YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1926 | ----- | z | ----- | z | ----- | z | 0.50 | 0.35 | 0.25 | 0.20 | 0.50 | 0.75 | 0.75 | 0.00 | 0.50 | ----- | z | |||||||||
1927 | 0.20 | 0.25 | 0.50 | 0.05 | 0.05 | 0.33 | 1.00 | 0.50 | 1.00 | 0.25 | 0.50 | 0.50 | 1.00 | |||||||||||||
1928 | 0.00 | 0.75 | 0.25 | 0.35 | 0.75 | 0.00 | 0.50 | 0.55 | 0.25 | 0.75 | 0.20 | 0.50 | 0.75 | |||||||||||||
1929 | 0.15 | 0.25 | 0.28 | 0.00 | 1.00 | v | 0.10 | 1.00 | 1.90 | 0.80 | 0.35 | 0.25 | 0.12 | 1.90 | v | |||||||||||
1930 | 0.60 | 0.20 | 0.75 | 0.20 | 0.25 | 0.10 | 1.50 | 0.60 | 0.50 | 0.50 | ----- | z | ----- | z | ----- | z | ||||||||||
1931 | 0.15 | 0.75 | a | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |
1932 | ----- | z | ----- | z | ----- | z | ----- | z | 0.30 | 0.15 | 0.80 | 1.37 | 0.17 | 0.54 | 0.00 | 0.48 | ----- | z | ||||||||
1933 | 0.10 | 1.10 | ----- | z | ----- | z | 0.00 | ----- | z | 0.12 | y | 0.75 | ----- | z | ----- | z | ----- | z | 0.00 | ----- | z | |||||
1934 | 0.01 | 0.12 | ----- | z | ----- | z | 0.02 | 0.08 | 0.70 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||||
1935 | ----- | z | 0.36 | 0.25 | 0.30 | 1.00 | ----- | z | 0.12 | ----- | z | ----- | z | ----- | z | ----- | z | 1.25 | ----- | z | ||||||
1936 | 0.50 | 0.25 | 0.35 | 0.35 | 0.50 | 0.35 | 0.30 | 0.90 | 0.95 | 0.25 | 0.05 | 0.15 | 0.95 | |||||||||||||
1937 | 0.18 | 0.65 | 0.40 | 0.00 | 1.00 | 1.20 | 0.85 | 0.95 | 0.85 | 1.00 | 0.00 | 0.00 | 1.20 | |||||||||||||
1938 | 0.15 | 0.30 | 0.50 | 0.30 | 0.10 | 0.80 | 0.92 | 0.85 | 0.40 | 0.00 | 0.05 | 0.50 | 0.92 | |||||||||||||
1939 | 0.65 | b | 0.08 | 0.75 | 0.15 | 0.20 | 0.06 | 1.03 | 0.23 | 1.20 | 1.75 | 0.46 | c | 0.17 | b | 1.75 | g | |||||||||
1940 | 0.14 | f | 0.46 | 0.10 | 0.18 | 0.40 | 0.60 | 0.75 | 0.76 | 0.58 | 0.14 | 0.50 | 0.65 | 0.76 | f | |||||||||||
1941 | 0.30 | 0.30 | 0.35 | 0.80 | 0.85 | 0.35 | 1.35 | 1.25 | 2.00 | 0.45 | 0.45 | 0.65 | 2.00 | |||||||||||||
1942 | 0.05 | 0.15 | a | 0.00 | 0.10 | 0.00 | 0.20 | 0.35 | 2.25 | 0.70 | 0.20 | 0.00 | 0.20 | 2.25 | a | |||||||||||
