YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.02 | 0.02 | k | |
1958 | 0.40 | 0.33 | 0.79 | 0.17 | 0.81 | 0.66 | 0.49 | 0.65 | 0.81 | 0.00 | 1.48 | 0.35 | 6.94 | |||||||||||||
1959 | 0.27 | 1.86 | 1.55 | 0.56 | 2.05 | 1.50 | 1.44 | 2.63 | 2.71 | 0.48 | 0.06 | 0.35 | 15.46 | |||||||||||||
1960 | 0.72 | 1.15 | 0.60 | 1.52 | 1.18 | 0.69 | 0.63 | 0.29 | 0.56 | 1.32 | 1.27 | 0.22 | 10.15 | |||||||||||||
1961 | 0.07 | 0.62 | 1.21 | 0.48 | 1.85 | 0.46 | 1.45 | 1.49 | 1.47 | 3.85 | 0.60 | 0.10 | 13.65 | |||||||||||||
1962 | 1.46 | 1.24 | 1.17 | 0.98 | 1.45 | 0.36 | 0.76 | 0.64 | 0.45 | 0.60 | 0.62 | 0.22 | 9.95 | |||||||||||||
1963 | 0.61 | 0.12 | 0.69 | 2.80 | 0.15 | 0.36 | 1.53 | 1.48 | 0.96 | 0.49 | 0.78 | 0.51 | 10.48 | |||||||||||||
1964 | 0.42 | 0.51 | 0.55 | 1.87 | 1.25 | 2.13 | 1.33 | 0.74 | 0.65 | 0.56 | 0.90 | 2.38 | 13.29 | |||||||||||||
1965 | 0.42 | 0.36 | 0.77 | 1.87 | 2.26 | ----- | z | 1.47 | 0.23 | 1.83 | 0.91 | 0.49 | 0.87 | 11.48 | a | |||||||||||
1966 | 0.18 | 0.33 | 0.20 | 0.94 | 0.24 | 1.22 | 2.19 | 1.07 | 0.77 | 1.68 | 0.47 | 0.97 | 10.26 | |||||||||||||
1967 | 0.41 | 0.08 | 1.22 | 1.28 | 3.48 | 2.03 | 0.85 | 0.34 | 1.00 | 0.44 | 0.22 | 1.53 | 12.88 | |||||||||||||
1968 | 0.11 | 1.09 | 0.54 | 3.06 | 1.52 | 1.44 | 0.48 | 1.54 | 0.60 | 0.53 | 0.58 | 1.46 | 12.95 | |||||||||||||
1969 | 0.57 | 1.28 | 0.44 | 1.40 | 0.27 | 2.59 | 0.87 | 0.57 | 0.80 | 2.15 | 0.30 | 0.26 | 11.50 | |||||||||||||
1970 | 0.12 | 1.17 | 1.13 | 1.51 | 1.63 | 3.73 | 1.47 | 1.91 | 2.14 | 1.08 | 0.85 | 0.69 | 17.43 | |||||||||||||
1971 | 0.64 | 0.28 | 0.30 | 1.98 | 3.78 | a | 0.13 | 0.15 | 0.13 | 1.36 | 4.44 | 0.80 | 0.58 | c | 14.57 | |||||||||||
1972 | 0.17 | 0.11 | 0.56 | 1.37 | 0.83 | 2.09 | 0.76 | 1.03 | 0.34 | a | 2.15 | 0.81 | 1.04 | 11.26 | ||||||||||||
1973 | 0.76 | 0.05 | 1.24 | 4.02 | 1.05 | 0.54 | 1.94 | 0.96 | 2.00 | 0.35 | 1.29 | 1.18 | 15.38 | |||||||||||||
1974 | 0.38 | 0.32 | 0.90 | 2.49 | 0.02 | 0.98 | 1.97 | 0.44 | 0.28 | 1.47 | 0.63 | 0.21 | 10.09 | |||||||||||||
1975 | 0.40 | 0.23 | 1.49 | 1.44 | 3.93 | 1.63 | a | 0.68 | 0.33 | 1.45 | 1.36 | a | 0.40 | 0.59 | a | 13.93 | ||||||||||
1976 | 0.23 | 0.80 | 0.65 | 1.78 | a | 2.41 | b | 0.97 | 0.69 | 0.86 | 0.92 | 0.19 | 0.03 | 0.16 | 9.69 | |||||||||||
