YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1941 | 0.21 | 0.62 | 2.31 | 2.98 | 7.89 | 2.85 | 1.98 | 3.87 | 8.34 | 5.18 | 0.05 | ----- | z | 36.28 | a | |||||||||||
1942 | ----- | z | ----- | z | 0.95 | 3.30 | ----- | z | 3.50 | ----- | z | 3.78 | 2.56 | 3.11 | ----- | z | 0.82 | 18.02 | e | |||||||
1943 | ----- | z | ----- | z | ----- | z | 0.65 | 1.05 | 3.91 | 0.99 | 2.24 | ----- | z | ----- | z | ----- | z | 2.02 | 10.86 | f | ||||||
1944 | 0.82 | 0.70 | 0.52 | 3.07 | 2.83 | ----- | z | 4.89 | 3.43 | y | 1.21 | 0.40 | 0.67 | 1.69 | 16.80 | b | ||||||||||
1945 | 1.41 | 0.18 | 0.35 | 0.54 | 0.51 | 0.55 | 3.23 | 2.55 | 3.13 | 0.32 | 0.00 | 0.41 | 13.18 | |||||||||||||
1946 | 0.00 | 0.00 | 0.50 | 0.69 | 1.64 | 0.54 | 0.66 | 4.43 | 1.67 | 2.65 | 0.65 | 0.21 | 13.64 | |||||||||||||
1947 | ----- | z | 0.00 | 0.81 | 1.24 | 3.69 | 0.73 | 2.40 | 1.98 | 0.39 | 0.43 | 1.15 | 1.65 | 14.47 | a | |||||||||||
1948 | 1.62 | 1.53 | 1.25 | 0.64 | 3.99 | 5.21 | 2.62 | 1.55 | 0.00 | 1.04 | 0.12 | 0.00 | 19.57 | |||||||||||||
1949 | 0.85 | a | 1.70 | 0.85 | 3.61 | 1.97 | 4.15 | 2.09 | a | 2.81 | 2.66 | 0.10 | ----- | z | 0.45 | 21.24 | a | |||||||||
1950 | 0.00 | q | 0.13 | ----- | z | 0.85 | 0.35 | 3.06 | 3.79 | 1.63 | 2.87 | 0.70 | 0.00 | 0.00 | 13.38 | b | ||||||||||
1951 | 0.57 | 0.55 | 0.23 | 0.32 | 2.67 | 1.22 | 3.59 | 1.87 | 0.64 | 0.44 | 0.45 | 0.52 | 13.07 | |||||||||||||
1952 | 0.51 | 0.10 | 0.89 | 2.58 | 1.40 | 0.85 | 0.75 | 6.14 | 0.40 | 0.00 | 1.10 | 0.52 | 15.24 | |||||||||||||
1953 | 0.00 | 0.48 | 0.35 | 0.16 | 1.62 | 0.00 | 3.85 | 2.68 | 0.76 | 2.00 | 0.77 | 0.40 | 13.07 | |||||||||||||
1954 | 0.25 | 0.00 | 0.00 | 0.20 | 2.26 | 1.20 | 2.04 | 2.01 | 1.11 | 1.03 | 0.00 | 0.00 | 10.10 | |||||||||||||
1955 | 0.11 | 0.04 | 0.08 | 4.85 | 4.07 | 0.30 | 2.91 | 0.62 | 1.52 | 0.00 | 0.00 | 0.00 | 14.50 | |||||||||||||
1956 | 0.00 | 0.30 | 0.00 | 0.31 | 1.58 | 0.72 | 2.24 | 0.23 | 0.00 | 0.50 | 0.00 | 0.00 | 5.88 | |||||||||||||
1957 | 0.28 | 0.25 | 1.37 | c | 0.91 | 3.68 | 0.13 | 1.85 | 3.47 | 0.25 | 3.17 | 1.04 | 0.00 | 16.40 | ||||||||||||
