YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1919 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 3.08 | s | 0.67 | 0.36 | 3.55 | 0.56 | 1.12 | c | 0.57 | 6.83 | f | |||||
1920 | 0.15 | 0.12 | 0.25 | a | 2.06 | 1.87 | 4.65 | 2.96 | 3.85 | 1.76 | 2.59 | 0.19 | 0.35 | 20.80 | ||||||||||||
1921 | 0.56 | 0.26 | y | ----- | z | 4.53 | 1.60 | 2.28 | 1.98 | 2.89 | 2.31 | 1.35 | 0.20 | 0.80 | 18.50 | b | ||||||||||
1922 | 0.15 | x | 0.30 | 1.00 | 3.16 | 0.83 | 1.90 | 2.74 | 2.35 | 0.11 | 0.00 | 0.60 | 0.20 | 13.19 | a | |||||||||||
1923 | 0.03 | 0.35 | 0.60 | 0.94 | 5.46 | 3.07 | 4.60 | 4.87 | 0.20 | 3.21 | 0.60 | 0.95 | 24.88 | |||||||||||||
1924 | 0.20 | 0.60 | 2.00 | 0.57 | 2.55 | 0.24 | 1.66 | 4.94 | 2.82 | 0.46 | 0.05 | 1.90 | 17.99 | |||||||||||||
1925 | 0.15 | 0.00 | 0.75 | 1.22 | 2.32 | 0.65 | 2.94 | 1.60 | 0.30 | 0.90 | 1.00 | 0.55 | 12.38 | |||||||||||||
1926 | 0.70 | 0.20 | 0.60 | 0.17 | 3.73 | 2.16 | 3.15 | 0.50 | 0.85 | 0.67 | 0.48 | 0.60 | 13.81 | |||||||||||||
1927 | 0.30 | 0.40 | 1.68 | 1.88 | 0.25 | 4.92 | 6.39 | 4.00 | 0.70 | 0.10 | 0.41 | 0.55 | 21.58 | |||||||||||||
1928 | 0.07 | 0.25 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.32 | j | ||
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1930 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1931 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1932 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1934 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 3.48 | 4.77 | 2.88 | 0.40 | ----- | z | 11.53 | h | ||||
1942 | ----- | z | ----- | z | ----- | z | ----- | z | 1.68 | 5.07 | 1.65 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 8.40 | i | |||
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | 1.13 | w | 2.86 | 2.82 | 4.35 | b | 0.54 | 1.05 | 0.17 | 0.04 | 11.83 | e | ||||||
1950 | 0.08 | 0.41 | 0.67 | 0.98 | 1.07 | 0.34 | 3.54 | 2.59 | 1.88 | 0.00 | 0.38 | 0.06 | 12.00 | |||||||||||||
1951 | 0.32 | 0.82 | 0.18 | 1.37 | 4.39 | 6.49 | 7.24 | 1.13 | 1.12 | 0.92 | 0.92 | 0.18 | 25.08 | |||||||||||||
1952 | 0.10 | 0.69 | 0.76 | a | 2.20 | 2.66 | 0.24 | 1.24 | 3.34 | 1.49 | 0.11 | 1.06 | 0.40 | 14.29 | ||||||||||||
1953 | 0.14 | 0.70 | 0.16 | 2.27 | 2.93 | 1.67 | 2.78 | 2.60 | 0.12 | 0.80 | 0.77 | 1.00 | 15.94 | |||||||||||||
