YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1917 | 1.22 | p | 0.85 | 0.12 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.21 | ----- | z | ----- | z | |||
1918 | 1.00 | 0.90 | 2.20 | ----- | z | 0.01 | ----- | z | ----- | z | 0.75 | ----- | z | ----- | z | 0.50 | 0.42 | ----- | z | |||||||
1919 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1920 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1921 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1922 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1923 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1924 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1925 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1930 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1931 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1932 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1934 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | 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 | 0.00 | 0.14 | 0.00 | 0.19 | 0.19 | 0.82 | ----- | z | ||||||
1943 | 3.89 | 1.12 | 1.76 | 0.60 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.72 | 0.00 | 1.15 | 3.89 | |||||||||||||
1944 | 0.23 | 1.17 | 0.31 | 0.72 | 0.00 | 0.05 | ----- | z | ----- | z | ----- | z | 0.00 | 1.94 | 0.28 | ----- | z | |||||||||
1945 | 0.15 | 1.20 | 0.98 | 0.17 | 0.00 | 0.01 | 0.00 | 0.85 | 0.44 | 0.18 | 0.10 | 1.15 | 1.20 | |||||||||||||
1946 | 0.14 | 0.18 | 0.42 | 1.12 | 0.13 | 0.00 | 0.74 | 0.02 | 0.04 | 1.01 | 1.53 | 1.03 | 1.53 | |||||||||||||
1947 | 0.24 | 0.42 | 0.78 | 0.24 | 0.18 | a | 0.00 | 0.00 | 0.24 | 0.00 | 0.14 | 0.02 | 1.47 | 1.47 | a | |||||||||||
1948 | 0.06 | 1.29 | 0.62 | 0.21 | 0.00 | 0.43 | 0.00 | j | 0.00 | 0.00 | 0.60 | 0.00 | 0.89 | b | 1.29 | l | ||||||||||
1949 | 0.59 | 0.50 | 0.20 | 0.00 | 0.40 | 0.00 | 0.00 | c | 0.00 | 0.00 | 0.27 | f | 0.83 | 0.30 | 0.83 | i | ||||||||||
1950 | 0.55 | 0.66 | 0.67 | 0.70 | 0.12 | 0.00 | 0.04 | 0.00 | 0.18 | 0.00 | 0.67 | 0.00 | 0.70 | |||||||||||||
1951 | 0.80 | 0.41 | 0.38 | 0.81 | 0.33 | 0.00 | 0.18 | 0.34 | 0.14 | 0.55 | 0.26 | 1.68 | e | 1.68 | e | |||||||||||
1952 | 1.17 | 0.38 | 1.45 | 0.86 | 0.00 | d | 0.00 | 0.14 | 0.00 | 0.84 | 0.00 | 1.18 | f | 0.99 | b | 1.45 | l | |||||||||
