YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1925 | 0.40 | 0.00 | 0.02 | 0.42 | 0.80 | 0.07 | 1.52 | 0.82 | 0.04 | 0.60 | 0.18 | 0.30 | 1.52 | |||||||||||||
1926 | 0.20 | 0.00 | 0.55 | 1.68 | 1.30 | 0.41 | 1.39 | 2.52 | 1.35 | 0.75 | 0.23 | 0.44 | 2.52 | |||||||||||||
1927 | 0.05 | 0.14 | 0.00 | 0.32 | 0.23 | 0.69 | 0.93 | 0.45 | 0.58 | 0.17 | 0.00 | 0.40 | 0.93 | |||||||||||||
1928 | 0.17 | 0.32 | 0.09 | 0.16 | 0.55 | 1.00 | 0.50 | 2.30 | 0.15 | 1.20 | ----- | z | ----- | z | ----- | z | ||||||||||
1929 | ----- | z | ----- | z | 2.10 | ----- | z | 1.55 | 1.30 | 0.60 | 0.25 | 1.40 | 1.10 | ----- | z | ----- | z | ----- | z | |||||||
1930 | 0.60 | ----- | z | 0.50 | 0.85 | 0.48 | 0.80 | 0.32 | ----- | z | 0.00 | ----- | z | ----- | z | ----- | z | ----- | z | |||||||
1931 | ----- | z | ----- | z | ----- | z | 1.27 | 1.10 | 0.14 | 0.86 | 1.73 | 0.00 | 0.65 | 0.42 | 0.60 | ----- | z | |||||||||
1932 | 0.00 | 0.85 | 0.37 | 1.35 | 1.35 | 2.80 | 0.70 | 3.20 | 2.00 | 0.55 | ----- | z | 1.30 | ----- | z | |||||||||||
1933 | 0.00 | ----- | z | 0.35 | 0.00 | 0.40 | 0.00 | 2.10 | 2.15 | 1.00 | 0.48 | 1.15 | 0.00 | ----- | z | |||||||||||
1934 | 0.00 | ----- | z | 1.50 | 2.00 | 0.60 | 0.80 | ----- | z | 2.00 | 0.65 | 0.00 | 0.20 | ----- | z | ----- | z | |||||||||
1935 | 0.00 | 0.90 | 0.95 | ----- | z | 0.54 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||||
1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.22 | 0.79 | ----- | z | ||
1947 | ----- | z | 0.00 | 0.41 | 0.21 | 0.72 | 0.14 | 0.76 | l | 0.07 | a | 0.53 | 0.10 | 0.38 | 0.18 | ----- | z | |||||||||
1948 | 0.18 | 0.84 | 0.00 | 0.89 | 0.28 | 0.76 | 2.27 | 1.52 | 1.12 | 0.41 | 0.00 | 0.11 | 2.27 | |||||||||||||
1949 | 0.85 | a | 0.07 | 0.11 | 0.54 | 2.14 | 0.71 | 0.31 | 1.41 | 1.25 | 0.36 | 0.00 | 0.22 | 2.14 | a | |||||||||||
1950 | 0.17 | d | 0.00 | c | 0.00 | 0.12 | 1.53 | 0.87 | 2.70 | 0.73 | 2.50 | 0.06 | 0.00 | 0.00 | 2.70 | g | ||||||||||
1951 | 0.05 | 0.37 | 0.15 | 0.04 | 1.90 | 0.46 | 0.46 | 1.80 | 0.16 | 0.38 | 0.04 | 0.00 | 1.90 | |||||||||||||
1952 | 0.01 | n | 0.35 | 0.04 | 0.43 | 1.03 | 0.68 | 0.65 | 0.16 | 0.87 | 0.00 | 0.20 | 0.00 | 1.03 | n | |||||||||||
1953 | 0.35 | 0.13 | 0.27 | 0.53 | 0.35 | 0.50 | 1.02 | 0.80 | 0.24 | 1.88 | 0.01 | 0.12 | 1.88 | |||||||||||||