1958 | 0.73 | 0.92 | 3.21 | 1.98 | 3.60 | 1.59 | 4.92 | 1.59 | 3.73 | 0.20 | 0.86 | 0.73 | 24.06 | |||||||||||||
1959 | 0.87 | 0.15 | 0.00 | 0.53 | 3.02 | 2.31 | 2.74 | 2.95 | 0.39 | 1.52 | 0.00 | 3.77 | 18.25 | |||||||||||||
1960 | 0.93 | 0.93 | 1.33 | 0.00 | 0.61 | 5.98 | 8.30 | 3.38 | 3.89 | 4.50 | 0.00 | 1.12 | a | 30.97 | ||||||||||||
1961 | 0.00 | 0.00 | 1.99 | 1.06 | 0.00 | 1.51 | 2.21 | 2.70 | 4.61 | 0.97 | 2.19 | 0.12 | 17.36 | |||||||||||||
1962 | 0.50 | 0.00 | 0.51 | 0.41 | 0.09 | 3.34 | 4.75 | 0.82 | 0.20 | 0.34 | 0.40 | 0.25 | 11.61 | |||||||||||||
1963 | 0.13 | 0.99 | 0.00 | 0.00 | 2.68 | 3.17 | 3.30 | 3.50 | 0.37 | 0.70 | 0.00 | 0.00 | 14.84 | |||||||||||||
1964 | 0.00 | 0.40 | 0.00 | 0.62 | 1.97 | 0.53 | 0.85 | 4.01 | 4.24 | 0.00 | 1.30 | 0.00 | 13.92 | |||||||||||||
1965 | 0.00 | 0.22 | 0.69 | 0.57 | 2.98 | 10.25 | 3.95 | 1.42 | 1.22 | 0.47 | 0.00 | 0.80 | 22.57 | |||||||||||||
1966 | 0.24 | 1.77 | 0.00 | 0.05 | 0.57 | 2.30 | 1.94 | 4.43 | 0.31 | 0.25 | 0.00 | 0.15 | 12.01 | |||||||||||||
1967 | 0.00 | 0.23 | 0.00 | 1.08 | 2.19 | 1.96 | 3.96 | 1.06 | 1.47 | 0.00 | 0.05 | 0.41 | 12.41 | |||||||||||||
1968 | 1.11 | 0.27 | 0.45 | 0.51 | 2.50 | 0.25 | 3.10 | 0.87 | 0.65 | 0.50 | 1.09 | 0.19 | 11.49 | |||||||||||||
1969 | 0.00 | 1.04 | 0.70 | 0.33 | 4.53 | 4.72 | 3.46 | 4.28 | 2.89 | 1.88 | 0.37 | 0.61 | 24.81 | |||||||||||||
1970 | 0.00 | 0.00 | 0.34 | 1.95 | 0.76 | 1.57 | 1.88 | 1.66 | 3.29 | 1.33 | 0.27 | 0.00 | 13.05 | |||||||||||||
1971 | 0.17 | 0.33 | 0.03 | 1.07 | 2.56 | 1.90 | 3.80 | 2.33 | 3.04 | 2.19 | 2.63 | 0.57 | 20.62 | |||||||||||||
1972 | 0.03 | 0.10 | 0.00 | 0.00 | 1.46 | 2.06 | 4.05 | 5.71 | 3.09 | 1.59 | 1.02 | 0.32 | 19.43 | |||||||||||||
1973 | 0.26 | 0.34 | ----- | z | 2.43 | 0.95 | 1.34 | 3.83 | ----- | z | 0.51 | 0.88 | 0.04 | 0.48 | 11.06 | b | ||||||||||
1974 | 0.28 | 0.18 | 0.73 | 0.46 | 0.55 | 0.66 | 0.98 | 8.02 | d | 1.46 | 2.57 | 0.15 | 0.39 | 16.43 | ||||||||||||
1975 | 0.62 | 0.55 | 0.26 | 1.04 | 1.06 | 5.51 | 2.05 | 0.57 | 1.36 | 0.00 | 0.00 | 0.07 | 13.09 | |||||||||||||
1976 | 0.10 | 0.00 | 0.33 | 0.70 | 2.54 | 2.34 | 1.36 | 1.96 | 5.41 | 0.31 | 0.17 | 0.00 | 15.22 | |||||||||||||
