YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.23 | t | 3.65 | 4.64 | 1.98 | 1.27 | 0.23 | 0.47 | 12.24 | f | ||||||
1950 | 0.00 | 0.01 | 0.00 | 0.16 | 0.87 | 1.68 | 9.15 | 2.47 | 1.43 | 0.94 | 0.00 | 0.02 | 16.73 | |||||||||||||
1951 | 0.72 | 0.98 | 0.26 | 0.25 | 2.53 | 0.65 | 4.44 | 0.80 | 0.10 | 2.03 | 0.13 | 0.41 | 13.30 | |||||||||||||
1952 | 0.22 | 0.10 | 0.28 | 2.67 | 0.54 | 1.41 | 0.59 | 1.33 | 0.84 | 0.00 | 1.28 | 0.59 | 9.85 | |||||||||||||
1953 | 0.57 | 0.27 | 0.61 | 0.29 | 0.93 | 0.08 | 3.17 | 2.16 | 0.02 | 1.76 | 0.33 | 0.30 | 10.49 | |||||||||||||
1954 | 0.23 | 0.36 | 0.10 | 0.88 | 1.20 | 0.71 | 1.13 | 4.00 | 0.27 | 2.79 | 0.00 | 0.15 | 11.82 | |||||||||||||
1955 | 0.18 | 0.00 | 0.04 | 0.88 | 1.91 | 1.68 | 5.06 | 2.27 | 2.38 | 0.49 | 0.01 | 0.08 | 14.98 | |||||||||||||
1956 | 0.06 | 1.05 | 0.00 | 0.22 | 1.76 | 2.30 | 2.88 | 1.44 | 0.18 | 2.56 | 0.00 | 0.00 | 12.45 | |||||||||||||
1957 | 0.03 | 0.47 | 1.19 | 1.11 | 5.08 | 0.73 | 4.00 | 4.08 | 0.57 | 2.72 | 0.54 | 0.02 | 20.54 | |||||||||||||
1958 | 1.25 | 0.30 | 1.91 | 1.25 | 2.21 | 1.25 | 1.91 | 3.16 | 5.02 | 0.67 | 0.26 | 0.32 | 19.51 | |||||||||||||
1959 | 0.07 | 0.11 | 0.43 | 0.23 | 2.51 | 5.89 | 3.66 | 4.78 | 0.30 | 1.42 | 0.02 | 1.92 | 21.34 | |||||||||||||
1960 | 1.15 | 0.92 | 0.30 | 0.30 | 0.48 | 4.03 | 11.33 | 2.60 | 1.27 | 4.14 | 0.00 | 1.83 | 28.35 | |||||||||||||
1961 | 0.50 | 0.14 | 3.06 | 0.05 | 1.49 | 2.74 | 3.63 | 2.76 | 2.42 | 0.78 | 1.68 | 0.73 | 19.98 | |||||||||||||
1962 | 0.50 | 0.57 | 0.55 | 1.40 | 0.35 | 1.39 | 3.29 | 0.69 | 2.67 | 0.92 | 0.36 | 0.42 | 13.11 | |||||||||||||
1963 | 0.10 | 0.62 | 0.00 | 0.20 | 2.37 | 8.26 | 3.27 | 3.74 | 0.74 | 0.17 | 0.68 | 0.17 | 20.32 | |||||||||||||
1964 | 0.00 | 0.93 | 0.28 | 0.00 | 1.50 | 1.54 | 0.20 | 1.35 | 3.74 | 0.00 | 1.23 | 0.36 | 11.13 | |||||||||||||
1965 | 0.10 | 0.56 | 0.70 | 0.49 | 1.84 | 2.94 | 0.76 | 1.93 | 1.24 | 0.49 | 0.00 | 0.42 | 11.47 | |||||||||||||
1966 | 0.36 | 0.15 | 0.00 | 0.35 | 1.33 | 4.62 | 1.71 | 3.13 | 0.80 | 0.00 | 0.38 | 0.30 | 13.13 | |||||||||||||
1967 | 0.00 | 0.11 | 0.17 | 0.72 | 0.32 | 3.85 | 4.87 | 1.51 | 1.19 | 0.08 | 0.18 | 0.63 | 13.63 | |||||||||||||
1968 | 1.31 | 0.31 | 0.86 | 0.66 | 0.92 | 0.65 | 1.16 | 2.66 | 1.44 | 0.59 | 0.50 | 0.23 | 11.29 | |||||||||||||
1969 | 0.00 | 0.85 | 0.83 | 1.00 | 6.90 | 1.93 | 2.57 | 1.90 | 2.09 | 4.42 | 0.30 | 0.92 | 23.71 | |||||||||||||
