YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 2.58 | 2.34 | 0.50 | 0.52 | 0.09 | 0.15 | 0.19 | 6.37 | e | |||||||
1939 | 1.79 | 0.00 | 0.03 | 0.05 | 0.14 | 0.40 | 1.66 | 2.98 | 0.17 | 2.39 | 0.56 | 0.53 | 10.70 | |||||||||||||
1940 | 0.47 | 0.26 | 0.09 | 1.08 | 3.25 | 3.77 | ----- | z | 1.32 | 0.12 | 6.93 | 0.77 | 0.34 | 18.40 | a | |||||||||||
1941 | 1.03 | 0.69 | 1.70 | 1.09 | 6.30 | 2.87 | 2.53 | 3.96 | 2.51 | 3.82 | 0.00 | 0.31 | 26.81 | |||||||||||||
1942 | 0.15 | 0.10 | 0.00 | 1.48 | 1.45 | 0.42 | 1.69 | 5.79 | 0.83 | 0.83 | 0.10 | 1.66 | 14.50 | |||||||||||||
1943 | 0.09 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.09 | k | |
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 | 0.26 | 0.36 | 0.02 | 0.17 | 1.36 | 0.94 | 2.38 | 2.46 | 0.04 | 0.95 | 0.00 | 0.28 | 9.22 | |||||||||||||
1949 | 3.09 | 0.32 | 0.06 | 1.69 | 0.27 | 1.97 | 0.52 | 2.13 | 1.59 | 2.03 | 0.00 | 0.35 | 14.02 | |||||||||||||
1950 | 0.13 | 0.25 | 0.01 | 0.28 | 0.24 | 1.82 | 1.10 | 1.89 | 1.49 | 0.83 | 0.00 | 0.01 | 8.05 | |||||||||||||
1951 | 0.03 | 0.09 | 1.40 | 0.20 | 0.86 | 0.13 | 0.53 | 0.85 | 0.10 | 0.11 | 0.00 | 0.02 | 4.32 | |||||||||||||
1952 | 0.10 | 0.49 | 0.14 | 3.46 | 0.90 | 1.19 | 4.09 | 1.42 | 1.53 | 0.00 | 1.08 | 0.10 | 14.50 | |||||||||||||
1953 | 0.00 | 0.02 | 0.29 | 0.28 | 0.21 | 0.01 | 0.52 | 0.39 | 0.01 | 4.05 | 0.00 | 0.15 | 5.93 | |||||||||||||
1954 | 0.07 | 0.03 | 0.06 | 4.05 | 0.99 | 0.80 | 0.00 | 0.32 | 0.00 | 3.76 | 0.00 | 0.00 | 10.08 | |||||||||||||
1955 | 0.61 | 0.00 | 0.00 | 0.12 | 1.99 | 0.58 | 2.80 | 0.00 | 1.38 | 0.30 | 0.54 | 0.00 | 8.32 | |||||||||||||
1956 | 0.07 | 0.24 | 0.00 | 0.07 | 0.31 | 0.07 | 0.35 | 0.03 | 0.11 | 0.34 | 0.02 | 0.15 | 1.76 | |||||||||||||
1957 | 0.62 | 1.36 | 0.00 | 0.18 | 1.76 | 0.33 | 1.31 | 0.16 | 0.34 | 2.27 | 0.60 | 0.05 | 8.98 | |||||||||||||
1958 | 2.06 | 1.21 | 0.74 | 0.91 | 0.88 | 1.58 | 2.03 | 3.75 | 3.23 | 1.58 | 0.32 | 0.00 | 18.29 | |||||||||||||
1959 | 0.01 | 0.20 | 0.47 | 1.03 | 2.30 | 0.31 | 2.38 | 0.39 | 0.71 | 1.75 | 0.81 | 0.79 | 11.15 | |||||||||||||
