YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
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 | 0.23 | 0.00 | 0.72 | a | 0.81 | 0.03 | 0.07 | 0.36 | 0.59 | 0.22 | 0.31 | 1.20 | 0.04 | 4.58 | ||||||||||||
1947 | 0.15 | 0.05 | 0.02 | 0.03 | 0.63 | 0.26 | 0.18 | 3.74 | 0.14 | 1.67 | 0.12 | 0.33 | 7.32 | |||||||||||||
1948 | 0.21 | 1.28 | 0.18 | 0.01 | 0.00 | 1.09 | 0.38 | a | 1.20 | 0.63 | 1.19 | 0.02 | 1.07 | 7.26 | ||||||||||||
1949 | 1.45 | 0.50 | 0.53 | 0.22 | 0.85 | 1.36 | 1.05 | 0.58 | 0.80 | 0.61 | 0.30 | 0.14 | 8.39 | |||||||||||||
1950 | 0.13 | 0.69 | 0.22 | 0.10 | 0.13 | 0.03 | ----- | z | 0.08 | 0.36 | 0.00 | 0.00 | 0.00 | 1.74 | a | |||||||||||
1951 | 0.00 | 0.20 | 0.24 | 0.17 | 0.40 | 0.00 | 0.73 | 0.98 | 0.00 | c | 0.30 | f | ----- | z | 0.20 | n | 2.72 | c | ||||||||
1952 | 1.06 | 0.11 | 0.19 | 1.09 | 0.05 | 0.81 | 1.98 | 0.07 | 1.60 | 0.00 | 0.78 | 0.56 | 8.30 | |||||||||||||
1953 | 0.17 | 0.30 | 0.00 | 0.34 | 0.02 | 0.02 | 1.08 | 1.09 | 0.05 | 0.72 | 0.53 | 0.13 | 4.45 | |||||||||||||
1954 | 0.26 | 0.06 | 0.63 | 0.09 | 0.22 | 0.11 | 1.02 | 0.13 | 0.72 | 0.20 | 0.25 | 0.54 | 4.23 | |||||||||||||
1955 | 0.33 | 0.22 | 0.00 | 0.04 | 0.06 | 0.35 | 0.12 | 1.01 | 0.00 | 0.00 | 0.35 | 0.15 | 2.63 | |||||||||||||
1956 | 0.69 | 0.02 | 0.58 | 0.07 | 0.14 | 0.04 | 0.87 | 0.61 | 0.00 | 0.57 | 0.34 | 0.05 | 3.98 | |||||||||||||
1957 | 1.50 | 0.44 | 0.22 | 0.61 | 1.68 | 0.27 | 0.14 | 1.72 | 0.00 | 1.62 | 0.77 | 0.60 | 9.57 | |||||||||||||
1958 | 0.10 | 0.93 | 0.69 | 0.04 | 0.07 | 0.14 | 0.43 | 0.05 | 0.18 | 0.94 | 0.39 | 0.00 | 3.96 | |||||||||||||
1959 | 0.13 | 0.62 | 0.03 | 0.39 | 0.01 | 0.14 | 0.09 | 0.71 | 0.03 | 0.93 | 0.65 | 0.84 | 4.57 | |||||||||||||
1960 | 0.25 | 0.46 | 0.22 | 0.42 | 0.12 | 0.10 | 0.10 | 0.02 | 0.88 | 1.95 | 0.29 | 0.97 | 5.78 | |||||||||||||
1961 | 0.41 | 0.02 | 0.79 | 0.43 | 0.16 | 0.00 | 0.72 | 1.03 | 1.15 | 1.16 | 0.53 | 0.14 | c | 6.54 | ||||||||||||
1962 | 0.04 | 0.45 | 0.33 | 0.10 | 0.00 | 0.23 | ----- | z | 0.04 | x | 1.13 | 1.17 | 0.87 | 0.27 | 4.59 | b | ||||||||||
1963 | ----- | z | 0.26 | 0.35 | 0.10 | 0.08 | 0.00 | 0.37 | 1.03 | b | 0.93 | 0.70 | 0.00 | 0.00 | 3.82 | a | ||||||||||
1964 | 0.00 | ----- | z | 0.05 | 0.16 | 0.36 | 0.00 | 0.77 | 0.22 | 0.38 | 0.00 | 0.60 | 0.80 | 3.34 | a | |||||||||||