1977 | 0.35 | 0.16 | 0.31 | 2.12 | 2.03 | 0.73 | 2.01 | 3.86 | 2.60 | 0.04 | 0.14 | 0.00 | 14.35 | |||||||||||||
1978 | 0.41 | 0.83 | 0.32 | 0.38 | 3.00 | 1.59 | 1.79 | f | 3.16 | 0.40 | 0.18 | 3.63 | 0.10 | 14.00 | a | |||||||||||
1979 | 0.59 | 0.00 | 0.24 | e | 1.77 | 2.14 | 3.66 | 2.26 | 1.66 | d | 0.91 | 0.34 | 0.33 | 0.10 | 14.00 | |||||||||||
1980 | 0.30 | 0.51 | 0.37 | 2.74 | 2.91 | 0.89 | 0.33 | 3.04 | 0.86 | 0.53 | 0.93 | 0.00 | 13.41 | |||||||||||||
1981 | 0.02 | 0.16 | 1.44 | 0.96 | 1.64 | 2.67 | 2.90 | 9.21 | b | 4.42 | 1.22 | 0.29 | 0.00 | 24.93 | ||||||||||||
1982 | 0.00 | a | 0.23 | 0.18 | 0.15 | 1.17 | 3.24 | 8.32 | a | 3.41 | e | 2.92 | 0.03 | 0.27 | 0.91 | 20.83 | ||||||||||
1983 | 1.54 | 0.49 | 0.81 | 0.87 | 2.07 | a | 1.44 | 0.45 | f | 1.00 | i | 0.65 | 1.95 | 0.53 | j | 0.30 | m | 9.82 | d | |||||||
1984 | 0.35 | 0.11 | 1.77 | 2.04 | 1.50 | 2.50 | 1.99 | 5.25 | 0.37 | j | 4.64 | c | 0.40 | 0.95 | 21.50 | a | ||||||||||
1985 | 0.59 | 0.68 | 1.99 | 1.57 | 1.93 | 2.83 | 3.78 | 2.15 | j | 4.09 | 3.38 | 0.18 | 0.00 | 21.02 | a | |||||||||||
1986 | 0.00 | 1.00 | 0.05 | 0.76 | 2.99 | 1.96 | 1.21 | 1.52 | 0.87 | 1.66 | 3.59 | 0.88 | 16.49 | |||||||||||||
1987 | 1.16 | 1.78 | 0.51 | a | 0.51 | 5.11 | 2.29 | 0.29 | 4.45 | 1.95 | 0.15 | 0.20 | 0.92 | 19.32 | ||||||||||||
1988 | ----- | z | ----- | z | 1.06 | 0.67 | 3.39 | 4.95 | 2.82 | 2.91 | 3.92 | 0.36 | 0.03 | c | 0.27 | 20.38 | b | |||||||||
1989 | 0.66 | 0.42 | 0.14 | 0.03 | 3.59 | 5.33 | 1.25 | 5.40 | 1.80 | 0.18 | 0.00 | 0.16 | 18.96 | |||||||||||||
1990 | 0.00 | a | 1.27 | 0.70 | 0.22 | 1.50 | 0.00 | 1.50 | b | 4.13 | b | 3.02 | f | 0.65 | 0.75 | 0.27 | 10.99 | a | ||||||||
1991 | 0.89 | 0.00 | 1.20 | 0.00 | 5.74 | 3.38 | 4.72 | 3.26 | 4.83 | 0.51 | 1.13 | c | 1.78 | 27.44 | ||||||||||||
1992 | 0.84 | 0.31 | 0.23 | 0.75 | 3.45 | 3.46 | 3.85 | 3.85 | 0.28 | 0.15 | 0.50 | a | 0.55 | 18.22 | ||||||||||||
1993 | 0.80 | 0.65 | 1.15 | 0.20 | 1.74 | 7.00 | 1.20 | 1.69 | ----- | z | 1.18 | 0.18 | 0.07 | 15.86 | a | |||||||||||