1960 | 0.77 | 0.46 | 0.04 | 0.24 | 2.97 | 0.46 | 4.65 | 3.06 | 0.09 | 2.37 | 0.00 | 1.42 | 16.53 | |||||||||||||
1961 | 0.71 | 0.00 | 0.52 | 0.00 | 1.18 | 1.34 | 3.39 | 0.09 | 0.70 | 0.18 | 0.94 | 0.27 | 9.32 | |||||||||||||
1962 | 0.51 | 0.00 | 0.25 | 1.46 | 1.52 | 1.33 | 1.68 | 0.65 | 2.92 | 1.11 | 0.12 | 0.53 | 12.08 | |||||||||||||
1963 | 0.01 | 0.49 | 0.00 | 0.76 | 2.82 | 3.45 | 0.69 | 1.45 | 0.81 | 0.05 | 0.25 | 0.17 | 10.95 | |||||||||||||
1964 | 0.08 | 0.02 | 0.54 | 0.00 | 0.84 | 1.11 | 0.58 | 0.94 | 5.45 | 0.58 | 0.01 | 0.42 | 10.57 | |||||||||||||
1965 | 0.02 | 1.10 | 0.02 | 0.04 | 1.33 | 2.09 | 0.67 | 1.73 | 0.29 | 0.00 | 0.16 | 0.33 | 7.78 | |||||||||||||
1966 | 0.17 | 0.08 | 0.26 | 1.43 | 1.21 | 2.98 | 0.48 | 2.08 | 0.82 | 0.68 | 0.00 | 0.00 | 10.19 | |||||||||||||
1967 | 0.00 | 0.00 | 0.00 | 0.11 | 0.22 | 1.29 | 0.65 | 0.45 | 0.74 | 0.10 | 0.57 | 0.43 | 4.56 | |||||||||||||
1968 | 0.86 | 0.56 | 1.48 | 0.54 | 0.46 | 0.03 | 1.38 | 2.86 | 1.28 | 0.67 | 2.37 | 0.23 | 12.72 | |||||||||||||
1969 | 0.00 | 0.39 | 0.29 | 2.51 | 0.67 | 1.26 | 2.07 | 1.52 | 1.21 | 2.16 | 0.61 | 0.12 | 12.81 | |||||||||||||
1970 | 0.00 | 0.72 | 2.14 | 0.21 | 0.29 | 1.85 | 0.31 | 0.54 | 2.66 | 1.26 | 0.00 | 0.17 | 10.15 | |||||||||||||
1971 | 0.00 | 0.00 | 0.00 | 0.11 | 0.26 | 1.64 | 2.69 | 1.45 | 3.71 | 0.36 | 0.01 | 0.13 | 10.36 | |||||||||||||
1972 | 0.11 | 0.00 | 0.00 | 0.00 | 1.69 | 3.90 | 1.34 | 2.49 | 0.37 | 1.74 | 0.16 | 0.02 | 11.82 | |||||||||||||
1973 | 0.59 | 1.38 | 1.03 | 0.44 | 0.40 | 0.01 | 4.63 | 0.15 | 1.30 | 1.26 | 0.03 | 0.00 | 11.22 | |||||||||||||
1974 | 1.13 | 0.14 | 0.12 | 1.20 | 0.91 | 1.13 | 0.26 | 3.06 | 8.38 | 5.62 | 0.40 | 0.30 | 22.65 | |||||||||||||
1975 | 1.33 | 0.54 | 0.12 | 0.00 | 0.65 | 1.07 | 4.54 | 2.23 | 2.25 | 0.16 | 0.25 | 0.56 | 13.70 | |||||||||||||
1976 | 0.01 | 0.02 | 0.11 | 0.51 | 0.45 | 1.96 | 1.66 | 1.60 | 1.83 | 1.12 | 0.53 | 0.11 | 9.91 | |||||||||||||
1977 | 0.35 | 0.40 | 0.39 | 1.10 | 1.48 | 2.03 | 0.19 | 0.27 | 0.06 | 1.80 | 0.00 | 0.25 | 8.32 | |||||||||||||