1954 | 0.00 | 0.00 | 0.00 | 2.15 | 2.47 | 0.75 | 0.88 | 1.05 | 1.15 | 1.95 | 0.05 | 0.21 | 2.47 | |||||||||||||
1955 | 0.50 | 0.01 | 0.11 | 0.54 | 0.56 | 0.37 | 1.14 | k | 0.17 | 0.39 | 6.00 | 0.21 | 0.00 | 6.00 | k | |||||||||||
1956 | 0.00 | 0.98 | d | 0.00 | 0.09 | a | 0.82 | 1.24 | 0.62 | 0.46 | 0.00 | 1.53 | 0.01 | 0.18 | 1.53 | e | ||||||||||
1957 | 0.08 | 0.46 | 0.39 | 0.67 | 0.89 | 0.96 | 3.05 | 0.67 | 0.30 | 1.71 | 0.25 | 0.09 | 3.05 | |||||||||||||
1958 | 1.28 | 0.33 | 0.45 | 0.76 | a | 0.28 | 0.68 | 1.32 | 0.13 | 5.55 | 0.51 | 0.49 | 0.00 | 5.55 | a | |||||||||||
1959 | 0.04 | 0.05 | 0.03 | 0.78 | 0.50 | 1.69 | 0.64 | 0.45 | 0.47 | 1.17 | 0.02 | 0.70 | 1.69 | |||||||||||||
1960 | 0.38 | 0.16 | 0.64 | 0.03 | 0.68 | 0.96 | 6.11 | 0.17 | 0.10 | 2.01 | 0.02 | 1.21 | 6.11 | |||||||||||||
1961 | 0.59 | 1.77 | 0.34 | 0.05 | 0.31 | 0.75 | 0.91 | 0.89 | 0.78 | 0.06 | 1.16 | 0.19 | 1.77 | |||||||||||||
1962 | 0.21 | 0.20 | 0.10 | 0.38 | 0.16 | 1.76 | 1.09 | 0.16 | 1.41 | 1.00 | 0.35 | 0.14 | 1.76 | |||||||||||||
1963 | 0.00 | 0.23 | 0.05 | 0.47 | 0.93 | 2.21 | 0.94 | 1.39 | 0.20 | 0.63 | 0.45 | 0.23 | 2.21 | |||||||||||||
1964 | 0.12 | 0.12 | ----- | z | ----- | z | ----- | z | 0.48 | k | 0.20 | 0.75 | 0.60 | 0.04 | 0.20 | 0.42 | ----- | z | ||||||||
1965 | 0.00 | 0.25 | 0.00 | 0.17 | 0.38 | 1.85 | 1.31 | 1.08 | 0.79 | 0.23 | 0.00 | 0.50 | 1.85 | |||||||||||||
1966 | 0.13 | ----- | z | 0.00 | 0.00 | 0.00 | 0.75 | 0.32 | 5.40 | 1.40 | 0.00 | 0.40 | 0.04 | ----- | z | |||||||||||
1967 | 0.00 | 0.03 | 0.09 | 0.11 | 0.00 | 2.20 | 1.58 | 0.21 | 2.00 | 0.43 | 0.09 | 0.54 | 2.20 | |||||||||||||
1968 | 0.74 | 0.33 | 0.90 | 0.40 | 0.82 | 0.37 | 1.80 | 1.25 | 0.15 | 0.45 | 0.75 | 0.32 | 1.80 | |||||||||||||
1969 | 0.05 | 0.72 | 0.83 | 0.79 | 2.15 | 0.48 | 0.28 | 0.76 | 2.75 | 1.96 | 0.16 | 0.23 | 2.75 | |||||||||||||
1970 | 0.00 | 0.20 | 1.65 | 0.40 | 0.52 | 1.40 | 0.30 | 0.80 | 0.50 | 0.60 | 0.00 | 0.05 | 1.65 | |||||||||||||
1971 | 0.00 | 0.00 | c | 0.00 | 0.40 | 1.10 | 0.24 | 0.60 | 1.20 | 1.44 | 0.48 | 0.29 | 0.77 | 1.44 | c | |||||||||||
1972 | 0.04 | 0.00 | 0.56 | 0.00 | 1.40 | 0.58 | 0.76 | 1.78 | 1.91 | 0.70 | 0.46 | 0.22 | 1.91 | |||||||||||||