1965 | 0.37 | 0.58 | 0.72 | 0.75 | 0.34 | 0.40 | 0.78 | 0.62 | 1.10 | 0.97 | 1.09 | 1.53 | 9.25 | |||||||||||||
1966 | 0.27 | 0.78 | 0.00 | 0.07 | 0.61 | 0.01 | 2.33 | 1.40 | 0.31 | 0.14 | 0.36 | 1.16 | 7.44 | |||||||||||||
1967 | 0.20 | 0.04 | 0.06 | 0.03 | 0.54 | 0.46 | 0.25 | 1.42 | 0.59 | 0.17 | 0.08 | 1.00 | 4.84 | |||||||||||||
1968 | 0.01 | 0.58 | 0.55 | 0.39 | 0.07 | 0.00 | 1.71 | 1.14 | 0.10 | 0.71 | 0.40 | 0.50 | 6.16 | |||||||||||||
1969 | 0.87 | 0.86 | 0.20 | 0.06 | 0.45 | 0.27 | 0.92 | 1.17 | 0.12 | ----- | z | ----- | z | ----- | z | 4.92 | c | |||||||||
1970 | 0.37 | 0.65 | 0.68 | 0.42 | 0.26 | 0.20 | 0.23 | 0.78 | 1.86 | 0.13 | 0.45 | 0.33 | 6.36 | |||||||||||||
1971 | 0.00 | 0.01 | 0.00 | 0.03 | 0.22 | 0.00 | 0.01 | 1.53 | 0.46 | 1.82 | 0.21 | 1.47 | 5.76 | |||||||||||||
1972 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.81 | 0.56 | 0.29 | 0.34 | 6.20 | 0.60 | 1.13 | 9.93 | |||||||||||||
1973 | 0.39 | 0.39 | 1.74 | 0.74 | 0.38 | 1.08 | 0.07 | 0.34 | 0.62 | 0.41 | 0.69 | 0.08 | 6.93 | |||||||||||||
1974 | 1.52 | 0.45 | 0.10 | 0.10 | 0.00 | 0.00 | 0.59 | 0.06 | 0.16 | 1.64 | 0.74 | 0.13 | 5.49 | |||||||||||||
1975 | 0.25 | 0.63 | 0.74 | 0.56 | 0.33 | 0.05 | 1.37 | 0.18 | 0.31 | 0.00 | 0.41 | 0.12 | 4.95 | |||||||||||||
1976 | 0.00 | 0.38 | 0.05 | 0.07 | 1.03 | 0.07 | 1.02 | 0.14 | 1.41 | 0.10 | 0.04 | 0.00 | 4.31 | |||||||||||||
1977 | 0.90 | 0.08 | 0.00 | 0.00 | 0.00 | 0.01 | 1.12 | 0.16 | 0.05 | 0.17 | 0.14 | 0.41 | 3.04 | |||||||||||||
1978 | 2.02 | 1.00 | 0.86 | 0.42 | 0.68 | 0.02 | 0.02 | 0.04 | 0.30 | 1.48 | 1.16 | 1.63 | 9.63 | |||||||||||||
1979 | 1.63 | 0.74 | 0.44 | 0.16 | 1.13 | 0.17 | 0.02 | 0.33 | 0.01 | 0.91 | 0.81 | 0.73 | 7.08 | |||||||||||||
1980 | 0.79 | 1.54 | 0.83 | 1.36 | 0.95 | 0.00 | 0.18 | 0.33 | 0.84 | 0.82 | 0.13 | 0.12 | 7.89 | |||||||||||||
1981 | 0.06 | 0.26 | 0.80 | 0.72 | 1.22 | 0.11 | 1.45 | 0.59 | 0.80 | 1.08 | 0.42 | 0.03 | 7.54 | |||||||||||||
1982 | 0.41 | 1.14 | 0.75 | 0.28 | 0.74 | 0.01 | 0.35 | 1.47 | 1.03 | 0.37 | a | 0.82 | 0.84 | 8.21 | ||||||||||||
1983 | 0.88 | 0.61 | 1.47 | 0.35 | 0.38 | 0.73 | 0.92 | 0.64 | 1.18 | 0.65 | 0.58 | 0.80 | 9.19 | |||||||||||||
1984 | 0.22 | 0.06 | 0.48 | 0.66 | 0.07 | 0.23 | 1.17 | 0.62 | 0.69 | 1.57 | 0.06 | 0.87 | 6.70 | |||||||||||||
