YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.04 | a | 0.97 | 0.08 | ----- | z | ||
1957 | 0.09 | 0.37 | 0.64 | 1.37 | 0.86 | 2.56 | 1.59 | 1.17 | a | 0.34 | 1.20 | 0.49 | 0.10 | 2.56 | a | |||||||||||
1958 | 0.06 | 0.21 | 0.23 | 0.67 | 0.74 | 1.19 | 1.36 | 0.85 | 0.73 | 0.75 | 0.29 | 0.04 | 1.36 | |||||||||||||
1959 | 0.21 | 0.39 | 0.06 | 0.19 | 1.56 | 2.57 | 1.31 | 1.55 | 0.36 | 0.97 | 0.16 | 0.83 | 2.57 | |||||||||||||
1960 | 0.58 | 0.09 | 0.45 | 1.11 | 2.31 | 0.82 | 0.79 | 1.90 | 1.23 | 0.34 | 0.87 | 0.42 | 2.31 | |||||||||||||
1961 | 0.07 | 0.42 | 0.79 | 0.89 | 1.03 | 1.13 | 1.44 | 1.29 | 1.15 | 1.21 | 2.05 | 0.62 | 2.05 | |||||||||||||
1962 | 0.07 | 0.53 | 1.39 | 1.04 | 1.69 | 0.88 | 2.36 | 1.45 | 1.06 | 0.35 | 0.24 | 0.13 | 2.36 | |||||||||||||
1963 | 0.14 | 0.21 | 0.47 | 0.78 | 1.59 | 1.16 | 3.07 | 1.44 | 1.66 | 1.25 | 0.30 | 0.54 | 3.07 | |||||||||||||
1964 | 0.18 | 0.04 | 0.44 | 1.57 | 3.12 | 0.29 | 1.20 | 1.27 | 0.79 | 0.26 | 0.45 | 0.26 | 3.12 | |||||||||||||
1965 | 0.23 | 0.69 | 0.96 | 0.98 | 1.27 | 1.79 | 1.69 | 1.17 | 3.02 | 0.29 | 0.67 | 0.79 | 3.02 | |||||||||||||
1966 | 0.35 | 0.67 | 0.35 | 0.58 | 0.63 | 2.37 | 0.93 | 2.25 | 0.65 | 1.67 | 0.10 | 0.70 | 2.37 | |||||||||||||
1967 | 0.25 | 0.20 | 0.35 | 1.76 | 1.43 | 1.38 | 3.21 | 3.42 | 0.31 | 0.74 | 0.07 | 0.37 | 3.42 | |||||||||||||
1968 | 0.32 | 0.10 | 1.54 | 3.24 | 0.99 | 1.19 | 1.69 | 0.45 | 1.57 | 1.89 | 0.17 | 0.27 | 3.24 | |||||||||||||
1969 | 0.49 | 0.26 | 0.50 | 0.75 | 0.72 | 2.10 | 0.52 | 0.31 | 0.51 | 0.63 | 0.17 | 0.47 | 2.10 | |||||||||||||
1970 | 0.15 | 0.06 | 0.35 | 1.05 | 0.98 | 0.72 | 0.59 | 1.12 | 0.53 | 1.87 | 1.45 | 0.37 | 1.87 | |||||||||||||
1971 | 0.20 | 0.53 | 0.26 | 0.44 | 1.68 | 1.44 | 1.06 | 2.02 | 1.10 | 1.77 | 1.24 | 0.21 | 2.02 | |||||||||||||
1972 | 0.38 | 0.14 | 0.65 | 1.24 | 1.26 | 1.50 | 2.41 | 0.47 | 1.21 | 0.61 | 1.11 | 0.64 | 2.41 | |||||||||||||
1973 | 0.42 | 0.14 | 0.68 | 0.84 | 0.93 | 0.74 | 1.19 | 1.09 | 1.18 | 0.47 | 2.33 | 0.23 | 2.33 | |||||||||||||
1974 | 0.00 | 0.31 | 0.23 | 0.77 | 0.88 | 1.72 | 0.76 | 1.08 | 0.26 | 0.52 | 0.45 | 0.11 | 1.72 | |||||||||||||
1975 | 0.54 | 0.18 | 0.78 | 1.86 | 0.60 | 0.94 | 0.44 | 0.76 | 0.35 | 0.45 | 2.14 | 0.17 | 2.14 | |||||||||||||
1976 | 0.26 | 0.24 | 0.97 | 0.53 | 0.66 | 1.57 | 2.46 | 1.16 | 0.92 | 0.15 | 0.11 | 0.14 | 2.46 | |||||||||||||
