YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1945 | 0.00 | 0.35 | 0.40 | a | 0.00 | 0.39 | 2.97 | 3.38 | 6.35 | 2.46 | 1.05 | 0.73 | 0.19 | 18.27 | ||||||||||||
1946 | 0.45 | 0.35 | 1.35 | 0.24 | 0.78 | 1.22 | 2.15 | 1.64 | 1.76 | 1.36 | 0.49 | a | 0.54 | 12.33 | ||||||||||||
1947 | 1.02 | 0.22 | 0.52 | 0.12 | 0.74 | 2.27 | 3.30 | 2.13 | 2.83 | 0.47 | 0.73 | 0.80 | 15.15 | |||||||||||||
1948 | 0.55 | 0.45 | 0.66 | 1.11 | 0.72 | 1.35 | 3.76 | 4.78 | 0.88 | 1.15 | 0.32 | 0.94 | 16.67 | |||||||||||||
1949 | 1.30 | 1.06 | 0.35 | 0.08 | 0.45 | 1.38 | 1.16 | 1.08 | 0.35 | 0.60 | 0.16 | 0.85 | 8.82 | |||||||||||||
1950 | 0.90 | 0.03 | 0.08 | 0.03 | 0.34 | 0.37 | 0.65 | 1.31 | 0.22 | 0.27 | 0.52 | 0.15 | 4.87 | |||||||||||||
1951 | 0.20 | 1.45 | 0.51 | 0.44 | 0.00 | 0.95 | 1.17 | 4.93 | 0.39 | 0.41 | 0.88 | 0.63 | 11.96 | |||||||||||||
1952 | 0.97 | 0.37 | 0.46 | 0.31 | 0.53 | 0.93 | 1.02 | 0.82 | 1.93 | 0.48 | 0.55 | 0.09 | 8.46 | |||||||||||||
1953 | 0.19 | 0.69 | 0.07 | 0.01 | 1.18 | 1.70 | 2.81 | 4.28 | 1.12 | 0.52 | 0.05 | 0.36 | 12.98 | |||||||||||||
1954 | 0.80 | 0.25 | 0.78 | 0.10 | 0.15 | 1.33 | 2.42 | 1.79 | 1.83 | 0.22 | 0.66 | 0.77 | 11.10 | |||||||||||||
1955 | 0.89 | 0.77 | 0.76 | 0.44 | 0.75 | 2.34 | 3.03 | 2.42 | 0.82 | 0.89 | 0.40 | 0.89 | 14.40 | |||||||||||||
1956 | 0.48 | 0.91 | 0.33 | 0.21 | 1.70 | 0.96 | 1.43 | 3.09 | 1.57 | 1.08 | 0.87 | 0.22 | 12.85 | |||||||||||||
1957 | 1.82 | 0.58 | 0.10 | 0.10 | 0.86 | 1.06 | 1.83 | 1.34 | 0.99 | 0.24 | 0.56 | 0.27 | 9.75 | |||||||||||||
1958 | 0.31 | 0.10 | 0.27 | 0.13 | 0.54 | 2.16 | 2.02 | 1.58 | 0.76 | 0.47 | 0.53 | 0.39 | 9.26 | |||||||||||||
1959 | 0.08 | 1.03 | 0.25 | 0.29 | 0.71 | 1.66 | 2.32 | 3.09 | 1.32 | 0.61 | 0.62 | 0.56 | 12.54 | |||||||||||||
1960 | 0.80 | 0.18 | 0.07 | 0.44 | 1.04 | 1.80 | 3.43 | 4.70 | 2.99 | 0.47 | 0.63 | 0.29 | 16.84 | |||||||||||||
1961 | 0.08 | 0.35 | 0.26 | 1.42 | 2.78 | 2.06 | 1.96 | 5.93 | 2.05 | 0.99 | 0.55 | 1.53 | 19.96 | |||||||||||||
1962 | 0.91 | 0.68 | 0.48 | 0.62 | 0.68 | 2.27 | 3.31 | 6.17 | 1.37 | 0.69 | 0.15 | 1.20 | 18.53 | |||||||||||||
1963 | 1.96 | 0.12 | 1.22 | 1.23 | 0.52 | 3.21 | 2.84 | 3.60 | 0.70 | 2.10 | 0.08 | 0.60 | 18.18 | |||||||||||||
1964 | 0.25 | 0.50 | 0.60 | 1.46 | 0.68 | 3.10 | 2.90 | 1.57 | 0.85 | 1.22 | 1.11 | 0.85 | 15.09 | |||||||||||||
1965 | 0.40 | 0.51 | 0.57 | 0.21 | 0.59 | 1.79 | 1.61 | 2.88 | 2.55 | 0.83 | 0.62 | 0.56 | 13.12 | |||||||||||||