1977 | 0.37 | 0.15 | 0.93 | 1.77 | 0.85 | 0.21 | 1.93 | 2.41 | 0.60 | 0.24 | 1.63 | a | 0.41 | 11.50 | ||||||||||||
1978 | 0.68 | 0.42 | 1.30 | 2.01 | 2.75 | 0.70 | 0.16 | 2.85 | a | 1.62 | 0.19 | a | 1.72 | f | 0.63 | 13.31 | a | |||||||||
1979 | 0.33 | 0.30 | 1.09 | 1.17 | 1.60 | 0.25 | 0.18 | 1.01 | 0.07 | 1.96 | 0.62 | a | 0.63 | 9.21 | ||||||||||||
1980 | 0.95 | a | 0.69 | 1.11 | 0.81 | 2.07 | a | 0.14 | 1.32 | 1.47 | 0.90 | 1.74 | 0.65 | 0.33 | 12.18 | |||||||||||
1981 | 0.25 | 0.28 | 1.68 | 1.00 | 3.36 | 0.79 | b | 0.92 | 0.49 | 1.18 | 2.49 | c | 0.49 | 0.60 | 13.53 | |||||||||||
1982 | 0.99 | 0.32 | 1.04 | 1.11 | b | 1.53 | 0.74 | 1.59 | a | 1.88 | a | 4.02 | a | 1.10 | c | 0.42 | 0.68 | c | 15.42 | |||||||
1983 | 0.30 | 0.33 | 2.51 | h | 1.24 | 2.36 | b | 2.91 | a | 0.52 | e | 2.59 | a | 1.50 | a | 0.81 | 2.61 | 1.37 | 16.54 | a | ||||||
1984 | 0.19 | 0.45 | 1.27 | 1.43 | 0.40 | 1.30 | 2.08 | 1.57 | 1.16 | 1.03 | 0.27 | 0.51 | 11.66 | |||||||||||||
1985 | 0.57 | 0.70 | 0.95 | 1.15 | 0.79 | 1.49 | 2.60 | 0.01 | 0.64 | 1.33 | 0.80 | 0.21 | 11.24 | |||||||||||||
1986 | 0.14 | 0.67 | 1.47 | 4.08 | 1.68 | 1.24 | 2.08 | 0.48 | 0.79 | 1.25 | 0.76 | 0.02 | 14.66 | |||||||||||||
1987 | 0.30 | a | 0.45 | b | 1.42 | a | 0.17 | 1.93 | c | 0.44 | 0.99 | b | 1.67 | c | 0.26 | 0.77 | b | 0.78 | a | 1.01 | c | 10.19 | ||||
1988 | 0.34 | c | 0.19 | 1.91 | b | 1.70 | a | 0.89 | b | 0.51 | b | 0.45 | b | 0.89 | b | 0.75 | a | 0.00 | 1.33 | b | 0.58 | 9.54 | ||||
1989 | 0.27 | 1.21 | d | 0.90 | c | 0.74 | c | 0.71 | c | 0.84 | 0.51 | 2.10 | 1.02 | a | 0.41 | 0.50 | 0.42 | 9.63 | ||||||||
1990 | 0.35 | 0.96 | 1.58 | 1.37 | 0.36 | 2.82 | 1.95 | 0.54 | 0.43 | 0.51 | 0.49 | 0.73 | 12.09 | |||||||||||||
1991 | 0.51 | 0.18 | 0.59 | 2.34 | 1.81 | 1.37 | 0.62 | 1.18 | 1.73 | 1.82 | b | 1.76 | 0.14 | 14.05 | ||||||||||||
1992 | 0.55 | 0.23 | 1.06 | 0.81 | 1.79 | 0.67 | 1.00 | 0.63 | 0.73 | 0.69 | 1.32 | 0.24 | 9.72 | |||||||||||||
1993 | 1.00 | 0.59 | 1.80 | 0.87 | 2.36 | 1.13 | 1.02 | 1.29 | 0.40 | 2.48 | a | 0.57 | 0.54 | 14.05 | ||||||||||||
1994 | 0.70 | 1.37 | 0.55 | 0.80 | 0.60 | 0.30 | 0.58 | 0.38 | 0.30 | 4.84 | 1.59 | 0.40 | 12.41 | |||||||||||||
