YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.76 | 0.99 | 0.13 | ----- | z | ----- | z | 2.88 | i | |||
1939 | 0.95 | b | 0.28 | 0.84 | x | ----- | z | 0.00 | 0.00 | ----- | z | ----- | z | 2.77 | 0.24 | ----- | z | ----- | z | 4.24 | f | |||||
1940 | ----- | z | ----- | z | ----- | z | 0.21 | 0.19 | ----- | z | 0.16 | 0.79 | 2.55 | 0.96 | 1.14 | 0.79 | 6.79 | d | ||||||||
1941 | 0.20 | 0.35 | ----- | z | 1.78 | 1.60 | 1.18 | 1.27 | 0.91 | 0.41 | 3.96 | a | 0.51 | 0.46 | 12.63 | a | ||||||||||
1942 | 0.03 | 0.48 | a | 0.45 | b | 1.14 | 0.00 | 0.00 | 0.70 | 0.39 | 0.59 | 0.82 | 0.17 | 0.00 | 4.77 | |||||||||||
1943 | 0.08 | ----- | z | 0.39 | 0.40 | 0.12 | 0.40 | 0.27 | 1.66 | 1.61 | 0.86 | 0.93 | 1.74 | 8.46 | a | |||||||||||
1944 | 0.65 | a | 0.81 | a | 0.73 | 0.99 | 0.09 | 1.26 | 1.86 | 0.69 | 0.00 | 0.95 | 0.15 | 0.25 | 8.43 | |||||||||||
1945 | 1.09 | 0.61 | 0.86 | 0.29 | 0.00 | 0.50 | 0.34 | 1.69 | 0.45 | 2.05 | 0.20 | 0.12 | d | 8.20 | ||||||||||||
1946 | ----- | z | 0.00 | 0.57 | 0.18 | 0.78 | 0.00 | 0.38 | 1.95 | 0.00 | 1.90 | 1.47 | x | ----- | z | 5.76 | c | |||||||||
1947 | 0.00 | 0.00 | 0.00 | 0.26 | 1.28 | 1.04 | 0.33 | 0.91 | x | 0.11 | 1.76 | ----- | z | ----- | z | 4.78 | c | |||||||||
1948 | 0.03 | 1.02 | 0.24 | 0.71 | 0.00 | 0.40 | w | 0.48 | 1.54 | 0.14 | 1.25 | 0.00 | 0.45 | 5.86 | a | |||||||||||
1949 | 2.00 | 0.00 | 1.94 | 1.07 | 0.60 | 1.40 | 0.57 | c | 0.40 | 0.61 | 0.60 | 0.00 | 0.29 | 9.48 | ||||||||||||
1950 | 0.02 | 0.10 | 0.12 | 0.00 | 0.12 | 0.00 | 3.13 | 0.27 | 0.00 | 0.00 | 0.00 | 0.15 | 3.91 | |||||||||||||
1951 | 0.33 | 0.00 | 0.00 | 0.36 | 2.01 | 0.10 | 1.68 | 4.42 | 0.22 | 1.33 | 1.19 | 0.15 | 11.79 | |||||||||||||
1952 | 0.52 | 0.00 | 0.08 | 0.00 | 0.62 | 2.03 | 0.53 | 1.03 | 0.63 | 0.00 | 0.05 | 0.69 | 6.18 | |||||||||||||
1953 | 0.00 | 0.00 | 0.46 | 0.15 | 0.45 | 0.00 | 1.65 | 0.71 | 0.00 | 1.21 | 0.26 | 0.00 | 4.89 | |||||||||||||
1954 | 0.22 | 0.00 | 0.73 | 0.00 | 0.45 | 0.16 | 0.44 | 0.07 | 0.96 | 0.18 | ----- | z | 0.25 | 3.46 | a | |||||||||||
1955 | 1.00 | 0.55 | 0.00 | 0.00 | 0.00 | 0.25 | 0.31 | 2.86 | 0.05 | 0.00 | 0.15 | 0.05 | 5.22 | |||||||||||||
