YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1942 | 0.28 | 0.26 | 0.10 | 1.40 | 0.54 | 0.12 | 0.53 | 1.80 | 2.45 | 1.64 | 0.00 | 0.44 | a | 2.45 | a | |||||||||||
1943 | 0.12 | 0.02 | 0.25 | 0.40 | 1.06 | 0.38 | 0.53 | 0.82 | 0.17 | a | 0.20 | 0.28 | 0.98 | b | 1.06 | c | ||||||||||
1944 | 0.68 | 0.05 | 0.20 | 0.36 | b | 0.44 | 0.24 | c | 0.34 | 0.95 | 0.22 | 0.51 | 0.29 | 0.69 | a | 0.95 | f | |||||||||
1945 | 0.41 | 0.05 | 0.11 | 0.26 | 0.44 | 0.23 | 0.75 | 1.12 | 1.34 | 0.39 | 0.00 | 0.34 | 1.34 | |||||||||||||
1946 | 0.06 | 0.00 | 1.43 | 0.00 | 0.09 | 0.20 | 2.15 | 1.47 | 0.64 | 0.62 | 0.55 | 0.00 | 2.15 | |||||||||||||
1947 | 0.00 | 0.00 | 0.52 | 0.13 | 0.85 | 0.70 | 0.37 | 0.63 | 0.05 | 0.41 | e | 0.20 | a | 0.38 | a | 0.85 | g | |||||||||
1948 | 0.28 | a | 0.36 | 0.75 | 0.10 | 0.40 | g | 0.60 | d | 0.60 | ----- | z | ----- | z | ----- | z | 0.00 | 0.00 | ----- | z | ||||||
1949 | 0.90 | n | 0.60 | c | 0.00 | j | ----- | z | 0.00 | t | 0.60 | ----- | z | ----- | z | 1.70 | 0.20 | b | 0.00 | 0.60 | ----- | z | ||||
1950 | 0.00 | a | ----- | z | 0.00 | 0.10 | 0.20 | 0.87 | 2.30 | 0.90 | 1.50 | 0.00 | 0.00 | 0.00 | ----- | z | ||||||||||
1951 | 0.30 | 0.70 | 0.90 | 0.30 | 0.60 | 0.51 | 0.60 | 0.80 | 0.00 | 0.20 | 0.20 | 0.60 | 0.90 | |||||||||||||
1952 | 0.20 | 0.80 | 0.80 | 0.60 | 0.30 | 0.20 | 0.80 | 0.90 | 0.40 | 0.00 | 0.60 | ----- | z | ----- | z | |||||||||||
1953 | 0.00 | 1.50 | b | 0.70 | 0.00 | 0.50 | 0.25 | 0.60 | 0.70 | 0.40 | 0.20 | 1.20 | 0.80 | 1.50 | b | |||||||||||
1954 | 0.50 | 0.10 | 0.10 | 0.10 | 0.40 | 0.10 | 0.60 | 1.25 | 0.68 | 0.60 | 0.03 | 0.20 | 1.25 | |||||||||||||
1955 | 0.03 | 0.50 | 0.02 | 0.10 | 0.60 | 0.70 | 1.20 | 1.10 | 0.70 | 0.40 | 0.10 | 0.30 | 1.20 | |||||||||||||
1956 | 0.08 | 0.39 | 0.60 | a | 0.00 | 0.06 | 0.43 | 0.20 | 0.33 | 0.00 | 0.17 | 0.00 | a | 0.60 | 0.60 | b | ||||||||||
1957 | 0.42 | 0.12 | 0.60 | 0.22 | 0.60 | 0.06 | 1.70 | 1.39 | 0.00 | 1.74 | 0.49 | 0.21 | 1.74 | |||||||||||||
1958 | 0.38 | 0.20 | 0.77 | 0.90 | 0.21 | 0.24 | 0.71 | 0.90 | 1.30 | 0.65 | 0.15 | a | 0.67 | 1.30 | a | |||||||||||
1959 | 0.19 | 0.10 | 0.65 | 0.51 | 0.69 | 0.88 | 0.52 | 1.20 | 0.05 | 1.08 | 0.05 | 1.65 | 1.65 | |||||||||||||
1960 | 0.48 | 0.22 | 0.87 | 0.00 | 0.11 | 1.30 | 1.00 | c | 0.55 | 0.20 | 1.90 | 0.15 | 0.80 | 1.90 | c | |||||||||||
1961 | 0.52 | 0.35 | 0.90 | 0.75 | 0.15 | 1.50 | 1.18 | 1.50 | 1.10 | 1.20 | 0.37 | 0.25 | 1.50 | |||||||||||||
