1.20 | 0.32 | 0.13 | ----- | z | 0.15 | ----- | z | |||||||
1952 | ----- | z | 0.15 | a | 0.14 | 0.00 | 0.23 | 1.68 | 1.69 | 1.03 | 0.60 | 0.00 | 0.10 | 0.13 | ----- | z | ||||||||||
1953 | 0.16 | 0.29 | 0.95 | d | 1.48 | 1.10 | 1.25 | 0.25 | c | 0.87 | b | 0.65 | 0.37 | 0.38 | 0.30 | a | 1.48 | j | ||||||||
1954 | 0.30 | e | 0.00 | 0.31 | 0.87 | 1.25 | 1.60 | 0.71 | 0.91 | 0.95 | 0.20 | 0.26 | 0.02 | 1.60 | e | |||||||||||
1955 | 0.08 | 0.20 | 0.19 | 0.72 | 1.45 | 0.78 | 0.86 | 0.50 | 0.60 | 0.10 | 0.58 | 0.06 | 1.45 | |||||||||||||
1956 | 0.35 | 0.12 | 0.64 | 0.09 | 0.99 | 3.90 | 0.90 | 2.10 | 0.86 | 0.51 | 0.85 | 0.15 | 3.90 | |||||||||||||
1957 | 0.20 | 0.10 | 0.09 | 0.43 | 0.54 | 0.64 | 0.71 | j | 3.87 | 0.90 | l | 1.25 | 0.34 | 0.11 | 3.87 | v | ||||||||||
1958 | 0.39 | 0.56 | 0.17 | 0.31 | 0.35 | 1.01 | 0.90 | 0.28 | 0.44 | 0.45 | 0.36 | 0.03 | 1.01 | |||||||||||||
1959 | 0.12 | 0.10 | 0.22 | 0.20 | 0.81 | 1.02 | 0.72 | 0.25 | 0.86 | 1.53 | 0.41 | 0.05 | 1.53 | |||||||||||||
1960 | 0.51 | 0.08 | 0.18 | 0.43 | 1.13 | a | 1.12 | 0.50 | 1.28 | 0.50 | 0.30 | 0.08 | 0.40 | 1.28 | a | |||||||||||
1961 | 0.00 | 0.30 | 0.05 | 0.73 | 0.52 | 0.66 | 1.73 | 0.78 | 0.92 | 0.43 | 0.00 | 0.39 | 1.73 | |||||||||||||
1962 | 0.16 | 0.08 | 0.61 | 0.14 | 1.30 | 1.20 | 2.11 | 1.41 | 0.37 | 0.15 | 0.30 | 0.02 | 2.11 | |||||||||||||
1963 | 0.14 | 0.05 | 0.50 | 0.62 | 0.62 | 0.70 | 0.74 | 0.95 | 0.15 | 0.40 | 0.00 | 0.10 | 0.95 | |||||||||||||
1964 | 0.39 | 0.13 | 0.20 | 0.70 | 1.00 | 1.90 | 0.95 | 1.10 | 2.00 | 0.08 | 0.35 | 0.55 | 2.00 | |||||||||||||
1965 | 0.23 | 0.00 | 0.14 | 0.90 | 1.02 | 0.58 | 1.99 | 1.00 | 0.82 | 0.45 | 0.18 | 0.17 | 1.99 | |||||||||||||
1966 | 0.04 | 0.80 | 0.60 | 1.48 | 0.28 | 1.63 | 1.35 | 0.50 | 0.20 | 0.72 | 0.00 | 0.15 | 1.63 | |||||||||||||
1967 | 0.80 | 0.30 | 0.30 | 0.75 | 0.75 | 2.25 | 0.15 | 0.29 | 0.42 | 1.17 | 0.03 | 0.57 | 2.25 | |||||||||||||
1968 | 0.00 | 0.00 | 0.50 | 1.30 | 0.75 | 0.45 | 0.55 | 1.51 | 1.50 | 0.05 | 0.22 | 0.13 | 1.51 | |||||||||||||
1969 | 0.16 | 0.52 | 0.09 | 0.45 | 0.67 | 1.70 | 1.05 | 0.45 | 0.68 | 0.20 | 0.10 | 0.19 | 1.70 | |||||||||||||
1970 | 0.20 | 0.10 | x | 0.41 | 1.30 | 0.45 | 1.30 | 0.95 | 0.17 | 1.48 | 0.22 | 0.40 | 0.10 | 1.48 | x | |||||||||||
1971 | 0.40 | 0.20 | 0.60 | 0.30 | 0.65 | 1.00 | 2.85 | 0.35 | 1.15 | 2.17 | 0.08 | 0.11 | 2.85 | |||||||||||||
