YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.53 | l | 0.52 | 0.00 | 0.00 | 0.52 | i | |||
1951 | 0.01 | 0.31 | 0.52 | 0.12 | 0.23 | 0.00 | 0.84 | 2.74 | 0.65 | 0.32 | 0.00 | 0.27 | 6.01 | |||||||||||||
1952 | 0.11 | 0.43 | 0.01 | 0.96 | 0.68 | 0.30 | 1.30 | 0.15 | 1.65 | 0.00 | 1.01 | 0.80 | 7.40 | |||||||||||||
1953 | 0.01 | 0.44 | 0.65 | 0.58 | 0.07 | 0.02 | 0.25 | 0.83 | 0.00 | 5.33 | 0.00 | 0.27 | 8.45 | |||||||||||||
1954 | 0.30 | 0.00 | 0.00 | 1.45 | 2.31 | 0.87 | 0.57 | 0.95 | 0.38 | 3.55 | 0.00 | 0.02 | 10.40 | |||||||||||||
1955 | 1.09 | ----- | z | ----- | z | 0.00 | 3.69 | 1.65 | 3.28 | ----- | z | ----- | z | ----- | z | 0.30 | ----- | z | 10.01 | f | ||||||
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | 0.39 | 0.39 | j | ||
1957 | 0.41 | 1.23 | 0.00 | 0.36 | 1.60 | 0.60 | 1.22 | 1.18 | 1.08 | 2.92 | 1.64 | 0.00 | 12.24 | |||||||||||||
1958 | 2.01 | 1.95 | 0.28 | 1.48 | 2.09 | 0.21 | 1.16 | 1.95 | 5.19 | 2.60 | 0.66 | 0.00 | 19.58 | |||||||||||||
1959 | 0.00 | 0.38 | 0.00 | 0.37 | 3.65 | 1.12 | 4.27 | 0.14 | 1.77 | 4.48 | 1.64 | 0.51 | 18.33 | |||||||||||||
1960 | 0.95 | 0.48 | 0.23 | 0.22 | 1.86 | 0.29 | 4.31 | 3.41 | 0.18 | 2.13 | 0.10 | 2.09 | 16.25 | |||||||||||||
1961 | 1.48 | 0.38 | 1.21 | 0.00 | 1.12 | 1.99 | 4.41 | 0.29 | 2.81 | 0.01 | 1.54 | 0.27 | 15.51 | |||||||||||||
1962 | 0.12 | 0.00 | 0.47 | 0.63 | 0.67 | 0.47 | 2.55 | 2.78 | 6.46 | 0.57 | 0.00 | 0.50 | 15.22 | |||||||||||||
1963 | 0.00 | 0.56 | 0.00 | 1.22 | 3.40 | 3.43 | 0.19 | 2.14 | 0.73 | 0.04 | 1.44 | 0.31 | 13.46 | |||||||||||||
1964 | 0.42 | 0.06 | 0.49 | 0.00 | 0.85 | 0.81 | 0.00 | 0.00 | 2.85 | 0.15 | 0.13 | 0.44 | 6.20 | |||||||||||||
1965 | 0.11 | 2.22 | 0.00 | 0.42 | 3.54 | 1.14 | 0.03 | 1.92 | 0.88 | 0.98 | 0.02 | 0.20 | 11.46 | |||||||||||||
1966 | 0.60 | 0.37 | 0.15 | 3.55 | 1.09 | 2.35 | 0.37 | 2.36 | 4.24 | 0.95 | 0.00 | 0.00 | 16.03 | |||||||||||||
1967 | 0.00 | 0.00 | 0.06 | 0.90 | 0.38 | 2.07 | 1.22 | 0.62 | 2.82 | 0.05 | 0.71 | 0.19 | 9.02 | |||||||||||||
1968 | 0.69 | 0.80 | 1.54 | 1.92 | 1.79 | 1.08 | 2.67 | 2.12 | ----- | z | 0.64 | 2.59 | 0.18 | 16.02 | a | |||||||||||
1969 | 0.00 | 0.90 | 0.38 | 2.94 | 4.92 | 2.29 | 0.52 | 0.68 | 0.94 | 3.29 | 0.99 | 1.71 | 19.56 | |||||||||||||
1970 | 0.01 | 1.25 | 3.52 | 0.29 | 0.14 | 1.20 | 0.09 | 1.13 | 1.28 | 1.17 | 0.00 | 0.12 | 10.20 | |||||||||||||