1966 | 0.56 | 0.89 | 0.33 | 0.22 | ----- | z | 1.08 | 1.15 | 0.91 | 0.90 | 0.61 | 1.27 | 0.12 | 8.04 | a | |||||||||||
1967 | 0.26 | 0.22 | 1.13 | 1.00 | 0.55 | 2.07 | 5.69 | ----- | z | 0.33 | 0.08 | c | 1.15 | 0.83 | 13.31 | a | ||||||||||
1968 | 0.54 | a | 0.04 | a | 0.18 | 0.24 | 0.34 | 0.79 | 0.50 | 1.35 | ----- | z | 0.28 | 0.17 | 0.58 | 5.01 | a | |||||||||
1969 | 0.48 | b | 0.20 | 0.23 | b | 0.05 | b | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.96 | h | |
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1975 | ----- | z | 0.00 | h | 0.22 | 0.38 | f | 2.42 | 0.96 | 2.47 | 1.95 | 0.90 | 0.69 | 0.24 | 0.30 | 10.15 | c | |||||||||
1976 | 0.29 | 0.27 | 0.66 | 0.03 | 1.65 | 1.47 | 2.25 | 1.02 | e | 0.44 | k | 0.38 | k | 0.34 | 0.15 | 8.13 | b | |||||||||
1977 | 0.36 | 0.30 | 0.10 | 1.13 | e | 0.81 | 2.22 | 1.29 | 2.50 | a | 3.07 | 0.46 | 0.20 | 0.06 | r | 12.44 | a | |||||||||
1978 | 0.17 | 0.49 | 0.35 | 0.00 | ----- | z | 2.71 | 2.87 | 2.77 | c | 0.73 | 0.38 | 0.64 | f | 0.75 | h | 10.47 | c | ||||||||
1979 | 0.23 | f | 0.00 | 0.00 | o | 0.02 | t | 0.26 | i | 1.38 | 2.69 | u | 0.58 | h | 1.40 | 0.06 | l | 0.51 | f | 0.53 | 3.31 | h | ||||
1980 | 0.38 | l | 0.00 | 0.06 | 0.00 | 0.93 | 2.42 | 2.59 | c | 1.41 | 1.06 | g | 0.30 | r | 0.40 | h | ----- | z | 7.41 | e | ||||||
1981 | 0.00 | h | ----- | z | 0.00 | d | 0.29 | 0.31 | 2.31 | 3.90 | 2.40 | 1.79 | 1.49 | 0.69 | ----- | z | 13.18 | c | ||||||||
1982 | 0.46 | a | 0.27 | 0.31 | 0.47 | a | 4.53 | 1.59 | 2.79 | 4.02 | 1.35 | c | 1.02 | 0.61 | a | 0.67 | 18.09 | |||||||||
1983 | 0.20 | 0.05 | a | 0.07 | 0.27 | 1.25 | a | 0.40 | 2.04 | 3.73 | 1.26 | 2.27 | a | 0.21 | b | 0.15 | a | 11.90 | ||||||||
1984 | 0.94 | 0.38 | 0.07 | 0.10 | 0.79 | 3.42 | 3.21 | 2.74 | 0.33 | 1.55 | 0.17 | 1.53 | 15.23 | |||||||||||||
1985 | 0.47 | 0.77 | 0.60 | 0.15 | 0.26 | 1.40 | 0.69 | 2.16 | 2.44 | 0.56 | a | 1.04 | 0.01 | a | 10.55 | |||||||||||
1986 | 0.18 | 0.14 | 0.00 | 0.02 | 0.12 | 4.13 | 3.29 | 2.46 | 1.61 | 2.15 | e | 0.00 | g | 0.00 | e | 14.10 | a | |||||||||
1987 | 0.31 | 0.05 | 0.00 | b | 0.31 | 0.00 | 1.20 | 1.03 | j | ----- | z | ----- | z | ----- | z | 0.38 | f | 0.30 | 2.17 | e | ||||||
1988 | 0.24 | 0.42 | 0.00 | 0.21 | 2.10 | 3.63 | 1.03 | c | 2.08 | a | 0.30 | 1.10 | 0.71 | 0.26 | 12.08 | |||||||||||
1989 | 0.58 | 0.62 | 0.04 | 0.61 | 0.75 | 2.47 | 2.71 | 1.50 | 0.88 | 1.38 | 0.94 | 0.64 | 13.12 | |||||||||||||