1954 | 0.17 | 0.00 | 0.47 | 0.02 | 1.52 | 0.41 | 2.72 | 5.25 | 0.23 | 1.12 | 0.01 | 0.29 | 12.21 | |||||||||||||
1955 | 0.13 | 0.55 | 0.55 | 0.82 | 2.50 | 2.43 | 0.69 | 1.44 | 0.65 | 0.05 | 0.18 | 0.06 | 10.05 | |||||||||||||
1956 | 0.08 | 0.13 | 0.42 | 0.30 | 0.94 | 0.68 | 4.53 | 2.17 | 0.20 | 0.48 | 1.07 | a | 0.52 | 11.52 | ||||||||||||
1957 | 0.12 | 0.00 | 1.38 | 2.81 | 3.63 | 2.51 | 3.88 | 2.42 | 0.66 | 0.75 | 0.28 | 0.24 | 18.68 | |||||||||||||
1958 | 0.33 | 0.47 | 0.98 | 1.32 | 2.20 | 5.16 | 3.82 | 1.16 | 1.57 | 0.79 | 0.28 | 0.22 | 18.30 | |||||||||||||
1959 | 0.39 | 0.17 | 1.35 | 0.27 | 2.53 | 3.79 | 0.60 | 3.36 | 1.19 | 1.44 | 0.08 | 0.49 | f | 15.17 | a | |||||||||||
1960 | 0.84 | 1.06 | 0.80 | 0.94 | 2.75 | 1.40 | 3.55 | 1.80 | 0.38 | 2.18 | 0.26 | 1.15 | 17.11 | |||||||||||||
1961 | 0.04 | 0.33 | 1.18 | 0.53 | 2.98 | 1.93 | 5.68 | 2.37 | 1.91 | 0.13 | 0.76 | 0.32 | 18.16 | |||||||||||||
1962 | 0.57 | 0.15 | 0.94 | 0.11 | 2.14 | 3.38 | 5.17 | 2.16 | 0.49 | 0.38 | 0.47 | 0.07 | 16.03 | |||||||||||||
1963 | 0.47 | 0.08 | 0.88 | 0.17 | 1.09 | 3.99 | 5.49 | 1.79 | 4.94 | 0.70 | 0.37 | 0.10 | 20.07 | |||||||||||||
1964 | 0.05 | 0.86 | 1.19 | 1.12 | 2.24 | 0.96 | 1.24 | 0.64 | 1.14 | 0.01 | 0.45 | 0.02 | 9.92 | |||||||||||||
1965 | 0.65 | 0.56 | 0.47 | 0.00 | 1.58 | 8.82 | 1.92 | 2.94 | 1.85 | 0.45 | 0.01 | 0.21 | 19.46 | |||||||||||||
1966 | 0.29 | 0.16 | 0.31 | 1.36 | 0.89 | 0.86 | 4.43 | 0.64 | 1.84 | 0.25 | 0.02 | 0.06 | 11.11 | |||||||||||||
1967 | 0.31 | 0.02 | 0.06 | 0.44 | 4.12 | 3.36 | 2.36 | 1.98 | 2.36 | 0.51 | 0.35 | 0.27 | 16.14 | |||||||||||||
1968 | 0.02 | 0.13 | 0.46 | 1.27 | 1.97 | 0.57 | 4.99 | 2.21 | 0.30 | 0.20 | 0.37 | 0.49 | 12.98 | |||||||||||||
1969 | 0.01 | 0.07 | 0.63 | 1.35 | 2.91 | 0.94 | 2.34 | 4.76 | 0.24 | 4.03 | 0.28 | 0.21 | 17.77 | |||||||||||||
1970 | 0.00 | 0.00 | 0.28 | 0.80 | 2.12 | 2.64 | 3.11 | 1.64 | 0.57 | 1.59 | 0.88 | 0.01 | 13.64 | |||||||||||||
1971 | 0.40 | 0.37 | 0.42 | 2.18 | 2.41 | 0.89 | 3.98 | 0.61 | 1.66 | 0.15 | 0.94 | 0.06 | 14.07 | |||||||||||||
1972 | 0.20 | 0.16 | 0.13 | 0.83 | 2.67 | 2.51 | 1.96 | 4.62 | 1.87 | ----- | z | 3.00 | 0.90 | 18.85 | a | |||||||||||