1943 | 0.30 | 0.12 | a | 0.20 | 0.08 | 0.65 | 0.80 | 0.20 | y | 0.35 | 0.90 | 0.25 | 0.15 | 0.31 | ----- | z | ||||||||||
1944 | 0.05 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.19 | 0.40 | 0.10 | a | ----- | z | |||
1945 | 0.08 | 0.00 | 0.02 | 0.00 | 0.02 | 0.10 | 0.35 | 0.68 | 0.06 | 0.60 | 0.00 | 0.24 | 0.68 | |||||||||||||
1946 | 0.41 | 0.00 | 0.15 | ----- | z | 0.08 | 0.08 | 0.90 | 0.85 | 0.64 | 0.18 | 0.07 | 0.25 | ----- | z | |||||||||||
1947 | 0.25 | 0.00 | 0.04 | 0.10 | 0.20 | 0.55 | 0.41 | l | 1.00 | 0.40 | 0.14 | 0.00 | 0.19 | 1.00 | l | |||||||||||
1948 | 0.12 | 0.90 | a | 0.65 | c | 0.00 | 0.18 | 0.51 | 0.44 | 1.61 | 0.41 | 0.42 | 0.00 | 0.14 | a | 1.61 | e | |||||||||
1949 | 0.15 | 0.02 | 0.10 | 0.09 | 0.53 | 0.35 | 0.90 | 0.37 | 1.26 | 0.27 | 0.05 | 0.18 | 1.26 | |||||||||||||
1950 | 0.04 | 0.10 | 0.44 | 0.11 | 0.00 | 0.02 | 0.81 | a | 0.40 | 0.55 | a | 0.00 | y | 0.00 | 0.03 | ----- | z | |||||||||
1951 | 0.38 | 0.05 | 0.24 | 0.25 | 0.04 | 0.00 | 1.23 | 0.45 | a | 0.05 | 0.24 | 0.00 | 0.80 | 1.23 | a | |||||||||||
1952 | 0.14 | 0.19 | 0.25 | 0.64 | 0.25 | 0.90 | 0.40 | ----- | z | ----- | z | 0.00 | 0.25 | 0.03 | ----- | z | ||||||||||
1953 | 0.00 | 0.29 | 0.47 | 0.27 | 0.01 | 0.39 | 0.46 | 0.45 | 0.00 | 0.16 | a | 0.35 | 0.10 | b | 0.47 | c | ||||||||||
1954 | 0.10 | 0.13 | 0.30 | 0.12 | 0.28 | 0.45 | 0.33 | 0.90 | 0.81 | 1.10 | 0.00 | ----- | z | ----- | z | |||||||||||
1955 | 0.18 | 0.07 | 0.00 | 0.03 | 0.10 | 0.15 | 0.72 | 0.79 | 0.06 | 0.91 | 0.00 | 0.20 | 0.91 | |||||||||||||
1956 | 0.27 | 0.12 | 0.00 | 0.12 | 0.00 | 0.10 | 0.63 | 0.29 | 0.10 | 0.34 | 0.00 | 0.12 | 0.63 | |||||||||||||
1957 | 0.15 | 0.52 | 0.24 | 0.34 | 0.15 | 0.44 | 0.74 | 1.08 | 0.10 | 0.74 | 0.19 | 0.18 | 1.08 | |||||||||||||
1958 | 0.03 | 0.13 | 0.32 | 0.59 | 0.00 | 0.31 | 0.45 | 0.30 | 0.36 | 0.83 | 0.25 | a | 0.00 | 0.83 | a | |||||||||||
1959 | 0.06 | 0.20 | 0.08 | 0.22 | 0.00 | 0.14 | 0.37 | 0.32 | 0.00 | 0.40 | d | 0.03 | c | 0.72 | 0.72 | g | ||||||||||
1960 | 0.21 | 0.07 | 0.00 | 0.00 | 0.09 | 0.25 | d | 0.28 | 0.07 | 0.50 | 0.67 | 0.03 | 0.20 | 0.67 | d | |||||||||||