1990 | 0.22 | ----- | z | 0.08 | m | 0.39 | 0.23 | f | 1.02 | d | 1.59 | f | 1.81 | k | 1.46 | h | 0.40 | 1.30 | a | 2.53 | a | 5.86 | f | |||
1991 | 0.17 | n | ----- | z | 1.68 | b | 0.00 | g | 0.07 | f | 0.21 | g | 2.19 | 1.39 | i | 0.74 | 0.57 | d | ----- | z | 0.34 | a | 5.52 | g | ||
1992 | 0.18 | r | 0.15 | t | 0.00 | 0.03 | i | 0.11 | e | 1.06 | r | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.11 | j | |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.73 | a | 0.73 | k |
1997 | 0.19 | c | 0.58 | 0.11 | 0.25 | 0.64 | h | 2.58 | 2.46 | i | 3.98 | 0.52 | 0.93 | 0.44 | l | 0.84 | c | 9.98 | c | |||||||
1998 | 0.19 | 0.22 | 0.05 | 0.11 | c | 1.06 | r | 1.66 | 7.64 | 4.00 | 2.15 | g | 0.01 | 0.18 | l | 0.21 | l | 13.88 | d | |||||||
1999 | 0.55 | a | 0.09 | 0.29 | 0.15 | p | 0.42 | b | 3.85 | b | 4.40 | ----- | z | 1.87 | 0.49 | f | ----- | z | 1.99 | 13.46 | d | |||||
2000 | 2.01 | 0.28 | 0.14 | ----- | z | 0.67 | 0.40 | 2.58 | d | ----- | z | 2.48 | 0.82 | 0.60 | t | 0.00 | 9.38 | c | ||||||||
2001 | 0.44 | y | 0.72 | 0.37 | 0.00 | 0.65 | 1.28 | 3.23 | 2.21 | 0.38 | 1.39 | 0.18 | 0.06 | c | 10.47 | a | ||||||||||
2002 | 0.29 | e | 0.08 | a | 0.25 | 1.03 | a | ----- | z | 0.98 | 1.39 | 2.31 | 1.44 | 0.84 | 0.03 | 0.38 | 9.02 | a | ||||||||
2003 | 0.17 | 0.08 | c | 0.05 | 0.00 | 0.09 | 1.05 | 5.01 | 2.37 | 1.56 | 0.18 | 1.42 | 0.32 | 12.30 | ||||||||||||
2004 | 0.16 | i | 0.06 | 0.09 | 0.47 | ----- | z | ----- | z | 4.14 | a | 0.67 | 1.76 | 1.62 | 0.98 | j | 0.91 | 9.72 | d | |||||||
2005 | 0.76 | a | 0.03 | k | ----- | z | ----- | z | 1.43 | g | 2.44 | b | ----- | z | ----- | z | 4.11 | a | 1.02 | 0.70 | ----- | z | 9.03 | g | ||
2006 | 0.84 | p | 0.71 | a | 0.17 | c | 0.33 | c | ----- | z | 1.79 | c | ----- | z | 6.47 | 1.39 | 1.03 | 0.23 | q | 0.54 | 12.43 | d | ||||
2007 | 0.43 | 0.13 | e | 0.06 | 0.00 | e | 1.24 | 0.99 | e | 3.54 | a | 3.90 | b | ----- | z | 0.90 | l | 1.10 | 0.53 | a | 11.92 | b | ||||
2008 | 1.19 | 0.24 | 0.39 | j | 1.13 | ----- | z | ----- | z | 2.28 | 1.95 | 1.01 | 0.68 | o | 0.19 | i | 0.47 | 8.27 | e | |||||||
2009 | 1.08 | 0.99 | 1.02 | c | 0.13 | b | 0.61 | a | 3.15 | 0.14 | c | 3.52 | e | 0.90 | 0.33 | f | 0.09 | v | 0.77 | 12.31 | b | |||||
2010 | 0.11 | 0.03 | 0.20 | g | 0.11 | 0.34 | 3.91 | 4.05 | 3.00 | b | 0.43 | i | 0.28 | 2.45 | b | 0.46 | a | 14.74 | b | |||||||
