YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.38 | e | 0.12 | 0.07 | 0.06 | 0.03 | ----- | z | ||||
1949 | 0.26 | 0.11 | 0.43 | 0.78 | 1.05 | 1.45 | 1.41 | 0.31 | 0.12 | 0.34 | 0.00 | 0.00 | 1.45 | |||||||||||||
1950 | 0.00 | 0.00 | 0.25 | a | 0.27 | 0.61 | 0.57 | 0.37 | 1.94 | 0.59 | 0.06 | 0.01 | 0.07 | 1.94 | a | |||||||||||
1951 | 0.57 | 0.07 | 0.15 | 0.29 | 1.24 | 2.12 | 0.45 | 0.29 | 0.15 | ----- | 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 | 0.72 | 0.45 | 0.80 | 0.38 | 0.48 | 0.67 | 0.38 | 0.26 | 0.45 | 0.06 | ----- | z | ||||||||||
1995 | 0.06 | 0.17 | a | 0.98 | b | 0.55 | 1.20 | 1.60 | 0.90 | 0.55 | 0.40 | 0.00 | 0.03 | 0.03 | 1.60 | c | ||||||||||
1996 | 0.05 | 0.17 | 1.30 | 0.25 | 2.06 | 0.70 | 1.26 | 1.55 | 0.74 | 0.36 | 0.07 | 0.15 | 2.06 | |||||||||||||
1997 | 0.14 | 0.51 | 0.07 | 0.73 | 0.25 | 1.04 | 1.25 | 0.90 | 0.28 | 0.99 | 0.30 | 0.22 | 1.25 | |||||||||||||
1998 | 0.04 | 0.17 | 0.83 | 0.27 | 0.38 | 0.39 | 0.83 | 0.90 | 0.62 | 0.98 | 0.58 | 0.07 | 0.98 | |||||||||||||
1999 | 0.24 | 0.05 | 0.40 | 0.63 | 1.69 | 0.83 | 2.07 | 0.93 | 0.14 | 0.12 | 0.24 | 0.19 | 2.07 | |||||||||||||
2000 | 0.22 | 0.29 | a | 0.85 | 0.45 | 0.44 | 0.24 | 0.30 | 1.11 | 0.38 | 0.78 | 0.04 | 0.13 | 1.11 | a | |||||||||||
2001 | 0.56 | 0.21 | 0.16 | 0.94 | 0.65 | 0.84 | 1.46 | 0.12 | 0.77 | 0.03 | 0.34 | 0.33 | 1.46 | |||||||||||||
2002 | 0.28 | 0.03 | 0.04 | 0.43 | a | 0.04 | 0.40 | 0.05 | 0.32 | 0.80 | 0.20 | 0.05 | 0.38 | 0.80 | a | |||||||||||
2003 | 0.01 | 0.25 | 0.64 | 0.86 | 0.26 | 0.74 | 0.34 | 0.09 | 0.20 | 0.12 | 0.19 | 0.07 | 0.86 | |||||||||||||
2004 | 0.24 | 0.17 | 0.20 | 1.46 | 0.02 | 0.85 | 0.66 | 5.13 | 0.28 | 0.17 | 0.45 | 0.12 | 5.13 | |||||||||||||
2005 | 0.14 | 0.20 | 0.44 | 0.30 | 0.54 | 0.63 | 0.34 | 0.91 | 0.25 | 0.64 | 0.00 | 0.10 | 0.91 | |||||||||||||
2006 | 0.40 | 0.00 | 0.24 | 0.20 | 0.98 | 0.40 | 2.19 | 2.50 | 0.80 | 2.17 | 0.16 | 0.57 | 2.50 | |||||||||||||
2007 | 0.04 | 0.13 | 0.24 | 1.51 | 0.63 | 0.92 | 0.54 | 1.06 | 0.31 | 0.25 | 0.06 | 0.17 | 1.51 | |||||||||||||
2008 | 0.17 | 0.33 | 0.10 | 0.55 | 0.34 | 0.40 | 1.34 | 1.63 | 0.18 | 1.68 | 0.03 | 0.19 | 1.68 | |||||||||||||
2009 | 0.01 | 0.18 | 0.30 | 0.42 | 0.60 | 0.53 | 0.63 | 0.57 | 0.45 | 1.00 | 0.25 | 0.26 | 1.00 | |||||||||||||
