YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1957 | ----- | z | ----- | z | 1.51 | e | 1.12 | a | 2.59 | 0.44 | 0.33 | 0.10 | 1.41 | 1.45 | 0.98 | 2.17 | 12.10 | b | ||||||||
1958 | 1.70 | 1.53 | 0.81 | 0.90 | 1.41 | 2.33 | 1.20 | 0.15 | 0.61 | 0.30 | 1.15 | a | 0.85 | 12.94 | ||||||||||||
1959 | 1.36 | 0.97 | 0.70 | 0.11 | 1.37 | 0.68 | 0.06 | 1.02 | 0.73 | 0.80 | 0.05 | 0.29 | 8.14 | |||||||||||||
1960 | 1.39 | 1.67 | 1.52 | 1.30 | 2.17 | 0.00 | 0.17 | 0.03 | 0.00 | 0.47 | 2.78 | 0.46 | 11.96 | |||||||||||||
1961 | 0.41 | 1.41 | 0.66 | 0.28 | 1.85 | 0.70 | 0.91 | 0.68 | 0.81 | 1.59 | 1.21 | 1.70 | 12.21 | |||||||||||||
1962 | 0.73 | 1.22 | 0.60 | 0.38 | 1.55 | 0.19 | 0.12 | 0.37 | 1.08 | 7.52 | 1.35 | 1.43 | 16.54 | |||||||||||||
1963 | 1.45 | 1.93 | 0.80 | 1.69 | 1.15 | 0.80 | 0.47 | 1.06 | 0.33 | 0.59 | 1.48 | 0.60 | 12.35 | |||||||||||||
1964 | 3.16 | 0.00 | 0.61 | 0.18 | 0.45 | 2.46 | 0.57 | 0.23 | 0.13 | 0.21 | 1.83 | 12.57 | 22.40 | |||||||||||||
1965 | 2.03 | 0.00 | 0.06 | 0.69 | 0.61 | 3.38 | 0.62 | 1.37 | 0.10 | 0.40 | 1.22 | 0.78 | 11.26 | |||||||||||||
1966 | 0.85 | 0.11 | 0.76 | 0.22 | 0.19 | 1.31 | 0.38 | 0.74 | 0.56 | 0.19 | 2.53 | 1.92 | 9.76 | |||||||||||||
1967 | 1.66 | 0.26 | 1.69 | 0.62 | 1.49 | 1.27 | 0.04 | 0.10 | 0.13 | 1.09 | 0.17 | 0.47 | 8.99 | |||||||||||||
1968 | 0.83 | 1.01 | 0.37 | 0.20 | 0.70 | 0.33 | 0.00 | 2.20 | 0.20 | 1.36 | 1.49 | 0.86 | 9.55 | |||||||||||||
1969 | 3.06 | 0.53 | 0.34 | 0.29 | 0.57 | 2.61 | 0.02 | 0.00 | 0.40 | 0.92 | 0.72 | 3.23 | 12.69 | |||||||||||||
1970 | 3.61 | 0.47 | 0.87 | 0.26 | 0.13 | 0.93 | 0.03 | 0.00 | 0.09 | 0.98 | 3.19 | 1.51 | 12.07 | |||||||||||||
1971 | 1.98 | 0.47 | 1.44 | 0.34 | 1.16 | 0.86 | 0.43 | 0.06 | 0.91 | 0.67 | 1.27 | 0.71 | c | 10.30 | ||||||||||||
1972 | 2.69 | 0.91 | 1.02 | 0.31 | 0.24 | 0.22 | 0.01 | 0.19 | 0.37 | 1.59 | 0.45 | 2.21 | 10.21 | |||||||||||||
1973 | 0.60 | 0.55 | 0.34 | 0.26 | 1.57 | 0.00 | 0.16 | 0.03 | 0.37 | 0.90 | 3.91 | 1.79 | 10.48 | |||||||||||||
1974 | 1.84 | 0.54 | 1.34 | 0.59 | 0.61 | 0.09 | 0.24 | 0.17 | 0.00 | 0.20 | 0.55 | 1.05 | 7.22 | |||||||||||||