1953 | 0.50 | 0.66 | 0.73 | 0.67 | 0.05 | 0.00 | 0.00 | a | 0.23 | g | 0.00 | 0.46 | 0.70 | 0.13 | 0.73 | h | ||||||||||
1954 | 1.42 | 1.07 | 0.90 | 0.12 | 0.00 | 0.00 | 0.11 | 0.00 | 0.00 | 0.00 | 1.25 | 0.55 | 1.42 | |||||||||||||
1955 | 1.00 | 0.89 | a | 0.15 | 0.22 | 0.74 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.39 | 0.25 | 1.00 | a | |||||||||||
1956 | 1.22 | 0.17 | 0.00 | 0.67 | 0.09 | 0.00 | 0.00 | 0.00 | 0.00 | 0.02 | 0.00 | 0.00 | 1.22 | |||||||||||||
1957 | 1.39 | 0.10 | 1.51 | 0.68 | 0.74 | 0.04 | 0.00 | 0.00 | 0.00 | 0.86 | 0.65 | 0.78 | 1.51 | |||||||||||||
1958 | 0.98 | 1.58 | 1.61 | a | 1.09 | 0.05 | 0.00 | 0.22 | 0.10 | 1.16 | 0.00 | 0.15 | 0.00 | 1.61 | a | |||||||||||
1959 | 0.98 | 1.01 | 0.00 | 0.15 | 0.00 | 0.00 | 0.00 | 0.00 | 0.10 | 0.20 | 0.94 | 0.81 | 1.01 | |||||||||||||
1960 | 0.81 | 0.73 | 0.29 | 0.28 | 0.02 | 0.00 | 0.00 | 0.00 | 0.17 | 0.47 | 0.99 | 0.03 | 0.99 | |||||||||||||
1961 | 0.63 | 0.23 | 0.21 | 0.03 | 0.00 | 0.00 | 0.00 | 0.60 | 0.00 | 0.06 | 0.37 | 1.50 | a | 1.50 | a | |||||||||||
1962 | 1.52 | a | 0.89 | 0.41 | 0.00 | 0.38 | 0.02 | 0.00 | 0.00 | 0.00 | 0.11 | 0.00 | 0.05 | 1.52 | a | |||||||||||
1963 | 0.12 | 2.07 | 0.83 | 0.54 | 0.00 | 0.05 | 0.00 | 0.10 | 1.43 | 0.53 | 0.74 | 0.00 | 2.07 | |||||||||||||
1964 | 0.93 | 0.13 | 0.88 | 0.69 | ----- | z | 0.00 | 0.00 | 0.00 | 0.03 | 0.02 | 1.15 | 0.40 | ----- | z | |||||||||||
1965 | 0.33 | 0.40 | 0.92 | 1.10 | 0.06 | 0.01 | 0.21 | 0.30 | 0.39 | 0.00 | 2.85 | 1.45 | 2.85 | |||||||||||||
1966 | 0.63 | 0.91 | 0.40 | 0.14 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.54 | 0.78 | 2.16 | 2.16 | |||||||||||||
1967 | 1.75 | 0.00 | 0.40 | 0.64 | 0.14 | 0.06 | 0.15 | 0.68 | 2.03 | 0.00 | 1.48 | 0.98 | 2.03 | |||||||||||||
1968 | 0.51 | 0.22 | 0.63 | 0.53 | 0.11 | 0.00 | 0.52 | 0.00 | 0.00 | 0.15 | ----- | z | 0.30 | ----- | z | |||||||||||
1969 | 1.40 | 1.90 | 0.30 | 0.15 | 0.26 | 0.00 | 0.00 | 0.00 | 0.12 | 0.00 | 0.52 | 0.05 | 1.90 | |||||||||||||
1970 | 0.65 | 0.76 | 2.20 | 0.19 | 0.00 | 0.00 | 0.00 | 0.34 | 0.00 | 0.03 | 1.66 | a | 0.66 | 2.20 | a | |||||||||||
1971 | 0.42 | 0.25 | 0.13 | 0.18 | 0.37 | 0.04 | 0.00 | 0.00 | 0.00 | 1.08 | a | 0.04 | 1.40 | 1.40 | a | |||||||||||