1973 | 0.99 | 0.07 | 3.52 | 1.71 | 4.01 | 0.60 | 4.17 | 0.23 | 1.37 | 0.75 | 0.29 | 1.44 | 19.15 | |||||||||||||
1974 | 0.18 | 0.66 | 0.83 | 2.14 | 0.69 | 4.47 | 1.09 | 1.03 | 0.33 | 0.44 | 0.70 | 0.39 | 12.95 | |||||||||||||
1975 | 0.05 | 0.04 | 0.14 | 0.94 | ----- | z | 3.84 | 1.94 | 2.07 | 0.32 | 0.00 | 1.95 | 0.17 | 11.46 | a | |||||||||||
1976 | 0.18 | 0.29 | 0.24 | 1.61 | 1.21 | 1.32 | 0.58 | 1.60 | 2.66 | 0.95 | 0.48 | 0.11 | 11.23 | |||||||||||||
1977 | 0.27 | 0.00 | 0.00 | b | 3.20 | 3.08 | ----- | z | 2.27 | 2.72 | 0.25 | 0.00 | 0.64 | 0.00 | 12.43 | a | ||||||||||
1978 | 0.15 | 0.39 | ----- | z | 0.64 | 2.40 | 2.23 | 1.39 | 1.99 | 0.00 | 1.00 | 0.16 | 0.24 | 10.59 | a | |||||||||||
1979 | 0.31 | 0.33 | 1.99 | 0.92 | 4.01 | 2.87 | 2.09 | 4.15 | 0.57 | 1.58 | 0.48 | 0.45 | 19.75 | |||||||||||||
1980 | 0.40 | 0.24 | 1.57 | a | 3.19 | 2.58 | 2.29 | 1.05 | 2.65 | 2.45 | 0.00 | 0.14 | 0.00 | 16.56 | ||||||||||||
1981 | 0.09 | 0.09 | 4.18 | 0.93 | 3.08 | 1.27 | 1.46 | 2.83 | 2.69 | 0.37 | 0.50 | 0.07 | 17.56 | |||||||||||||
1982 | 0.02 | 0.27 | 0.19 | 0.32 | 3.21 | 3.31 | 2.87 | 0.76 | 1.43 | 0.51 | 0.81 | 0.94 | 14.64 | |||||||||||||
1983 | 0.07 | 0.91 | 2.41 | 2.32 | 2.00 | 5.41 | 1.88 | 1.84 | 0.00 | 1.02 | 1.79 | 0.44 | 20.09 | |||||||||||||
1984 | 0.59 | 1.12 | 1.76 | 3.42 | 2.02 | 2.92 | 0.84 | 1.56 | 1.54 | 2.49 | 0.14 | 0.32 | 18.72 | |||||||||||||
1985 | 0.24 | 0.61 | 0.08 | 1.24 | 4.77 | 0.96 | 3.99 | 0.61 | ----- | z | 0.57 | 0.72 | 0.34 | 14.13 | a | |||||||||||
1986 | 0.05 | 0.48 | 0.31 | 2.64 | 0.82 | 2.55 | 2.53 | 1.69 | 0.99 | 1.46 | 0.15 | 0.28 | 13.95 | |||||||||||||
1987 | 0.20 | 1.53 | 0.91 | 0.50 | 4.51 | 3.50 | 2.42 | 1.01 | 1.06 | 0.07 | 0.90 | 0.57 | 17.18 | |||||||||||||
1988 | 0.63 | 0.07 | 0.21 | 1.33 | 4.06 | 1.29 | k | 4.39 | 1.03 | 1.59 | 0.00 | 0.29 | 0.30 | 13.90 | a | |||||||||||
1989 | 0.21 | 0.18 | 0.31 | b | 0.00 | 2.28 | 2.33 | 1.27 | 1.11 | g | 2.43 | 0.27 | 0.07 | b | 0.26 | 9.61 | a | |||||||||
1990 | 0.99 | 0.44 | 1.06 | 0.92 | 2.92 | 1.63 | 4.98 | 4.04 | 1.48 | 1.28 | 0.91 | 0.00 | 20.65 | |||||||||||||
1991 | 0.18 | 0.00 | 1.69 | 0.29 | 4.25 | 1.58 | 5.55 | 1.45 | 0.00 | 0.82 | 1.19 | d | 1.18 | 18.18 | ||||||||||||
1992 | 1.08 | 0.26 | 1.87 | 0.60 | 0.29 | 6.63 | 1.74 | i | 3.12 | 1.32 | 0.59 | a | 0.85 | d | 0.31 | 16.92 | a | |||||||||