1977 | 0.29 | 0.76 | 0.91 | 0.68 | 1.57 | 2.06 | 2.97 | 1.69 | 0.69 | 1.16 | 0.76 | 0.43 | 2.97 | |||||||||||||
1978 | 0.09 | 0.16 | 0.24 | 1.12 | 0.65 | 0.81 | 0.76 | 1.06 | 3.64 | 0.35 | 0.80 | 0.38 | 3.64 | |||||||||||||
1979 | 0.52 | 0.53 | 0.77 | 0.27 | 1.07 | 1.97 | 1.03 | 2.25 | 1.49 | 1.51 | 0.82 | 0.00 | 2.25 | |||||||||||||
1980 | 0.12 | 0.44 | 0.26 | 0.43 | 1.60 | 1.16 | 0.74 | 0.91 | 1.79 | 0.47 | 0.15 | 0.10 | 1.79 | |||||||||||||
1981 | 0.07 | 1.07 | 1.02 | 1.50 | 0.68 | 1.67 | 3.92 | 5.29 | 0.33 | 0.90 | 1.77 | 0.73 | 5.29 | |||||||||||||
1982 | 0.39 | 0.11 | 0.40 | 0.67 | 0.90 | 0.27 | 0.42 | 1.48 | 1.77 | 1.19 | 1.13 | 1.93 | 1.93 | |||||||||||||
1983 | 0.14 | 0.36 | 0.95 | 0.61 | 0.76 | 1.31 | 1.96 | 2.40 | 1.12 | 1.61 | 1.03 | 0.40 | 2.40 | |||||||||||||
1984 | 0.31 | 0.23 | 1.00 | 0.94 | 0.71 | 1.10 | 2.38 | 3.08 | 1.22 | 2.33 | 0.00 | 1.27 | 3.08 | |||||||||||||
1985 | 0.27 | 0.05 | 1.48 | 1.73 | 1.15 | 1.13 | 2.26 | 2.22 | 1.23 | 1.89 | 0.50 | 1.79 | 2.26 | |||||||||||||
1986 | 0.29 | 0.37 | 0.87 | 1.57 | 1.39 | 4.06 | 0.93 | 1.41 | 1.47 | 0.36 | 0.21 | 0.11 | 4.06 | |||||||||||||
1987 | 0.25 | a | 0.00 | 0.27 | 0.06 | 0.37 | 1.83 | 0.96 | 1.10 | 0.93 | 0.27 | 0.91 | 0.28 | 1.83 | a | |||||||||||
1988 | 0.87 | 0.32 | 0.57 | 0.61 | 1.13 | 1.15 | 1.77 | 1.58 | 0.97 | 0.21 | 0.67 | ----- | z | ----- | z | |||||||||||
1989 | 0.32 | 0.27 | 0.71 | 1.03 | 0.54 | 1.60 | 1.35 | 0.52 | 0.52 | 0.17 | 0.62 | 0.13 | a | 1.60 | a | |||||||||||
1990 | 0.06 | 0.30 | 0.93 | 1.45 | 1.13 | 2.09 | 2.63 | 1.52 | 0.82 | 0.68 | 2.00 | 0.00 | e | 2.63 | e | |||||||||||
1991 | 0.13 | 0.50 | 0.47 | a | 0.43 | 1.88 | 1.02 | 2.53 | 0.76 | 2.54 | 0.82 | 2.30 | b | 0.30 | c | 2.54 | f | |||||||||
1992 | 0.00 | c | 0.50 | 0.00 | g | 0.72 | b | 1.22 | 2.52 | 2.71 | 1.73 | a | 4.15 | 1.04 | 0.99 | 0.59 | 4.15 | m | ||||||||
1993 | 1.00 | a | 1.10 | 0.60 | c | 0.72 | d | 2.90 | 4.60 | 2.58 | a | 2.40 | 1.66 | 0.00 | c | 1.72 | ----- | z | ----- | z | ||||||
1994 | ----- | z | 0.00 | a | 0.00 | e | 1.09 | 0.49 | 2.20 | 0.97 | 3.95 | 0.94 | 1.15 | 1.20 | a | 0.00 | b | ----- | z | |||||||
1995 | 1.50 | c | 0.00 | a | 1.15 | d | 0.78 | a | 0.98 | p | 1.15 | 1.04 | k | 1.20 | 0.92 | 1.64 | a | 0.00 | c | 0.00 | d | ----- | z | |||