1956 | 0.00 | 0.00 | 0.00 | 0.21 | 0.55 | 0.20 | 1.35 | 0.62 | 0.18 | 0.79 | 0.18 | 0.00 | 4.08 | |||||||||||||
1957 | 0.11 | 0.00 | 0.00 | 1.52 | 1.54 | 0.21 | 2.00 | 2.34 | 0.00 | 3.33 | 2.66 | 0.07 | 13.78 | |||||||||||||
1958 | 0.73 | 0.00 | 0.86 | 0.00 | 0.46 | 0.14 | 0.17 | 0.44 | 0.93 | 0.49 | 0.61 | 0.00 | 4.83 | |||||||||||||
1959 | 0.00 | 0.30 | 0.02 | 0.26 | 0.08 | 0.79 | 0.46 | 0.73 | 0.41 | 0.49 | 0.33 | 0.99 | 4.86 | |||||||||||||
1960 | 0.19 | 0.38 | 0.21 | 0.10 | 0.43 | 0.89 | 0.56 | 0.04 | 1.13 | 1.96 | 0.87 | 0.15 | 6.91 | |||||||||||||
1961 | 0.00 | 0.06 | 0.36 | 0.61 | 0.60 | 0.00 | 0.38 | 2.81 | 2.33 | 1.73 | 0.00 | 0.25 | 9.13 | |||||||||||||
1962 | 0.07 | 0.50 | 0.22 | 0.16 | 0.27 | 0.43 | 0.33 | 0.29 | 1.23 | 1.15 | 0.04 | 0.28 | 4.97 | |||||||||||||
1963 | 0.14 | 0.09 | 0.26 | 0.35 | 0.04 | 0.67 | 0.50 | 1.14 | 1.68 | 0.33 | 0.27 | 0.00 | 5.47 | |||||||||||||
1964 | 0.04 | 0.00 | 0.82 | 1.72 | 1.00 | 0.26 | 1.13 | 0.63 | 0.75 | 0.00 | 0.60 | 0.44 | 7.39 | |||||||||||||
1965 | 0.14 | 0.18 | 0.48 | 2.84 | 2.23 | 0.93 | 2.15 | 1.23 | 0.86 | 0.35 | 0.16 | 1.49 | 13.04 | |||||||||||||
1966 | 0.02 | 0.27 | 0.00 | 0.37 | 0.21 | 0.22 | 1.07 | 0.78 | 0.54 | 0.50 | 0.01 | 0.51 | 4.50 | |||||||||||||
1967 | 0.00 | 0.03 | 0.03 | m | 0.05 | 1.58 | 0.54 | 1.04 | 0.83 | 1.28 | 0.02 | 0.27 | 1.27 | l | 5.64 | b | ||||||||||
1968 | 0.02 | 0.10 | 0.13 | 0.73 | 0.57 | 0.15 | 1.49 | 0.78 | 0.24 | 0.09 | 0.13 | 0.08 | 4.51 | |||||||||||||
1969 | 0.17 | 0.71 | 1.12 | 0.01 | 0.12 | 2.29 | 0.80 | 1.45 | 1.10 | 1.05 | 0.09 | 0.16 | 9.07 | |||||||||||||
1970 | 0.04 | 0.15 | 0.58 | 0.68 | 0.15 | 0.31 | 1.52 | 1.63 | 0.48 | 0.55 | 0.44 | 0.00 | 6.53 | |||||||||||||
1971 | 0.18 | 0.91 | 0.00 | 0.10 | 0.79 | 0.06 | 0.67 | 1.46 | 0.06 | 1.73 | 0.30 | 0.45 | 6.71 | |||||||||||||
1972 | 0.00 | 0.00 | 0.00 | 0.20 | 0.01 | 0.42 | 0.58 | 1.53 | 0.46 | 2.90 | 2.54 | 0.06 | 8.70 | |||||||||||||
1973 | 0.17 | 0.05 | 0.90 | 0.36 | 0.56 | 0.24 | 0.49 | 0.59 | 0.03 | 0.13 | 0.20 | 0.00 | 3.72 | |||||||||||||
1974 | 0.74 | 0.00 | 0.38 | 0.25 | 0.00 | 0.00 | 1.00 | 0.18 | 0.79 | 1.05 | 1.40 | 0.08 | 5.87 | |||||||||||||