1993 | 0.48 | 0.35 | 0.33 | 0.44 | 1.35 | a | 2.95 | 1.64 | 4.16 | 0.29 | 1.84 | 0.77 | 0.09 | 14.69 | ||||||||||||
1994 | 0.62 | 0.08 | 0.04 | 2.19 | 1.34 | 2.15 | 1.54 | d | 3.58 | 0.07 | 1.44 | 0.59 | 0.32 | 13.96 | ||||||||||||
1995 | 1.31 | 0.45 | 0.94 | 1.68 | 7.08 | 6.25 | 3.08 | 2.81 | 1.43 | 0.28 | 0.27 | 0.03 | 25.61 | |||||||||||||
1996 | 0.18 | 0.04 | 0.56 | 0.87 | d | 3.80 | a | 3.35 | h | 3.70 | 2.14 | 1.18 | 0.27 | 0.00 | d | 0.12 | 12.86 | a | ||||||||
1997 | 0.20 | 0.54 | 0.08 | i | 1.05 | 1.74 | 2.03 | a | 3.78 | d | 2.92 | a | 0.31 | 1.44 | a | 0.47 | c | 0.60 | 15.08 | a | ||||||
1998 | 0.03 | 0.43 | 0.22 | 2.00 | 1.85 | b | 1.61 | 5.38 | 2.83 | 0.18 | 1.23 | 0.15 | 0.12 | 16.03 | ||||||||||||
1999 | 0.14 | 0.00 | 0.37 | 2.55 | 2.56 | 2.85 | 5.12 | 6.66 | 0.92 | a | 0.00 | 0.15 | p | 0.00 | 21.17 | a | ||||||||||
2000 | 0.00 | 0.40 | a | 1.69 | i | 1.78 | c | 2.53 | d | 3.21 | b | 2.91 | g | 1.33 | 0.93 | c | 2.18 | 0.00 | j | 0.10 | k | 12.36 | d | |||
2001 | 0.40 | 0.04 | h | 1.05 | h | 1.50 | 3.75 | 2.48 | b | 4.78 | 0.64 | 1.42 | f | 0.21 | i | 0.32 | i | 0.23 | q | 13.55 | f | |||||
2002 | 0.19 | h | 0.20 | b | 0.45 | o | 0.13 | f | 0.43 | i | 2.52 | g | 0.85 | k | 4.42 | d | 2.12 | 0.98 | e | 0.15 | 0.00 | r | 7.87 | g | ||
2003 | 0.00 | b | 0.03 | c | 1.94 | i | 1.28 | a | 1.86 | 4.10 | a | 0.00 | 1.04 | 0.70 | 0.00 | 0.00 | b | 0.00 | a | 9.01 | a | |||||
2004 | 1.00 | f | 0.26 | 0.08 | 2.40 | 0.57 | 2.37 | a | 4.13 | 1.39 | d | 1.22 | 0.26 | 0.50 | d | 0.20 | 13.38 | a | ||||||||
2005 | 0.25 | 0.00 | 1.02 | 1.72 | 1.27 | 2.70 | 0.83 | 2.68 | w | 0.00 | 3.74 | 0.09 | 0.00 | 11.62 | a | |||||||||||
2006 | 0.15 | 0.00 | 0.45 | 0.32 | 2.56 | 2.02 | 2.15 | 2.21 | 3.95 | 2.10 | 0.18 | 2.40 | 18.49 | |||||||||||||
2007 | 1.06 | 0.10 | 0.00 | 2.96 | 1.86 | 2.70 | 4.35 | 3.04 | 0.99 | 0.21 | 0.20 | 1.03 | 18.50 | |||||||||||||
2008 | 0.10 | e | 0.43 | d | 0.74 | 0.55 | 1.73 | 1.43 | 2.70 | 4.84 | 2.02 | 1.88 | 0.25 | 0.31 | 16.98 | |||||||||||
2009 | 0.06 | 0.02 | 0.38 | 2.22 | 1.15 | 5.82 | 4.66 | 3.02 | 1.33 | 1.87 | 0.20 | 0.02 | 20.75 | |||||||||||||
2010 | 0.00 | 0.20 | 1.25 | 0.85 | 0.52 | 0.98 | 5.63 | 6.77 | 0.18 | 0.45 | 0.00 | 0.25 | 17.08 | |||||||||||||
