YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.80 | 0.40 | a | 0.50 | 0.78 | 0.84 | 0.03 | ----- | z | |||||
1949 | 0.30 | 0.29 | 0.32 | 0.37 | 1.12 | 1.21 | 2.35 | 0.05 | 0.21 | 1.30 | 0.24 | 0.38 | 2.35 | |||||||||||||
1950 | 0.35 | 0.04 | 0.32 | 0.28 | 1.05 | 1.01 | 0.25 | 0.10 | 0.42 | 0.38 | g | ----- | z | ----- | z | ----- | z | |||||||||
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | 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 | 1.97 | 0.82 | 0.12 | 0.37 | 0.03 | ----- | z | |||||
1963 | 0.06 | 0.17 | 0.32 | 1.17 | 1.73 | 2.22 | 0.52 | 1.30 | 1.35 | 0.27 | 0.14 | 0.04 | 2.22 | |||||||||||||
1964 | 0.30 | 0.08 | 0.22 | 1.55 | 1.25 | 3.05 | 0.75 | 0.48 | 0.48 | 0.08 | 0.40 | 0.18 | 3.05 | |||||||||||||
1965 | 0.18 | 0.10 | 0.24 | 1.30 | 0.80 | 1.60 | 1.73 | 0.87 | 0.72 | 0.80 | 0.13 | 0.35 | 1.73 | |||||||||||||
1966 | 0.20 | 0.30 | 1.17 | 0.34 | 0.47 | 0.68 | 0.53 | 2.93 | 0.39 | 0.76 | 0.09 | 0.15 | 2.93 | |||||||||||||
1967 | 0.20 | 0.21 | 0.17 | 1.23 | 0.94 | 1.40 | 0.32 | 0.74 | 1.22 | 0.48 | 0.08 | 0.28 | 1.40 | |||||||||||||
1968 | 0.30 | 0.01 | 0.27 | 1.24 | 0.99 | 0.98 | 0.55 | 0.58 | 2.22 | 0.33 | 0.33 | 0.41 | 2.22 | |||||||||||||
1969 | 0.22 | 1.08 | 0.08 | 1.08 | 0.64 | 2.64 | 0.92 | 0.78 | a | 0.50 | 0.25 | 0.00 | 0.31 | 2.64 | a | |||||||||||
1970 | 0.10 | 0.10 | 1.15 | 0.75 | 0.90 | 0.63 | 0.74 | 0.05 | 4.46 | 0.42 | 0.45 | 0.07 | 4.46 | |||||||||||||
1971 | ----- | z | ----- | z | 0.11 | 0.17 | 2.05 | 1.60 | 0.93 | 0.80 | 0.29 | 0.86 | 0.13 | 1.00 | ----- | z | ||||||||||
1972 | ----- | z | ----- | z | ----- | z | 0.27 | ----- | z | 1.21 | 1.95 | 0.71 | 0.30 | 0.46 | 0.12 | 0.18 | ----- | z | ||||||||
1973 | 0.00 | d | 0.04 | 1.42 | 0.79 | 0.52 | 0.45 | 2.30 | 0.84 | 2.30 | 0.77 | 0.35 | 0.16 | 2.30 | d | |||||||||||
1974 | 0.11 | 0.13 | 0.18 | 1.10 | 1.05 | 0.27 | 1.22 | 1.00 | 0.09 | 0.75 | 0.40 | 0.02 | 1.22 | |||||||||||||
1975 | 0.72 | 0.39 | 0.83 | a | 0.85 | 0.55 | 4.60 | 0.87 | 0.90 | 0.37 | 0.35 | 0.25 | 0.24 | 4.60 | a | |||||||||||
1976 | 0.48 | 0.15 | 0.35 | 0.67 | 1.00 | 1.98 | 0.10 | 0.40 | 0.36 | 0.05 | 0.12 | 0.19 | 1.98 | |||||||||||||
1977 | 0.35 | 1.00 | 1.42 | 0.20 | 0.89 | 1.55 | 0.68 | 1.21 | 1.09 | 1.05 | 0.42 | 0.15 | 1.55 | |||||||||||||
