YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.63 | e | 0.35 | 0.32 | 0.20 | 0.13 | ----- | z | ||||
1949 | 0.14 | a | 0.02 | 0.50 | 0.44 | 1.31 | 3.92 | 1.10 | 0.71 | 1.20 | 0.56 | 0.03 | 0.00 | 3.92 | a | |||||||||||
1950 | 0.06 | 0.41 | 0.20 | 0.33 | 0.35 | 0.69 | 1.28 | 1.89 | 0.61 | 0.17 | 0.17 | 0.00 | 1.89 | |||||||||||||
1951 | 0.31 | 0.10 | 0.12 | 0.80 | f | 0.90 | 1.96 | 0.97 | f | 0.73 | 1.08 | ----- | 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 | ----- | 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 | 1.00 | a | 2.60 | 0.90 | 0.20 | 0.80 | 0.50 | 0.20 | 0.10 | 0.00 | ----- | z | ||||||||
1996 | 0.05 | 0.05 | 0.37 | 0.60 | 2.90 | 0.70 | 1.15 | 1.50 | 0.67 | 0.10 | 0.11 | 0.00 | 2.90 | |||||||||||||
1997 | 0.05 | 0.55 | 0.00 | 0.40 | 0.20 | 0.80 | 1.00 | 1.12 | 0.30 | 1.30 | 0.80 | 0.30 | 1.30 | |||||||||||||
1998 | 0.02 | 0.45 | 0.25 | 0.35 | 0.62 | 0.58 | 0.50 | 1.40 | 1.00 | 0.35 | 0.44 | 0.04 | 1.40 | |||||||||||||
1999 | 0.50 | 0.12 | 0.55 | 1.10 | 1.00 | 1.00 | 1.00 | 1.70 | 0.70 | 0.20 | 0.15 | 0.05 | 1.70 | |||||||||||||
2000 | 0.20 | 0.10 | 0.75 | 0.95 | 0.22 | 0.28 | 0.95 | 0.80 | 0.35 | 1.13 | 0.20 | 0.10 | 1.13 | |||||||||||||
2001 | 0.55 | 0.28 | 0.27 | 0.01 | 1.15 | 1.75 | 0.82 | 0.65 | 1.10 | 0.30 | 0.20 | 0.05 | 1.75 | |||||||||||||
2002 | 0.40 | 0.05 | 0.45 | 0.30 | 0.43 | 0.98 | 0.43 | 0.80 | 1.65 | 0.90 | 0.05 | 0.01 | 1.65 | |||||||||||||
2003 | 0.16 | 0.15 | 1.35 | 0.40 | 0.95 | 1.50 | 0.56 | 0.20 | 0.18 | 0.02 | 0.05 | 0.13 | 1.50 | |||||||||||||
2004 | 0.02 | 0.32 | 0.42 | 1.02 | 0.82 | 0.90 | 1.60 | 0.40 | 1.00 | 0.32 | 0.80 | 0.10 | 1.60 | |||||||||||||
2005 | 0.15 | 0.38 | 0.07 | 0.50 | 0.60 | 0.66 | 1.20 | 1.50 | 0.50 | 1.65 | 0.05 | 0.12 | 1.65 | |||||||||||||
2006 | 0.45 | 0.00 | 0.45 | 0.07 | 0.32 | 1.19 | 1.15 | 1.22 | 0.45 | 1.43 | 0.12 | 1.10 | 1.43 | |||||||||||||
2007 | 0.39 | 0.10 | 0.34 | 0.17 | 0.78 | 0.60 | 2.60 | 1.06 | 0.58 | 0.26 | 0.07 | 0.28 | 2.60 | |||||||||||||
2008 | 0.03 | a | 0.33 | 0.05 | 0.33 | 0.06 | 0.24 | 1.35 | 1.60 | 0.20 | 1.47 | 0.58 | 0.10 | 1.60 | a | |||||||||||
2009 | 0.02 | 0.46 | 0.45 | 0.58 | 1.22 | 1.10 | 1.75 | 1.00 | 0.45 | 1.08 | 0.22 | 0.30 | a | 1.75 | a | |||||||||||
2010 | 0.10 | 0.10 | 0.75 | 1.05 | 1.05 | 0.55 | 1.20 | 2.50 | 0.76 | 0.13 | 0.05 | 0.18 | 2.50 | |||||||||||||