1970 | 0.00 | 0.10 | 0.68 | 0.20 | 0.21 | 3.51 | 1.79 | 1.49 | 3.54 | 0.63 | 0.00 | 0.02 | 12.17 | |||||||||||||
1971 | 0.02 | 0.04 | 0.10 | 1.15 | 0.58 | 0.88 | 2.42 | 3.11 | 2.44 | 1.38 | 2.52 | 0.53 | 15.17 | |||||||||||||
1972 | 0.12 | 0.16 | 0.01 | 0.00 | 1.11 | 3.85 | 6.06 | 3.81 | 3.88 | 2.87 | 1.09 | 0.46 | 23.42 | |||||||||||||
1973 | 0.48 | 1.03 | 1.94 | 2.43 | 1.52 | 0.54 | a | 5.10 | 0.82 | 1.63 | 0.57 | 0.08 | 0.11 | 16.25 | ||||||||||||
1974 | 0.61 | 0.19 | 0.00 | 0.00 | 0.10 | 1.12 | 1.45 | 7.03 | 2.16 | 5.08 | 0.11 | 0.60 | 18.45 | |||||||||||||
1975 | 0.24 | 0.78 | 0.39 | 1.48 | 0.77 | 0.83 | 3.22 | 0.26 | 1.08 | 0.00 | 1.09 | 0.11 | 10.25 | |||||||||||||
1976 | 0.00 | 0.16 | 0.21 | 0.20 | 0.64 | 1.37 | 1.26 | 2.46 | 2.56 | 0.56 | 0.42 | 0.00 | 9.84 | |||||||||||||
1977 | 0.10 | 0.44 | 0.36 | 1.68 | 4.26 | 1.76 | 2.28 | 3.35 | 0.75 | 0.61 | 0.21 | 0.05 | 15.85 | |||||||||||||
1978 | 0.43 | 0.50 | 0.36 | 0.82 | 1.81 | 1.89 | 0.27 | 2.14 | 3.47 | 0.64 | 1.34 | 0.34 | 14.01 | |||||||||||||
1979 | 0.43 | 0.00 | 0.29 | 1.38 | 3.37 | 5.26 | 4.75 | 3.03 | 2.21 | 0.21 | 0.18 | 0.19 | 21.30 | |||||||||||||
1980 | 0.32 | 0.40 | 0.46 | 0.15 | 2.60 | 0.12 | 0.10 | 2.03 | 1.95 | 0.42 | 0.22 | 0.26 | 9.03 | |||||||||||||
1981 | 0.16 | 0.35 | 0.95 | 0.89 | 1.29 | 2.56 | 5.19 | 10.27 | 2.46 | 2.10 | 0.55 | 0.02 | 26.79 | |||||||||||||
1982 | 0.04 | a | 0.17 | b | ----- | z | 0.18 | 2.25 | 2.12 | 4.36 | a | 1.66 | 0.87 | 0.87 | 0.33 | b | 0.25 | w | 12.85 | b | ||||||
1983 | 0.60 | b | 0.16 | h | 0.53 | 0.76 | b | 2.69 | a | 1.91 | c | 0.66 | j | 0.50 | 0.47 | 3.98 | 0.20 | 0.17 | h | 11.64 | c | |||||
1984 | 0.13 | 0.14 | 0.40 | c | 1.40 | a | 2.95 | a | 4.59 | 2.49 | 5.54 | 0.16 | 3.12 | 1.62 | ----- | z | 22.54 | a | ||||||||
1985 | 0.42 | 0.02 | 2.80 | 1.64 | 2.73 | 2.81 | 1.97 | 1.52 | 5.00 | 2.56 | a | 0.21 | a | 0.15 | 21.83 | |||||||||||
1986 | 0.00 | a | 0.75 | 0.45 | c | 0.96 | a | 4.10 | 2.67 | 0.99 | 5.95 | 3.90 | 2.92 | 2.53 | 1.05 | 26.27 | ||||||||||
1987 | 0.27 | 1.29 | 0.24 | 0.17 | 4.44 | 2.04 | 0.22 | 9.35 | 1.73 | 0.78 | 0.30 | 1.50 | 22.33 | |||||||||||||
1988 | ----- | z | 0.02 | 0.11 | 1.28 | 10.60 | b | 6.86 | 2.81 | 1.89 | 1.90 | 0.00 | 0.03 | 0.20 | a | 25.70 | a | |||||||||
1989 | 0.21 | 0.50 | 0.05 | 0.43 | 2.84 | 2.93 | 1.87 | 3.25 | 1.38 | 0.06 | 0.00 | 0.62 | b | 14.14 | ||||||||||||