1972 | 0.00 | 0.45 | 0.00 | 0.12 | 0.08 | 0.32 | 0.00 | 0.23 | 0.12 | 0.19 | 0.96 | 0.78 | 0.96 | |||||||||||||
1973 | 0.74 | 1.70 | 0.78 | 0.05 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.04 | 1.04 | 0.15 | 1.70 | |||||||||||||
1974 | 2.06 | 0.05 | 0.73 | 0.22 | 0.00 | 0.00 | 1.05 | 0.00 | 0.00 | 0.51 | 0.00 | 0.77 | 2.06 | |||||||||||||
1975 | 0.14 | 0.67 | 0.93 | 1.06 | 0.11 | 0.00 | 0.00 | 0.00 | 0.00 | 0.10 | 0.63 | 0.16 | 1.06 | |||||||||||||
1976 | 0.00 | 1.61 | 0.69 | 0.68 | 0.55 | 0.14 | 0.11 | 0.00 | 2.42 | 1.77 | 0.43 | 0.77 | 2.42 | |||||||||||||
1977 | 0.86 | 0.50 | 0.77 | 0.14 | 2.48 | 0.19 | 0.00 | 1.65 | 0.00 | 0.00 | 0.00 | 1.05 | a | 2.48 | a | |||||||||||
1978 | 1.76 | 0.96 | 1.64 | 0.48 | 0.01 | 0.00 | 0.00 | 0.01 | 0.48 | 0.19 | 0.81 | 0.95 | 1.76 | |||||||||||||
1979 | 2.65 | 0.93 | 0.86 | 0.00 | 0.06 | ----- | z | 0.29 | 0.03 | 0.00 | 0.78 | 0.30 | 0.19 | ----- | z | |||||||||||
1980 | 2.33 | 1.51 | 0.98 | 0.32 | 0.08 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.23 | 2.33 | |||||||||||||
1981 | 0.56 | 1.41 | 0.82 | 0.20 | 0.02 | 0.00 | 0.00 | 0.00 | 0.09 | 0.03 | 0.35 | 0.20 | 1.41 | |||||||||||||
1982 | 1.70 | 0.85 | 1.80 | 0.98 | 0.09 | 0.00 | 0.00 | 1.15 | 0.77 | 0.10 | 1.12 | 0.67 | 1.80 | |||||||||||||
1983 | 0.76 | 1.09 | 1.53 | 0.67 | 0.78 | 0.00 | 0.00 | 0.33 | 0.29 | 0.28 | 0.54 | 1.61 | 1.61 | |||||||||||||
1984 | 0.04 | 0.00 | 0.00 | 0.38 | 0.00 | 0.06 | 0.84 | 0.08 | 0.83 | 0.23 | 0.40 | 0.82 | 0.84 | |||||||||||||
1985 | 0.52 | 0.40 | 0.28 | 0.00 | 0.00 | 0.00 | 0.41 | 0.00 | 0.88 | 0.06 | 1.28 | 0.31 | 1.28 | |||||||||||||
1986 | 0.71 | 1.12 | 0.77 | 0.36 | 0.00 | 0.00 | 0.18 | 0.00 | 0.26 | 0.27 | 0.92 | 0.48 | 1.12 | |||||||||||||
1987 | 1.13 | 0.74 | 0.45 | 0.05 | 0.03 | 0.00 | 0.01 | 0.03 | 0.05 | 1.27 | 0.69 | 0.57 | 1.27 | |||||||||||||
1988 | 1.40 | 0.43 | 0.16 | 0.70 | 0.05 | 0.00 | 0.03 | 1.02 | 0.00 | 0.00 | 0.29 | 0.48 | 1.40 | |||||||||||||
1989 | 0.74 | 0.31 | 0.90 | 0.00 | 0.12 | 0.00 | 0.00 | 0.00 | 0.30 | 0.19 | 0.04 | 0.18 | 0.90 | |||||||||||||
1990 | 1.49 | 0.69 | 0.19 | 0.74 | 0.53 | 0.60 | 0.34 | 0.42 | 0.00 | 0.00 | 0.38 | 0.08 | 1.49 | |||||||||||||