1962 | 0.15 | 0.17 | 0.36 | 0.15 | 0.00 | 0.39 | 0.62 | 0.30 | 0.50 | 0.50 | 0.57 | 0.45 | 0.62 | |||||||||||||
1963 | 0.58 | 0.90 | 0.31 | 0.45 | 1.30 | 0.68 | 0.80 | 1.30 | 0.60 | 0.10 | 0.35 | 0.16 | 1.30 | |||||||||||||
1964 | 0.30 | 0.79 | 0.30 | 0.48 | 0.11 | 0.51 | 0.70 | 1.00 | 0.31 | 0.00 | 0.08 | ----- | z | ----- | z | |||||||||||
1965 | ----- | z | 0.24 | 1.00 | 0.80 | 0.90 | 0.55 | 1.90 | 1.20 | 0.48 | 0.12 | 0.00 | 0.20 | ----- | z | |||||||||||
1966 | 0.02 | 0.00 | 0.00 | 0.20 | 0.85 | 1.06 | 0.40 | 1.80 | 0.20 | 0.00 | 0.00 | 0.05 | 1.80 | |||||||||||||
1967 | 0.00 | 0.05 | 0.10 | 0.00 | 0.80 | 1.40 | 0.90 | 1.70 | 1.25 | 0.03 | 0.03 | 0.05 | 1.70 | |||||||||||||
1968 | 0.00 | 0.03 | 0.10 | 0.03 | 0.00 | 0.00 | 1.10 | 1.20 | 0.00 | 0.00 | 0.00 | 0.02 | 1.20 | |||||||||||||
1969 | 0.00 | 0.03 | 0.10 | 0.65 | 0.04 | d | 0.50 | 0.50 | 0.40 | 0.60 | 0.60 | 0.00 | 0.90 | 0.90 | d | |||||||||||
1970 | 0.00 | 0.60 | 0.03 | 0.00 | 0.03 | 0.05 | 0.70 | 1.10 | 0.30 | 0.03 | 0.00 | 0.00 | 1.10 | |||||||||||||
1971 | 0.05 | 0.03 | 0.04 | 0.95 | 0.03 | 0.03 | 0.60 | 0.10 | ----- | z | 0.02 | a | 0.08 | 0.04 | ----- | z | ||||||||||
1972 | 0.00 | 0.01 | 0.00 | 0.00 | 0.60 | 1.05 | ----- | z | 0.60 | 1.10 | 0.30 | 0.25 | 0.02 | ----- | z | |||||||||||
1973 | 0.04 | a | 0.41 | a | 0.40 | b | ----- | z | 0.01 | b | 0.20 | 0.80 | 0.30 | 0.01 | 0.80 | 0.00 | 0.02 | ----- | z | |||||||
1974 | 0.52 | 0.04 | 0.00 | a | 0.00 | 0.00 | 0.25 | 0.02 | 0.90 | i | 0.12 | ----- | z | 0.10 | 0.06 | ----- | z | |||||||||
1975 | 0.03 | 0.05 | a | 0.02 | 0.07 | 0.03 | 0.00 | 0.02 | c | 0.40 | 1.20 | 0.00 | 0.03 | 0.01 | 1.20 | d | ||||||||||
1976 | 0.03 | a | 0.00 | 0.01 | 0.30 | 0.40 | 0.05 | 1.00 | 0.04 | 0.05 | 0.01 | 0.06 | 0.00 | 1.00 | a | |||||||||||
1977 | 0.03 | 0.01 | 0.00 | 0.60 | 0.00 | 0.80 | 1.20 | 0.75 | 0.20 | 0.00 | 0.05 | 0.01 | 1.20 | |||||||||||||
1978 | 0.02 | 0.05 | 0.02 | 0.00 | 0.05 | 1.00 | 1.00 | 0.07 | 0.04 | 0.05 | f | 0.06 | b | 0.60 | 1.00 | h | ||||||||||
1979 | 0.03 | r | 0.02 | 0.02 | 0.02 | 1.00 | ----- | z | 0.40 | ----- | z | 0.03 | 0.02 | 0.03 | 0.05 | ----- | z | |||||||||
1980 | 0.02 | a | 0.02 | 0.03 | 0.02 | 0.02 | 0.00 | 0.02 | 0.03 | 0.04 | f | 0.00 | 0.03 | c | 0.00 | 0.04 | j | |||||||||
1981 | 0.02 | 0.02 | 0.02 | ----- | z | 0.02 | 0.02 | 0.02 | ----- | z | 0.01 | h | ----- | z | 0.01 | 0.00 | ----- | z | ||||||||
