YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | ----- | z | |
1951 | 0.00 | 0.19 | 0.16 | 0.09 | 1.22 | 0.18 | 0.79 | 2.02 | 0.00 | 0.49 | 0.05 | 0.33 | 2.02 | |||||||||||||
1952 | 0.09 | 0.17 | 0.08 | 0.39 | 0.15 | 0.13 | 0.88 | 0.76 | 0.73 | 0.00 | 0.18 | 0.03 | 0.88 | |||||||||||||
1953 | 0.12 | 0.10 | 0.12 | 0.62 | 0.37 | 0.25 | 1.57 | 0.43 | 0.86 | 0.20 | 0.16 | 0.10 | 1.57 | |||||||||||||
1954 | 0.08 | 0.00 | 0.00 | 0.10 | 1.33 | 0.00 | 0.10 | 0.59 | 0.13 | 3.93 | 0.00 | 0.05 | 3.93 | |||||||||||||
1955 | 0.18 | 0.00 | 0.02 | 0.33 | 0.70 | 0.34 | 1.07 | 0.54 | 4.11 | b | 1.25 | 0.00 | 0.00 | 4.11 | b | |||||||||||
1956 | 0.02 | 1.30 | b | 0.00 | 0.00 | 0.15 | 0.00 | 0.29 | 0.27 | 0.00 | 0.54 | 0.00 | 0.00 | 1.30 | b | |||||||||||
1957 | 0.09 | 0.32 | 0.81 | 0.02 | 0.12 | 0.23 | 0.17 | a | 0.41 | 0.00 | 0.89 | 0.43 | 0.00 | 0.89 | a | |||||||||||
1958 | 0.62 | 0.46 | 1.13 | 0.53 | 0.34 | 0.03 | 0.17 | 0.83 | 1.80 | 0.60 | 0.25 | 0.02 | 1.80 | |||||||||||||
1959 | 0.00 | 0.00 | 0.00 | 0.57 | 1.01 | a | 1.40 | 1.30 | 0.65 | 0.18 | 0.12 | 0.00 | 0.45 | 1.40 | a | |||||||||||
1960 | 0.31 | 0.12 | 0.02 | 0.00 | 0.47 | 0.40 | 2.46 | 0.38 | 0.45 | 3.53 | 0.00 | 0.71 | 3.53 | |||||||||||||
1961 | 0.32 | 0.05 | 0.55 | 0.11 | 0.15 | 0.33 | 0.47 | 0.32 | 0.92 | 0.50 | 0.78 | 0.15 | 0.92 | |||||||||||||
1962 | 0.34 | 0.44 | 0.12 | 0.12 | 0.18 | 0.65 | 1.10 | 0.41 | 1.75 | 0.32 | 0.15 | 0.19 | 1.75 | |||||||||||||
1963 | 0.17 | 0.30 | 0.00 | 0.10 | 1.21 | 0.56 | 0.03 | 1.29 | 1.40 | 0.00 | 0.24 | 0.02 | 1.40 | |||||||||||||
1964 | 0.49 | 0.45 | 0.03 | 0.00 | 0.63 | 0.67 | 0.11 | 0.11 | 0.77 | 0.00 | 0.15 | 0.04 | 0.77 | |||||||||||||
1965 | 0.13 | 0.22 | 0.06 | 0.95 | 0.26 | 0.73 | 2.03 | 0.60 | 0.75 | 0.00 | 0.28 | 0.14 | 2.03 | |||||||||||||
1966 | 0.28 | 0.00 | 0.45 | 1.40 | 1.05 | 0.37 | 0.33 | 2.04 | 0.55 | 0.00 | 0.00 | 0.00 | 2.04 | |||||||||||||
1967 | 0.00 | 0.04 | 0.03 | 0.00 | 0.15 | 3.00 | 0.72 | 2.02 | 0.36 | 0.00 | 0.08 | 0.85 | 3.00 | |||||||||||||
1968 | 0.95 | 0.62 | 0.78 | 0.01 | 0.61 | 0.43 | 2.96 | 0.98 | 0.00 | 0.24 | 0.26 | 0.20 | 2.96 | |||||||||||||
1969 | 0.00 | 0.25 | 0.20 | 0.48 | 0.23 | 0.25 | 0.68 | 0.30 | 2.30 | 1.18 | 0.03 | 0.97 | 2.30 | |||||||||||||
1970 | 0.00 | 0.09 | 0.15 | 0.00 | 0.25 | 0.63 | 0.51 | 0.28 | 0.46 | 0.22 | 0.05 | 0.23 | 0.63 | |||||||||||||
1971 | 0.02 | 0.20 | 0.01 | 0.27 | 0.18 | 0.05 | 1.70 | 2.50 | 0.90 | 0.36 | 0.53 | 0.20 | 2.50 | |||||||||||||
1972 | 0.10 | 0.00 | 0.00 | 0.00 | 0.45 | 0.58 | 0.32 | 2.17 | 1.28 | 0.33 | 0.30 | 0.40 | 2.17 | |||||||||||||
1973 | 0.67 | 1.04 | 1.35 | 0.25 | 0.38 | 0.41 | 0.85 | 0.03 | 0.53 | 0.28 | 0.04 | 0.00 | 1.35 | |||||||||||||
