YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.62 | 2.41 | 0.45 | 0.10 | 0.96 | 5.54 | g | |||||
1927 | 0.00 | 0.43 | 0.25 | 0.48 | 0.00 | 3.88 | 2.63 | 2.41 | 1.85 | 0.00 | 0.00 | 0.08 | 12.01 | |||||||||||||
1928 | 0.00 | 0.24 | 0.57 | 0.37 | a | 2.54 | 0.49 | 2.42 | 5.16 | 0.66 | 5.78 | 1.59 | 0.52 | 20.34 | ||||||||||||
1929 | 0.00 | 0.17 | 1.40 | 0.04 | 3.24 | 0.21 | 4.50 | 7.21 | 0.94 | 0.76 | a | 0.31 | 0.04 | b | 18.82 | |||||||||||
1930 | 0.13 | a | 0.00 | a | 0.21 | 0.46 | 2.70 | 1.83 | 3.72 | 1.73 | a | 1.12 | 5.11 | a | 0.45 | 0.05 | 17.51 | |||||||||
1931 | 0.02 | 0.09 | 0.58 | 3.27 | 2.07 | 0.64 | 6.68 | 2.88 | 1.71 | 0.89 | a | 0.13 | a | 0.19 | 19.15 | |||||||||||
1932 | 0.28 | a | 0.70 | 0.79 | a | 1.09 | a | 3.17 | 7.05 | 1.96 | 1.84 | 3.73 | a | 0.71 | 0.02 | 0.56 | 21.90 | |||||||||
1933 | 0.05 | 0.32 | 0.20 | 0.44 | 1.19 | 1.78 | 2.28 | 5.22 | 0.26 | 1.08 | 0.81 | 0.00 | 13.63 | |||||||||||||
1934 | 0.13 | a | 0.90 | 0.00 | 0.80 | 1.45 | 0.31 | 0.34 | 1.53 | 0.26 | 0.30 | 0.47 | 0.00 | 6.49 | ||||||||||||
1935 | 0.56 | 0.00 | 0.12 | 0.12 | 3.57 | 0.41 | 1.51 | 3.22 | 3.96 | 0.92 | 0.98 | 0.64 | 16.01 | |||||||||||||
1936 | 0.64 | 0.00 | 0.03 | 0.13 | 3.61 | 1.18 | 6.32 | 0.29 | 1.83 | 0.14 | 0.00 | 0.38 | 14.55 | |||||||||||||
1937 | 0.10 | ----- | z | 0.95 | 0.63 | 5.27 | 4.08 | 3.08 | 2.30 | 1.80 | 0.64 | 0.03 | 0.00 | 18.88 | a | |||||||||||
1938 | 0.02 | 1.14 | 0.13 | 0.72 | 2.37 | 4.79 | 3.88 | 1.53 | 2.42 | 1.32 | a | 0.51 | 0.47 | 19.30 | ||||||||||||
1939 | 2.08 | 0.60 | 0.17 | 0.88 | 2.15 | 1.40 | 5.69 | 2.03 | 1.21 | 0.00 | 0.25 | 0.80 | 17.26 | |||||||||||||
1940 | 2.79 | 1.29 | a | 0.48 | 0.56 | 2.87 | 1.04 | 0.10 | 4.21 | 0.24 | 0.02 | 2.53 | 0.35 | 16.48 | ||||||||||||
1941 | 0.93 | 0.25 | 2.79 | 4.05 | 8.03 | a | 2.42 | a | 4.03 | 4.20 | 14.08 | 3.19 | 0.03 | 0.08 | 44.08 | |||||||||||
1942 | 0.01 | 0.12 | 0.25 | 7.43 | 0.16 | 1.92 | 2.20 | 5.55 | 2.57 | a | 3.02 | 0.00 | 0.62 | 23.85 | ||||||||||||
1943 | 0.14 | 0.13 | 0.01 | 0.01 | 0.49 | 0.87 | 2.25 | 1.87 | 0.34 | 0.16 | 0.65 | 1.38 | 8.30 | |||||||||||||
1944 | 0.67 | 0.44 | 0.03 | 1.62 | 2.17 | 1.18 | 2.50 | 3.31 | 2.34 | 0.40 | 0.74 | 0.63 | 16.03 | |||||||||||||
1945 | 0.93 | 0.33 | 0.19 | 0.59 | 0.33 | 2.19 | a | 1.88 | 3.65 | 1.75 | 0.39 | 0.00 | 0.00 | 12.23 | ||||||||||||