1975 | 0.03 | 1.13 | 0.35 | 1.51 | 0.32 | 0.49 | 0.74 | 0.14 | 0.97 | 0.85 | 0.29 | 0.03 | 6.85 | |||||||||||||
1976 | 0.00 | 0.49 | 0.12 | 0.73 | 1.43 | 0.05 | 0.81 | 0.35 | 0.52 | 0.32 | 0.00 | 0.00 | 4.82 | |||||||||||||
1977 | 0.11 | 0.14 | 0.24 | 0.00 | 0.18 | 0.13 | 1.13 | 0.89 | 0.38 | 0.38 | 0.53 | 0.14 | 4.25 | |||||||||||||
1978 | 0.43 | 0.46 | 0.22 | 0.49 | 1.09 | 0.00 | 1.98 | 0.09 | 0.88 | 0.81 | 2.84 | 0.34 | 9.63 | |||||||||||||
1979 | 1.36 | 0.12 | 1.19 | 0.09 | 1.77 | 0.02 | 0.09 | 0.65 | 0.00 | 0.00 | 0.59 | 0.67 | 6.55 | |||||||||||||
1980 | 1.76 | 0.29 | 1.49 | 0.53 | 0.91 | 0.03 | 0.61 | 1.53 | 3.00 | 0.51 | 0.16 | 0.00 | 10.82 | |||||||||||||
1981 | 0.00 | 0.17 | 2.25 | 0.21 | 0.39 | 0.34 | 1.52 | 1.22 | 1.86 | 1.00 | 0.81 | 0.10 | 9.87 | |||||||||||||
1982 | 1.60 | 0.14 | 0.14 | 0.03 | 0.26 | 0.99 | 0.37 | 3.28 | 0.97 | 0.01 | 0.66 | 0.39 | 8.84 | |||||||||||||
1983 | 0.57 | 0.04 | 1.76 | 0.23 | 0.47 | 0.58 | 0.66 | 1.31 | 0.49 | 0.25 | 0.31 | 0.27 | 6.94 | |||||||||||||
1984 | 0.08 | 0.03 | 0.79 | 0.00 | 0.85 | 1.52 | 1.78 | 2.80 | 0.30 | 1.14 | 0.13 | 0.39 | 9.81 | |||||||||||||
1985 | 0.03 | 0.20 | 1.24 | 1.37 | 1.02 | 0.15 | 2.81 | 0.09 | 1.04 | 1.01 | 0.81 | 0.06 | 9.83 | |||||||||||||
1986 | 0.01 | 1.00 | 0.18 | 0.77 | 0.53 | 0.03 | 1.39 | 2.13 | 0.59 | 1.39 | 0.70 | 1.42 | 10.14 | |||||||||||||
1987 | 0.63 | 0.43 | 1.17 | 0.48 | 1.06 | 0.46 | 2.44 | 1.05 | 0.66 | 1.20 | 1.15 | 0.08 | 10.81 | |||||||||||||
1988 | 0.82 | 0.08 | 0.59 | 0.88 | 0.29 | 0.95 | 0.14 | 0.69 | 0.59 | 0.23 | 0.04 | 0.15 | 5.45 | |||||||||||||
1989 | 0.21 | 0.71 | 0.13 | 0.05 | 1.08 | 0.40 | 0.62 | 1.53 | 0.10 | 0.04 | 0.01 | 0.00 | a | 4.88 | ||||||||||||
1990 | 0.29 | 0.72 | 0.81 | 0.69 | 0.17 | 0.06 | 1.30 | 1.00 | 0.93 | 0.22 | 0.06 | 0.06 | 6.31 | |||||||||||||
1991 | 0.11 | a | 0.07 | 0.88 | 0.32 | 0.80 | 0.76 | 0.54 | 1.59 | 1.45 | 0.32 | 1.72 | 0.39 | 8.95 | ||||||||||||
1992 | 0.73 | 0.47 | 1.41 | 0.60 | 2.08 | 0.57 | 0.85 | 0.63 | 0.07 | 0.62 | 0.05 | 0.41 | a | 8.49 | ||||||||||||
1993 | 2.32 | 2.13 | 0.41 | 0.25 | 1.01 | 0.19 | 0.11 | 1.15 | 0.25 | 1.01 | 0.28 | 0.04 | 9.15 | |||||||||||||