1982 | 0.01 | 0.04 | 0.01 | 0.00 | 0.02 | b | 0.04 | 0.04 | 0.06 | 0.08 | 0.01 | 0.03 | 0.03 | 0.08 | b | |||||||||||
1983 | 0.02 | 0.04 | 0.02 | 0.01 | 0.04 | 0.02 | 0.03 | 0.04 | 0.02 | 0.03 | 0.03 | 0.03 | 0.04 | |||||||||||||
1984 | 0.08 | 0.01 | 0.06 | 0.02 | 0.02 | 0.03 | 0.03 | ----- | z | 0.04 | 0.90 | 0.02 | ----- | 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 | 0.23 | 0.21 | ----- | z | 0.66 | 0.86 | 0.70 | 0.30 | 0.40 | 0.33 | 0.82 | ----- | z | |||||||||
1993 | 0.55 | n | 0.32 | 0.30 | 0.00 | 0.72 | 1.45 | 0.75 | 0.73 | 0.32 | 0.53 | 0.22 | 0.00 | 1.45 | n | |||||||||||
1994 | 0.35 | 0.00 | 1.16 | 0.35 | 1.35 | 1.42 | 0.63 | 0.70 | 0.00 | 1.85 | 1.15 | a | 0.00 | a | 1.85 | b | ||||||||||
1995 | 0.35 | 0.00 | 0.00 | 0.65 | 0.60 | 0.67 | 1.74 | 0.60 | 0.00 | 0.00 | 0.10 | 0.35 | 1.74 | |||||||||||||
1996 | 0.20 | 0.19 | 0.08 | 0.00 | 0.37 | 1.65 | 0.82 | 0.73 | 0.90 | 1.35 | 0.23 | 0.24 | 1.65 | |||||||||||||
1997 | 1.40 | e | 0.33 | 0.20 | 1.10 | 0.63 | 0.81 | 0.82 | 0.77 | 1.82 | a | 0.24 | 1.00 | 1.25 | 1.82 | f | ||||||||||
1998 | 0.00 | 0.20 | 2.70 | 0.75 | 0.00 | 0.50 | 1.30 | 1.27 | 0.38 | 1.07 | 0.16 | 0.23 | 2.70 | |||||||||||||
1999 | 0.35 | 0.00 | 0.45 | 0.65 | 0.57 | 0.56 | 0.73 | 2.04 | 1.02 | 0.70 | 0.00 | 0.00 | 2.04 | |||||||||||||
2000 | 0.00 | 0.00 | 0.88 | 0.28 | 0.05 | 0.72 | 0.85 | 0.65 | 0.39 | 0.90 | 0.39 | 0.96 | b | 0.96 | b | |||||||||||
2001 | 0.70 | 0.50 | 1.35 | 0.15 | 0.50 | 0.85 | 1.95 | 1.23 | 0.45 | 0.00 | 1.12 | 0.26 | 1.95 | |||||||||||||
2002 | 0.35 | 0.13 | 0.00 | 0.00 | 0.00 | 0.57 | 0.91 | 0.30 | 0.66 | 1.32 | a | 0.38 | 0.71 | 1.32 | a | |||||||||||
2003 | 0.00 | 0.20 | 0.28 | 0.00 | 0.55 | 0.52 | 0.31 | 0.50 | 0.52 | 1.10 | 0.60 | 0.24 | 1.10 | |||||||||||||
2004 | 0.45 | 0.65 | 0.20 | 3.08 | 0.00 | 1.05 | 1.19 | 0.85 | 0.94 | 0.76 | 1.10 | 0.36 | 3.08 | |||||||||||||
2005 | 0.66 | 0.26 | 1.02 | 0.70 | 0.90 | 1.49 | 0.72 | 0.99 | 1.70 | 0.25 | 0.09 | 0.00 | 1.70 | |||||||||||||
2006 | 0.00 | 0.01 | 0.10 | 1.06 | 0.37 | 0.27 | 1.66 | 1.20 | 2.83 | 1.16 | 0.30 | 2.02 | 2.83 | |||||||||||||
2007 | 0.25 | 0.04 | 0.27 | 0.85 | 0.93 | 1.03 | 0.35 | 0.63 | 0.52 | 0.12 | 0.66 | 0.57 | 1.03 | |||||||||||||
2008 | 0.07 | 0.67 | 0.70 | 0.62 | b | 1.27 | 1.10 | 1.45 | 2.30 | 0.19 | 0.45 | 0.60 | 0.33 | 2.30 | b | |||||||||||
2009 | 0.06 | 0.10 | 0.16 | 0.21 | 0.58 | 0.29 | 1.40 | 0.46 | 0.50 | 0.90 | 0.48 | 0.20 | 1.40 | |||||||||||||
