YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | 0.00 | 0.71 | 0.80 | 1.04 | 0.07 | 0.24 | 0.00 | 0.00 | 0.00 | 0.08 | 0.02 | 1.30 | 1.30 | |||||||||||||
1949 | 0.73 | 0.88 | 0.57 | 0.05 | 0.11 | 0.02 | 0.00 | 0.00 | 0.00 | 0.11 | 0.79 | 1.70 | 1.70 | |||||||||||||
1950 | 0.91 | 0.95 | 0.78 | 0.52 | 0.18 | 0.08 | 0.03 | 0.00 | 0.08 | 0.07 | 0.36 | 0.08 | 0.95 | |||||||||||||
1951 | 0.41 | 0.65 | 0.31 | 0.93 | 0.00 | 0.05 | 0.00 | 0.03 | 0.00 | 0.72 | 0.29 | 2.14 | 2.14 | |||||||||||||
1952 | 1.82 | 0.47 | 2.00 | 0.35 | 0.00 | 0.01 | 0.00 | 0.00 | 0.01 | 0.00 | 0.76 | 1.52 | 2.00 | |||||||||||||
1953 | 0.22 | 0.21 | 0.51 | 0.56 | 0.00 | 0.04 | p | ----- | 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 | 0.73 | 1.91 | 0.84 | 0.28 | 0.02 | 0.21 | 0.00 | 0.00 | 1.16 | 0.26 | 1.10 | 0.13 | 1.91 | |||||||||||||
1964 | 0.34 | 0.01 | 0.49 | 0.32 | 0.02 | 0.23 | 0.00 | 0.00 | 0.05 | 0.23 | 0.68 | 0.54 | 0.68 | |||||||||||||
1965 | 0.24 | 0.16 | 0.82 | 1.06 | 0.00 | 0.08 | 0.02 | 0.02 | 0.06 | 0.00 | 1.61 | 2.36 | 2.36 | |||||||||||||
1966 | 0.76 | 1.09 | 0.16 | 0.02 | 0.15 | 0.03 | 0.00 | 0.01 | 0.00 | 0.02 | 1.36 | 2.95 | 2.95 | |||||||||||||
1967 | 1.67 | 0.00 | 0.47 | 0.58 | 0.04 | 0.03 | 0.00 | 0.00 | 0.01 | 0.00 | 2.60 | 0.49 | 2.60 | |||||||||||||
1968 | 0.21 | 0.23 | 1.44 | h | ----- | 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 | 0.01 | y | ----- | 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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.01 | f | 0.01 | 0.01 | 0.09 | 0.62 | 0.00 | 0.03 | ----- | z | ||||||
2001 | 1.65 | 1.89 | 2.00 | b | 0.19 | a | 0.03 | 0.02 | 0.00 | 0.00 | 0.00 | 0.01 | 0.85 | 0.19 | a | 2.00 | d | |||||||||
2002 | 0.22 | a | 0.11 | 0.23 | 0.07 | a | 0.05 | 0.11 | 0.01 | 0.02 | 0.16 | 0.05 | 0.70 | 1.55 | a | 1.55 | c | |||||||||
2003 | 0.12 | a | 1.08 | a | 3.02 | a | 0.70 | 0.41 | 0.07 | 0.02 | a | 0.00 | 0.02 | 0.20 | 0.03 | 0.46 | 3.02 | d | ||||||||
2004 | 0.18 | 1.53 | 0.40 | 0.09 | b | 0.00 | c | 0.00 | d | 0.00 | f | 0.00 | g | 0.03 | a | 1.34 | 0.21 | 4.44 | 4.44 | w | ||||||
2005 | 1.82 | 2.28 | 0.51 | 1.08 | 0.10 | 0.02 | 0.01 | 0.02 | 0.01 | 0.75 | 0.65 | 0.62 | 2.28 | |||||||||||||
2006 | 1.15 | 0.84 | 1.06 | 0.57 | 0.55 | 0.08 | 0.00 | 0.00 | e | 0.00 | 0.01 | 0.85 | 0.31 | 1.15 | e | |||||||||||
2007 | 0.56 | 0.51 | 0.04 | 0.29 | 0.02 | f | 0.04 | 0.02 | 0.00 | 0.05 | a | 0.04 | a | 0.89 | 0.72 | 0.89 | h | |||||||||
2008 | 1.25 | 1.52 | 0.15 | 0.34 | 0.08 | 0.02 | 0.01 | 0.00 | 0.00 | 0.01 | 0.62 | 1.65 | 1.65 | |||||||||||||