1991 | 0.82 | 2.45 | 2.41 | 0.00 | 0.00 | 0.00 | 0.07 | 0.00 | 0.36 | 0.32 | 0.03 | 0.96 | 2.45 | |||||||||||||
1992 | 1.39 | 1.93 | 0.90 | 0.06 | 1.27 | 0.00 | 0.11 | ----- | z | 0.00 | 0.28 | 0.00 | 0.91 | ----- | z | |||||||||||
1993 | 2.56 | 1.96 | 0.47 | 0.00 | 0.12 | 0.71 | 0.00 | 0.00 | 0.00 | 0.26 | 0.34 | 0.17 | 2.56 | |||||||||||||
1994 | 0.45 | 1.11 | 0.82 | 0.51 | 0.06 | 0.00 | 0.00 | 0.40 | 0.00 | 0.24 | 0.31 | 0.44 | 1.11 | |||||||||||||
1995 | 2.17 | 0.91 | 1.52 | 0.80 | 0.45 | 0.20 | 0.14 | 0.00 | 0.77 | 0.00 | 0.00 | 0.13 | 2.17 | |||||||||||||
1996 | 0.70 | 1.04 | 0.47 | 0.23 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.00 | ----- | z | 0.41 | ----- | z | |||||||||||
1997 | 1.30 | 0.11 | 0.00 | 0.06 | 0.00 | 0.00 | 0.00 | 0.00 | 2.50 | 0.02 | 0.39 | 0.86 | 2.50 | |||||||||||||
1998 | 1.36 | 2.16 | 0.50 | 0.48 | 2.06 | 0.04 | 0.00 | 1.73 | 0.14 | 0.30 | 0.35 | 0.37 | 2.16 | |||||||||||||
1999 | 0.42 | 0.36 | 0.06 | 0.68 | 0.00 | 0.23 | 0.80 | 0.00 | 0.22 | 0.00 | 0.01 | 0.00 | 0.80 | |||||||||||||
2000 | 0.41 | 1.44 | 1.02 | 0.55 | 0.09 | 0.00 | 0.00 | 0.11 | 0.23 | 0.53 | 0.12 | 0.00 | 1.44 | |||||||||||||
2001 | 1.25 | 0.83 | 0.35 | 0.33 | 0.05 | 0.00 | 0.06 | 0.00 | 0.00 | 0.00 | 0.37 | 0.44 | 1.25 | |||||||||||||
2002 | 0.31 | 0.01 | 0.21 | 0.24 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.18 | 1.96 | 1.96 | |||||||||||||
2003 | 0.05 | 1.66 | 2.00 | 1.55 | 0.27 | 0.00 | 0.14 | 0.00 | 0.00 | 0.00 | 1.30 | 0.56 | 2.00 | |||||||||||||
2004 | 0.11 | 0.92 | 0.00 | 0.42 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 2.00 | 1.24 | 1.44 | 2.00 | |||||||||||||
2005 | 1.76 | 1.82 | 0.43 | 0.84 | 0.21 | 0.00 | 1.50 | 0.00 | 0.47 | 1.09 | 0.00 | 0.00 | 1.82 | |||||||||||||
2006 | 1.09 | 1.60 | 1.08 | 1.13 | 0.22 | 0.00 | 0.32 | 0.00 | 0.76 | 0.00 | 0.05 | 0.30 | 1.60 | |||||||||||||
2007 | 0.09 | 0.30 | 0.25 | 0.31 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 2.61 | 0.26 | 2.61 | |||||||||||||
2008 | 1.25 | 0.61 | 0.38 | 0.00 | 0.36 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.04 | 1.25 | h | 1.25 | h | |||||||||||
2009 | 0.22 | 0.31 | 0.12 | 0.08 | 0.00 | 0.02 | 0.00 | 0.00 | 0.00 | 0.08 | 0.37 | 1.62 | 1.62 | |||||||||||||