1973 | 0.53 | 0.98 | 0.78 | 3.30 | 0.43 | 0.12 | 0.51 | 0.08 | 0.38 | 0.72 | 0.00 | 0.00 | 3.30 | |||||||||||||
1974 | 0.13 | 0.00 | 0.73 | 0.81 | 1.13 | 0.45 | 1.25 | 2.00 | 1.83 | 1.14 | 0.24 | 0.50 | 2.00 | |||||||||||||
1975 | 0.17 | 0.60 | 0.00 | 0.50 | 1.96 | 0.80 | 1.15 | 0.28 | 1.10 | 0.13 | 0.20 | 0.38 | 1.96 | |||||||||||||
1976 | 0.00 | 0.40 | 0.05 | 0.30 | 0.44 | 0.30 | 0.80 | 1.60 | 0.90 | 0.83 | 0.50 | 0.00 | 1.60 | |||||||||||||
1977 | 0.07 | 0.26 | 0.93 | 2.50 | 0.46 | b | 1.37 | 0.67 | 0.58 | 0.26 | 0.22 | 0.09 | 0.08 | 2.50 | b | |||||||||||
1978 | 0.31 | 0.46 | 0.05 | 0.23 | 0.81 | 1.50 | 0.12 | 0.82 | 0.55 | 0.70 | 1.70 | 0.04 | 1.70 | |||||||||||||
1979 | 0.10 | 0.80 | 0.13 | 0.11 | 1.14 | 1.50 | 1.04 | 1.09 | 0.00 | 0.20 | 0.20 | 0.72 | 1.50 | |||||||||||||
1980 | 1.30 | 0.50 | 0.15 | 0.64 | ----- | z | ----- | z | 0.00 | 0.57 | 2.00 | 0.03 | 0.68 | 0.08 | ----- | z | ||||||||||
1981 | 0.00 | 0.00 | 0.23 | i | 0.87 | b | 1.70 | 1.18 | 1.39 | 1.26 | 3.00 | c | 2.00 | 0.00 | 0.00 | 3.00 | n | |||||||||
1982 | 0.68 | a | 0.06 | 0.00 | 0.37 | 1.51 | x | 1.23 | 4.03 | 0.00 | 2.14 | 0.53 | a | 0.28 | 2.00 | ----- | z | |||||||||
1983 | 0.81 | 0.12 | 0.00 | 0.00 | 1.25 | 0.32 | 1.03 | a | 0.66 | 0.00 | a | 1.35 | 0.23 | 0.01 | o | 1.35 | q | |||||||||
1984 | 0.00 | 0.00 | ----- | z | 0.00 | 1.16 | 1.27 | 0.87 | 1.03 | 1.05 | 1.20 | 1.24 | 0.66 | ----- | z | |||||||||||
1985 | ----- | z | 0.41 | 0.74 | 0.18 | 0.63 | 1.60 | 1.90 | 0.47 | a | 2.60 | 3.80 | 0.27 | 0.00 | ----- | z | ||||||||||
1986 | ----- | z | ----- | z | 0.00 | b | 0.00 | 1.73 | 1.75 | 0.65 | 1.76 | 0.70 | 0.82 | 1.13 | 1.30 | ----- | z | |||||||||
1987 | 0.51 | 0.70 | 0.10 | 0.00 | 1.36 | 1.33 | 0.60 | 2.08 | 0.70 | 0.50 | 0.00 | 1.28 | 2.08 | |||||||||||||
1988 | 0.00 | 2.00 | 0.00 | 0.80 | 0.97 | 1.63 | 4.20 | ----- | z | 2.00 | 0.00 | 0.00 | 0.92 | ----- | z | |||||||||||
1989 | 0.00 | 0.30 | 0.94 | 0.00 | 0.30 | 2.05 | 1.27 | 1.84 | 0.55 | 0.00 | 0.00 | 0.10 | 2.05 | |||||||||||||
1990 | 0.74 | 1.30 | 0.27 | 0.90 | 0.30 | a | 0.16 | 3.80 | 0.80 | 0.97 | 0.30 | 0.73 | 0.50 | 3.80 | a | |||||||||||
1991 | 0.80 | 0.70 | 0.72 | 0.00 | 0.20 | 0.65 | 1.04 | 1.00 | 0.00 | t | 0.35 | a | 1.43 | 1.12 | 1.43 | u | ||||||||||
1992 | 0.68 | 0.44 | 0.87 | 0.16 | 1.80 | 1.35 | 1.40 | 1.18 | 0.00 | 0.06 | 1.20 | 0.40 | 1.80 | |||||||||||||