1995 | 0.48 | 0.80 | 0.81 | 1.21 | 4.20 | 0.62 | 0.64 | ----- | z | 1.63 | 0.58 | 0.23 | 0.17 | 11.37 | a | |||||||||||
1996 | 0.92 | 0.67 | 1.07 | 1.17 | 3.02 | 0.45 | 0.62 | 1.51 | 1.63 | 1.67 | 0.66 | 0.67 | 14.06 | |||||||||||||
1997 | 1.21 | 1.08 | 0.23 | 2.60 | 1.02 | 2.93 | 0.56 | 3.64 | 2.16 | 1.44 | 0.57 | 0.31 | 17.75 | |||||||||||||
1998 | 0.38 | 0.86 | 1.68 | 1.49 | 0.73 | 3.23 | 1.45 | 1.11 | 0.56 | 1.79 | 0.40 | 2.42 | 16.10 | |||||||||||||
1999 | 0.45 | 0.80 | 0.33 | 3.50 | b | 2.48 | b | 0.60 | 0.76 | b | 1.47 | c | 1.56 | 0.33 | 0.37 | 0.83 | 13.48 | |||||||||
2000 | 0.51 | 1.03 | 1.30 | 1.33 | 0.43 | a | 0.49 | 1.63 | 0.69 | 1.60 | 2.53 | 0.15 | a | 0.00 | b | 11.69 | ||||||||||
2001 | 0.55 | 0.80 | 0.40 | a | 1.08 | a | 0.41 | 0.21 | 0.56 | 2.91 | 0.15 | 0.43 | 0.72 | 0.34 | 8.56 | |||||||||||
2002 | 0.18 | 0.12 | a | 0.92 | b | 0.39 | 0.32 | 0.19 | 1.69 | 0.51 | 1.70 | 1.34 | 0.16 | 0.09 | 7.61 | |||||||||||
2003 | 0.18 | 0.89 | a | 1.52 | 0.41 | 0.63 | 2.22 | a | 0.05 | 1.39 | 0.88 | 0.00 | a | 0.25 | h | 0.99 | 9.16 | a | ||||||||
2004 | 0.00 | b | 1.03 | ----- | z | 1.67 | 0.76 | 1.65 | 0.37 | 0.84 | 1.75 | 2.23 | 0.15 | 0.07 | 10.52 | a | ||||||||||
2005 | 0.19 | 0.41 | 0.87 | 2.14 | 1.01 | 1.63 | 0.11 | 1.42 | 1.17 | 1.80 | 0.63 | 0.13 | 11.51 | |||||||||||||
2006 | 0.32 | 0.12 | 1.05 | 0.68 | n | 0.75 | 0.03 | 0.07 | 0.81 | 1.78 | 1.93 | 0.27 | 0.78 | 7.91 | a | |||||||||||
2007 | 0.43 | 0.50 | 0.11 | 0.14 | 2.88 | 0.10 | 0.03 | 3.34 | 1.71 | 1.67 | 0.00 | 0.16 | 11.07 | |||||||||||||
2008 | 0.39 | 0.48 | c | 0.76 | 0.05 | 0.81 | 0.31 | 0.34 | 0.39 | 2.75 | 0.38 | 0.15 | 0.76 | 7.57 | ||||||||||||
2009 | 0.38 | 0.18 | 0.99 | 1.08 | 0.23 | 3.04 | 0.41 | 0.54 | 1.42 | 0.72 | 0.33 | 0.12 | 9.44 | |||||||||||||
2010 | 0.05 | 0.18 | b | 1.35 | b | 1.58 | 0.89 | d | 1.05 | b | 1.25 | 1.66 | 0.09 | 1.59 | 0.48 | 1.02 | 11.19 | |||||||||
2011 | 0.08 | e | 0.32 | 0.28 | f | 1.01 | 1.19 | s | 0.42 | b | 1.09 | k | 1.14 | i | 0.19 | k | 0.79 | g | 0.47 | b | 0.05 | b | 2.35 | f | ||
2012 | 0.14 | b | 0.56 | b | 0.21 | 0.39 | d | 0.08 | 0.00 | 0.00 | p | 0.25 | d | 1.27 | f | 0.61 | c | 0.53 | 0.60 | k | 2.77 | c | ||||