1994 | 0.48 | 0.09 | 0.00 | 0.72 | 0.12 | 0.01 | 0.43 | 2.12 | 0.60 | 0.41 | 0.80 | 1.04 | 6.82 | |||||||||||||
1995 | 1.18 | 0.30 | 1.36 | 1.44 | 0.76 | 0.66 | 0.33 | 0.72 | 0.44 | 0.00 | 0.18 | 0.25 | 7.62 | |||||||||||||
1996 | 0.33 | d | 0.15 | c | 0.20 | a | ----- | z | 0.52 | 0.55 | a | 0.31 | x | 0.35 | a | 0.77 | 0.72 | 1.28 | ----- | z | 4.87 | c | ||||
1997 | 1.29 | 0.00 | c | 0.20 | 2.07 | 0.32 | 0.29 | 1.85 | 1.93 | 3.21 | 0.06 | a | 0.29 | 0.11 | 11.62 | |||||||||||
1998 | 0.00 | 0.84 | 0.13 | 0.32 | 0.14 | 0.35 | 1.86 | 0.45 | 2.45 | 1.57 | 0.24 | 0.39 | 8.74 | |||||||||||||
1999 | 0.08 | 0.10 | 0.00 | 0.90 | 0.01 | 0.62 | 0.88 | 3.12 | 0.35 | 0.00 | 0.00 | 0.34 | 6.40 | |||||||||||||
2000 | 0.08 | 0.23 | 0.81 | 0.00 | 0.24 | 0.18 | 0.12 | 1.09 | 0.68 | 2.94 | 0.11 | 0.10 | 6.58 | |||||||||||||
2001 | 1.99 | 1.08 | 0.51 | 0.24 | 1.54 | a | 0.51 | 0.70 | 0.67 | 0.01 | 0.12 | 0.63 | 0.16 | 8.16 | ||||||||||||
2002 | 0.14 | b | 0.09 | 0.00 | 0.10 | 0.00 | 0.23 | 0.40 | 0.30 | 1.83 | 0.98 | 0.52 | 0.15 | 4.74 | ||||||||||||
2003 | 0.13 | 0.78 | 0.82 | 0.19 | 0.35 | 0.01 | 0.00 | 1.65 | a | 0.25 | 0.76 | 0.78 | 0.56 | k | 5.72 | a | ||||||||||
2004 | 0.00 | c | 0.71 | 0.06 | 2.32 | 0.25 | 0.43 | 0.25 | 0.78 | 0.37 | a | 0.71 | 2.66 | 0.80 | 9.34 | |||||||||||
2005 | 1.57 | d | 1.32 | a | 0.24 | c | 0.73 | 0.95 | 1.27 | 0.73 | 1.15 | 0.76 | 1.31 | 0.12 | 0.15 | 10.30 | ||||||||||
2006 | 0.18 | a | 0.06 | 1.32 | a | 0.27 | 0.40 | 0.27 | 1.15 | 1.38 | 0.58 | 5.22 | 0.01 | e | 0.52 | 11.36 | ||||||||||
2007 | 0.01 | a | 0.05 | a | 0.74 | 0.59 | a | 0.07 | 0.08 | 0.63 | 1.69 | 0.76 | 0.05 | 0.09 | 0.64 | 5.40 | ||||||||||
2008 | 0.36 | 0.07 | a | 0.49 | 0.01 | 0.46 | 0.01 | 0.31 | 0.57 | 0.04 | 0.37 | 0.59 | 0.45 | a | 3.73 | |||||||||||
2009 | 0.08 | a | 0.03 | 0.00 | 0.32 | 1.13 | 0.69 | 0.79 | 0.46 | 0.70 | a | 0.45 | 0.00 | a | 0.22 | 4.87 | ||||||||||
2010 | 1.20 | 2.92 | a | 1.05 | 0.14 | 0.12 | 0.25 | 0.91 | 3.20 | 0.04 | 2.54 | 0.25 | a | 0.28 | 12.90 | |||||||||||
2011 | 0.01 | 0.84 | w | ----- | z | 0.65 | 0.81 | q | 0.10 | 3.54 | 1.37 | 1.31 | 0.71 | 0.23 | f | 0.62 | 8.31 | d | ||||||||