1946 | 0.29 | 0.05 | 0.80 | 0.83 | 2.14 | 0.27 | 2.07 | 2.23 | 2.51 | 1.15 | 1.04 | 0.00 | 13.38 | |||||||||||||
1947 | 0.12 | 0.04 | 0.16 | 0.25 | 4.67 | 1.42 | 1.33 | ----- | z | 0.05 | 0.67 | 0.28 | 0.86 | 9.85 | a | |||||||||||
1948 | 0.69 | 1.05 | S | 1.14 | a | 0.55 | 3.17 | 2.11 | 1.00 | 1.19 | 0.00 | 0.32 | 1.17 | 0.00 | 12.39 | |||||||||||
1949 | 1.21 | 1.41 | 0.78 | 1.66 | 1.78 | 5.12 | 3.18 | a | 2.32 | 2.13 | 0.10 | 0.00 | 0.59 | a | 20.28 | |||||||||||
1950 | 0.00 | 0.02 | 0.10 | 0.28 | 0.64 | 1.04 | 4.03 | j | 0.78 | 2.52 | 0.00 | ----- | z | ----- | z | 5.38 | c | |||||||||
1951 | ----- | z | 0.45 | h | 0.53 | 0.51 | 3.23 | 1.81 | 3.66 | 2.43 | 0.09 | 0.37 | 0.31 | 0.21 | 13.15 | b | ||||||||||
1952 | 0.33 | 0.64 | 0.71 | 1.82 | 1.50 | 1.62 | 1.28 | 4.14 | 0.67 | 0.00 | 0.77 | 0.44 | 13.92 | |||||||||||||
1953 | 0.00 | 0.78 | 0.58 | 0.67 | 1.07 | 0.48 | 3.57 | 2.05 | 0.85 | 0.62 | 2.21 | 0.77 | 13.65 | |||||||||||||
1954 | 0.27 | 0.10 | 0.01 | 0.01 | 1.94 | 0.85 | 2.21 | 1.16 | 1.80 | 2.48 | 0.20 | 0.04 | 11.07 | |||||||||||||
1955 | 0.08 | 0.23 | 0.00 | 0.25 | 2.84 | 0.84 | 3.26 | 3.65 | 2.05 | 0.00 | 0.00 | 0.00 | 13.20 | |||||||||||||
1956 | 0.05 | 0.15 | 0.00 | 0.16 | 1.05 | 1.38 | 1.18 | 1.18 | 0.00 | 0.30 | 0.00 | 0.00 | 5.45 | |||||||||||||
1957 | 0.15 | 0.02 | 0.82 | 1.64 | 1.85 | 0.05 | 2.61 | 6.30 | 0.42 | q | ----- | z | 0.56 | f | 0.00 | 13.44 | c | |||||||||
1958 | 0.51 | ----- | z | ----- | z | 0.00 | v | 2.82 | 0.45 | 2.49 | 5.47 | 1.99 | 0.82 | 0.45 | 0.30 | 15.30 | c | |||||||||
1959 | 0.00 | 0.20 | 0.10 | 0.20 | 2.74 | 1.73 | 1.66 | 6.05 | 0.50 | 1.96 | 0.00 | 1.15 | 16.29 | |||||||||||||
1960 | 0.93 | 0.05 | 0.75 | 0.00 | 0.38 | 4.02 | 5.05 | 3.45 | 2.87 | 3.82 | 0.00 | 0.90 | 22.22 | |||||||||||||
1961 | 0.10 | ----- | z | ----- | z | ----- | z | ----- | z | 1.63 | 7.32 | 5.69 | 3.55 | 1.52 | 0.55 | 0.10 | 20.46 | d | ||||||||
1962 | ----- | z | ----- | z | ----- | z | 0.68 | 1.35 | 4.01 | 4.30 | 0.32 | 2.32 | 0.00 | 0.74 | ----- | z | 13.72 | d | ||||||||
1963 | 0.10 | j | 0.45 | 0.15 | 0.00 | 3.26 | 1.25 | 0.76 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 5.87 | f | ||||||
1964 | 0.00 | ----- | z | ----- | z | ----- | z | ----- | z | 0.74 | 1.22 | 1.47 | 2.96 | 0.00 | 1.06 | 0.46 | 7.91 | d | ||||||||
1965 | 0.42 | 0.00 | 1.32 | 1.10 | 1.79 | 4.75 | 3.24 | 1.44 | 3.06 | 1.05 | 0.00 | 1.49 | 19.66 | |||||||||||||