1961 | 0.16 | 0.07 | 0.12 | ----- | z | 0.09 | 0.53 | 1.27 | 0.79 | 0.52 | 0.68 | a | 0.45 | 0.30 | b | ----- | z | |||||||||
1962 | 0.36 | 0.00 | 0.08 | 0.06 | ----- | z | 0.18 | 0.26 | 0.55 | 0.58 | 0.76 | 0.34 | a | 0.64 | b | ----- | z | |||||||||
1963 | 0.04 | 0.38 | 0.31 | 0.00 | 0.06 | 0.08 | 0.37 | 0.84 | 0.33 | 0.25 | 0.47 | 0.02 | 0.84 | |||||||||||||
1964 | 0.06 | 0.22 | 0.03 | 0.44 | 0.21 | 0.03 | 1.19 | 0.32 | 0.92 | 0.20 | 0.00 | 0.07 | 1.19 | |||||||||||||
1965 | 0.07 | 0.07 | 0.11 | ----- | z | 0.01 | 0.25 | 0.74 | k | 0.75 | 0.90 | 0.28 | 0.09 | 0.41 | ----- | z | ||||||||||
1966 | 0.36 | a | 0.15 | 0.07 | 0.00 | 0.00 | 0.78 | 0.65 | 0.73 | 0.58 | 0.20 | 0.00 | 0.18 | 0.78 | a | |||||||||||
1967 | 0.07 | 0.35 | 0.05 | 0.00 | 0.00 | 0.27 | 0.44 | 0.90 | 0.97 | 0.26 | 0.07 | 0.14 | 0.97 | |||||||||||||
1968 | 0.65 | 0.27 | 0.14 | 0.05 | 0.03 | 0.03 | 1.61 | 1.30 | 0.05 | 0.22 | 0.20 | 0.85 | r | 1.61 | r | |||||||||||
1969 | 0.10 | 0.06 | 0.90 | 0.19 | 0.50 | 0.05 | 0.52 | a | 0.31 | b | 0.27 | 0.74 | 0.00 | 0.13 | 0.90 | c | ||||||||||
1970 | 0.00 | 0.22 | 0.15 | 0.07 | 0.10 | 0.05 | 0.33 | 1.04 | 0.25 | 0.40 | ----- | z | ----- | z | ----- | z | ||||||||||
1971 | 0.13 | 0.14 | 0.00 | 0.10 | 0.03 | 0.11 | 0.85 | 0.85 | 0.53 | 0.94 | 0.35 | 0.45 | a | 0.94 | a | |||||||||||
1972 | 0.03 | 0.00 | 0.08 | 0.00 | 0.13 | 0.45 | n | 0.92 | a | 1.70 | 0.42 | 2.02 | b | 0.39 | ----- | z | ----- | z | ||||||||
1973 | ----- | z | 0.22 | 0.22 | a | 0.28 | 0.90 | 0.22 | 0.50 | 0.34 | 0.29 | 0.07 | 0.15 | 0.00 | ----- | z | ||||||||||
1974 | 0.03 | 0.10 | 0.15 | 0.00 | 0.10 | 0.00 | 0.73 | 1.26 | 1.20 | 0.83 | 0.00 | ----- | z | ----- | z | |||||||||||
1975 | 0.10 | 0.23 | 0.18 | 0.00 | 0.07 | 0.00 | 0.17 | b | ----- | z | 1.60 | o | 0.00 | 0.10 | 0.08 | ----- | z | |||||||||
1976 | 0.00 | ----- | z | 0.12 | 0.00 | 0.68 | a | 0.33 | b | 0.35 | 1.00 | 0.17 | 0.23 | 0.30 | 0.00 | ----- | z | |||||||||
1977 | 0.05 | 0.32 | 0.10 | 0.10 | 0.00 | 0.30 | 1.03 | a | 0.57 | 0.60 | 0.15 | ----- | z | 0.30 | ----- | z | ||||||||||