2009 | 0.08 | 1.57 | 0.13 | 0.07 | 0.14 | 0.03 | 0.03 | 0.01 | 0.01 | 0.37 | 0.01 | 0.35 | c | 1.57 | c | |||||||||||
2010 | 1.74 | 2.09 | 0.32 | 0.58 | 0.16 | 0.08 | 0.09 | 0.02 | a | 0.01 | 1.43 | d | 0.31 | 1.42 | a | 2.09 | f | |||||||||
2011 | 0.69 | 0.74 | 1.72 | 0.13 | 0.44 | 0.02 | 0.01 | 0.01 | 0.04 | 0.56 | 1.27 | 0.53 | a | 1.72 | a | |||||||||||
2012 | 0.64 | 0.96 | a | 0.72 | a | 0.62 | 0.09 | 0.06 | 0.10 | 0.02 | 0.05 | 0.90 | 0.34 | 0.56 | 0.96 | b | ||||||||||
2013 | 0.53 | 0.23 | 0.41 | 0.06 | d | 0.12 | 0.03 | 0.02 | 0.02 | 0.01 | 0.28 | 0.67 | 0.05 | 0.67 | d | |||||||||||
2014 | 0.02 | a | 1.33 | 0.25 | a | 0.18 | b | 0.00 | 0.00 | 0.00 | b | 0.00 | 0.00 | 0.39 | a | 0.19 | a | 0.86 | 1.33 | h | ||||||
2015 | 0.34 | 0.21 | b | 0.06 | 0.02 | 0.48 | 0.01 | 0.33 | 0.00 | a | 0.81 | 0.13 | 0.70 | 0.40 | a | 0.81 | d | |||||||||
2016 | 1.04 | a | 0.34 | 0.67 | a | 0.42 | c | 0.14 | c | 0.00 | 0.00 | 0.00 | a | 0.05 | 0.15 | b | 0.48 | e | 1.08 | 1.08 | p | |||||
2017 | 2.81 | a | 1.13 | 0.08 | 0.01 | h | 0.19 | 0.00 | 0.00 | 0.00 | 0.01 | 0.01 | 0.41 | 0.00 | 2.81 | i | ||||||||||
2018 | 0.83 | a | 0.32 | 0.37 | 0.25 | 0.17 | 0.00 | 0.00 | 0.00 | 0.00 | 0.40 | 0.97 | 2.62 | 2.62 | a | |||||||||||
2019 | 1.32 | 1.45 | a | 0.56 | a | 0.37 | 0.28 | 0.26 | 0.05 | c | 0.00 | 0.19 | a | 0.00 | 1.70 | c | 1.12 | 1.70 | i | |||||||
2020 | 0.11 | 0.11 | 0.56 | 0.82 | 0.39 | 0.03 | 0.00 | 0.00 | 0.00 | 0.02 | 0.19 | 0.83 | c | 0.83 | c | |||||||||||
2021 | 0.60 | 0.06 | 0.69 | 0.03 | 0.16 | 0.00 | 0.00 | 0.00 | 0.00 | 0.40 | 0.00 | 1.33 | a | 1.33 | a | |||||||||||
2022 | 0.09 | 0.13 | 1.04 | 0.05 | 0.00 | 0.00 | a | 0.00 | 0.00 | 0.67 | 0.03 | 1.05 | 1.04 | 1.05 | a | |||||||||||
2023 | 1.68 | 1.20 | 1.50 | 0.01 | 0.27 | 0.21 | 0.00 | 0.07 | a | 0.02 | 0.00 | 0.31 | 0.88 | 1.68 | a | |||||||||||
2024 | 0.92 | 2.27 | 1.14 | 0.39 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.79 | 0.87 | 0.73 | 0.38 | 0.15 | 0.06 | 0.02 | 0.01 | 0.11 | 0.28 | 0.68 | 1.07 | 1.69 | |||||||||||||
S.D. | 0.67 | 0.69 | 0.65 | 0.33 | 0.15 | 0.08 | 0.06 | 0.01 | 0.26 | 0.37 | 0.57 | 0.97 | 0.70 | |||||||||||||
SKEW | 0.98 | 0.53 | 1.73 | 0.72 | 1.16 | 1.48 | 4.30 | 2.77 | 3.08 | 1.68 | 1.30 | 1.52 | 0.24 | |||||||||||||
MAX | 2.81 | 2.28 | 3.02 | 1.08 | 0.55 | 0.26 | 0.33 | 0.07 | 1.16 | 1.43 | 2.60 | 4.44 | 3.02 | |||||||||||||
MIN | 0.00 | 0.00 | 0.04 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.67 | |||||||||||||
YRS | 36 | 36 | 35 | 33 | 33 | 33 | 33 | 33 | 34 | 34 | 34 | 34 | 25 |