1966 | 0.50 | 0.28 | 0.00 | 0.94 | ----- | z | ----- | z | 6.41 | 3.11 | 1.80 | ----- | z | ----- | z | 0.43 | 13.47 | d | ||||||||
1967 | 0.20 | 0.00 | 0.00 | 0.64 | 1.82 | 3.36 | 6.20 | 3.88 | 1.77 | 0.21 | 0.14 | 1.13 | 19.35 | |||||||||||||
1968 | 0.48 | 0.00 | 1.08 | 0.65 | 0.82 | 0.33 | 3.55 | 3.35 | 0.42 | 0.00 | 0.36 | 0.30 | 11.34 | |||||||||||||
1969 | 0.00 | 1.14 | 1.02 | 1.55 | 5.33 | 3.86 | 3.13 | 5.25 | 3.29 | 3.58 | 0.00 | a | ----- | z | 28.15 | a | ||||||||||
1970 | ----- | z | ----- | z | ----- | z | ----- | z | 1.95 | 0.20 | 2.11 | 1.30 | 2.06 | 1.78 | 0.00 | 0.00 | 9.40 | d | ||||||||
1971 | 0.10 | 0.12 | 0.08 | 0.35 | 2.02 | 0.96 | 3.58 | 2.53 | 0.76 | 1.21 | 1.19 | 0.72 | 13.62 | |||||||||||||
1972 | 0.01 | 0.00 | 0.00 | 0.00 | 1.85 | 3.00 | 3.51 | 4.11 | 3.35 | 1.89 | 0.88 | 0.15 | 18.75 | |||||||||||||
1973 | 0.69 | 0.33 | 1.41 | 0.65 | 0.93 | 1.20 | 4.45 | 1.25 | 1.09 | 0.86 | 0.00 | 0.41 | 13.27 | |||||||||||||
1974 | 0.40 | 0.44 | 0.20 | 0.45 | 0.03 | 0.55 | 2.22 | 2.70 | 0.80 | 2.54 | 0.23 | 0.27 | 10.83 | |||||||||||||
1975 | 0.46 | 0.56 | 0.34 | 0.89 | 1.23 | 1.81 | 1.54 | 2.21 | 2.66 | 0.00 | 0.77 | 0.06 | 12.53 | |||||||||||||
1976 | 0.07 | 0.47 | 0.10 | 0.87 | 2.43 | 0.75 | 2.54 | 0.67 | 2.82 | 0.52 | 0.21 | 0.00 | 11.45 | |||||||||||||
1977 | 0.31 | 0.09 | 0.40 | 3.11 | 3.37 | 0.58 | 1.75 | 5.37 | 0.75 | 0.13 | 0.24 | 0.13 | 16.23 | |||||||||||||
1978 | 0.33 | 0.22 | 0.26 | 0.06 | 1.04 | 3.90 | 0.52 | 0.50 | 0.33 | 0.33 | 4.93 | 0.54 | 12.96 | |||||||||||||
1979 | 1.15 | 0.14 | 0.96 | 1.34 | 3.71 | 2.53 | 2.52 | 4.91 | 0.79 | 0.29 | 0.31 | 0.37 | 19.02 | |||||||||||||
1980 | 0.29 | 0.25 | 0.60 | 3.26 | 2.95 | 0.68 | 2.07 | 1.54 | 3.60 | 0.04 | 0.48 | 0.09 | 15.85 | |||||||||||||
1981 | 0.07 | 0.11 | 2.39 | 0.25 | 3.26 | 1.00 | 2.91 | 7.08 | 4.37 | 1.32 | 0.19 | 0.16 | 23.11 | |||||||||||||
1982 | 0.10 | a | 0.08 | 0.15 | 0.45 | 2.69 | 2.52 | 6.68 | 2.42 | 2.65 | 1.16 | 0.53 | 0.73 | 20.16 | ||||||||||||
1983 | 0.91 | 0.56 | 0.58 | 0.42 | 1.23 | b | 2.28 | 3.01 | 1.52 | 0.62 | 1.06 | 0.44 | 0.87 | 13.50 | ||||||||||||
1984 | 0.31 | 0.05 | 1.31 | 1.40 | 2.40 | 3.62 | 2.23 | 2.67 | 1.03 | 3.30 | 1.23 | 0.70 | 20.25 | |||||||||||||
1985 | 0.50 | 0.39 | 2.35 | 1.00 | 2.66 | 0.92 | 0.86 | 1.27 | 3.58 | 3.32 | 0.18 | 0.03 | 17.06 | |||||||||||||
1986 | 0.10 | 0.79 | 0.14 | 0.59 | 4.10 | 6.95 | 1.74 | 3.37 | 2.13 | 3.40 | 3.29 | 0.66 | 27.26 | |||||||||||||