1978 | 0.05 | 0.45 | 0.11 | 0.12 | 0.26 | 2.05 | 1.22 | 0.48 | 5.12 | 2.34 | 2.29 | 0.11 | 14.60 | |||||||||||||
1979 | 0.08 | 0.19 | 0.04 | 0.38 | 0.80 | 4.85 | 0.94 | 2.04 | 0.51 | 0.07 | 0.00 | 1.37 | 11.27 | |||||||||||||
1980 | 0.51 | 0.13 | 0.00 | 0.64 | 0.90 | 1.94 | 0.01 | 0.82 | 9.07 | 0.34 | 0.80 | 0.38 | 15.54 | |||||||||||||
1981 | 0.69 | 0.77 | 0.17 | 4.77 | 1.20 | 0.06 | 2.16 | 1.74 | 2.60 | 4.97 | 0.00 | 0.00 | 19.13 | |||||||||||||
1982 | 0.07 | 0.06 | 0.00 | ----- | z | 1.19 | 0.56 | 1.57 | 0.58 | 0.63 | 0.40 | 1.54 | 1.55 | 8.15 | a | |||||||||||
1983 | 0.94 | 0.55 | 0.07 | 0.42 | 0.93 | 0.98 | 0.70 | 0.02 | 1.44 | 2.20 | 1.58 | 0.11 | 9.94 | |||||||||||||
1984 | 0.27 | 0.00 | 0.03 | 0.00 | 3.29 | 4.62 | 0.60 | 2.28 | 1.26 | 2.96 | 1.12 | 1.63 | 18.06 | |||||||||||||
1985 | 0.43 | 0.89 | 0.45 | 0.39 | 0.51 | 2.77 | 2.76 | 0.40 | 4.02 | f | 4.49 | 0.88 | i | 0.00 | 13.09 | b | ||||||||||
1986 | 0.36 | 0.25 | a | 0.00 | 0.22 | 1.22 | b | 4.09 | c | 2.88 | 3.31 | d | ----- | z | 4.75 | b | 1.67 | b | 3.07 | i | 18.75 | b | ||||
1987 | 0.12 | i | 1.67 | h | 0.75 | i | 0.53 | 0.47 | j | 4.78 | a | 1.76 | 1.07 | d | 0.81 | d | 1.80 | b | 0.07 | 0.12 | a | 10.94 | d | |||
1988 | 0.00 | o | 0.05 | 0.60 | 0.41 | 1.09 | 0.06 | 5.84 | 0.82 | 0.57 | 0.00 | 0.04 | 0.21 | 9.69 | a | |||||||||||
1989 | 0.08 | 1.50 | 0.11 | 0.00 | 0.27 | 2.14 | 0.08 | 1.66 | 1.74 | 0.00 | 0.00 | 0.07 | 7.65 | |||||||||||||
1990 | 0.12 | 0.45 | 3.00 | 1.04 | 0.05 | 0.00 | 3.57 | 1.89 | 3.59 | 1.39 | 0.58 | 0.32 | 16.00 | |||||||||||||
1991 | 1.44 | 0.31 | 0.00 | 0.10 | 0.52 | 0.11 | 5.87 | 1.03 | 3.68 | 0.03 | 0.64 | 2.56 | 16.29 | |||||||||||||
1992 | 1.23 | 1.46 | 0.31 | 0.16 | 8.67 | 1.02 | 1.59 | 0.18 | 0.60 | 0.00 | 0.92 | 0.27 | 16.41 | |||||||||||||
1993 | 0.54 | 0.76 | 0.65 | 0.19 | 0.63 | 1.07 | 4.62 | 1.16 | 0.30 | 0.50 | 0.02 | 0.18 | 10.62 | |||||||||||||
1994 | 0.39 | 0.23 | 0.00 | 0.94 | 4.26 | 0.32 | 0.67 | 1.43 | 1.20 | 0.47 | 0.53 | 0.43 | 10.87 | |||||||||||||