1972 | 0.28 | 0.22 | 0.98 | 0.40 | 0.57 | 0.50 | 0.56 | 0.51 | 0.38 | 0.65 | 0.08 | 0.46 | 0.98 | |||||||||||||
1973 | 0.00 | 0.14 | 0.27 | 0.56 | 0.38 | 2.15 | 0.50 | 0.66 | 2.05 | 0.83 | 0.30 | 0.28 | 2.15 | |||||||||||||
1974 | 0.08 | 0.29 | 0.20 | 1.32 | 2.90 | 0.47 | 1.16 | 0.49 | 0.14 | 0.62 | 1.50 | 0.18 | 2.90 | |||||||||||||
1975 | 0.20 | 0.00 | 0.40 | 1.32 | ----- | z | 2.50 | d | 0.36 | ----- | z | 0.60 | 0.25 | 0.11 | 0.25 | ----- | z | |||||||||
1976 | 0.77 | 0.17 | 0.82 | 0.72 | 0.31 | 1.30 | 0.50 | 0.12 | 0.24 | 0.00 | 0.19 | 0.19 | 1.30 | |||||||||||||
1977 | 0.25 | 0.17 | 0.27 | 0.13 | 1.51 | 0.90 | 1.34 | 0.60 | 2.33 | 0.81 | 1.00 | 0.33 | 2.33 | |||||||||||||
1978 | 0.02 | 0.00 | 0.20 | 0.55 | 1.03 | 2.05 | 0.56 | 1.44 | 0.91 | 0.28 | 0.43 | 0.55 | 2.05 | |||||||||||||
1979 | 0.34 | b | 0.58 | 0.48 | 0.92 | 0.63 | 3.20 | 0.80 | 0.42 | 0.63 | 0.07 | 0.30 | 0.39 | 3.20 | b | |||||||||||
1980 | 0.74 | 0.14 | 0.00 | 0.00 | 0.80 | 2.50 | 1.60 | 1.28 | 0.66 | 1.72 | 0.41 | 0.10 | 2.50 | |||||||||||||
1981 | 0.08 | 0.33 | 0.65 | 0.48 | 0.53 | 1.85 | 1.80 | 0.57 | 1.80 | 0.39 | 0.30 | 0.13 | 1.85 | |||||||||||||
1982 | 0.26 | 0.15 | 0.42 | 0.12 | 0.92 | 1.40 | 1.22 | 0.65 | 0.40 | 1.37 | 0.30 | 0.41 | 1.40 | |||||||||||||
1983 | 0.68 | a | 0.32 | 0.90 | 0.25 | 0.75 | 2.35 | 1.32 | 0.80 | 0.90 | 0.40 | 0.40 | 0.50 | 2.35 | a | |||||||||||
1984 | 0.50 | i | 0.15 | a | 0.40 | 1.30 | 0.28 | 0.70 | 0.37 | 0.09 | 0.31 | 1.08 | 0.20 | 0.22 | 1.30 | j | ||||||||||
1985 | 0.17 | 0.09 | 0.48 | 0.13 | 0.75 | 0.39 | 0.35 | 0.84 | 0.57 | 1.58 | 0.70 | 0.11 | 1.58 | |||||||||||||
1986 | 0.11 | 0.50 | 0.07 | 0.92 | 0.34 | 0.70 | 3.20 | 0.67 | 1.10 | 0.90 | 2.00 | 0.07 | 3.20 | |||||||||||||
1987 | 0.00 | 0.45 | a | 0.13 | 0.08 | 2.45 | 1.30 | a | 1.50 | 1.40 | 0.62 | 0.02 | 0.00 | 0.29 | 2.45 | b | ||||||||||
1988 | 0.81 | 0.00 | 1.22 | 0.11 | 0.26 | 0.32 | 0.17 | a | 0.41 | 0.16 | 0.07 | 0.37 | 0.48 | 1.22 | a | |||||||||||
1989 | 0.57 | 0.11 | 0.46 | 0.44 | 0.70 | 0.45 | 1.22 | 1.86 | 0.65 | 0.12 | 0.24 | 0.02 | 1.86 | |||||||||||||
1990 | 0.07 | 0.20 | 0.39 | 0.60 | 0.50 | 1.97 | 0.65 | 0.75 | 0.60 | 0.59 | 0.08 | 0.21 | 1.97 | |||||||||||||
1991 | 0.00 | p | 0.30 | 0.17 | 1.25 | 1.20 | 0.77 | 0.65 | 0.48 | 1.30 | 0.98 | 0.37 | 0.18 | a | 1.30 | q | ||||||||||
1992 | 0.09 | 0.22 | 0.25 | 0.27 | 0.55 | 0.64 | 0.62 | 1.55 | 1.20 | 0.12 | 0.32 | 0.07 | 1.55 | |||||||||||||
