YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1950 | ----- | z | 0.55 | 1.95 | j | 0.29 | 0.42 | 0.87 | 0.20 | 0.04 | 0.18 | 0.75 | 1.17 | j | 0.55 | ----- | z | |||||||||
1951 | 0.72 | 0.62 | 0.60 | 0.35 | 0.40 | 0.81 | 0.50 | 0.32 | 0.49 | ----- | 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 | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | 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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | b | 0.31 | b | 0.20 | a | 0.67 | v | ----- | z | ----- | z |
1989 | 0.78 | g | ----- | z | 1.53 | f | 0.66 | c | 1.35 | b | 0.33 | 0.14 | 1.43 | b | 0.46 | a | 1.00 | e | 1.00 | k | 1.20 | e | ----- | z | ||
1990 | 0.93 | r | 0.15 | t | 0.40 | a | 1.05 | a | 0.95 | 1.44 | 0.60 | 1.06 | 0.00 | 0.81 | 0.41 | a | 0.71 | h | ----- | z | ||||||
1991 | 0.33 | c | 0.70 | d | 0.18 | d | 0.34 | a | 0.86 | 0.63 | d | 0.46 | 0.24 | 0.00 | 0.69 | c | 0.71 | c | 0.70 | f | ----- | z | ||||
1992 | 0.99 | b | 0.84 | a | 0.61 | 0.40 | 0.36 | 1.40 | c | 0.57 | a | 2.05 | a | 0.69 | 0.34 | d | 1.63 | g | 0.38 | i | ----- | z | ||||
1993 | 0.50 | l | 1.06 | e | 0.40 | d | 0.40 | i | 0.96 | f | 0.90 | d | 1.02 | g | 0.36 | g | 0.40 | b | 0.50 | e | 0.70 | i | 0.51 | p | ----- | z |
1994 | 0.80 | p | 0.74 | 0.90 | 0.46 | b | 1.20 | t | 0.49 | t | 0.20 | ----- | z | 0.51 | e | 1.55 | s | 0.90 | h | 0.88 | k | ----- | z | |||
1995 | 0.94 | 0.73 | ----- | z | 0.80 | 0.80 | s | 0.52 | e | 0.56 | i | 0.60 | v | 1.07 | 0.88 | s | 0.66 | i | 0.90 | o | ----- | z | ||||
1996 | 0.60 | l | 1.15 | 0.78 | 1.49 | o | 0.66 | t | 0.57 | w | 0.30 | 0.25 | 0.63 | v | 0.75 | 1.07 | g | 1.02 | h | ----- | z | |||||
1997 | 0.21 | x | 0.80 | q | 0.60 | p | 0.60 | b | 0.47 | 0.66 | t | ----- | z | 0.18 | a | 0.47 | 0.74 | q | 0.53 | 0.52 | a | ----- | z | |||
1998 | 0.49 | 0.37 | 0.68 | 0.33 | 1.05 | 0.47 | 0.45 | 0.00 | 0.67 | 0.64 | 0.64 | 1.02 | 1.05 | |||||||||||||
1999 | 0.53 | 1.17 | 0.30 | 0.34 | 0.30 | 0.70 | 0.03 | 0.72 | 0.00 | 0.92 | 0.77 | 0.78 | b | 1.17 | b | |||||||||||
2000 | 0.74 | c | 0.54 | 0.43 | 0.48 | 0.87 | 0.44 | 0.43 | 0.09 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||||||
2001 | ----- | z | 0.22 | m | 0.55 | 1.00 | 1.08 | 0.81 | b | 0.27 | 0.10 | 0.18 | j | 0.75 | 0.70 | 1.16 | m | ----- | z | |||||||
2002 | 1.58 | s | 0.72 | f | 0.80 | h | 0.29 | b | 0.75 | a | 0.40 | a | 0.00 | 0.21 | 0.60 | 0.19 | 0.66 | e | 1.37 | b | ----- | z | ||||
2003 | 0.91 | 0.64 | f | 0.57 | e | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |
2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2005 | ----- | z | ----- | z | 2.00 | k | ----- | z | ----- | z | ----- | z | ----- | z | 0.35 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2006 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 2.02 | p | 0.95 | v | ----- | z |