1990 | 1.02 | 0.64 | 0.15 | 1.30 | 0.15 | 0.00 | 1.83 | 2.48 | 2.43 | 0.57 | 0.71 | 0.29 | 11.57 | |||||||||||||
1991 | 0.61 | 0.02 | 0.63 | 0.00 | 0.99 | 0.41 | 13.95 | a | 3.15 | 2.90 | 0.41 | 1.36 | 2.78 | 27.21 | ||||||||||||
1992 | 0.59 | a | 0.45 | 1.52 | 0.51 | 3.11 | 4.02 | 1.22 | 2.60 | 3.20 | 0.05 | 0.23 | 0.03 | n | 17.50 | a | ||||||||||
1993 | 0.28 | 0.02 | a | 0.21 | a | 0.52 | 0.96 | 2.50 | 2.79 | b | 1.79 | 1.22 | 2.06 | 0.41 | 0.09 | 12.85 | ||||||||||
1994 | 0.06 | 0.17 | 1.42 | 0.69 | 3.86 | 1.47 | 2.17 | 2.11 | 0.65 | ----- | z | 0.33 | 0.30 | 13.23 | a | |||||||||||
1995 | 0.57 | 0.00 | ----- | z | 0.43 | 2.69 | 2.21 | 1.28 | 1.86 | 3.34 | 1.36 | 0.04 | 0.96 | 14.74 | a | |||||||||||
1996 | 0.01 | 0.04 | 0.00 | 0.00 | 0.16 | 2.61 | 2.60 | 5.25 | 3.12 | 1.50 | 0.61 | 0.00 | 15.90 | |||||||||||||
1997 | 0.48 | 0.45 | 0.00 | 4.99 | 2.28 | 3.96 | 1.88 | 2.70 | 1.68 | 1.30 | 0.37 | 1.59 | d | 21.68 | ||||||||||||
1998 | 0.00 | 1.07 | 1.53 | 1.37 | 0.00 | 0.14 | 1.71 | 1.39 | 0.56 | 8.87 | 0.43 | 0.13 | 17.20 | |||||||||||||
1999 | 1.48 | 0.00 | 1.10 | 2.32 | 2.53 | 1.29 | 2.52 | 4.18 | 2.44 | 0.37 | 0.01 | 0.52 | 18.76 | |||||||||||||
2000 | 0.12 | 0.01 | 2.81 | 0.24 | 0.19 | 6.00 | 5.16 | 0.00 | 0.00 | 7.41 | 0.89 | 0.39 | 23.22 | |||||||||||||
2001 | 0.71 | 0.24 | 2.58 | ----- | z | 2.32 | 0.03 | 0.71 | 1.92 | 0.80 | 0.55 | 1.60 | 0.12 | 11.58 | a | |||||||||||
2002 | 0.38 | 0.04 | 1.28 | 0.24 | 0.38 | 1.20 | 0.90 | 3.52 | 0.37 | a | 1.89 | 0.65 | 0.76 | 11.61 | ||||||||||||
2003 | 0.00 | 0.20 | 0.68 | 0.06 | 1.90 | 4.33 | d | 0.00 | ----- | z | 1.31 | 2.36 | e | 0.00 | f | 0.00 | b | 10.84 | b | |||||||
2004 | 0.12 | 1.70 | 1.37 | 2.69 | 0.38 | 5.09 | 4.93 | b | 5.53 | 5.19 | 4.17 | 2.61 | a | 0.57 | 34.35 | |||||||||||
2005 | 1.44 | 0.75 | 0.89 | 0.77 | 1.88 | 0.51 | 1.25 | 4.97 | 1.90 | 1.47 | 0.00 | 0.00 | 15.83 | |||||||||||||
2006 | 0.00 | 0.09 | 0.61 | 0.25 | 0.58 | 1.42 | 0.66 | 4.89 | 1.90 | 1.78 | 0.06 | 1.20 | 13.44 | |||||||||||||
2007 | 0.86 | 0.19 | 3.70 | 0.18 | 2.38 | 3.93 | 0.94 | 1.15 | 4.24 | 0.17 | 0.12 | 0.80 | 18.66 | |||||||||||||
2008 | 0.03 | 0.20 | 0.10 | 0.74 | 1.75 | 3.95 | 4.74 | 3.58 | 1.02 | 4.51 | 0.11 | 0.03 | 20.76 | |||||||||||||
2009 | 0.00 | 0.27 | 0.35 | 0.83 | 0.24 | 1.35 | 6.56 | 4.25 | 0.87 | 2.38 | 0.17 | 0.27 | 17.54 | |||||||||||||