1975 | 0.73 | 1.91 | 1.46 | 0.63 | 0.16 | 1.59 | 1.51 | 0.15 | 0.00 | 1.70 | 0.88 | 1.05 | 11.77 | |||||||||||||
1976 | 0.39 | 1.39 | 0.33 | 0.21 | 0.21 | 0.46 | 0.56 | 2.58 | 0.74 | 0.43 | 0.06 | 0.04 | 7.40 | |||||||||||||
1977 | 0.13 | 0.29 | 0.11 | 0.03 | 3.32 | 1.07 | 0.76 | 0.54 | 2.12 | 0.35 | 2.80 | 3.27 | 14.79 | |||||||||||||
1978 | 0.88 | 0.70 | 1.36 | 2.69 | 1.29 | 0.61 | 0.05 | 0.50 | 0.46 | 0.00 | 0.95 | 0.34 | 9.83 | |||||||||||||
1979 | 2.82 | 1.11 | 0.22 | 0.64 | 0.81 | 0.30 | 0.00 | 1.56 | 0.26 | 1.67 | 1.33 | 0.81 | 11.53 | |||||||||||||
1980 | 3.53 | 1.14 | 0.94 | 0.87 | 1.69 | 1.46 | 0.41 | 0.00 | 0.74 | 0.68 | 1.65 | 1.99 | 15.10 | |||||||||||||
1981 | 0.86 | 1.19 | 1.21 | 0.88 | 1.04 | 1.00 | 0.15 | 0.00 | 0.33 | 0.97 | 4.70 | 5.04 | 17.37 | |||||||||||||
1982 | 0.59 | 4.18 | 1.67 | 1.42 | 0.56 | 1.64 | 1.31 | 0.47 | 1.31 | 0.57 | 0.80 | 3.42 | 17.94 | |||||||||||||
1983 | 0.60 | 1.97 | 3.38 | 0.88 | 0.71 | 0.56 | 0.66 | 1.07 | 0.26 | 0.63 | 2.10 | 4.20 | 17.02 | |||||||||||||
1984 | 0.13 | 0.98 | 1.53 | 1.11 | 0.91 | 1.06 | 0.25 | 1.53 | 0.45 | 1.42 | 2.92 | 0.56 | 12.85 | |||||||||||||
1985 | 0.29 | 0.93 | 0.60 | 0.65 | 1.00 | 0.14 | 0.01 | 0.08 | 1.98 | 0.71 | 1.26 | 0.44 | 8.09 | |||||||||||||
1986 | 1.93 | 4.31 | 1.90 | 0.34 | 1.90 | 1.09 | 0.09 | 0.00 | 1.73 | 0.51 | 1.01 | 0.42 | 15.23 | |||||||||||||
1987 | 0.99 | 0.69 | 0.53 | 0.63 | 0.67 | 2.08 | d | 3.87 | 0.32 | 0.00 | 0.00 | 0.71 | 3.25 | 13.74 | ||||||||||||
1988 | 1.20 | 0.30 | 0.61 | 2.19 | 0.94 | 1.25 | 0.00 | 0.17 | 0.36 | 0.00 | 5.80 | 0.33 | x | 12.82 | a | |||||||||||
1989 | 1.19 | a | 0.66 | h | 2.41 | 0.69 | 0.95 | a | 0.87 | 0.00 | 1.04 | 0.89 | 0.74 | 0.41 | 0.47 | 9.66 | a | |||||||||
1990 | 1.81 | 0.15 | 1.47 | 0.81 | 0.94 | 0.32 | 0.69 | 0.86 | 0.24 | 0.82 | 0.77 | 0.16 | 9.04 | |||||||||||||
1991 | 0.11 | 0.27 | 1.82 | 1.57 | 2.20 | 1.44 | 0.17 | b | 0.89 | 0.10 | 0.83 | 1.13 | 0.90 | 11.43 | ||||||||||||
1992 | 0.52 | 0.41 | 0.41 | 0.70 | 0.03 | 0.79 | 1.05 | 0.84 | 0.40 | 0.95 | 0.98 | 2.43 | 9.51 | |||||||||||||
1993 | 2.59 | 1.21 | 2.06 | 1.86 | 2.09 | 1.70 | 1.40 | 0.44 | 0.06 | 0.82 | 0.22 | 1.18 | 15.63 | |||||||||||||