2007 | 1.80 | c | 0.38 | h | 0.55 | d | 0.30 | b | 0.70 | h | 0.25 | f | 0.00 | 0.25 | b | 0.00 | 0.00 | r | 0.30 | n | 2.00 | s | ----- | z | ||
2008 | 1.00 | j | ----- | z | 0.56 | j | 0.20 | t | 0.20 | c | 0.55 | f | 0.20 | a | 0.20 | b | 0.25 | c | 0.00 | 0.40 | s | 1.50 | t | ----- | z | |
2009 | 0.90 | f | 0.31 | k | 1.13 | q | ----- | z | 0.74 | k | 0.02 | e | 0.10 | p | 0.03 | b | 0.02 | a | 0.10 | c | 0.10 | 0.90 | f | ----- | z | |
2010 | 0.50 | i | 0.20 | b | 0.50 | c | ----- | z | ----- | z | 0.30 | a | 0.10 | b | 0.00 | 0.03 | 0.00 | 0.95 | u | 1.23 | d | ----- | z | |||
2011 | 0.94 | o | 0.50 | i | 0.70 | i | 0.70 | m | 1.50 | i | 0.48 | r | 0.23 | m | 0.23 | o | 0.18 | l | 1.04 | q | 0.69 | i | 0.90 | r | ----- | z |
2012 | 1.25 | l | 0.62 | i | 0.67 | p | ----- | z | 0.65 | a | 0.64 | o | 0.76 | 0.14 | f | ----- | z | 1.42 | n | 0.86 | a | 0.47 | j | ----- | z | |
2013 | 1.22 | d | 0.37 | a | 1.39 | 0.88 | 0.32 | 0.90 | 0.14 | 0.89 | 1.14 | 0.34 | c | 1.19 | 0.68 | 1.39 | h | |||||||||
2014 | 0.50 | 0.63 | 2.06 | 0.73 | 0.42 | 1.25 | 0.34 | 0.36 | 0.08 | 0.59 | 1.05 | 1.78 | l | 2.06 | l | |||||||||||
2015 | 1.14 | 0.84 | 1.55 | 0.23 | 0.51 | 0.51 | 0.38 | 0.17 | 0.50 | 0.32 | 0.89 | 1.33 | 1.55 | |||||||||||||
2016 | 1.05 | 0.55 | 1.04 | 0.26 | 1.16 | 0.68 | 0.37 | 0.48 | 0.53 | 2.35 | 0.97 | 1.05 | 2.35 | |||||||||||||
2017 | 1.01 | d | 1.41 | 1.39 | 0.58 | 0.97 | 0.74 | 0.00 | 0.03 | 0.36 | 1.97 | 0.97 | a | 1.18 | 1.97 | e | ||||||||||
2018 | 1.15 | 1.28 | 1.26 | 1.16 | 0.13 | q | 0.76 | 0.00 | 0.00 | 0.03 | 0.23 | 1.65 | 0.94 | 1.65 | q | |||||||||||
2019 | 1.51 | 0.91 | 0.63 | 1.04 | 1.26 | 0.17 | 0.09 | 0.78 | 1.03 | 1.09 | 0.69 | 0.54 | 1.51 | |||||||||||||
2020 | 2.29 | 0.48 | 0.51 | 0.00 | 1.94 | 0.44 | 0.17 | 0.02 | 0.00 | 1.01 | 2.43 | 0.52 | 2.43 | |||||||||||||
2021 | 3.32 | 0.63 | b | 1.32 | 0.00 | 0.00 | 0.00 | 0.12 | 0.48 | 0.38 | 0.81 | 1.58 | h | 4.97 | u | ----- | z | |||||||||
2022 | 1.47 | 0.40 | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | g | 0.00 | 0.00 | 1.49 | g | 0.00 | r | ----- | z | ----- | z | ||||
2023 | ----- | z | 0.00 | u | ----- | z | 0.00 | m | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 1.16 | 0.74 | 0.81 | 0.52 | 0.74 | 0.65 | 0.26 | 0.37 | 0.36 | 0.68 | 0.90 | 0.92 | 1.68 | |||||||||||||
S.D. | 0.71 | 0.32 | 0.47 | 0.33 | 0.46 | 0.38 | 0.21 | 0.48 | 0.34 | 0.56 | 0.52 | 0.32 | 0.59 | |||||||||||||
SKEW | 1.61 | 0.50 | 1.00 | 0.42 | 0.68 | 0.39 | 0.55 | 1.97 | 0.72 | 1.41 | 1.55 | -0.06 | 0.38 | |||||||||||||
MAX | 3.32 | 1.41 | 2.06 | 1.16 | 1.94 | 1.44 | 0.76 | 2.05 | 1.14 | 2.35 | 2.43 | 1.37 | 2.43 | |||||||||||||
MIN | 0.33 | 0.20 | 0.18 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.10 | 0.52 | 1.05 | |||||||||||||
YRS | 19 | 22 | 23 | 24 | 22 | 24 | 26 | 29 | 28 | 24 | 17 | 14 | 6 |