1987 | 1.26 | 1.83 | 0.27 | 0.49 | 2.31 | 1.89 | 1.30 | a | 4.91 | 0.81 | 0.00 | 1.00 | 1.54 | 17.61 | ||||||||||||
1988 | 0.20 | 0.07 | 0.78 | 1.55 | 2.28 | 3.32 | 3.87 | 2.51 | 2.52 | 0.65 | 0.07 | 0.37 | 18.19 | |||||||||||||
1989 | 0.38 | 0.38 | 0.15 | 0.26 | 1.26 | 3.18 | 1.35 | 3.94 | 3.24 | 0.57 | 0.00 | 0.27 | 14.98 | |||||||||||||
1990 | 1.34 | 1.23 | 0.46 | 0.48 | 1.10 | 0.62 | 4.21 | 5.92 | 2.07 | 0.47 | 1.69 | 0.40 | 19.99 | |||||||||||||
1991 | 0.37 | 0.02 | 0.87 | 0.21 | 1.96 | 1.88 | 2.77 | 2.61 | 3.98 | 0.49 | 1.67 | 1.45 | 18.28 | |||||||||||||
1992 | 0.28 | 0.28 | 0.31 | 1.03 | 1.13 | 2.89 | 3.78 | 3.12 | 0.67 | 0.12 | 0.58 | 0.83 | 15.02 | |||||||||||||
1993 | 0.40 | 0.40 | 2.14 | 0.02 | 1.49 | 3.37 | 1.75 | 6.01 | 0.24 | 0.34 | 0.67 | 0.08 | 16.91 | |||||||||||||
1994 | 0.14 | 0.07 | a | 1.93 | 1.02 | 2.38 | 1.12 | 1.02 | 1.71 | 0.11 | 1.70 | 0.30 | 0.26 | 11.76 | ||||||||||||
1995 | 0.22 | 0.17 | 0.62 | 1.10 | 3.06 | 3.24 | 2.01 | 2.15 | 2.31 | 0.00 | 0.18 | 0.72 | 15.78 | |||||||||||||
1996 | 0.03 | 0.07 | 0.12 | 0.00 | 0.05 | 4.21 | 5.04 | 3.01 | 1.79 | 0.60 | 0.80 | 0.09 | 15.81 | |||||||||||||
1997 | 0.34 | 0.73 | 0.08 | 4.03 | 0.97 | 4.00 | 3.34 | 2.26 | 2.90 | 0.44 | 0.66 | 1.67 | 21.42 | |||||||||||||
1998 | 0.00 | 0.52 | 1.90 | 1.15 | 0.25 | 0.16 | 1.99 | 2.15 | 0.09 | 3.26 | 0.65 | 0.22 | 12.34 | |||||||||||||
1999 | 0.36 | 0.00 | 0.68 | 4.29 | 3.87 | 1.50 | 1.63 | 2.34 | 1.01 | 0.49 | 0.12 | 0.09 | 16.38 | |||||||||||||
2000 | 0.03 | 0.00 | 1.59 | 0.08 | 0.33 | 2.50 | 2.65 | 1.28 | 0.05 | 4.64 | 0.53 | 0.83 | 14.51 | |||||||||||||
2001 | 1.44 | a | 0.84 | 1.39 | 0.28 | 1.94 | 1.82 | 2.10 | 3.51 | 1.07 | 0.02 | 2.75 | 0.43 | 17.59 | ||||||||||||
2002 | 0.34 | 0.02 | 0.00 | 0.20 | 0.39 | 1.76 | 2.69 | 0.82 | 4.47 | 1.61 | 0.31 | 0.79 | 13.40 | |||||||||||||
2003 | 0.00 | 0.04 | 0.47 | 1.60 | 0.10 | 4.02 | 0.52 | 3.23 | 0.51 | 0.96 | 0.64 | 0.11 | 12.20 | |||||||||||||
2004 | 0.17 | 0.53 | 0.95 | 3.65 | 0.10 | 1.88 | 6.30 | 1.36 | 1.70 | 1.21 | 2.39 | 0.41 | 20.65 | |||||||||||||
2005 | 1.86 | 0.58 | 1.76 | 1.14 | 3.07 | 1.54 | 1.50 | 5.21 | 2.48 | 0.48 | 0.20 | 0.00 | 19.82 | |||||||||||||
2006 | 0.03 | 0.00 | 0.16 | 0.38 | 1.25 | 0.70 | 1.93 | 8.34 | 2.14 | 1.27 | 0.26 | 0.53 | 16.99 | |||||||||||||
2007 | 0.42 | 0.11 | 1.48 | 0.41 | 3.12 | 4.34 | 0.87 | 1.34 | 2.63 | 0.28 | 0.18 | 0.69 | 15.87 | |||||||||||||