2011 | ----- | z | ----- | z | 0.27 | y | ----- | z | ----- | z | 0.77 | w | 2.40 | x | 2.70 | 0.63 | y | ----- | z | ----- | z | 0.52 | ----- | z | ||
2012 | 0.19 | 0.22 | 0.47 | 1.02 | 0.17 | 0.45 | 0.44 | 0.80 | 0.30 | 0.10 | 0.00 | 0.08 | 1.02 | |||||||||||||
2013 | 0.02 | 0.26 | 0.50 | 0.15 | 1.08 | 0.54 | 0.80 | 1.56 | 1.70 | 0.38 | 0.08 | 0.01 | 1.70 | |||||||||||||
2014 | 0.15 | 0.24 | 0.10 | 0.21 | 0.45 | 0.60 | 0.71 | 0.70 | 0.54 | 1.36 | 0.04 | 0.80 | 1.36 | |||||||||||||
2015 | 0.11 | 0.55 | 0.23 | 0.95 | 1.28 | 3.12 | 1.48 | 0.90 | 0.36 | 1.08 | 0.23 | 0.03 | 3.12 | |||||||||||||
2016 | 0.00 | 0.28 | 0.16 | 1.28 | 0.78 | 0.59 | 0.69 | 0.75 | 1.70 | 0.14 | 0.21 | 0.29 | 1.70 | |||||||||||||
2017 | 0.25 | 0.41 | 0.83 | 0.97 | 1.84 | 1.75 | 3.13 | 1.80 | 1.43 | 0.67 | 0.04 | 0.01 | 3.13 | |||||||||||||
2018 | 0.12 | 0.11 | 0.12 | 0.70 | 1.25 | 1.06 | 0.92 | 2.18 | 1.10 | 0.65 | 0.23 | 0.18 | 2.18 | |||||||||||||
2019 | 0.16 | 0.40 | 0.48 | 0.36 | 0.44 | 1.15 | 1.06 | 1.54 | 0.93 | 0.11 | 0.25 | 0.54 | 1.54 | |||||||||||||
2020 | 0.20 | 0.26 | 0.54 | 0.02 | 1.45 | 0.61 | 0.59 | 0.29 | 0.27 | 0.32 | 0.00 | a | 0.20 | 1.45 | a | |||||||||||
2021 | 0.11 | 0.10 | 2.32 | 0.36 | 1.88 | 0.46 | 1.02 | 0.03 | 0.26 | 0.22 | 0.00 | 0.00 | 2.32 | |||||||||||||
2022 | 0.25 | 0.15 | 0.30 | 0.04 | 0.60 | 0.94 | 2.06 | 0.67 | 0.28 | 0.40 | 0.02 | 0.06 | 2.06 | |||||||||||||
2023 | 0.50 | 0.40 | 0.19 | 0.35 | 0.85 | 1.27 | r | 0.80 | 0.91 | 0.28 | 0.15 | 0.06 | ----- | z | ----- | z | ||||||||||
2024 | ----- | z | ----- | z | 0.20 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.19 | 0.24 | 0.44 | 0.53 | 0.95 | 1.05 | 1.12 | 1.12 | 0.71 | 0.56 | 0.18 | 0.18 | 1.92 | |||||||||||||
S.D. | 0.16 | 0.16 | 0.45 | 0.38 | 0.67 | 0.80 | 0.63 | 0.64 | 0.46 | 0.50 | 0.21 | 0.25 | 0.68 | |||||||||||||
SKEW | 0.87 | 0.28 | 2.71 | 0.40 | 1.20 | 2.16 | 1.47 | 0.65 | 0.84 | 0.86 | 1.92 | 2.17 | 1.25 | |||||||||||||
MAX | 0.55 | 0.55 | 2.32 | 1.28 | 2.90 | 3.92 | 3.13 | 2.70 | 1.70 | 1.65 | 0.80 | 1.10 | 3.92 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.01 | 0.06 | 0.24 | 0.20 | 0.03 | 0.18 | 0.02 | 0.00 | 0.00 | 1.02 | |||||||||||||
YRS | 30 | 30 | 31 | 30 | 31 | 30 | 30 | 33 | 32 | 31 | 31 | 31 | 28 |