1993 | 0.43 | 0.32 | y | ----- | z | ----- | z | 0.18 | 0.46 | ----- | z | 0.43 | y | 0.41 | y | ----- | z | ----- | z | ----- | z | ----- | z | |||
1994 | ----- | z | ----- | z | 0.25 | 0.40 | 1.23 | x | 0.00 | ----- | z | 0.69 | ----- | z | 0.17 | ----- | z | ----- | z | ----- | z | |||||
1995 | ----- | z | ----- | z | ----- | z | ----- | z | 0.88 | w | 1.01 | 0.68 | ----- | z | 2.29 | t | 0.00 | ----- | z | ----- | z | ----- | z | |||
1996 | 0.09 | a | ----- | z | ----- | z | 0.59 | ----- | z | 0.86 | o | 0.54 | y | 2.23 | u | 0.60 | 0.15 | ----- | z | 0.00 | ----- | z | ||||
1997 | 0.41 | w | 0.67 | t | ----- | z | 1.67 | x | ----- | z | 1.02 | y | ----- | z | 1.70 | y | ----- | z | ----- | z | ----- | z | 0.85 | ----- | z | |
1998 | ----- | z | 0.37 | 0.65 | 0.14 | 0.00 | 0.11 | 0.15 | 1.48 | 0.41 | 0.48 | 0.00 | ----- | z | ----- | z | ||||||||||
1999 | 0.35 | 0.00 | 2.77 | 4.00 | 1.46 | 0.96 | 1.52 | 1.65 | 2.82 | 0.40 | 0.00 | 0.31 | 4.00 | |||||||||||||
2000 | 0.15 | 0.01 | 1.04 | 0.83 | 0.07 | 2.13 | 0.20 | ----- | z | 0.00 | 0.93 | 0.89 | 0.00 | b | ----- | z | ||||||||||
2001 | 0.52 | 0.10 | 1.67 | 0.06 | 0.87 | 0.13 | 0.34 | 0.91 | 0.86 | 0.22 | 0.40 | 0.09 | 1.67 | |||||||||||||
2002 | 0.37 | 0.39 | 1.85 | j | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||
2003 | ----- | z | ----- | z | ----- | z | 0.00 | ----- | z | 0.49 | t | ----- | z | ----- | z | 0.73 | 0.40 | 0.20 | 0.00 | ----- | z | |||||
2004 | 0.66 | 1.14 | 1.05 | 1.80 | 0.05 | 0.50 | 0.44 | 0.55 | 6.35 | a | 4.14 | 2.76 | a | 0.20 | 6.35 | b | ||||||||||
2005 | 0.43 | a | 0.68 | 0.22 | 0.29 | a | 3.08 | c | 0.10 | 1.61 | 2.65 | a | 0.15 | 1.62 | 0.00 | 0.00 | 3.08 | f | ||||||||
2006 | 0.00 | 0.00 | 1.26 | 0.40 | 0.06 | 1.13 | 1.14 | a | 3.10 | f | 2.00 | 0.47 | 0.20 | 0.77 | 3.10 | g | ||||||||||
2007 | 1.15 | 0.06 | 1.69 | d | 0.29 | e | 1.07 | e | 1.25 | d | 0.75 | e | 0.58 | 1.57 | c | 0.12 | h | 0.35 | b | 0.47 | l | ----- | z | |||
2008 | 0.00 | i | 0.00 | i | 0.24 | 0.00 | h | 1.78 | l | 0.64 | j | 0.84 | h | 1.23 | h | 2.11 | h | 0.76 | i | 0.01 | 0.11 | ----- | z | |||
2009 | 0.00 | 0.44 | 0.06 | 0.76 | 0.41 | 2.30 | 1.93 | 0.13 | 0.34 | 0.37 | 0.15 | 0.29 | b | 2.30 | b | |||||||||||