2010 | 1.12 | 1.10 | 1.75 | 1.56 | 2.34 | 2.98 | 2.30 | 6.83 | 1.41 | 0.87 | 0.30 | 0.03 | 22.59 | |||||||||||||
2011 | 0.00 | 0.30 | 0.00 | 0.00 | 0.00 | 1.46 | 0.23 | 1.96 | 1.40 | 1.22 | 0.08 | 1.72 | 8.37 | |||||||||||||
2012 | 0.00 | 0.25 | 0.14 | 0.33 | 2.52 | 1.51 | 0.50 | 1.86 | 2.06 | 0.43 | 0.04 | 0.08 | 9.72 | |||||||||||||
2013 | 0.45 | 0.79 | 0.02 | 0.00 | 0.45 | 1.67 | 3.26 | 1.53 | 4.19 | 0.12 | 0.70 | 0.28 | 13.46 | |||||||||||||
2014 | 0.00 | 0.06 | 0.20 | 0.15 | 3.10 | 3.29 | 2.23 | 0.61 | 2.65 | 0.35 | 0.23 | 0.04 | 12.91 | |||||||||||||
2015 | 1.32 | 0.64 | 0.61 | 0.61 | 7.44 | 1.77 | 2.78 | 3.86 | 2.54 | 8.21 | 1.04 | 0.25 | 31.07 | |||||||||||||
2016 | 0.08 | 0.16 | 0.00 | 0.49 | 1.08 | 4.26 | 0.93 | 3.25 | 2.26 | 0.01 | 1.00 | 0.17 | 13.69 | |||||||||||||
2017 | 1.11 | 0.36 | 0.93 | 0.49 | 2.08 | 1.02 | 2.18 | 7.87 | 4.13 | 2.04 | 0.00 | 0.00 | 22.21 | |||||||||||||
2018 | 0.00 | 0.90 | 0.04 | 0.69 | 1.60 | 1.71 | 3.05 | 3.94 | 1.80 | 3.99 | 0.17 | 0.14 | 18.03 | |||||||||||||
2019 | 0.16 | 0.18 | 1.15 | 2.49 | 1.69 | 2.09 | 4.45 | 3.14 | 0.59 | 7.53 | 0.78 | 0.55 | 24.80 | |||||||||||||
2020 | 0.67 | 0.37 | 1.19 | 0.43 | 0.05 | 1.16 | 3.90 | 0.55 | 0.56 | 0.52 | 0.04 | 0.00 | 9.44 | |||||||||||||
2021 | 0.17 | 0.06 | 0.16 | 0.22 | 1.17 | 3.95 | 5.59 | a | 2.23 | 1.21 | g | 0.43 | 0.00 | 0.02 | 14.00 | a | ||||||||||
2022 | 0.14 | 0.10 | 0.52 | 0.00 | 1.09 | 0.54 | b | 2.05 | 4.15 | 0.07 | 2.94 | 0.42 | 0.30 | 12.32 | ||||||||||||
2023 | 0.33 | 0.03 | 0.00 | 0.10 | 10.26 | o | 3.33 | 1.45 | 3.16 | 2.52 | 0.93 | 0.34 | 1.54 | 13.73 | a | |||||||||||
2024 | 1.40 | ----- | z | ----- | z | 1.49 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.40 | k | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.37 | 0.38 | 0.69 | 0.77 | 1.93 | 2.37 | 2.89 | 3.04 | 1.89 | 1.76 | 0.50 | 0.46 | 17.04 | |||||||||||||
S.D. | 0.42 | 0.37 | 0.82 | 0.85 | 1.80 | 1.71 | 2.42 | 1.98 | 1.30 | 1.98 | 0.61 | 0.55 | 5.92 | |||||||||||||
SKEW | 1.22 | 1.21 | 1.75 | 2.27 | 2.23 | 1.02 | 2.07 | 1.35 | 0.64 | 1.83 | 1.84 | 1.98 | 0.72 | |||||||||||||
MAX | 1.48 | 1.70 | 3.70 | 4.99 | 10.60 | 8.26 | 13.95 | 10.27 | 5.19 | 8.87 | 2.61 | 2.78 | 34.35 | |||||||||||||
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 | 8.37 | |||||||||||||
YRS | 74 | 73 | 72 | 73 | 73 | 74 | 74 | 74 | 74 | 74 | 74 | 71 | 63 |