1995 | 0.49 | 0.62 | 0.12 | 0.37 | 4.99 | 3.25 | 0.11 | 0.28 | 3.51 | 0.53 | 0.00 | 0.69 | 14.96 | |||||||||||||
1996 | 0.23 | 0.00 | 0.22 | 0.79 | 0.18 | 3.53 | 1.12 | 1.42 | 0.62 | 0.08 | 0.60 | 0.00 | 8.79 | |||||||||||||
1997 | 0.28 | 0.81 | 0.03 | 0.54 | 0.96 | 0.52 | 2.13 | 1.46 | 1.55 | 0.87 | 0.33 | 1.56 | 11.04 | |||||||||||||
1998 | 0.08 | 0.47 | 0.46 | 0.00 | 0.01 | 0.17 | 1.40 | 2.95 | 0.47 | 3.07 | 0.08 | 0.74 | 9.90 | |||||||||||||
1999 | 0.15 | 0.00 | 0.51 | 0.18 | 1.86 | 4.07 | 1.61 | 0.36 | 0.60 | 0.08 | 0.00 | 0.09 | 9.51 | |||||||||||||
2000 | 0.21 | 0.21 | 0.23 | 0.05 | 0.09 | 0.85 | 0.07 | 0.10 | 0.00 | 1.80 | 1.34 | 0.31 | 5.26 | |||||||||||||
2001 | 1.03 | 0.17 | 0.98 | 0.68 | 0.27 | 0.08 | 0.17 | 0.77 | 0.19 | 0.27 | 0.73 | 0.16 | 5.50 | |||||||||||||
2002 | 0.24 | 0.97 | 0.46 | 0.36 | 0.07 | 1.75 | 1.94 | 0.26 | 1.00 | 4.46 | 0.66 | 0.73 | 12.90 | |||||||||||||
2003 | 0.17 | 0.67 | 0.36 | 0.02 | 0.34 | 3.40 | 0.47 | 1.80 | 0.13 | 0.88 | 0.28 | 0.00 | 8.52 | |||||||||||||
2004 | 0.81 | 0.75 | 2.54 | 2.16 | 0.07 | 0.67 | 2.50 | 2.28 | 3.14 | 3.19 | 4.32 | 0.24 | 22.67 | |||||||||||||
2005 | 0.27 | 1.67 | 1.47 | 0.80 | 3.86 | 0.91 | 4.17 | 3.11 | 0.05 | 3.89 | 0.00 | 0.07 | 20.27 | |||||||||||||
2006 | 0.03 | 0.79 | 1.46 | 0.36 | 0.00 | 0.63 | 0.47 | 6.62 | 1.72 | 2.33 | 0.00 | 0.89 | 15.30 | |||||||||||||
2007 | 1.07 | 0.07 | 5.58 | 1.04 | 3.87 | 1.64 | 3.09 | 3.22 | 1.07 | 0.16 | 0.84 | 0.23 | 21.88 | |||||||||||||
2008 | 0.01 | 0.00 | 0.75 | 0.00 | 0.37 | 1.85 | 1.58 | 1.27 | 3.66 | 2.04 | 0.02 | 0.00 | 11.55 | |||||||||||||
2009 | 0.00 | 0.09 | 0.00 | 0.12 | 1.29 | 1.26 | 1.84 | 0.07 | 0.34 | 0.45 | 0.19 | 0.33 | 5.98 | |||||||||||||
2010 | 0.92 | 1.04 | 0.24 | 0.16 | 0.11 | 1.07 | 2.32 | 1.59 | 0.38 | 0.00 | 0.00 | 0.01 | 7.84 | |||||||||||||
2011 | 0.04 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.02 | 0.23 | 0.64 | 0.05 | 0.00 | 0.96 | 1.94 | |||||||||||||
2012 | 0.79 | 0.05 | 0.19 | 0.19 | 3.20 | 0.00 | 1.05 | 0.70 | 2.91 | 0.39 | 0.00 | 0.02 | 9.49 | |||||||||||||