1978 | 0.02 | 0.18 | 0.75 | 0.60 | 1.06 | 2.52 | 1.16 | 0.61 | ----- | z | 0.17 | 0.45 | ----- | z | ----- | z | ||||||||||
1979 | 0.22 | c | 0.18 | 0.50 | 1.28 | 0.60 | 1.90 | ----- | z | 0.86 | 0.70 | 0.00 | f | 0.30 | 0.15 | a | ----- | z | ||||||||
1980 | 0.41 | a | 0.30 | a | ----- | z | ----- | z | ----- | z | ----- | z | 1.05 | 1.72 | 0.41 | 0.85 | 0.12 | 0.01 | ----- | z | ||||||
1981 | 0.00 | e | 0.20 | h | 0.29 | 0.53 | 0.91 | 0.67 | 5.09 | 0.82 | 1.49 | 1.12 | 0.04 | e | ----- | z | ----- | z | ||||||||
1982 | ----- | z | 0.00 | f | ----- | z | 1.00 | u | 0.92 | 0.94 | ----- | z | 1.12 | 0.60 | 1.60 | 0.47 | 0.30 | ----- | z | |||||||
1983 | 0.06 | a | 0.20 | 0.14 | 0.15 | 0.68 | 2.45 | 1.25 | 0.55 | 0.16 | 1.05 | a | 0.27 | b | 0.16 | 2.45 | d | |||||||||
1984 | 0.41 | 0.70 | 0.92 | 0.62 | 0.60 | 0.56 | 1.52 | 0.55 | b | 0.84 | ----- | z | 0.08 | 0.08 | ----- | z | ||||||||||
1985 | 0.08 | 0.04 | c | 0.23 | 0.15 | 1.08 | 0.80 | 0.63 | 1.53 | 0.46 | 0.30 | 0.57 | 0.28 | 1.53 | c | |||||||||||
1986 | 0.36 | 0.63 | 0.05 | 2.25 | 0.65 | h | 1.12 | 0.90 | 0.82 | 0.63 | 0.60 | 0.48 | a | 0.00 | 2.25 | i | ||||||||||
1987 | 0.07 | 0.50 | 1.00 | 0.08 | 1.50 | 0.44 | 1.36 | a | 1.42 | 0.35 | 0.04 | 0.16 | 0.11 | 1.50 | a | |||||||||||
1988 | 0.54 | a | 0.14 | 1.00 | c | 0.02 | 0.75 | 0.58 | 1.35 | 1.67 | 1.30 | 0.18 | 0.27 | 0.83 | 1.67 | d | ||||||||||
1989 | 0.65 | 0.13 | 0.93 | a | 0.58 | 0.44 | 0.52 | 2.00 | 1.27 | 0.42 | 0.30 | 0.35 | 0.02 | 2.00 | a | |||||||||||
1990 | 0.20 | c | 0.43 | c | 0.43 | b | 0.75 | 0.11 | 1.20 | 1.35 | 1.58 | 0.85 | 0.66 | 0.02 | 0.23 | 1.58 | h | |||||||||
1991 | 0.04 | 0.40 | 0.40 | 1.10 | 3.60 | 1.63 | 2.25 | 0.41 | 1.00 | 1.45 | 0.20 | 0.15 | 3.60 | |||||||||||||
1992 | 0.60 | 0.30 | 0.77 | 0.50 | 1.15 | 1.30 | 1.10 | 2.25 | 0.60 | 0.30 | 0.45 | 0.08 | 2.25 | |||||||||||||
1993 | 0.50 | 0.15 | 0.33 | 0.47 | 0.95 | 2.12 | 1.13 | 0.91 | 0.32 | 0.14 | 1.90 | 0.30 | 2.12 | |||||||||||||
1994 | 0.50 | 0.30 | 0.35 | 0.79 | 0.55 | 0.30 | 2.90 | 0.50 | 0.75 | 1.83 | 0.50 | 0.09 | 2.90 | |||||||||||||
1995 | 0.32 | 0.30 | 1.53 | 0.69 | 1.30 | 0.42 | 1.70 | 1.27 | 0.54 | 1.45 | 0.15 | 0.25 | 1.70 | |||||||||||||