1996 | 1.24 | c | 0.00 | 0.00 | b | ----- | z | 0.80 | 1.52 | 0.55 | 0.90 | 0.52 | 1.30 | 2.60 | b | 0.00 | j | ----- | z | |||||||
1997 | 0.90 | g | 0.00 | b | 0.50 | c | 0.50 | d | 0.80 | a | 4.60 | 4.20 | a | 2.50 | 1.05 | n | 1.00 | a | ----- | z | 0.00 | f | ----- | z | ||
1998 | 0.00 | h | 1.00 | 0.75 | e | 0.55 | a | 1.10 | 1.72 | 2.00 | 0.80 | 0.75 | 0.97 | 0.09 | 0.00 | c | 2.00 | q | ||||||||
1999 | 0.00 | g | 0.00 | e | 0.00 | a | 1.40 | 1.15 | 1.15 | 1.80 | 2.00 | 0.42 | 0.32 | a | 0.35 | a | 0.00 | c | 2.00 | r | ||||||
2000 | 0.00 | b | 0.00 | c | 0.32 | a | 0.82 | a | 1.70 | 0.75 | 1.45 | 0.90 | 0.30 | 0.45 | 5.00 | a | 0.00 | g | 5.00 | o | ||||||
2001 | 0.25 | c | 0.00 | e | 0.00 | b | 2.75 | 0.70 | 0.95 | 0.50 | 1.20 | 1.20 | 0.30 | 0.00 | e | 0.80 | a | 2.75 | p | |||||||
2002 | ----- | z | 0.00 | d | 0.00 | b | 0.77 | g | 1.70 | 2.14 | 1.35 | 1.76 | 1.04 | 0.93 | 0.22 | a | 0.08 | ----- | z | |||||||
2003 | 0.00 | a | 0.00 | e | 0.00 | c | 1.50 | 1.30 | 0.75 | 1.35 | 0.10 | 1.55 | 0.50 | 0.00 | b | ----- | z | ----- | z | |||||||
2004 | ----- | z | ----- | z | ----- | z | ----- | z | 1.40 | 2.40 | 1.65 | 0.65 | 1.70 | 1.00 | 0.65 | 0.20 | ----- | z | ||||||||
2005 | 0.45 | b | 0.70 | ----- | z | 1.40 | 1.00 | 1.05 | 1.00 | 1.45 | 2.70 | 2.00 | 1.65 | c | 0.00 | g | ----- | z | ||||||||
2006 | ----- | z | 0.00 | b | 0.20 | b | 2.30 | 0.60 | 1.75 | 0.90 | a | 1.15 | c | 1.00 | 0.00 | 0.61 | 1.00 | ----- | z | |||||||
2007 | 0.00 | c | 0.00 | d | 0.40 | c | 1.69 | a | 0.95 | 1.00 | 1.22 | a | 3.34 | c | 0.70 | 1.49 | 0.10 | 0.35 | a | 3.34 | p | |||||
2008 | 0.11 | 0.13 | i | 0.25 | f | 1.01 | h | 1.13 | h | 2.03 | g | 1.27 | i | 1.46 | h | 1.21 | e | 0.75 | h | 1.22 | j | 0.38 | i | ----- | z | |
2009 | 0.16 | l | 0.47 | c | 0.52 | d | 0.99 | h | 0.76 | i | 1.91 | e | 0.56 | i | 2.11 | f | 1.75 | b | 1.76 | i | 0.56 | g | 0.97 | i | ----- | z |
2010 | 0.72 | c | 0.34 | f | 0.52 | d | 0.59 | d | 0.91 | i | 3.57 | h | 1.73 | j | 1.77 | i | 2.79 | i | 0.84 | j | 0.84 | j | 0.74 | j | ----- | z |
2011 | 0.36 | g | 0.62 | e | 0.63 | e | 0.72 | d | 1.47 | f | 1.32 | d | 2.06 | f | 0.33 | d | 0.12 | e | 0.22 | e | 0.11 | g | 0.27 | e | ----- | z |
2012 | 0.30 | g | 1.73 | e | 0.79 | e | 1.04 | d | 3.46 | e | 1.87 | b | 0.94 | c | 0.58 | f | 0.32 | d | 0.44 | b | 0.30 | f | 0.78 | d | ----- | z |