1971 | 0.00 | 0.00 | 0.00 | 0.69 | 1.53 | 1.14 | 1.57 | 3.35 | 3.26 | 1.18 | 0.92 | 0.77 | 14.41 | |||||||||||||
1972 | 0.23 | 0.40 | 0.00 | 0.21 | 1.25 | 1.85 | 0.47 | 2.73 | 1.29 | 2.35 | 0.04 | 0.00 | 10.82 | |||||||||||||
1973 | 0.48 | 1.39 | 1.74 | 1.63 | 0.35 | 0.56 | 2.95 | 0.00 | 0.60 | 0.17 | 0.00 | 0.00 | 9.87 | |||||||||||||
1974 | 0.52 | 0.00 | 0.15 | 2.60 | 0.12 | 2.18 | 0.17 | 4.62 | 7.32 | 6.03 | 0.67 | 0.54 | 24.92 | |||||||||||||
1975 | 0.80 | 0.74 | 0.10 | 0.08 | 3.02 | 1.03 | 3.73 | 1.79 | 6.01 | 0.37 | 0.99 | 0.56 | 19.22 | |||||||||||||
1976 | 0.00 | 0.08 | 0.10 | 0.24 | 1.42 | 2.41 | 3.37 | 4.13 | 2.63 | 1.56 | 0.40 | 0.00 | 16.34 | |||||||||||||
1977 | 0.49 | 0.57 | 0.62 | 1.27 | 1.07 | 0.30 | 0.96 | 0.00 | 0.00 | 1.41 | 0.02 | 0.32 | 7.03 | |||||||||||||
1978 | 0.20 | 1.92 | a | 0.00 | 0.13 | 3.52 | 3.42 | 1.01 | 0.49 | 5.22 | 3.57 | 1.15 | 0.00 | 20.63 | ||||||||||||
1979 | 0.00 | ----- | z | 0.25 | 0.00 | 0.91 | 4.84 | 2.28 | 1.00 | 0.15 | 0.15 | 0.00 | 2.11 | 11.69 | a | |||||||||||
1980 | 0.37 | 0.11 | 0.00 | 0.78 | 1.13 | 1.50 | 0.19 | 1.49 | 10.03 | 0.14 | 0.56 | 1.06 | 17.36 | |||||||||||||
1981 | 0.25 | b | 0.42 | 0.92 | 2.77 | 1.18 | 0.71 | 0.18 | 0.86 | 1.87 | 3.19 | 0.00 | 0.00 | 12.35 | ||||||||||||
1982 | 0.08 | 0.25 | 0.00 | 0.88 | 6.48 | 1.05 | 2.04 | 0.74 | 1.49 | 0.11 | 0.76 | 1.18 | 15.06 | |||||||||||||
1983 | 0.49 | 0.20 | 0.48 | 0.07 | 2.04 | 1.54 | 0.33 | 0.85 | 3.45 | a | 4.08 | 2.47 | 0.12 | 16.12 | ||||||||||||
1984 | 0.46 | 0.00 | 0.00 | 0.00 | 1.85 | 3.20 | 0.34 | 0.84 | 1.05 | 2.94 | 2.00 | 1.06 | 13.74 | |||||||||||||
1985 | 0.48 | a | 0.76 | b | 0.66 | 0.00 | 1.55 | 2.52 | 1.83 | 0.78 | 2.89 | 3.08 | 0.48 | 0.05 | 15.08 | |||||||||||
1986 | 0.05 | 0.00 | 0.00 | 0.14 | 3.65 | 3.08 | 2.45 | 4.31 | 8.45 | 4.60 | 1.38 | x | 2.67 | 29.40 | a | |||||||||||
1987 | 0.00 | 1.41 | 1.08 | 0.62 | 7.19 | 1.57 | 0.27 | a | 2.21 | 2.30 | 0.50 | 0.03 | 0.24 | 17.42 | ||||||||||||
1988 | 0.19 | 0.07 | 0.85 | 0.14 | 1.48 | 0.28 | 4.56 | 1.02 | 6.63 | 0.03 | 0.00 | 0.17 | 15.42 | |||||||||||||
1989 | 0.24 | 1.33 | 0.11 | 0.52 | 0.72 | 0.63 | 0.03 | 1.88 | 1.91 | 0.02 | 0.20 | 0.10 | 7.69 | |||||||||||||
1990 | 0.03 | 1.20 | 0.93 | 1.21 | 0.28 | 0.00 | 0.17 | 1.25 | 1.39 | 1.24 | 0.35 | 0.59 | 8.64 | |||||||||||||
1991 | 0.95 | 0.33 | 0.05 | 0.00 | 0.25 | 0.35 | 5.51 | 4.03 | 5.06 | 0.52 | 0.80 | 3.14 | 20.99 | |||||||||||||