2013 | 1.20 | 0.05 | 0.00 | 0.00 | 0.02 | 0.55 | 1.36 | 0.07 | 2.65 | 0.14 | 0.28 | 1.45 | 7.77 | |||||||||||||
2014 | 0.00 | 0.10 | 0.02 | 0.45 | 0.43 | 0.47 | 0.23 | 0.29 | 4.94 | 0.37 | 0.94 | 0.38 | 8.62 | |||||||||||||
2015 | 1.38 | 0.32 | 1.44 | 0.04 | 2.01 | 0.43 | 0.03 | 1.14 | 2.12 | 5.04 | 0.03 | 0.38 | 14.36 | |||||||||||||
2016 | 0.11 | 0.08 | 0.08 | 0.98 | 2.05 | 3.90 | 0.23 | 0.61 | 0.85 | 0.00 | 0.00 | 0.84 | 9.73 | |||||||||||||
2017 | 1.03 | 0.01 | 0.36 | a | 0.19 | 0.06 | 0.10 | 1.21 | 4.59 | 3.04 | 0.05 | 0.24 | 0.47 | 11.35 | ||||||||||||
2018 | 0.00 | 0.02 | 0.25 | 0.00 | 0.13 | 0.52 | a | 0.00 | a | 0.17 | a | 2.94 | 4.29 | 0.05 | 0.57 | 8.94 | ||||||||||
2019 | 0.08 | 0.14 | 0.88 | 3.25 | 1.21 | 0.20 | 0.00 | a | 0.30 | 0.46 | a | 0.03 | 1.46 | 0.27 | 8.28 | |||||||||||
2020 | 0.56 | 0.18 | 1.84 | 0.00 | 0.51 | 0.94 | 0.49 | 0.02 | 0.17 | a | 0.00 | 0.03 | 0.33 | 5.07 | ||||||||||||
2021 | 0.24 | 0.03 | 0.01 | 0.00 | b | 1.95 | 0.34 | a | 0.63 | 1.03 | b | 0.26 | 0.00 | 0.00 | 0.03 | 4.52 | ||||||||||
2022 | 0.00 | 0.00 | 0.03 | 0.00 | 0.04 | a | 2.82 | 0.01 | 2.76 | 1.63 | 1.02 | 1.37 | a | 0.12 | 9.80 | |||||||||||
2023 | 0.26 | 0.02 | 0.00 | 0.00 | 0.26 | 0.23 | 0.00 | d | 0.04 | 0.41 | 0.92 | a | 0.41 | 0.01 | 2.56 | |||||||||||
2024 | 0.30 | 0.31 | 0.31 | 0.00 | k | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.92 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.46 | 0.37 | 0.48 | 0.63 | 1.25 | 1.44 | 1.56 | 1.42 | 1.57 | 1.44 | 0.47 | 0.39 | 11.26 | |||||||||||||
S.D. | 0.55 | 0.42 | 0.85 | 0.93 | 1.51 | 1.32 | 1.44 | 1.34 | 1.76 | 1.63 | 0.70 | 0.49 | 4.92 | |||||||||||||
SKEW | 2.04 | 1.32 | 3.48 | 2.55 | 2.44 | 0.97 | 1.13 | 1.44 | 2.08 | 1.29 | 2.78 | 2.08 | 0.71 | |||||||||||||
MAX | 3.09 | 1.67 | 5.58 | 4.77 | 8.67 | 4.85 | 5.87 | 6.62 | 9.07 | 6.93 | 4.32 | 2.56 | 26.81 | |||||||||||||
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 | 1.76 | |||||||||||||
YRS | 80 | 80 | 80 | 79 | 79 | 81 | 80 | 81 | 79 | 81 | 80 | 80 | 74 |