2010 | 0.65 | 1.15 | 0.54 | 0.42 | 0.65 | 0.62 | 3.73 | d | 0.34 | 0.78 | a | 0.20 | 0.16 | 0.00 | 3.73 | e | ||||||||||
2011 | 0.00 | 0.01 | 0.00 | 0.00 | 0.40 | 0.00 | 0.56 | 0.02 | 0.82 | 0.57 | 0.03 | 0.43 | 0.82 | |||||||||||||
2012 | 0.15 | 0.13 | 0.17 | 0.31 | 1.32 | 0.13 | 0.71 | 0.52 | 0.91 | 0.40 | 0.04 | 0.48 | 1.32 | |||||||||||||
2013 | 0.72 | 0.32 | 0.03 | 0.00 | 0.59 | 1.25 | 2.00 | 0.41 | 0.22 | 0.82 | 0.35 | 0.32 | 2.00 | |||||||||||||
2014 | 0.00 | 0.16 | 0.13 | 0.08 | 1.42 | 0.84 | 3.59 | 0.24 | 1.69 | 0.18 | 1.02 | 0.28 | 3.59 | |||||||||||||
2015 | 0.63 | 0.21 | 0.14 | 3.74 | 3.83 | 1.00 | 1.18 | a | 0.39 | a | 0.82 | 1.97 | 0.31 | 0.53 | 3.83 | b | ||||||||||
2016 | 0.05 | 0.17 | 0.00 | 0.49 | 0.63 | 1.83 | 0.40 | 2.31 | 0.47 | 1.08 | 1.22 | 0.33 | 2.31 | |||||||||||||
2017 | 0.83 | 0.65 | 0.00 | 1.00 | 0.03 | 1.16 | 1.38 | 3.08 | 0.73 | 0.46 | 0.03 | 0.00 | 3.08 | |||||||||||||
2018 | 0.00 | 0.09 | 0.36 | 0.02 | 0.19 | 0.70 | 0.51 | 1.13 | 1.27 | 1.14 | 0.01 | 0.57 | 1.27 | |||||||||||||
2019 | 0.02 | 0.03 | 1.08 | 0.42 | 0.77 | 1.58 | 1.36 | 0.30 | 1.63 | 1.01 | 0.60 | 0.92 | 1.63 | |||||||||||||
2020 | 0.12 | 0.39 | b | 1.02 | 0.04 | 0.09 | 0.07 | 0.33 | 0.30 | 0.04 | 0.13 | 0.21 | 0.00 | 1.02 | b | |||||||||||
2021 | 0.32 | 0.12 | 0.11 | 0.44 | 1.20 | 1.00 | 0.30 | 0.93 | 0.48 | 0.95 | 0.20 | 0.00 | 1.20 | |||||||||||||
2022 | 0.17 | 0.08 | 0.14 | 0.00 | 1.03 | 0.50 | 0.18 | 0.45 | 0.08 | 1.07 | 0.58 | 0.34 | 1.07 | |||||||||||||
2023 | 0.17 | 0.10 | 0.00 | 0.07 | 1.04 | 1.17 | 0.12 | 0.72 | 1.08 | 2.26 | 0.05 | 0.68 | 2.26 | |||||||||||||
2024 | 0.10 | 0.25 | 0.06 | 0.13 | e | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.29 | 0.36 | 0.44 | 0.59 | 0.89 | 0.92 | 1.19 | 1.05 | 1.04 | 0.82 | 0.36 | 0.36 | 2.31 | |||||||||||||
S.D. | 0.33 | 0.41 | 0.56 | 0.80 | 0.72 | 0.64 | 1.11 | 0.91 | 1.10 | 0.97 | 0.48 | 0.40 | 1.20 | |||||||||||||
SKEW | 1.20 | 1.78 | 1.78 | 2.53 | 1.45 | 0.59 | 2.08 | 1.88 | 2.45 | 2.84 | 2.35 | 1.55 | 1.84 | |||||||||||||
MAX | 1.30 | 2.00 | 2.77 | 4.00 | 3.83 | 2.80 | 6.11 | 5.40 | 6.35 | 6.00 | 2.76 | 2.00 | 6.35 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.82 | |||||||||||||
YRS | 77 | 75 | 79 | 81 | 78 | 80 | 77 | 76 | 80 | 81 | 78 | 77 | 50 |