2013 | 0.37 | b | 0.24 | h | 0.58 | p | 2.02 | l | 1.70 | l | 0.00 | 1.43 | m | 0.69 | v | 2.61 | m | 2.93 | q | 0.39 | t | 0.33 | t | 0.37 | j | |
2014 | 0.20 | x | 0.19 | s | 0.52 | s | 0.72 | m | 1.15 | o | 0.56 | r | 1.24 | p | 3.01 | l | 1.81 | p | 0.06 | r | ----- | z | 0.20 | y | 0.00 | l |
2015 | ----- | z | 0.19 | f | 0.32 | r | 1.55 | p | 3.23 | y | 0.88 | x | 1.61 | p | 1.22 | y | 1.10 | s | 0.40 | s | 1.36 | r | ----- | z | 0.00 | l |
2016 | 0.32 | u | 0.54 | a | 0.51 | s | 0.75 | d | 3.76 | p | 0.04 | g | 1.09 | e | 0.21 | 3.17 | b | 0.91 | 0.58 | j | 0.06 | l | 6.67 | f | ||
2017 | 0.55 | i | 1.02 | d | 2.07 | d | 1.08 | a | 0.83 | 0.57 | 4.17 | 0.89 | 2.22 | c | 0.37 | 0.36 | d | 0.21 | 13.79 | a | ||||||
2018 | 0.42 | a | 0.65 | 0.76 | 0.89 | 0.38 | 0.09 | 0.03 | h | 0.91 | 0.00 | 2.15 | b | 0.14 | ----- | z | 6.39 | b | ||||||||
2019 | 1.03 | 0.53 | b | 0.33 | 1.28 | a | 2.10 | h | 0.72 | a | 0.44 | 0.08 | 1.76 | 0.71 | 0.72 | 1.10 | 8.70 | a | ||||||||
2020 | 0.64 | 0.28 | 1.17 | 0.47 | 0.67 | 1.65 | 0.41 | 0.15 | 0.37 | 0.40 | k | 0.44 | m | 0.45 | S | 5.81 | c | |||||||||
2021 | 0.66 | l | 0.23 | i | 1.61 | i | 1.03 | S | 0.69 | l | 0.25 | h | 1.03 | S | 1.62 | e | 0.81 | 1.53 | 0.32 | 1.18 | b | 5.46 | g | |||
2022 | 0.27 | 0.65 | 2.11 | c | 0.89 | 2.69 | a | 2.36 | 0.83 | b | 0.29 | 1.27 | 0.71 | b | 1.08 | 0.80 | 13.95 | |||||||||
2023 | 1.78 | a | 1.00 | 1.45 | d | 2.00 | 0.33 | 2.13 | d | 1.24 | 0.97 | e | 0.95 | b | 1.26 | 0.50 | 0.43 | b | 14.04 | |||||||
2024 | 0.64 | b | 1.08 | 1.75 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.72 | j | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.47 | 0.60 | 1.00 | 1.39 | 1.42 | 1.12 | 1.02 | 1.12 | 1.19 | 1.25 | 0.65 | 0.60 | 12.06 | |||||||||||||
S.D. | 0.34 | 0.40 | 0.49 | 0.87 | 1.07 | 0.94 | 0.76 | 0.84 | 0.80 | 1.00 | 0.49 | 0.51 | 2.52 | |||||||||||||
SKEW | 1.56 | 0.73 | 0.20 | 1.16 | 0.85 | 0.93 | 1.43 | 1.07 | 1.04 | 1.50 | 1.59 | 1.57 | 0.15 | |||||||||||||
MAX | 1.78 | 1.86 | 2.11 | 4.08 | 4.20 | 3.73 | 4.17 | 3.64 | 4.02 | 4.84 | 2.61 | 2.42 | 17.75 | |||||||||||||
MIN | 0.00 | 0.05 | 0.11 | 0.05 | 0.02 | 0.00 | 0.03 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 6.94 | |||||||||||||
YRS | 62 | 63 | 58 | 61 | 59 | 61 | 59 | 61 | 61 | 61 | 59 | 60 | 48 |