1996 | 1.40 | d | 0.85 | a | 0.99 | b | 0.20 | 1.00 | 2.14 | 0.84 | 0.30 | 1.02 | 1.20 | 0.60 | 0.32 | a | 2.14 | h | ||||||||
1997 | 1.04 | e | 0.30 | e | 1.05 | b | 2.00 | a | 1.00 | 0.70 | 2.30 | 0.55 | 2.05 | 0.62 | 0.50 | 0.25 | 2.30 | m | ||||||||
1998 | 0.19 | 0.47 | 0.57 | 2.50 | 0.60 | f | 3.20 | 1.00 | 1.82 | 0.65 | 2.13 | 0.95 | 0.08 | a | 3.20 | g | ||||||||||
1999 | 0.64 | a | 0.18 | 1.20 | 0.85 | 2.05 | 0.75 | 0.94 | 0.92 | 1.90 | 0.43 | 0.00 | 0.07 | 2.05 | a | |||||||||||
2000 | 0.18 | a | 0.75 | 1.00 | 0.53 | 0.98 | 1.37 | 2.37 | 1.04 | 1.18 | 0.75 | 0.71 | 0.24 | 2.37 | a | |||||||||||
2001 | 0.09 | 0.25 | 0.03 | 1.00 | 0.59 | a | 0.83 | 0.78 | 1.05 | 0.55 | 0.70 | a | 0.00 | c | ----- | z | ----- | z | ||||||||
2002 | ----- | z | 0.00 | ----- | z | ----- | z | ----- | z | ----- | z | 0.77 | g | 1.00 | ----- | z | ----- | z | 0.00 | ----- | z | ----- | z | |||
2003 | ----- | z | 0.00 | 0.00 | ----- | z | ----- | z | 0.00 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||
2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | b | 1.70 | 1.28 | 0.00 | 1.00 | ----- | z | ||||
2005 | 2.00 | a | 0.22 | 0.50 | 0.50 | a | 0.75 | c | 1.60 | 0.95 | 1.80 | 0.81 | 0.94 | 0.41 | b | 1.20 | 2.00 | g | ||||||||
2006 | 1.00 | 0.15 | c | 1.00 | 0.44 | 0.72 | 0.60 | 0.73 | 1.13 | 0.93 | 0.48 | ----- | z | 0.60 | a | ----- | z | |||||||||
2007 | 0.06 | 0.35 | 0.80 | b | 1.00 | b | 2.25 | 2.00 | y | 0.50 | 1.07 | 0.76 | 0.42 | h | ----- | z | 0.30 | h | ----- | z | ||||||
2008 | ----- | z | 0.17 | a | 0.45 | 0.50 | a | 0.36 | 1.54 | 1.40 | 1.00 | 1.80 | 1.25 | 0.30 | b | ----- | z | ----- | z | |||||||
2009 | 0.00 | c | 0.20 | c | 0.10 | h | 0.70 | b | 0.20 | a | 0.93 | 0.58 | 0.50 | 1.15 | 0.83 | a | ----- | z | ----- | z | ----- | z | ||||
2010 | 0.00 | c | ----- | z | ----- | z | 0.30 | 1.12 | 0.72 | 1.70 | ----- | z | 2.92 | 0.80 | a | ----- | z | ----- | z | ----- | z | |||||
2011 | ----- | z | ----- | z | ----- | z | ----- | z | 1.00 | y | 2.00 | y | 1.93 | x | 0.77 | x | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2012 | 0.30 | 0.50 | 0.25 | b | 0.95 | a | 0.91 | 0.40 | ----- | z | 0.45 | 0.32 | 0.63 | 0.15 | 0.00 | ----- | z | |||||||||