1992 | 1.33 | 1.99 | 0.47 | 0.81 | 7.00 | 1.31 | 1.71 | 2.26 | 0.43 | 0.00 | 0.67 | 0.37 | 18.35 | |||||||||||||
1993 | 1.03 | 0.63 | 0.34 | 1.39 | 1.34 | 0.07 | 1.54 | 0.90 | 1.33 | 1.64 | 0.02 | 0.32 | 10.55 | |||||||||||||
1994 | 1.07 | 0.03 | 0.01 | 0.05 | 0.79 | 0.41 | 3.08 | 1.95 | 0.35 | 0.37 | 1.00 | 0.20 | 9.31 | |||||||||||||
1995 | 0.91 | 0.63 | 0.21 | 0.38 | 2.49 | 1.83 | 0.52 | 0.20 | 2.17 | 0.51 | 0.00 | 0.16 | 10.01 | |||||||||||||
1996 | 0.20 | 0.00 | 0.10 | 1.15 | 0.24 | 2.58 | 0.75 | 2.87 | 0.76 | 0.21 | 1.28 | 0.00 | 10.14 | |||||||||||||
1997 | 0.24 | 1.98 | 0.13 | 1.82 | 2.34 | 1.31 | 1.71 | 0.51 | 0.52 | 1.15 | 0.44 | 2.04 | 14.19 | |||||||||||||
1998 | 0.31 | 0.45 | 1.71 | 0.00 | 0.02 | 0.44 | 0.34 | 1.00 | 0.33 | 1.15 | 0.44 | 0.55 | 6.74 | |||||||||||||
1999 | 0.37 | 0.00 | 1.44 | 0.18 | 1.09 | 0.85 | 0.79 | ----- | z | 3.27 | 0.20 | 0.00 | 0.02 | 8.21 | a | |||||||||||
2000 | 0.50 | 0.60 | f | 0.65 | 0.15 | a | 0.57 | 2.34 | 0.05 | 0.03 | 0.00 | 4.97 | 1.04 | 0.40 | a | 10.70 | a | |||||||||
2001 | 0.81 | 1.33 | 0.64 | 0.02 | 1.35 | 0.07 | 0.00 | 2.04 | 0.63 | 0.07 | 1.08 | 0.14 | 8.18 | |||||||||||||
2002 | 0.09 | 1.07 | 1.04 | 0.42 | 0.27 | 0.47 | 2.48 | 0.41 | 1.21 | a | 3.85 | 0.62 | 0.97 | 12.90 | ||||||||||||
2003 | 0.18 | c | 0.92 | 0.22 | 0.03 | 2.89 | ----- | z | 0.22 | 2.19 | 0.61 | 0.46 | 0.14 | 0.01 | 7.87 | a | ||||||||||
2004 | 1.12 | 0.75 | 1.43 | ----- | z | 0.01 | 0.99 | 1.67 | 1.31 | 2.58 | 3.55 | 4.59 | 0.03 | 18.03 | a | |||||||||||
2005 | 0.49 | 1.33 | 0.55 | 0.00 | 3.99 | 0.45 | 1.38 | 2.86 | 0.00 | 3.93 | 0.00 | 0.02 | 15.00 | |||||||||||||
2006 | 0.11 | 0.72 | 1.64 | 0.32 | 0.12 | 0.35 | 0.98 | 5.53 | 1.57 | 1.83 | 0.00 | 1.65 | 14.82 | |||||||||||||
2007 | 1.11 | a | 0.12 | 2.54 | a | 1.90 | 0.00 | 2.01 | 1.14 | 2.18 | 2.24 | a | 0.34 | 0.00 | 0.06 | a | 13.64 | |||||||||
2008 | 0.35 | a | 0.02 | 0.84 | 0.18 | 0.22 | 1.14 | c | 0.13 | 5.08 | 2.26 | 1.90 | 0.00 | 0.00 | 12.12 | |||||||||||
2009 | 0.00 | 0.36 | b | 0.65 | 0.50 | 0.98 | a | 3.52 | 7.39 | 2.00 | 1.31 | 1.07 | 0.00 | 0.78 | 18.56 | |||||||||||
2010 | 1.57 | 1.13 | 0.61 | 1.14 | 0.72 | 1.41 | a | 2.49 | 1.16 | 1.09 | 0.00 | 0.00 | 0.00 | 11.32 | ||||||||||||
2011 | 0.00 | 0.06 | 0.00 | 0.00 | 0.00 | 0.00 | 0.20 | 1.50 | 0.85 | 0.50 | 0.20 | 1.27 | 4.58 | |||||||||||||