1978 | 0.52 | ----- | z | 0.04 | 0.00 | 0.25 | 0.68 | 1.10 | 0.45 | 0.30 | 1.52 | 0.48 | 0.30 | ----- | z | |||||||||||
1979 | 0.31 | 0.53 | 0.02 | 0.10 | 0.33 | 0.42 | 0.62 | 0.45 | 1.21 | 0.71 | 0.62 | 0.17 | 1.21 | |||||||||||||
1980 | 0.13 | 0.30 | 0.14 | 0.07 | 0.07 | 0.00 | 0.41 | 0.85 | 1.61 | 0.04 | 0.05 | 0.42 | 1.61 | |||||||||||||
1981 | 0.36 | 0.10 | 0.34 | 0.13 | 0.29 | 1.44 | 1.23 | 0.97 | 0.36 | 0.61 | 0.13 | 0.03 | 1.44 | |||||||||||||
1982 | 0.14 | b | 0.50 | 0.49 | b | 0.05 | 0.43 | 0.03 | a | 0.99 | 1.43 | 0.79 | 0.06 | 0.22 | 0.65 | 1.43 | e | |||||||||
1983 | 0.53 | a | 0.34 | 0.49 | 0.03 | 0.24 | 0.05 | a | 0.58 | 1.35 | 0.62 | a | 1.08 | a | 0.45 | 0.17 | 1.35 | d | ||||||||
1984 | 0.70 | 0.00 | 0.11 | 0.37 | 0.09 | 0.85 | 0.94 | 1.06 | a | 0.33 | 1.40 | 0.34 | 0.54 | 1.40 | a | |||||||||||
1985 | 0.40 | 0.30 | 0.51 | 0.60 | 0.31 | 0.24 | 1.08 | 1.05 | 0.60 | a | 1.42 | c | 0.24 | 0.02 | 1.42 | d | ||||||||||
1986 | 0.04 | 0.23 | a | 0.13 | 0.00 | 0.75 | 0.87 | 0.53 | 0.59 | 0.39 | 0.79 | 0.43 | a | 0.30 | 0.87 | b | ||||||||||
1987 | 0.40 | 0.14 | 0.08 | a | 0.06 | 0.85 | 0.02 | 0.35 | a | 0.26 | n | 0.24 | 0.25 | 0.00 | 0.12 | a | 0.85 | q | ||||||||
1988 | 0.10 | l | 0.16 | 0.01 | 0.17 | 0.02 | 0.24 | 0.65 | 0.63 | a | 1.17 | 0.17 | 0.00 | 0.20 | a | 1.17 | n | |||||||||
1989 | 0.37 | 1.25 | 0.00 | 0.00 | 0.22 | 0.00 | 0.83 | u | 0.33 | ----- | z | 1.22 | 0.00 | 0.02 | ----- | z | ||||||||||
1990 | 0.36 | 0.11 | a | 0.23 | 0.37 | 0.37 | a | 0.52 | 1.07 | 0.98 | 1.27 | 0.07 | 0.25 | 0.43 | 1.27 | b | ||||||||||
1991 | ----- | z | 0.14 | 0.11 | 0.00 | 0.06 | o | ----- | z | 0.80 | 1.23 | 0.40 | 0.26 | 0.40 | 0.66 | ----- | z | |||||||||
1992 | 0.22 | b | 0.20 | 0.40 | 0.09 | 1.12 | 0.20 | 0.40 | 0.32 | 0.60 | 0.90 | 0.20 | 0.90 | 1.12 | b | |||||||||||
1993 | 0.31 | 0.22 | 0.60 | 0.19 | 0.24 | 0.49 | 1.00 | 1.54 | 0.10 | 0.55 | 0.40 | 0.15 | 1.54 | |||||||||||||
1994 | 0.00 | 0.21 | 0.40 | 0.19 | 0.78 | 0.10 | 0.60 | 0.60 | 1.25 | 0.57 | 0.84 | 0.53 | 1.25 | |||||||||||||