2012 | 0.07 | a | 0.14 | 0.11 | 0.00 | 0.24 | 0.03 | 1.28 | 1.42 | 0.76 | 0.90 | 0.00 | 0.26 | 5.21 | ||||||||||||
2013 | 0.13 | 0.60 | 0.73 | a | 0.48 | 0.54 | 0.06 | 2.55 | 0.66 | 5.18 | 0.11 | 1.22 | 0.07 | 12.33 | ||||||||||||
2014 | 0.19 | 0.03 | 0.06 | 0.18 | 1.23 | 0.05 | 1.13 | 1.22 | 1.87 | 0.00 | 0.31 | 0.40 | 6.67 | |||||||||||||
2015 | 1.32 | 0.72 | 0.75 | 0.15 | 0.85 | 1.39 | 2.46 | 2.02 | 0.89 | a | 0.87 | 0.00 | 0.54 | 11.96 | ||||||||||||
2016 | 0.09 | 0.54 | 0.11 | 1.06 | 0.61 | 0.24 | 1.93 | 0.80 | 1.69 | 0.21 | 0.38 | a | 0.12 | 7.78 | ||||||||||||
2017 | 0.77 | 0.09 | 0.20 | 0.80 | 0.60 | 0.27 | b | 1.68 | b | 0.30 | 1.61 | 0.07 | 0.07 | a | 0.01 | 6.47 | ||||||||||
2018 | 0.06 | c | 0.20 | a | 0.06 | 0.05 | 0.94 | 0.01 | 0.75 | 0.88 | 0.07 | 2.54 | 0.10 | 0.43 | d | 6.09 | ||||||||||
2019 | 0.33 | 0.77 | 1.06 | 0.18 | 1.85 | 0.22 | 0.90 | 0.63 | 0.02 | 0.00 | 2.30 | 0.58 | a | 8.84 | ||||||||||||
2020 | 0.28 | a | 0.67 | 0.72 | 0.23 | 0.05 | a | 0.14 | 2.06 | 0.00 | 0.09 | 0.00 | 0.15 | a | 0.29 | 4.68 | ||||||||||
2021 | 0.65 | 0.10 | 1.64 | 0.57 | 0.05 | 0.24 | 3.37 | 1.45 | 1.78 | 0.70 | 0.00 | 0.27 | 10.82 | |||||||||||||
2022 | 0.09 | 0.34 | 0.15 | 0.04 | 0.00 | 0.51 | 0.89 | 0.67 | 1.16 | 0.27 | 0.05 | 0.21 | 4.38 | |||||||||||||
2023 | 0.50 | 0.22 | 1.44 | 0.15 | 1.23 | 0.61 | 1.59 | 1.50 | 1.30 | 0.13 | 0.30 | 0.11 | 9.08 | |||||||||||||
2024 | 0.50 | 1.19 | 2.40 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 4.09 | i | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.42 | 0.38 | 0.56 | 0.51 | 0.60 | 0.42 | 1.05 | 1.16 | 0.85 | 0.85 | 0.51 | 0.31 | 7.56 | |||||||||||||
S.D. | 0.55 | 0.49 | 0.56 | 0.57 | 0.56 | 0.47 | 0.80 | 0.85 | 0.88 | 0.95 | 0.67 | 0.34 | 2.61 | |||||||||||||
SKEW | 1.65 | 2.56 | 1.19 | 1.83 | 1.02 | 1.75 | 1.12 | 1.27 | 2.06 | 2.05 | 2.06 | 2.03 | 0.44 | |||||||||||||
MAX | 2.32 | 2.92 | 2.40 | 2.84 | 2.23 | 2.29 | 3.54 | 4.42 | 5.18 | 5.22 | 2.84 | 1.74 | 13.78 | |||||||||||||
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 | 3.72 | |||||||||||||
YRS | 84 | 83 | 81 | 83 | 84 | 83 | 83 | 84 | 86 | 86 | 80 | 79 | 73 |