2011 | 0.68 | b | 1.54 | a | ----- | z | 0.18 | i | 0.36 | 1.91 | 1.83 | a | 2.33 | j | 0.29 | l | 0.29 | 1.04 | 0.77 | 8.42 | d | |||||
2012 | 0.69 | 0.61 | c | 0.24 | 0.17 | 1.13 | 2.95 | 2.75 | 3.51 | f | 1.82 | 1.43 | 0.32 | 0.66 | 12.77 | a | ||||||||||
2013 | 0.81 | i | 0.60 | d | 0.31 | 0.64 | 0.35 | 0.36 | 2.40 | c | ----- | z | ----- | z | 2.27 | 0.96 | 0.64 | 8.53 | c | |||||||
2014 | 0.31 | b | 0.16 | 0.25 | i | 0.16 | l | 0.22 | k | 5.23 | 2.64 | 3.42 | 1.34 | 0.38 | 0.34 | b | 1.02 | 14.84 | c | |||||||
2015 | 0.07 | b | 0.00 | q | 0.56 | 0.05 | a | 0.96 | 1.64 | 3.62 | 1.99 | 3.38 | 0.41 | 2.41 | 0.16 | 15.25 | a | |||||||||
2016 | 0.11 | j | 0.00 | 0.69 | 1.10 | b | 0.61 | 3.04 | 7.26 | 2.54 | 2.50 | b | 0.33 | 0.12 | 0.80 | 18.99 | a | |||||||||
2017 | 0.81 | p | 0.62 | d | 0.09 | 0.00 | m | 0.87 | 1.36 | 1.98 | 2.59 | a | 1.34 | 1.29 | b | 1.24 | p | 0.35 | 10.49 | c | ||||||
2018 | 0.15 | 1.29 | c | 1.03 | g | 0.24 | 0.67 | c | 1.61 | 1.53 | 5.75 | 1.74 | 1.49 | 0.93 | 0.69 | f | 15.40 | b | ||||||||
2019 | 0.19 | 0.75 | 0.18 | 0.60 | 0.50 | g | 2.61 | 2.06 | 2.53 | 2.05 | 1.94 | 2.63 | 0.52 | a | 16.06 | a | ||||||||||
2020 | 0.31 | 0.80 | o | 1.25 | b | 0.91 | 0.10 | 3.88 | a | 3.72 | a | 2.98 | b | 1.70 | a | 0.94 | 1.12 | 0.53 | 17.44 | a | ||||||
2021 | 0.04 | a | 1.67 | f | 0.86 | b | 0.74 | 0.25 | a | 1.30 | a | 0.78 | 3.49 | b | 0.86 | 0.95 | 0.57 | b | 2.65 | 12.49 | a | |||||
2022 | 0.16 | 1.97 | q | 0.20 | h | 0.11 | g | 0.26 | c | 0.00 | 2.99 | 2.69 | a | 2.38 | 1.96 | c | 0.82 | 1.64 | 12.90 | c | ||||||
2023 | 0.57 | 0.95 | q | 0.46 | b | 0.51 | b | 0.86 | 1.64 | 1.54 | 1.47 | b | 1.49 | 0.65 | a | 0.88 | 0.28 | 10.35 | a | |||||||
2024 | 0.37 | 0.19 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.56 | j | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.53 | 0.43 | 0.38 | 0.39 | 0.79 | 1.93 | 2.62 | 2.85 | 1.48 | 0.89 | 0.72 | 0.64 | 13.37 | |||||||||||||
S.D. | 0.45 | 0.37 | 0.38 | 0.40 | 0.76 | 1.05 | 1.43 | 1.46 | 0.85 | 0.58 | 0.57 | 0.54 | 3.56 | |||||||||||||
SKEW | 1.60 | 1.04 | 1.42 | 1.18 | 2.75 | 0.73 | 1.21 | 0.85 | 0.77 | 0.76 | 1.63 | 1.86 | -0.11 | |||||||||||||
MAX | 2.01 | 1.54 | 1.68 | 1.46 | 4.53 | 5.23 | 7.64 | 6.47 | 4.11 | 2.27 | 2.63 | 2.65 | 19.96 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.14 | 0.67 | 0.22 | 0.01 | 0.03 | 0.00 | 4.87 | |||||||||||||
YRS | 59 | 60 | 61 | 59 | 55 | 65 | 62 | 57 | 58 | 60 | 53 | 62 | 28 |