2010 | 1.73 | 1.61 | 0.16 | 0.34 | 0.00 | 0.00 | 0.06 | 0.04 | 0.17 | 0.38 | 0.20 | 2.54 | 2.54 | |||||||||||||
2011 | 0.23 | 0.13 | g | 0.93 | 0.09 | 0.23 | 0.07 | 0.42 | 0.00 | 0.00 | 0.27 | 0.54 | 0.26 | 0.93 | g | |||||||||||
2012 | 0.10 | m | 0.71 | 0.48 | 0.52 | 0.01 | 0.00 | 0.09 | 0.25 | 0.77 | 0.13 | 0.07 | 0.48 | 0.77 | m | |||||||||||
2013 | 0.28 | 0.26 | 0.75 | d | 0.00 | 0.12 | 0.00 | 0.02 | 0.15 | 0.25 | 0.58 | 0.30 | 0.21 | 0.75 | d | |||||||||||
2014 | 0.01 | 1.53 | 1.50 | 0.42 | 0.00 | 0.00 | 0.00 | 0.48 | 2.20 | 0.00 | 0.31 | 2.50 | 2.50 | |||||||||||||
2015 | 0.09 | 0.66 | 0.55 | 0.16 | 1.00 | 0.19 | 0.68 | 0.00 | 0.55 | 0.29 | 0.15 | 0.25 | 1.00 | |||||||||||||
2016 | 0.96 | 0.23 | 0.20 | 0.13 | 0.42 | 0.00 | 0.00 | 0.00 | 0.27 | 0.16 | 0.61 | 1.00 | 1.00 | |||||||||||||
2017 | 1.22 | 0.83 | 0.10 | 0.00 | 0.15 | 0.00 | 0.02 | 0.23 | 0.00 | 0.00 | 0.07 | 0.00 | 1.22 | |||||||||||||
2018 | 1.75 | 0.44 | 0.75 | 0.02 | 0.19 | 0.00 | 0.15 | 0.00 | 0.00 | 0.77 | 0.34 | 0.69 | 1.75 | |||||||||||||
2019 | 0.75 | 4.60 | 1.16 | 0.10 | 0.58 | 0.00 | 0.00 | 0.00 | 0.15 | 0.00 | 1.38 | 1.02 | 4.60 | |||||||||||||
2020 | 0.17 | 0.25 | 1.68 | 1.28 | 0.00 | 0.00 | 0.00 | 0.80 | 0.00 | 0.00 | 0.38 | 0.84 | 1.68 | |||||||||||||
2021 | 1.41 | 0.22 | 0.60 | 0.18 | 0.04 | 0.03 | 0.37 | 0.00 | 0.05 | 0.44 | 0.00 | 1.23 | 1.41 | |||||||||||||
2022 | 0.12 | 0.43 | 0.33 | 0.37 | 0.00 | 0.08 | 0.00 | 0.00 | 0.08 | 0.70 | 0.65 | 0.50 | 0.70 | |||||||||||||
2023 | 2.05 | 0.45 | 1.75 | 0.04 | 0.22 | 0.05 | 0.05 | 1.55 | 0.10 | 0.05 | 1.20 | 0.52 | 2.05 | |||||||||||||
2024 | ----- | z | 0.72 | q | 1.61 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.91 | 0.88 | 0.74 | 0.40 | 0.21 | 0.05 | 0.13 | 0.19 | 0.29 | 0.29 | 0.56 | 0.67 | 1.71 | |||||||||||||
S.D. | 0.74 | 0.72 | 0.59 | 0.36 | 0.41 | 0.12 | 0.27 | 0.38 | 0.55 | 0.40 | 0.58 | 0.59 | 0.71 | |||||||||||||
SKEW | 1.16 | 1.97 | 0.90 | 0.90 | 3.56 | 3.75 | 2.90 | 2.54 | 2.65 | 2.03 | 1.63 | 1.14 | 1.41 | |||||||||||||
MAX | 3.89 | 4.60 | 2.41 | 1.55 | 2.48 | 0.71 | 1.50 | 1.73 | 2.50 | 2.00 | 2.85 | 2.54 | 4.60 | |||||||||||||
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 | 0.70 | |||||||||||||
YRS | 81 | 82 | 84 | 81 | 81 | 80 | 80 | 80 | 81 | 81 | 81 | 82 | 67 |