2010 | 0.65 | 0.75 | 0.88 | 0.12 | a | 1.32 | 0.60 | 1.23 | 1.20 | 3.45 | 0.34 | 0.09 | 0.75 | 3.45 | a | |||||||||||
2011 | ----- | z | 0.19 | 0.00 | 0.00 | ----- | z | ----- | z | 1.10 | w | 0.63 | r | ----- | z | ----- | z | 0.00 | 0.65 | v | ----- | z | ||||
2012 | ----- | z | 0.03 | y | ----- | z | ----- | z | 0.24 | 0.31 | 0.81 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||
2013 | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | a | 1.26 | 0.86 | 0.80 | 2.80 | 0.13 | 0.25 | 0.45 | ----- | z | |||||||
2014 | 0.00 | 0.00 | 0.20 | g | 0.23 | 0.41 | 0.86 | 1.25 | 1.73 | 0.62 | 0.19 | 0.40 | 0.29 | 1.73 | g | |||||||||||
2015 | 0.33 | ----- | z | ----- | z | 0.95 | ----- | z | 0.92 | ----- | z | 0.86 | 0.31 | 1.25 | 0.14 | a | 0.65 | ----- | z | |||||||
2016 | 0.38 | 0.18 | 0.00 | 0.52 | 0.48 | 0.27 | 1.15 | 0.94 | 0.75 | 0.05 | 0.80 | 0.23 | b | 1.15 | b | |||||||||||
2017 | 0.65 | 0.30 | 0.45 | 0.75 | 0.43 | 0.33 | 2.40 | 2.10 | 2.55 | 0.85 | 0.00 | 0.05 | 2.55 | |||||||||||||
2018 | 0.06 | 0.21 | 0.01 | 0.00 | s | 0.35 | 0.49 | 1.47 | 0.71 | 0.45 | 1.75 | 0.40 | 1.04 | 1.75 | s | |||||||||||
2019 | 0.45 | 0.05 | 0.51 | 0.58 | 0.38 | 0.94 | 0.62 | 0.95 | 0.46 | 0.74 | 0.80 | 0.15 | 0.95 | |||||||||||||
2020 | 0.31 | 0.74 | 0.45 | 0.36 | 0.16 | 0.17 | 2.10 | 0.25 | 0.75 | 0.65 | 0.07 | 0.25 | 2.10 | |||||||||||||
2021 | 0.25 | 0.30 | 0.80 | 0.00 | 0.85 | 0.98 | 0.75 | 1.52 | 1.09 | 0.30 | 0.00 | 0.22 | 1.52 | |||||||||||||
2022 | 0.22 | 0.52 | a | 0.12 | 0.00 | 0.12 | 1.57 | 0.35 | 0.90 | 0.10 | 0.77 | 0.10 | 0.08 | 1.57 | a | |||||||||||
2023 | 0.12 | 0.26 | 1.30 | 0.19 | 1.11 | 0.92 | 0.57 | 0.60 | 0.27 | 0.52 | 0.36 | 0.45 | 1.30 | |||||||||||||
2024 | 0.07 | 0.20 | 0.60 | 0.00 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.23 | 0.24 | 0.40 | 0.37 | 0.42 | 0.60 | 0.87 | 0.89 | 0.68 | 0.52 | 0.25 | 0.36 | 1.53 | |||||||||||||
S.D. | 0.26 | 0.29 | 0.48 | 0.48 | 0.39 | 0.45 | 0.57 | 0.52 | 0.76 | 0.53 | 0.31 | 0.41 | 0.69 | |||||||||||||
SKEW | 1.69 | 1.76 | 2.00 | 2.93 | 0.72 | 0.53 | 0.78 | 0.49 | 1.73 | 0.99 | 1.52 | 1.69 | 0.52 | |||||||||||||
MAX | 1.40 | 1.50 | 2.70 | 3.08 | 1.35 | 1.65 | 2.40 | 2.30 | 3.45 | 1.90 | 1.20 | 2.02 | 3.45 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.02 | 0.03 | 0.00 | 0.00 | 0.00 | 0.00 | 0.04 | |||||||||||||
YRS | 68 | 71 | 71 | 69 | 70 | 73 | 71 | 67 | 69 | 69 | 74 | 70 | 49 |