2013 | ----- | z | 0.00 | c | 0.00 | d | 0.00 | b | 0.00 | p | 0.20 | p | ----- | z | 0.50 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2014 | ----- | z | ----- | z | ----- | z | 1.50 | f | 1.25 | 0.88 | e | 1.25 | a | 3.00 | 0.47 | 0.35 | a | 0.20 | e | ----- | z | ----- | z | |||
2015 | 0.56 | b | ----- | z | ----- | z | ----- | z | 2.00 | b | ----- | z | ----- | z | ----- | z | 0.10 | 0.80 | a | ----- | z | ----- | z | ----- | z | |
2016 | ----- | z | 0.50 | ----- | z | ----- | z | 1.20 | 2.25 | a | 2.50 | 4.00 | 1.60 | 0.48 | 1.15 | 0.60 | b | ----- | z | |||||||
2017 | 0.00 | f | 0.20 | b | ----- | z | 0.38 | a | 1.05 | 0.60 | a | 0.91 | 0.50 | 1.70 | 0.27 | 0.02 | ----- | z | ----- | z | ||||||
2018 | 0.00 | b | 0.19 | a | 0.05 | c | 0.00 | b | 2.20 | 1.28 | b | 1.69 | a | 0.22 | b | 1.40 | b | 1.44 | 0.15 | c | ----- | z | ----- | z | ||
2019 | 0.00 | d | ----- | z | ----- | z | 0.35 | a | ----- | z | 1.14 | 2.00 | 1.27 | d | 1.14 | g | 1.00 | j | 0.08 | g | 1.13 | i | ----- | z | ||
2020 | 0.28 | f | 0.05 | g | 0.00 | e | 0.64 | j | 0.98 | j | 1.10 | e | 1.33 | k | 1.20 | f | 0.67 | g | 0.42 | g | 0.00 | l | 0.23 | j | ----- | z |
2021 | 0.30 | f | 0.08 | g | 0.03 | e | 0.25 | g | 0.27 | l | 0.93 | h | 0.61 | i | 0.93 | l | 1.01 | g | 2.60 | g | 0.15 | f | 1.20 | i | ----- | z |
2022 | 0.33 | g | 0.39 | e | ----- | z | ----- | z | 2.40 | m | 1.14 | e | 0.53 | g | 0.68 | f | 0.22 | j | 0.05 | i | 0.70 | l | 0.82 | l | ----- | z |
2023 | 0.21 | j | 0.10 | d | 0.60 | d | 0.49 | f | 1.40 | f | 2.10 | h | 0.91 | m | 2.70 | e | 0.78 | f | 0.29 | e | 0.12 | h | 1.67 | n | ----- | z |
2024 | 0.00 | p | 0.10 | f | 0.15 | e | 1.04 | m | 0.58 | x | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.35 | 0.29 | 0.54 | 0.72 | 1.06 | 1.29 | 1.31 | 1.06 | 0.95 | 0.71 | 0.33 | 0.26 | 2.34 | |||||||||||||
S.D. | 0.39 | 0.25 | 0.43 | 0.55 | 0.61 | 0.86 | 0.85 | 0.78 | 0.79 | 0.48 | 0.34 | 0.28 | 0.85 | |||||||||||||
SKEW | 2.21 | 1.43 | 0.60 | 1.24 | 1.80 | 1.41 | 1.93 | 1.55 | 2.05 | 0.82 | 2.40 | 1.85 | 1.26 | |||||||||||||
MAX | 2.00 | 1.08 | 1.53 | 2.50 | 3.60 | 4.60 | 5.09 | 4.00 | 4.46 | 2.13 | 1.90 | 1.20 | 4.60 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.11 | 0.00 | 0.10 | 0.00 | 0.09 | 0.04 | 0.00 | 0.00 | 1.22 | |||||||||||||
YRS | 47 | 51 | 50 | 50 | 49 | 54 | 51 | 57 | 55 | 53 | 51 | 44 | 26 |