2010 | 0.48 | 0.45 | 0.78 | 0.34 | 0.75 | 0.44 | 1.20 | 1.38 | 0.15 | 0.03 | 0.05 | 0.32 | 1.38 | |||||||||||||
2011 | 0.13 | 0.09 | 0.22 | 0.12 | 0.78 | 0.99 | 0.40 | 0.59 | 0.31 | 0.22 | 0.43 | 0.80 | 0.99 | |||||||||||||
2012 | 0.02 | 0.11 | 0.14 | 0.91 | 0.30 | 0.03 | 0.53 | 0.05 | 1.11 | 0.15 | 0.04 | 0.06 | 1.11 | |||||||||||||
2013 | 0.07 | 0.01 | 0.19 | 0.44 | 0.10 | 1.09 | 0.45 | 1.08 | 0.22 | 0.10 | 0.14 | 0.08 | 1.09 | |||||||||||||
2014 | 0.17 | 0.37 | 0.21 | 0.41 | 0.08 | 0.51 | 2.90 | 0.56 | 0.28 | 1.20 | 0.23 | 0.54 | 2.90 | |||||||||||||
2015 | 0.37 | 0.55 | 0.16 | 0.32 | 1.64 | 0.86 | 0.32 | 0.73 | 0.14 | 0.71 | 0.20 | 0.19 | 1.64 | |||||||||||||
2016 | 0.11 | 0.40 | 0.09 | 0.81 | 0.76 | 1.60 | 1.20 | 0.82 | 0.15 | 0.00 | 0.53 | 0.21 | 1.60 | |||||||||||||
2017 | 0.35 | 0.16 | 0.28 | 0.69 | 1.66 | 0.56 | 1.92 | 1.91 | 2.41 | 0.23 | 0.05 | 0.01 | 2.41 | |||||||||||||
2018 | 0.04 | 0.23 | 0.18 | 0.25 | 0.16 | 0.03 | 2.31 | 0.70 | 0.94 | 0.86 | 0.36 | 0.00 | 2.31 | |||||||||||||
2019 | 0.31 | 0.54 | 0.24 | 0.22 | 0.27 | 1.12 | 1.38 | 0.83 | 0.05 | d | 0.47 | a | 0.42 | 0.22 | 1.38 | e | ||||||||||
2020 | 0.00 | 0.30 | 0.08 | 0.06 | 1.16 | 0.45 | 1.22 | 0.14 | 0.97 | 0.47 | 0.28 | 0.40 | 1.22 | |||||||||||||
2021 | 0.29 | 0.26 | 0.44 | 0.12 | 1.32 | 0.17 | 0.13 | 1.66 | 1.50 | 0.68 | 0.03 | 0.03 | 1.66 | |||||||||||||
2022 | 0.33 | 0.21 | 0.85 | 0.09 | 0.45 | 0.37 | 1.60 | 0.33 | 0.14 | 0.00 | 0.02 | 0.43 | 1.60 | |||||||||||||
2023 | 0.44 | 0.23 | 0.22 | 1.25 | 1.33 | 0.44 | 1.82 | 0.90 | 0.45 | 0.02 | 0.02 | 0.22 | 1.82 | |||||||||||||
2024 | 0.29 | 0.66 | 0.00 | u | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.21 | 0.23 | 0.38 | 0.53 | 0.74 | 0.72 | 1.04 | 0.99 | 0.49 | 0.47 | 0.19 | 0.20 | 1.67 | |||||||||||||
S.D. | 0.17 | 0.17 | 0.31 | 0.37 | 0.54 | 0.47 | 0.72 | 0.94 | 0.48 | 0.52 | 0.18 | 0.19 | 0.84 | |||||||||||||
SKEW | 0.54 | 0.80 | 1.24 | 1.13 | 0.65 | 1.05 | 0.69 | 2.71 | 2.22 | 1.55 | 0.72 | 1.37 | 2.45 | |||||||||||||
MAX | 0.57 | 0.66 | 1.30 | 1.51 | 2.06 | 2.12 | 2.90 | 5.13 | 2.41 | 2.17 | 0.58 | 0.80 | 5.13 | |||||||||||||
MIN | 0.00 | 0.00 | 0.04 | 0.06 | 0.02 | 0.03 | 0.05 | 0.05 | 0.05 | 0.00 | 0.00 | 0.00 | 0.80 | |||||||||||||
YRS | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 34 | 34 | 33 | 33 | 33 | 30 |