1993 | 0.16 | 0.09 | 0.18 | 0.62 | 1.78 | 1.80 | 2.50 | g | 0.98 | 0.05 | 0.05 | 0.20 | 0.30 | 2.50 | g | |||||||||||
1994 | 0.15 | 0.15 | 0.10 | 0.50 | 0.80 | 1.30 | 1.60 | 0.27 | 1.82 | 1.73 | 0.50 | 0.07 | 1.82 | |||||||||||||
1995 | 0.17 | 0.10 | 0.50 | 0.38 | 1.01 | 0.95 | 1.75 | 0.40 | 0.40 | 0.52 | 0.17 | 0.15 | 1.75 | |||||||||||||
1996 | 0.50 | 0.30 | 0.45 | 0.28 | 1.05 | 0.80 | 1.52 | 0.73 | 0.50 | 1.25 | 0.55 | 0.35 | 1.52 | |||||||||||||
1997 | 0.45 | 0.03 | 0.30 | 2.37 | 0.39 | 0.47 | a | 3.50 | 0.23 | 0.47 | 1.66 | 0.20 | 0.12 | 3.50 | a | |||||||||||
1998 | 0.08 | 0.75 | 0.17 | 0.60 | 0.56 | 1.10 | 0.77 | 0.73 | 0.67 | 1.33 | 0.70 | 0.05 | 1.33 | |||||||||||||
1999 | 0.25 | a | 0.13 | 0.30 | 1.15 | 1.85 | 1.33 | 1.03 | 1.90 | 0.52 | 0.06 | 0.00 | 0.10 | 1.90 | a | |||||||||||
2000 | 0.05 | a | 1.20 | 0.12 | 0.60 | 0.85 | 3.90 | 2.12 | 1.75 | 1.00 | 1.26 | 0.15 | 0.00 | e | 3.90 | f | ||||||||||
2001 | 0.00 | b | 0.20 | 0.00 | c | 0.34 | ----- | z | 1.00 | 2.01 | ----- | z | 0.25 | 0.88 | b | 0.04 | a | 0.20 | b | ----- | z | |||||
2002 | 0.02 | f | 0.00 | b | 0.25 | 0.54 | 0.35 | a | 2.50 | a | 1.10 | e | 2.23 | f | 0.27 | 0.45 | 0.13 | 0.50 | a | 2.50 | v | |||||
2003 | 2.75 | 1.00 | 0.18 | b | 0.55 | 0.80 | 0.98 | 1.68 | 0.92 | 0.46 | 0.17 | 0.00 | a | 3.00 | c | 3.00 | f | |||||||||
2004 | ----- | z | 0.50 | 1.40 | a | 0.34 | 1.43 | 0.95 | 1.05 | 0.45 | 1.50 | a | 0.52 | 0.00 | b | 0.05 | a | ----- | z | |||||||
2005 | 0.00 | e | 0.00 | e | 0.00 | d | 0.45 | 1.70 | a | 2.05 | 0.20 | x | 0.31 | 0.04 | a | ----- | z | 0.45 | a | 0.00 | h | ----- | z | |||
2006 | 0.00 | c | ----- | z | 0.00 | b | 0.44 | 4.10 | x | 1.10 | 0.15 | 0.50 | b | 0.45 | 1.15 | a | 0.00 | 0.00 | c | ----- | z | |||||
2007 | 0.00 | a | 0.00 | d | 0.88 | b | 0.56 | 1.48 | 0.58 | b | 1.50 | a | 3.80 | w | 0.65 | 0.35 | 0.00 | a | 0.00 | c | ----- | z | ||||
2008 | 0.00 | f | 0.00 | d | 0.00 | a | 0.40 | 0.24 | 1.30 | 0.40 | 0.67 | 1.73 | 0.83 | 0.65 | 0.00 | l | 1.73 | w | ||||||||
2009 | 0.00 | g | 0.85 | d | 0.60 | b | 0.32 | 0.74 | 1.46 | 0.80 | 0.46 | 0.82 | 0.94 | 0.00 | 0.00 | h | 1.46 | u | ||||||||
2010 | ----- | z | ----- | z | 0.60 | 0.65 | 1.50 | 0.90 | 1.40 | 0.78 | 2.17 | 0.27 | a | 0.00 | b | ----- | z | ----- | z | |||||||