1995 | 0.27 | 0.10 | 0.60 | 0.30 | 0.14 | 0.35 | 0.67 | 0.90 | 1.70 | 0.10 | 0.33 | 0.50 | 1.70 | |||||||||||||
1996 | 0.90 | 0.35 | 0.70 | 0.00 | 0.00 | 0.90 | 0.90 | 1.20 | 0.90 | 0.93 | 0.20 | 0.00 | a | 1.20 | a | |||||||||||
1997 | 0.40 | 0.10 | 0.30 | 0.60 | 0.50 | 0.49 | 0.71 | 0.80 | 2.02 | 0.40 | 0.30 | 0.40 | a | 2.02 | a | |||||||||||
1998 | 0.30 | 0.20 | 0.75 | 0.30 | 0.00 | 0.30 | 0.70 | 0.17 | 0.30 | 0.60 | 0.93 | a | 0.80 | 0.93 | a | |||||||||||
1999 | 0.00 | 0.00 | 0.25 | 0.40 | 0.27 | 0.42 | 1.26 | 1.67 | 0.60 | 0.00 | 0.00 | 0.00 | 1.67 | |||||||||||||
2000 | 0.00 | 0.00 | 0.00 | 0.00 | ----- | z | ----- | z | 1.12 | 0.90 | 0.60 | 1.24 | 0.70 | 0.08 | d | ----- | z | |||||||||
2001 | 1.08 | 0.90 | 0.30 | 0.30 | 0.29 | 0.60 | 0.90 | 1.40 | 0.97 | 0.20 | 0.40 | b | 0.60 | 1.40 | b | |||||||||||
2002 | 0.33 | 0.00 | 0.01 | 0.02 | 0.10 | 0.00 | 0.62 | 0.52 | 1.04 | b | 0.07 | 0.72 | a | 0.65 | b | 1.04 | e | |||||||||
2003 | 0.00 | 0.35 | 0.10 | 0.00 | 0.00 | 0.61 | 0.66 | 0.90 | 0.62 | 0.78 | 0.92 | a | 0.05 | b | 0.92 | c | ||||||||||
2004 | 0.12 | 0.97 | 0.56 | 2.00 | a | 0.05 | 0.20 | 0.35 | 1.40 | 0.20 | 2.01 | 0.52 | 0.26 | b | 2.01 | c | ||||||||||
2005 | 0.62 | 0.38 | a | 0.34 | 0.35 | 0.48 | 0.00 | 0.10 | 0.50 | 1.10 | 0.70 | 0.00 | 0.00 | 1.10 | a | |||||||||||
2006 | 0.12 | 0.00 | 0.10 | 0.00 | 0.00 | 0.74 | 1.10 | 1.31 | 0.20 | 1.03 | 0.06 | a | 0.31 | 1.31 | a | |||||||||||
2007 | 0.15 | 0.05 | 0.33 | a | 0.00 | c | 0.00 | c | 0.45 | 0.75 | c | 0.49 | 0.73 | 0.13 | 0.22 | 0.50 | 0.75 | j | ||||||||
2008 | 0.10 | 0.11 | 0.00 | 0.00 | 0.25 | 0.11 | f | 0.76 | 0.68 | 1.12 | 0.00 | 0.23 | 0.31 | 1.12 | f | |||||||||||
2009 | 0.12 | 0.02 | 0.62 | 0.20 | 0.61 | 0.34 | 1.15 | 1.00 | 0.28 | 0.33 | 0.18 | ----- | z | ----- | z | |||||||||||
2010 | 0.25 | 0.31 | 0.28 | 2.23 | 0.00 | 0.60 | 0.98 | 0.70 | 0.62 | 0.22 | 0.00 | 0.04 | 2.23 | |||||||||||||
2011 | ----- | z | ----- | z | ----- | z | 0.00 | 0.00 | 0.00 | ----- | z | 0.83 | y | ----- | z | 1.44 | ----- | z | 0.48 | x | ----- | z | ||||