2013 | 0.42 | b | 1.10 | e | 0.60 | d | 0.89 | d | 2.70 | d | 3.85 | e | 1.84 | c | 0.35 | b | 0.89 | f | 1.45 | c | 0.35 | 0.38 | g | ----- | z | |
2014 | 0.22 | c | 0.69 | c | 0.37 | e | 1.72 | c | 1.13 | c | 4.87 | d | 1.56 | d | 0.77 | d | 0.94 | c | 0.46 | 0.15 | d | 0.46 | d | ----- | z | |
2015 | 0.12 | b | 0.11 | a | 0.60 | b | 0.61 | c | 1.20 | f | 1.64 | d | 1.35 | d | 1.08 | c | 1.42 | a | 0.75 | a | 2.03 | e | 0.35 | d | ----- | z |
2016 | 0.08 | b | 0.31 | e | 0.54 | c | 0.83 | a | 1.24 | c | 1.65 | c | 2.26 | c | 3.95 | c | 1.92 | d | 1.16 | b | 0.60 | d | 0.92 | e | ----- | z |
2017 | 0.16 | e | 0.51 | b | 0.23 | c | 1.31 | c | 1.60 | c | 1.11 | c | 1.95 | 2.00 | 0.62 | 1.95 | b | 0.15 | 0.16 | 2.00 | u | |||||
2018 | 0.64 | a | 0.46 | a | 0.65 | 1.72 | b | 1.32 | c | 2.57 | c | 1.32 | d | 0.74 | b | 2.67 | 1.09 | c | 0.41 | f | 0.74 | c | ----- | z | ||
2019 | 0.44 | b | 0.43 | h | 0.92 | b | 1.62 | d | 1.78 | e | 1.03 | b | 1.84 | d | 2.13 | 2.40 | e | 0.68 | c | 0.43 | c | 0.90 | d | ----- | z | |
2020 | 0.62 | g | 0.63 | a | 1.42 | a | 0.60 | a | 3.50 | c | 4.75 | b | 6.30 | b | 1.40 | d | 1.50 | a | 0.68 | a | 0.37 | 0.40 | c | ----- | z | |
2021 | 0.25 | a | 0.16 | 1.16 | c | 0.85 | a | 1.50 | b | 1.22 | 1.00 | 2.05 | c | 0.97 | 1.35 | 0.70 | 0.62 | a | 2.05 | k | ||||||
2022 | 0.37 | b | 0.01 | d | 1.19 | b | 0.62 | b | 0.85 | c | 0.35 | a | 1.84 | c | 2.32 | b | 0.15 | a | 0.03 | a | 0.36 | b | 0.70 | c | ----- | z |
2023 | 0.65 | 0.71 | a | 0.35 | a | 1.81 | e | 1.85 | b | 0.97 | a | 0.49 | 0.77 | a | 2.20 | a | 1.68 | 0.05 | 1.84 | c | 2.20 | o | ||||
2024 | 0.07 | a | 0.58 | 1.60 | b | 1.13 | s | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.31 | 0.35 | 0.61 | 1.06 | 1.30 | 1.70 | 1.67 | 1.55 | 1.21 | 0.90 | 0.82 | 0.46 | 2.55 | |||||||||||||
S.D. | 0.30 | 0.35 | 0.40 | 0.60 | 0.69 | 1.05 | 1.03 | 0.98 | 0.82 | 0.58 | 0.88 | 0.45 | 0.80 | |||||||||||||
SKEW | 1.89 | 1.41 | 0.56 | 1.22 | 1.53 | 1.58 | 1.84 | 1.45 | 1.37 | 0.44 | 2.17 | 1.60 | 1.42 | |||||||||||||
MAX | 1.50 | 1.73 | 1.60 | 3.24 | 3.50 | 4.87 | 6.30 | 5.29 | 4.15 | 2.33 | 5.00 | 1.93 | 5.29 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.06 | 0.37 | 0.27 | 0.42 | 0.10 | 0.12 | 0.00 | 0.00 | 0.00 | 1.36 | |||||||||||||
YRS | 57 | 64 | 64 | 62 | 61 | 65 | 62 | 63 | 64 | 65 | 61 | 57 | 32 |