2011 | ----- | z | 0.25 | t | ----- | z | 0.27 | w | 0.74 | q | 0.85 | s | 1.70 | u | 1.74 | t | 0.80 | y | ----- | z | ----- | z | ----- | z | ----- | z |
2012 | ----- | z | 0.50 | 0.10 | 0.52 | 0.63 | 0.47 | ----- | z | 2.20 | 0.25 | 0.85 | 0.56 | a | 0.27 | e | ----- | z | ||||||||
2013 | 0.00 | a | 0.00 | b | ----- | z | 0.40 | b | 0.95 | 0.36 | 0.45 | 1.10 | 0.70 | 1.40 | 0.00 | a | ----- | z | ----- | z | ||||||
2014 | 0.00 | 0.00 | 0.00 | a | 1.52 | a | 0.55 | 0.50 | 1.45 | 0.84 | 0.55 | 0.06 | 0.14 | a | 0.00 | a | 1.52 | d | ||||||||
2015 | 0.00 | d | ----- | z | 0.04 | 0.20 | 1.45 | 0.70 | 1.10 | 1.15 | 0.12 | 0.54 | 0.20 | 0.25 | d | ----- | z | |||||||||
2016 | ----- | z | 0.00 | b | 0.00 | d | 1.00 | 0.42 | 0.67 | 0.94 | 2.38 | 0.56 | 0.44 | 0.25 | 0.00 | f | ----- | z | ||||||||
2017 | 0.00 | e | 0.10 | b | 0.57 | a | 0.80 | 0.35 | 2.40 | 0.65 | 2.03 | 1.05 | 0.00 | 0.00 | d | 0.00 | g | 2.40 | s | |||||||
2018 | 0.00 | a | 0.00 | g | 0.00 | e | 0.00 | a | 0.63 | 1.25 | 0.93 | 0.17 | 0.80 | 0.65 | 0.25 | e | 0.00 | f | 1.25 | y | ||||||
2019 | 0.00 | h | ----- | z | 0.00 | c | 0.63 | b | 0.45 | 1.50 | 0.63 | 1.52 | 5.70 | 0.77 | e | 0.00 | e | 0.00 | g | ----- | z | |||||
2020 | ----- | z | 0.00 | c | 0.00 | d | 0.10 | c | 0.24 | 0.84 | 1.50 | 0.73 | 0.13 | 0.00 | a | 0.07 | ----- | z | ----- | z | ||||||
2021 | 0.00 | j | 0.00 | c | 0.06 | c | 0.25 | d | 1.40 | 1.26 | 0.13 | 1.20 | 1.60 | x | 1.90 | 0.39 | b | 0.00 | i | ----- | z | |||||
2022 | 0.00 | d | 0.00 | 0.10 | b | 0.70 | d | 2.05 | 1.65 | 0.65 | 0.36 | 0.37 | 0.00 | ----- | z | ----- | z | ----- | z | |||||||
2023 | ----- | z | ----- | z | ----- | z | 0.24 | e | 2.20 | 1.50 | 0.26 | 0.63 | 1.52 | 0.64 | b | 0.00 | f | 0.00 | b | ----- | z | |||||
2024 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.26 | 0.23 | 0.33 | 0.59 | 0.89 | 1.29 | 1.07 | 0.91 | 0.84 | 0.63 | 0.29 | 0.25 | 1.95 | |||||||||||||
S.D. | 0.41 | 0.26 | 0.31 | 0.45 | 0.56 | 0.78 | 0.70 | 0.66 | 0.80 | 0.55 | 0.34 | 0.40 | 0.69 | |||||||||||||
SKEW | 4.29 | 1.73 | 1.25 | 1.31 | 1.31 | 1.33 | 1.22 | 1.76 | 3.48 | 0.86 | 2.66 | 5.77 | 0.97 | |||||||||||||
MAX | 2.75 | 1.20 | 1.40 | 2.37 | 2.90 | 3.90 | 3.50 | 3.87 | 5.70 | 2.17 | 2.00 | 3.00 | 3.90 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.23 | 0.32 | 0.13 | 0.09 | 0.04 | 0.00 | 0.00 | 0.00 | 0.95 | |||||||||||||
YRS | 57 | 64 | 69 | 72 | 69 | 72 | 68 | 68 | 70 | 71 | 69 | 60 | 40 |