1994 | 0.43 | 0.83 | 0.49 | 0.75 | 1.30 | 0.10 | 0.08 | 0.00 | 0.67 | 0.80 | 1.46 | 0.48 | 7.39 | |||||||||||||
1995 | 2.21 | 0.93 | 1.90 | 2.47 | 1.48 | 2.02 | 0.67 | 0.07 | 0.13 | 0.37 | 1.46 | 4.92 | 18.63 | |||||||||||||
1996 | 2.47 | a | 1.57 | 0.50 | 1.41 | 1.81 | 0.89 | 0.43 | 0.75 | 0.51 | 1.14 | 3.66 | 5.17 | 20.31 | ||||||||||||
1997 | 4.07 | 1.31 | 0.57 | 1.56 | 0.61 | 0.77 | 0.47 | 0.17 | 0.92 | 1.04 | 1.43 | 0.24 | 13.16 | |||||||||||||
1998 | 3.17 | 1.50 | 0.86 | 0.69 | 3.61 | 1.13 | 0.33 | 0.22 | 1.10 | 0.34 | 4.61 | 1.03 | a | 18.59 | ||||||||||||
1999 | 3.06 | 3.09 | 0.74 | 0.55 | 0.39 | 0.05 | 0.01 | 1.06 | 0.04 | 0.74 | 0.21 | 0.58 | 10.52 | |||||||||||||
2000 | 3.02 | 2.04 | 1.05 | 1.84 | 0.97 | a | 0.13 | 0.79 | 0.00 | 0.77 | 2.14 | 0.64 | 0.90 | 14.29 | ||||||||||||
2001 | 0.12 | 0.65 | 0.61 | 1.62 | 0.73 | 0.25 | 1.05 | ----- | z | 1.07 | 0.47 | 2.50 | 2.19 | 11.26 | a | |||||||||||
2002 | 0.79 | 0.69 | 0.32 | 1.30 | 0.30 | 0.13 | 0.09 | 0.23 | 0.45 | x | 0.30 | 0.48 | 1.83 | 6.46 | a | |||||||||||
2003 | 1.56 | 0.76 | 1.44 | 1.42 | 1.12 | 0.00 | 0.42 | 0.27 | 0.97 | 0.30 | 0.69 | 1.33 | 10.28 | |||||||||||||
2004 | 1.32 | 1.98 | 0.43 | 0.94 | 2.03 | 0.38 | 0.13 | 1.01 | 0.15 | 1.63 | 0.42 | 3.22 | 13.64 | |||||||||||||
2005 | 0.96 | 0.21 | 0.00 | k | 1.73 | 3.67 | 1.29 | 0.05 | 0.06 | 0.53 | 1.69 | 4.16 | 4.67 | b | 19.02 | a | ||||||||||
2006 | 2.04 | 1.34 | 0.58 | 1.08 | 0.46 | 1.45 | 0.04 | 0.91 | 0.08 | 0.41 | 2.69 | 1.94 | 13.02 | |||||||||||||
2007 | 0.83 | 2.21 | 0.61 | 0.96 | 0.49 | 0.61 | 0.35 | 0.72 | 1.16 | 2.56 | 1.25 | 0.83 | 12.58 | |||||||||||||
2008 | 1.20 | 0.31 | 0.81 | 0.12 | 2.22 | 0.22 | 0.02 | 0.06 | 0.20 | 0.22 | 1.18 | 1.66 | 8.22 | |||||||||||||
2009 | 0.62 | 0.93 | 1.36 | 0.70 | 1.77 | 3.08 | 0.00 | 1.41 | 0.00 | 0.60 | 0.80 | 0.36 | 11.63 | |||||||||||||
2010 | 1.37 | 0.36 | 1.41 | 1.60 | 1.38 | 1.05 | 0.66 | 0.22 | b | 0.25 | 2.15 | 1.34 | a | 3.52 | a | 15.31 | ||||||||||
2011 | 0.38 | 1.29 | 3.10 | 2.13 | 1.17 | 0.50 | 0.13 | 0.11 | 0.01 | 0.40 | 0.75 | 1.07 | 11.04 | |||||||||||||
2012 | 1.45 | 0.53 | 2.83 | 0.88 | 0.65 | 0.46 | 0.05 | 0.10 | 0.17 | 0.41 | 1.78 | 3.28 | 12.59 | |||||||||||||