2012 | ----- | z | ----- | z | ----- | z | ----- | z | 0.23 | 0.00 | 0.66 | 0.69 | 1.22 | 0.00 | 0.00 | d | 0.30 | ----- | z | |||||||
2013 | 0.12 | 0.00 | c | 0.14 | 0.07 | 0.20 | 0.14 | 1.44 | 0.84 | 1.63 | 0.27 | 0.23 | 0.10 | 1.63 | c | |||||||||||
2014 | 0.00 | 0.28 | 0.00 | 0.45 | 0.04 | 0.04 | 1.10 | 1.35 | 0.82 | 0.29 | 0.19 | 0.18 | 1.35 | |||||||||||||
2015 | 0.24 | 0.15 | 0.31 | 0.44 | 0.24 | 0.42 | 0.68 | 0.56 | 0.94 | 0.37 | 0.18 | 0.32 | 0.94 | |||||||||||||
2016 | 0.10 | 0.05 | 0.00 | 0.64 | 0.50 | 0.48 | 0.64 | 0.68 | 1.19 | 0.12 | 1.55 | 0.55 | 1.55 | |||||||||||||
2017 | 1.13 | 0.22 | 0.12 | 0.24 | 0.08 | 0.32 | 0.69 | 0.86 | 0.29 | 0.32 | 0.00 | 0.00 | 1.13 | |||||||||||||
2018 | 0.12 | 0.49 | 0.49 | 0.02 | 0.39 | 0.59 | 1.23 | 0.76 | 0.71 | 1.31 | 0.00 | 0.09 | 1.31 | |||||||||||||
2019 | 0.23 | 0.04 | 0.33 | 0.25 | 1.06 | 0.05 | 0.38 | 0.19 | 0.46 | 0.35 | 0.61 | 0.22 | 1.06 | |||||||||||||
2020 | 0.18 | 0.37 | 0.49 | 0.12 | 0.04 | 0.28 | 1.93 | 0.33 | 0.36 | 0.27 | 0.21 | 0.55 | 1.93 | |||||||||||||
2021 | 0.04 | 0.09 | 0.02 | 0.13 | 0.00 | 0.29 | 0.91 | 0.93 | 0.32 | 0.08 | 0.00 | 0.43 | a | 0.93 | a | |||||||||||
2022 | 0.03 | 0.00 | 0.09 | 0.00 | 0.00 | e | 0.91 | 2.31 | 1.65 | 0.15 | 1.59 | 0.04 | 0.84 | 2.31 | e | |||||||||||
2023 | 0.21 | 0.10 | 0.28 | 0.03 | 0.22 | 0.03 | 0.31 | 0.83 | 0.47 | 0.12 | 0.32 | 0.61 | 0.83 | |||||||||||||
2024 | 0.10 | 0.13 | 0.25 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.22 | 0.24 | 0.25 | 0.21 | 0.25 | 0.32 | 0.77 | 0.83 | 0.65 | 0.53 | 0.24 | 0.30 | 1.22 | |||||||||||||
S.D. | 0.23 | 0.25 | 0.22 | 0.35 | 0.29 | 0.30 | 0.40 | 0.43 | 0.45 | 0.48 | 0.27 | 0.26 | 0.41 | |||||||||||||
SKEW | 1.81 | 1.91 | 0.88 | 3.94 | 1.34 | 1.18 | 0.97 | 0.74 | 0.89 | 1.21 | 1.88 | 0.96 | 0.72 | |||||||||||||
MAX | 1.13 | 1.25 | 0.90 | 2.23 | 1.12 | 1.44 | 2.31 | 2.25 | 2.02 | 2.02 | 1.55 | 1.25 | 2.25 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.10 | 0.07 | 0.00 | 0.00 | 0.00 | 0.00 | 0.47 | |||||||||||||
YRS | 90 | 92 | 91 | 89 | 92 | 90 | 90 | 90 | 89 | 93 | 90 | 88 | 54 |