1985 | 0.94 | 0.19 | 1.27 | 0.99 | 0.08 | 0.06 | 1.09 | 0.00 | 1.71 | 0.80 | 0.66 | 0.03 | 7.82 | |||||||||||||
1986 | 0.02 | 0.21 | 0.39 | 0.47 | 0.19 | 0.23 | 1.77 | 1.10 | 0.96 | 0.27 | 1.09 | 0.50 | 7.20 | |||||||||||||
1987 | 0.51 | 0.73 | 0.50 | 0.17 | 0.54 | 0.06 | 0.33 | 0.96 | 0.29 | 1.96 | 1.62 | 0.78 | 8.45 | |||||||||||||
1988 | 0.57 | 0.58 | 0.00 | 1.04 | 0.45 | 0.80 | 0.13 | 0.72 | 0.80 | 0.29 | 0.43 | 0.18 | 5.99 | |||||||||||||
1989 | 0.28 | 0.29 | 0.32 | 0.00 | 0.25 | 0.00 | 0.95 | 1.17 | 0.10 | 0.34 | 0.00 | 0.00 | 3.70 | |||||||||||||
1990 | 0.44 | 0.28 | 0.24 | 0.49 | 0.35 | 0.15 | 0.14 | 0.43 | 1.02 | 0.88 | 1.20 | 0.84 | 6.46 | |||||||||||||
1991 | 0.72 | 0.01 | 0.26 | 0.00 | 0.05 | 0.02 | 0.28 | 0.90 | 0.43 | 0.73 | 0.76 | 0.74 | 4.90 | |||||||||||||
1992 | 0.30 | 0.27 | 0.93 | 0.53 | 1.74 | 0.20 | 1.40 | 0.78 | 0.86 | 0.68 | 0.20 | 1.62 | 9.51 | |||||||||||||
1993 | 2.38 | 2.46 | 0.52 | 0.19 | 0.31 | 0.01 | 0.00 | 1.09 | 0.33 | 0.95 | 0.49 | 0.03 | 8.76 | |||||||||||||
1994 | 0.04 | 0.39 | 0.10 | 0.99 | 0.46 | 0.00 | 0.00 | 0.45 | 0.90 | 0.21 | 0.35 | 0.75 | 4.64 | |||||||||||||
1995 | 1.12 | 0.15 | 1.50 | 0.55 | 1.76 | 0.17 | 0.09 | 0.57 | 0.27 | 0.00 | 0.11 | 0.13 | 6.42 | |||||||||||||
1996 | 0.29 | 0.14 | 0.11 | 0.06 | 0.66 | 0.31 | 0.24 | 0.10 | 1.10 | 0.81 | 1.41 | 0.20 | 5.43 | |||||||||||||
1997 | 0.82 | 0.25 | 0.01 | 1.25 | 0.36 | 0.04 | 0.23 | 1.20 | 1.18 | 0.85 | 0.27 | 0.08 | 6.54 | |||||||||||||
1998 | 0.25 | 1.12 | 0.65 | 0.28 | 0.14 | 0.00 | 0.37 | 0.07 | 0.55 | 1.23 | 0.31 | 0.02 | 4.99 | |||||||||||||
1999 | 0.13 | 0.03 | 0.00 | 0.79 | 0.53 | 0.15 | 1.55 | 1.25 | 0.45 | 0.00 | 0.01 | 0.14 | 5.03 | |||||||||||||
2000 | 0.42 | 0.20 | 1.55 | 0.13 | 0.10 | 0.10 | 0.85 | 0.70 | 0.65 | 1.99 | 0.26 | 0.16 | 7.11 | |||||||||||||
2001 | 0.80 | 0.52 | 0.65 | 0.25 | 0.15 | 1.15 | 0.13 | 0.42 | 0.16 | 0.01 | 0.28 | 0.59 | 5.11 | |||||||||||||
2002 | 0.14 | 0.00 | 0.22 | 0.15 | 0.01 | 0.00 | 0.10 | 0.41 | 3.73 | 1.22 | 0.36 | 0.22 | 6.56 | |||||||||||||
2003 | 0.22 | 1.15 | 0.76 | 0.02 | 0.07 | 0.11 | 0.22 | 0.50 | 1.26 | 0.37 | 0.84 | 0.23 | 5.75 | |||||||||||||
2004 | 0.43 | 1.01 | 0.02 | 1.00 | f | 0.00 | 0.01 | 0.64 | 0.18 | 2.12 | 0.22 | 1.34 | 0.70 | 6.67 | a | |||||||||||