2013 | 0.54 | 0.24 | 0.32 | 0.98 | 1.55 | 0.88 | 0.29 | 0.39 | 3.12 | 0.40 | 0.56 | 0.26 | 9.53 | |||||||||||||
2014 | 0.74 | 2.77 | 2.05 | 0.85 | 0.69 | 0.52 | 0.43 | 1.19 | 0.32 | a | 2.07 | 2.10 | 2.73 | 16.46 | ||||||||||||
2015 | 0.59 | 1.09 | 1.10 | 0.43 | 2.06 | 0.04 | 0.52 | 0.39 | 0.49 | 0.58 | 0.55 | 2.94 | 10.78 | |||||||||||||
2016 | 2.14 | 0.62 | 1.31 | 0.84 | 2.12 | 0.77 | 0.18 | b | 0.00 | 0.05 | 2.56 | 0.70 | 3.19 | 14.48 | ||||||||||||
2017 | 3.49 | 3.42 | 1.67 | 0.99 | 0.41 | 1.30 | 0.72 | 0.04 | 0.32 | 0.87 | 2.48 | 0.39 | 16.10 | |||||||||||||
2018 | 1.22 | 0.32 | 1.46 | 0.77 | b | 1.85 | a | 0.82 | 0.02 | 0.05 | a | 0.03 | 0.73 | 1.22 | 1.89 | 10.38 | ||||||||||
2019 | 1.27 | 2.57 | 1.50 | 1.82 | 2.67 | 0.84 | 0.01 | 0.20 | 2.03 | 0.39 | 0.37 | 1.51 | 15.18 | |||||||||||||
2020 | 1.93 | 0.27 | 1.89 | 0.40 | 1.03 | 0.55 | f | 0.06 | j | 0.30 | d | 0.00 | f | 0.20 | a | 2.39 | 0.56 | a | 8.97 | c | ||||||
2021 | 0.61 | 0.79 | 0.21 | a | 0.54 | b | 0.72 | c | 0.47 | e | 0.60 | 0.02 | a | 1.10 | S | 1.32 | 1.68 | 1.41 | a | 9.47 | ||||||
2022 | 0.68 | a | 0.14 | b | 0.32 | a | 1.62 | a | 1.42 | 1.05 | 0.10 | 0.80 | a | 0.33 | a | 0.30 | 1.16 | a | 3.17 | a | 11.09 | |||||
2023 | 0.61 | a | 0.35 | 2.85 | 0.73 | 1.61 | 1.99 | 0.16 | 1.71 | 0.42 | c | 0.41 | 0.96 | 1.12 | 12.92 | |||||||||||
2024 | 1.63 | 1.26 | 0.96 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 2.89 | j | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 1.45 | 1.11 | 1.12 | 0.93 | 1.25 | 0.93 | 0.42 | 0.52 | 0.58 | 0.93 | 1.53 | 1.86 | 12.58 | |||||||||||||
S.D. | 1.01 | 0.93 | 0.75 | 0.61 | 0.82 | 0.76 | 0.57 | 0.57 | 0.61 | 1.02 | 1.21 | 1.89 | 3.34 | |||||||||||||
SKEW | 0.78 | 1.54 | 0.97 | 0.81 | 0.94 | 1.15 | 3.61 | 1.43 | 1.82 | 4.24 | 1.46 | 3.04 | 0.67 | |||||||||||||
MAX | 4.07 | 4.31 | 3.38 | 2.69 | 3.67 | 3.38 | 3.87 | 2.58 | 3.12 | 7.52 | 5.80 | 12.57 | 22.40 | |||||||||||||
MIN | 0.11 | 0.00 | 0.06 | 0.03 | 0.03 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.05 | 0.04 | 7.22 | |||||||||||||
YRS | 67 | 66 | 66 | 67 | 67 | 66 | 66 | 66 | 65 | 67 | 67 | 66 | 60 |