1994 | 0.22 | 0.00 | 0.63 | 1.62 | 4.21 | 0.86 | 2.95 | 2.21 | 0.36 | 1.82 | 0.52 | 0.47 | 15.87 | |||||||||||||
1995 | 0.54 | 0.10 | 0.56 | 1.06 | 3.35 | 3.70 | 2.66 | 1.67 | 2.19 | 0.23 | 0.05 | 0.28 | 16.39 | |||||||||||||
1996 | 0.08 | 0.02 | 0.00 | 0.00 | 3.49 | 5.33 | 5.16 | 3.60 | 1.01 | 0.82 | 0.53 | 0.04 | a | 20.08 | ||||||||||||
1997 | 0.27 | 0.73 | 0.00 | 4.38 | b | 0.47 | 3.71 | 2.09 | 4.41 | 1.50 | 0.20 | 0.67 | 1.55 | 19.98 | ||||||||||||
1998 | 0.00 | 0.79 | 1.81 | 0.56 | 0.15 | 0.13 | 2.61 | 1.89 | 0.15 | 3.87 | 0.78 | 0.05 | 12.79 | |||||||||||||
1999 | 0.52 | 0.00 | 0.85 | 1.66 | 7.44 | 2.21 | 0.32 | 1.49 | 0.44 | 0.29 | 0.00 | 0.20 | 15.42 | |||||||||||||
2000 | 0.07 | 0.00 | 3.31 | 0.94 | 0.74 | 1.73 | 1.36 | 0.35 | 0.03 | 4.89 | 0.23 | a | 0.78 | 14.43 | ||||||||||||
2001 | 1.05 | 0.48 | 1.69 | 0.02 | 2.87 | 0.44 | 1.26 | 3.18 | 0.80 | 0.00 | 1.45 | 0.47 | 13.71 | |||||||||||||
2002 | 0.25 | 0.18 | 0.28 | 1.95 | 0.27 | 1.35 | 0.86 | 1.31 | 3.18 | 1.05 | b | 0.90 | 0.73 | 12.31 | ||||||||||||
2003 | 0.00 | 0.00 | 0.80 | 1.31 | a | 1.81 | 5.16 | 0.09 | 0.98 | 1.18 | 1.09 | 0.88 | 0.06 | 13.36 | ||||||||||||
2004 | 0.02 | 0.10 | 0.94 | a | 2.99 | 0.14 | 3.03 | 3.12 | 2.74 | 3.33 | 0.79 | 3.42 | 0.40 | 21.02 | ||||||||||||
2005 | 1.94 | 0.99 | 1.10 | a | 1.78 | 3.04 | 0.87 | 1.07 | 5.52 | 3.10 | 0.40 | 0.00 | a | 0.00 | 19.81 | |||||||||||
2006 | 0.02 | 0.00 | 1.69 | 0.28 | 1.41 | 1.70 | 2.00 | 3.08 | 1.83 | 1.16 | 0.00 | 0.33 | 13.50 | |||||||||||||
2007 | 0.35 | 0.09 | 1.69 | 0.35 | a | 2.95 | 3.27 | 1.05 | 2.06 | 1.11 | 0.25 | 0.17 | 0.66 | 14.00 | ||||||||||||
2008 | 0.00 | 0.29 | 0.08 | 0.17 | 3.02 | 0.72 | 3.26 | 7.73 | 0.56 | 6.42 | 0.15 | 0.34 | 22.74 | |||||||||||||
2009 | 0.00 | 0.47 | 0.65 | 0.85 | 1.12 | 1.17 | 3.81 | 2.85 | 1.01 | 2.21 | 0.07 | 0.14 | b | 14.35 | ||||||||||||
2010 | 1.34 | 1.00 | 1.09 | 0.85 | 1.20 | 1.78 | 2.63 | 3.26 | 0.80 | 1.09 | 0.00 | 0.30 | 15.34 | |||||||||||||
2011 | 0.00 | 0.29 | 0.43 | 0.12 | 0.00 | 0.06 | 0.88 | a | 1.81 | 2.18 | 0.93 | 0.15 | b | 2.08 | 8.93 | |||||||||||