2011 | 0.20 | 0.20 | e | 0.82 | 2.98 | 4.38 | 2.07 | 2.62 | 0.93 | 0.48 | 0.42 | 0.13 | 0.67 | c | 15.90 | |||||||||||
2012 | 0.00 | 1.40 | 0.37 | 0.82 | 1.16 | 0.53 | 2.30 | 0.69 | 2.28 | 0.00 | 0.00 | 0.00 | r | 9.55 | a | |||||||||||
2013 | 0.27 | 0.57 | 1.02 | 0.45 | 1.76 | 1.43 | 3.26 | 1.85 | 4.90 | 0.37 | 0.12 | 0.26 | 16.26 | |||||||||||||
2014 | 0.92 | 0.22 | 0.36 | 1.20 | 0.83 | 4.15 | 2.03 | 3.22 | 1.12 | 0.25 | 0.59 | 0.21 | 15.10 | |||||||||||||
2015 | 0.31 | ----- | z | 0.94 | 2.28 | 8.24 | 2.92 | 2.33 | 2.70 | 0.89 | b | 1.05 | b | 0.04 | 0.00 | 21.70 | a | |||||||||
2016 | 0.10 | 0.23 | d | 0.46 | d | 1.90 | 4.98 | 2.11 | 1.19 | 1.68 | 0.68 | 0.43 | a | 0.71 | 0.22 | 14.69 | ||||||||||
2017 | 0.67 | 0.00 | 2.25 | 1.92 | 4.38 | 0.91 | 3.54 | d | 4.04 | 2.31 | 0.28 | 0.00 | 0.00 | h | 20.30 | a | ||||||||||
2018 | 0.25 | 0.00 | 0.30 | 1.40 | 1.34 | 2.82 | a | 2.86 | a | 1.86 | 0.46 | 1.73 | 0.00 | 0.00 | 13.02 | |||||||||||
2019 | 0.42 | 0.41 | 1.71 | 2.50 | a | 2.77 | 2.96 | 0.77 | 4.76 | 0.00 | 0.20 | 0.53 | 0.00 | 17.03 | ||||||||||||
2020 | 0.00 | 0.00 | 0.52 | 0.09 | 1.04 | 0.52 | 3.55 | 0.33 | k | ----- | z | ----- | z | ----- | z | ----- | z | 5.72 | e | |||||||
2021 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
2022 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
2023 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.19 | 0.52 | a | ----- | z | ----- | z | 1.71 | j | |
2024 | ----- | z | 0.04 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.04 | k | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.30 | 0.32 | 0.83 | 1.39 | 2.50 | 2.59 | 2.96 | 2.52 | 1.26 | 0.88 | 0.48 | 0.38 | 16.56 | |||||||||||||
S.D. | 0.30 | 0.32 | 0.78 | 0.97 | 1.48 | 1.70 | 1.58 | 1.47 | 1.13 | 0.89 | 0.49 | 0.44 | 3.61 | |||||||||||||
SKEW | 1.44 | 1.57 | 1.94 | 0.70 | 1.21 | 1.09 | 0.38 | 0.70 | 1.40 | 1.48 | 2.35 | 2.23 | 0.39 | |||||||||||||
MAX | 1.31 | 1.53 | 4.18 | 4.53 | 8.24 | 8.82 | 7.24 | 6.77 | 4.94 | 4.03 | 3.00 | 2.40 | 25.61 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.25 | 0.24 | 0.00 | 0.23 | 0.00 | 0.00 | 0.00 | 0.00 | 9.92 | |||||||||||||
YRS | 77 | 78 | 72 | 78 | 78 | 77 | 79 | 79 | 80 | 80 | 78 | 74 | 55 |