2005 | 1.60 | 2.03 | c | 0.38 | 0.44 | 0.13 | 0.45 | 0.64 | 2.80 | 2.25 | 0.65 | 0.10 | 0.03 | 11.50 | ||||||||||||
2006 | 0.48 | 0.10 | 1.00 | 0.02 | 0.11 | 0.15 | 0.87 | 0.33 | 0.14 | 2.11 | 0.08 | 0.36 | 5.75 | |||||||||||||
2007 | 0.30 | 0.65 | 0.24 | 0.36 | 0.91 | 0.20 | 1.18 | 1.76 | 0.36 | 0.34 | 0.63 | 0.67 | 7.60 | |||||||||||||
2008 | 1.19 | 1.31 | 0.00 | 0.10 | 0.37 | 0.06 | 0.02 | 0.25 | 0.16 | 0.60 | 0.76 | 1.11 | a | 5.93 | ||||||||||||
2009 | 0.30 | 0.15 | 0.00 | 0.26 | 1.63 | 0.68 | 0.10 | 0.11 | 0.23 | 0.31 | 0.31 | 1.72 | a | 5.80 | ||||||||||||
2010 | 1.64 | 1.16 | 0.88 | 0.08 | 0.78 | 0.18 | 0.60 | 2.20 | 1.11 | 1.07 | 0.07 | 0.79 | 10.56 | |||||||||||||
2011 | 0.00 | 0.13 | 0.07 | 0.43 | 0.20 | 0.02 | 1.36 | 0.15 | 0.84 | 0.53 | 0.28 | 0.69 | 4.70 | |||||||||||||
2012 | 0.47 | 0.34 | 0.10 | 0.05 | 0.00 | 0.00 | 0.63 | 0.95 | 0.43 | 0.35 | 0.00 | 0.45 | 3.77 | |||||||||||||
2013 | 1.15 | 0.12 | 0.25 | 0.06 | 0.40 | 0.00 | 0.93 | 0.63 | 1.59 | 0.12 | 1.31 | 0.17 | a | 6.73 | ||||||||||||
2014 | 0.00 | 0.28 | 0.10 | 0.10 | 0.29 | 0.00 | 0.21 | 1.01 | 1.23 | 0.34 | 0.11 | 0.41 | 4.08 | |||||||||||||
2015 | 0.82 | 3.55 | a | 0.49 | 0.15 | 0.48 | 1.52 | 2.24 | 1.12 | 0.12 | 2.43 | 0.63 | 0.31 | 13.86 | ||||||||||||
2016 | 2.70 | a | 0.47 | 0.19 | 0.43 | 0.32 | 0.02 | 0.41 | 1.30 | 0.71 | 0.05 | 0.55 | 0.92 | 8.07 | ||||||||||||
2017 | 1.49 | 0.37 | 0.05 | 0.26 | 0.45 | 0.00 | 0.27 | 0.20 | 0.64 | 0.00 | 0.00 | 0.00 | 3.73 | |||||||||||||
2018 | 0.10 | 0.10 | 0.34 | 0.25 | 0.22 | ----- | z | ----- | z | ----- | z | ----- | z | 0.64 | e | 0.00 | 0.51 | d | 2.16 | d | ||||||
2019 | 0.32 | h | 1.04 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.57 | 0.53 | 0.42 | 0.33 | 0.40 | 0.23 | 0.65 | 0.76 | 0.70 | 0.79 | 0.48 | 0.50 | 6.53 | |||||||||||||
S.D. | 0.60 | 0.60 | 0.42 | 0.33 | 0.43 | 0.35 | 0.57 | 0.66 | 0.65 | 0.89 | 0.40 | 0.46 | 2.16 | |||||||||||||
SKEW | 1.48 | 2.55 | 1.21 | 1.26 | 1.67 | 2.06 | 0.99 | 1.78 | 1.84 | 3.36 | 0.86 | 0.89 | 0.76 | |||||||||||||
MAX | 2.70 | 3.55 | 1.74 | 1.36 | 1.76 | 1.52 | 2.33 | 3.74 | 3.73 | 6.20 | 1.62 | 1.72 | 13.86 | |||||||||||||
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 | 2.63 | |||||||||||||
YRS | 72 | 72 | 73 | 72 | 73 | 72 | 70 | 71 | 72 | 71 | 71 | 71 | 65 |