2008 | 0.20 | 0.15 | 0.31 | 0.19 | 1.61 | 0.11 | 1.72 | 6.31 | 1.42 | 0.95 | 0.20 | 0.42 | 13.59 | |||||||||||||
2009 | 0.01 | 0.21 | 0.32 | 0.35 | 0.37 | 0.20 | 3.51 | 2.10 | 1.86 | 1.42 | 0.04 | 0.49 | 10.88 | |||||||||||||
2010 | 0.80 | 1.01 | 2.00 | 1.09 | 0.79 | 0.87 | 4.28 | 3.87 | 1.72 | 1.80 | 0.00 | 0.36 | 18.59 | |||||||||||||
2011 | ----- | z | 0.72 | 0.37 | ----- | z | ----- | z | ----- | z | 1.02 | t | 3.49 | q | 1.79 | w | ----- | z | ----- | z | 2.13 | x | 1.09 | j | ||
2012 | ----- | z | 0.16 | w | ----- | z | 1.18 | v | 1.41 | 1.94 | 0.38 | 2.42 | 2.52 | 0.10 | ----- | z | ----- | z | 8.77 | f | ||||||
2013 | 0.29 | ----- | z | ----- | z | 0.08 | 0.31 | 2.75 | 4.00 | 1.93 | 5.38 | 0.56 | 0.33 | 0.17 | 15.80 | b | ||||||||||
2014 | 0.06 | 0.04 | 0.01 | 0.13 | 3.09 | 2.59 | 7.23 | 0.92 | 2.85 | 0.55 | 0.68 | 0.76 | 18.91 | |||||||||||||
2015 | 1.65 | 0.82 | 0.23 | 1.18 | 4.31 | 2.42 | 2.42 | 1.46 | 4.25 | 4.31 | 1.20 | 1.09 | 25.34 | |||||||||||||
2016 | 0.36 | 0.40 | 0.17 | 0.87 | 0.88 | 1.60 | 1.68 | 3.29 | 1.75 | 0.00 | 2.91 | 0.22 | 14.13 | |||||||||||||
2017 | 1.31 | 0.33 | 0.59 | 2.76 | 1.98 | 1.74 | 1.29 | 5.31 | 5.95 | 3.19 | 0.18 | 0.02 | 24.65 | |||||||||||||
2018 | 0.00 | 0.07 | 0.18 | 0.75 | 0.84 | 1.09 | 2.66 | 2.83 | 1.83 | 3.74 | 0.12 | 0.83 | 14.94 | |||||||||||||
2019 | 0.35 | 0.22 | 1.37 | 1.22 | 2.02 | 1.43 | 4.73 | c | 2.33 | 1.38 | 0.62 | 0.79 | 0.41 | 16.87 | ||||||||||||
2020 | 0.37 | 0.64 | 0.56 | 0.19 | 0.66 | 0.07 | 3.53 | 1.08 | 1.07 | 0.76 | 0.15 | 0.28 | 9.36 | |||||||||||||
2021 | 0.60 | 0.31 | 1.04 | 0.12 | 2.35 | 1.32 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 5.74 | f | ||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.42 | 0.36 | 0.63 | 0.96 | 2.03 | 1.96 | 2.86 | 3.00 | 2.01 | 1.15 | 0.63 | 0.45 | 16.52 | |||||||||||||
S.D. | 0.52 | 0.38 | 0.65 | 1.19 | 1.38 | 1.50 | 1.66 | 1.77 | 1.81 | 1.32 | 0.84 | 0.41 | 5.24 | |||||||||||||
SKEW | 2.13 | 1.43 | 1.30 | 2.74 | 1.10 | 1.11 | 0.86 | 0.80 | 3.41 | 1.54 | 2.55 | 1.01 | 1.82 | |||||||||||||
MAX | 2.79 | 1.83 | 2.79 | 7.43 | 8.03 | 7.05 | 7.32 | 8.34 | 14.08 | 5.78 | 4.93 | 1.67 | 44.08 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.05 | 0.10 | 0.29 | 0.00 | 0.00 | 0.00 | 0.00 | 5.45 | |||||||||||||
YRS | 89 | 86 | 88 | 89 | 91 | 93 | 92 | 92 | 92 | 91 | 89 | 89 | 78 |