2012 | 1.15 | 0.13 | 0.19 | 0.31 | a | 2.59 | 0.65 | 1.51 | 0.89 | c | 5.73 | 0.28 | 0.00 | d | 0.03 | e | 13.46 | |||||||||
2013 | 1.14 | d | 0.00 | e | 0.00 | d | 0.00 | 0.21 | g | 0.41 | c | 1.79 | 0.05 | 1.01 | e | 2.30 | b | 0.38 | f | 1.29 | d | 7.99 | b | |||
2014 | 0.00 | a | 0.24 | f | 0.07 | c | 0.42 | e | 2.16 | d | 0.97 | a | 0.84 | 1.35 | b | 4.43 | a | 0.10 | a | 1.59 | d | 0.20 | c | 12.13 | a | |
2015 | 2.46 | f | 0.32 | a | 1.70 | b | 0.23 | c | 3.38 | a | 0.83 | b | 0.24 | c | 1.53 | a | 0.46 | 1.50 | c | 1.97 | d | 0.55 | c | 12.71 | a | |
2016 | 0.17 | b | 0.20 | c | 0.00 | 0.92 | d | 0.22 | a | 2.96 | e | 0.39 | g | 1.62 | f | 1.82 | c | 0.22 | e | 2.07 | h | 0.28 | d | 6.79 | c | |
2017 | 0.08 | g | 0.27 | d | 0.55 | c | 1.48 | S | 0.97 | f | 3.60 | a | 0.20 | 5.24 | e | 3.28 | c | 0.02 | 0.02 | 0.10 | 14.76 | b | ||||
2018 | 0.00 | d | 0.04 | f | 0.15 | d | 0.00 | g | 0.00 | g | 0.75 | d | 3.10 | e | 2.33 | c | 4.39 | d | 3.84 | 0.07 | f | 0.95 | 15.51 | d | ||
2019 | 0.00 | 0.01 | b | 1.19 | f | 1.82 | b | 3.92 | c | 0.22 | e | 2.05 | d | 0.69 | d | 1.05 | 0.00 | d | 3.67 | c | 0.60 | b | 14.03 | a | ||
2020 | 0.27 | b | 0.70 | 3.09 | a | 0.22 | c | 0.42 | e | 1.10 | f | 0.38 | b | 0.00 | 0.50 | b | 0.00 | 0.00 | c | 0.12 | 5.70 | a | ||||
2021 | 0.15 | g | 0.05 | c | 0.35 | 2.12 | b | 1.63 | a | 0.70 | b | 0.40 | a | 2.14 | 0.14 | a | 0.08 | c | 0.00 | e | 0.00 | c | 7.61 | a | ||
2022 | 0.04 | c | 0.14 | e | 0.00 | d | 0.00 | f | 0.00 | g | 1.30 | b | 0.00 | f | 2.14 | g | 0.00 | c | 1.00 | g | 0.82 | q | 0.10 | j | 1.48 | g |
2023 | 0.00 | s | 0.00 | n | 0.00 | r | 0.00 | p | 1.14 | b | 0.00 | i | 0.90 | r | 0.00 | q | 0.50 | q | 0.00 | s | 0.10 | q | 0.00 | q | 1.14 | k |
2024 | 0.00 | s | 0.25 | p | 0.25 | o | 0.60 | s | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.43 | 0.58 | 0.56 | 0.73 | 1.72 | 1.30 | 1.49 | 1.70 | 2.22 | 1.47 | 0.64 | 0.51 | 13.25 | |||||||||||||
S.D. | 0.47 | 0.59 | 0.74 | 0.82 | 1.66 | 1.08 | 1.52 | 1.37 | 2.20 | 1.61 | 0.90 | 0.68 | 4.48 | |||||||||||||
SKEW | 1.22 | 1.08 | 2.00 | 1.42 | 1.47 | 1.03 | 1.47 | 1.00 | 1.47 | 1.02 | 2.13 | 1.95 | 0.20 | |||||||||||||
MAX | 2.01 | 2.22 | 3.52 | 3.55 | 7.19 | 4.84 | 7.39 | 5.53 | 10.03 | 6.03 | 4.59 | 3.14 | 24.92 | |||||||||||||
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 | 4.58 | |||||||||||||
YRS | 68 | 66 | 69 | 68 | 68 | 69 | 69 | 67 | 69 | 70 | 68 | 71 | 53 |