2012 | 0.00 | 0.03 | a | 0.11 | a | 0.30 | 0.94 | a | 4.17 | a | 1.21 | 2.36 | 0.34 | 0.24 | 0.00 | 0.34 | b | 10.04 | ||||||||
2013 | 0.38 | 0.51 | 0.00 | 0.00 | 0.68 | 1.27 | 2.17 | 2.48 | 3.00 | 0.00 | 0.51 | 0.35 | 11.35 | |||||||||||||
2014 | 0.00 | 0.03 | 0.00 | 0.17 | 1.67 | 1.69 | 1.75 | 1.21 | 3.65 | 0.56 | 0.21 | 0.33 | 11.27 | |||||||||||||
2015 | 0.95 | 0.63 | 0.22 | 1.36 | 5.04 | 2.75 | 3.07 | 4.02 | 1.30 | 2.89 | 0.84 | 0.93 | 24.00 | |||||||||||||
2016 | 0.06 | 0.02 | 0.07 | 1.73 | 0.73 | 2.10 | 2.57 | 2.33 | 1.08 | 0.00 | 1.53 | 0.22 | 12.44 | |||||||||||||
2017 | 1.36 | 0.09 | 0.79 | 1.66 | 1.47 | 2.36 | 2.48 | 6.43 | 1.74 | 2.68 | 0.07 | 0.00 | 21.13 | |||||||||||||
2018 | 0.00 | 0.00 | 0.00 | 0.69 | 3.63 | 1.76 | 2.01 | 5.29 | 0.33 | 4.49 | 0.12 | 1.19 | 19.51 | |||||||||||||
2019 | 0.19 | 0.17 | 1.32 | 0.24 | 2.91 | 2.05 | 1.67 | 2.64 | 1.75 | 2.29 | 0.60 | 0.67 | 16.50 | |||||||||||||
2020 | 0.82 | 0.15 | 0.55 | 0.07 | 0.32 | 0.19 | 6.08 | 0.82 | 1.24 | b | 1.11 | 0.23 | 0.01 | 11.59 | ||||||||||||
2021 | 0.38 | 0.12 | 0.73 | 0.08 | 4.01 | 2.33 | 1.46 | 1.68 | 1.03 | 1.28 | 0.00 | 0.00 | 13.10 | |||||||||||||
2022 | 0.03 | 0.05 | 0.11 | 0.02 | 0.99 | 1.11 | 3.64 | 1.27 | 0.17 | h | 1.06 | 0.01 | 0.00 | 8.29 | a | |||||||||||
2023 | 0.35 | 0.05 | 0.32 | 0.36 | 4.71 | 2.77 | 2.86 | 0.69 | 0.56 | 0.25 | 0.11 | 1.30 | 14.33 | |||||||||||||
2024 | 0.23 | 0.48 | 0.00 | t | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.71 | j | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.41 | 0.39 | 0.69 | 1.02 | 2.27 | 2.34 | 2.60 | 2.93 | 1.81 | 1.25 | 0.55 | 0.49 | 16.18 | |||||||||||||
S.D. | 0.46 | 0.44 | 0.71 | 1.05 | 1.61 | 1.81 | 1.57 | 1.79 | 1.56 | 1.41 | 0.79 | 0.62 | 4.67 | |||||||||||||
SKEW | 1.23 | 1.48 | 1.52 | 1.51 | 1.00 | 1.42 | 1.25 | 1.14 | 1.36 | 1.61 | 2.42 | 2.48 | 0.78 | |||||||||||||
MAX | 1.94 | 1.78 | 3.31 | 4.85 | 7.89 | 10.25 | 8.32 | 9.21 | 8.34 | 6.42 | 3.63 | 3.77 | 30.97 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.09 | 0.23 | 0.00 | 0.00 | 0.00 | 0.00 | 5.88 | |||||||||||||
YRS | 79 | 81 | 80 | 83 | 82 | 82 | 80 | 79 | 78 | 82 | 79 | 81 | 67 |