1974 | 0.15 | 0.10 | 0.43 | 0.17 | 0.48 | 0.19 | 0.15 | 2.05 | 1.02 | 1.30 | 0.10 | 0.26 | 2.05 | |||||||||||||
1975 | 0.13 | 0.52 | 0.19 | 0.47 | 0.13 | 1.20 | 1.14 | 0.08 | 0.74 | 0.12 | 0.03 | 0.05 | 1.20 | |||||||||||||
1976 | 0.08 | 0.28 | 0.14 | 0.32 | 0.59 | 0.55 | 1.43 | 0.14 | 0.58 | 0.83 | 0.45 | 0.00 | 1.43 | |||||||||||||
1977 | 0.06 | 0.27 | 0.37 | 0.52 | 0.69 | 0.04 | 0.37 | 2.80 | 0.81 | 0.50 | 0.46 | 0.00 | 2.80 | |||||||||||||
1978 | 0.42 | 0.34 | 0.00 | 0.05 | 0.66 | 2.00 | 1.13 | 1.43 | 0.84 | 1.11 | 0.47 | 0.31 | 2.00 | |||||||||||||
1979 | 0.40 | 0.30 | 0.07 | 0.21 | 1.04 | 0.64 | 0.95 | 0.58 | 0.22 | 0.22 | 0.00 | 0.55 | 1.04 | |||||||||||||
1980 | 0.88 | 0.30 | 0.00 | 0.48 | 0.40 | 0.05 | 0.27 | 0.88 | 1.25 | 0.02 | 0.67 | 0.14 | 1.25 | |||||||||||||
1981 | 0.29 | 0.21 | 0.20 | 0.50 | 1.40 | 1.63 | 2.25 | 1.67 | 0.80 | 0.74 | 0.30 | 0.20 | 2.25 | |||||||||||||
1982 | 0.70 | c | 0.10 | ----- | z | 0.00 | 0.44 | 0.55 | 0.26 | a | 1.00 | 0.65 | 1.46 | 0.72 | 0.35 | ----- | z | |||||||||
1983 | 0.31 | 0.16 | 0.08 | 0.30 | 0.04 | 0.19 | a | 0.13 | b | 0.53 | 0.83 | 2.55 | 0.95 | 0.20 | 2.55 | c | ||||||||||
1984 | 0.04 | 0.03 | 0.15 | 0.18 | 1.10 | d | 1.81 | a | 1.10 | 1.73 | e | 0.73 | 1.24 | 1.45 | a | 0.65 | 1.81 | k | ||||||||
1985 | 0.15 | b | 0.10 | 0.61 | 1.26 | 0.25 | a | 1.82 | b | 1.63 | b | 0.22 | 0.66 | 0.37 | c | 0.08 | c | 0.00 | c | 1.82 | p | |||||
1986 | 0.54 | 0.27 | 0.05 | c | 0.10 | 0.91 | 1.67 | 1.84 | 1.66 | c | 1.15 | b | 1.25 | b | 0.90 | b | 0.58 | 1.84 | l | |||||||
1987 | 0.21 | 0.91 | b | 0.15 | 0.18 | 1.15 | 1.70 | 0.19 | a | 1.66 | 0.31 | 0.30 | 0.48 | 0.39 | 1.70 | c | ||||||||||
1988 | 0.05 | c | 1.43 | 0.00 | 0.13 | 0.67 | 0.72 | 1.22 | e | 0.24 | 0.95 | l | 0.04 | 0.01 | c | 0.28 | b | 1.43 | y | |||||||
1989 | 0.32 | a | 0.25 | 0.21 | 0.00 | 0.21 | 1.89 | d | 1.38 | a | 2.00 | 0.52 | 0.09 | 0.00 | 0.03 | 2.00 | f | |||||||||
1990 | 0.67 | 0.14 | 0.43 | 0.50 | 0.20 | 0.01 | 0.30 | 1.10 | 1.04 | 0.24 | 0.33 | 0.20 | b | 1.10 | b | |||||||||||
1991 | 0.10 | 0.32 | 0.08 | 0.01 | 0.30 | 0.12 | 4.72 | a | 0.60 | 0.83 | 0.19 | 1.24 | 0.57 | a | 4.72 | b | ||||||||||
1992 | 0.30 | 0.19 | 0.11 | 0.23 | 3.14 | 0.23 | 0.52 | 0.24 | 0.61 | 0.30 | 0.15 | 0.45 | 3.14 | |||||||||||||
1993 | 0.47 | 0.06 | d | 0.22 | 0.36 | 0.23 | 0.50 | 1.42 | 2.54 | 1.05 | 0.11 | 0.18 | 0.13 | 2.54 | d | |||||||||||
1994 | 0.02 | 0.00 | 0.23 | 0.21 | 0.51 | 0.00 | 0.23 | 1.02 | 0.42 | 0.90 | h | 0.37 | 0.00 | b | 1.02 | j | ||||||||||
1995 | 0.16 | e | 0.28 | b | 0.06 | 0.22 | 0.05 | 0.51 | 0.08 | 0.41 | 1.22 | b | 0.00 | 0.16 | 0.10 | a | 1.22 | j | ||||||||
1996 | 0.00 | 0.00 | 0.03 | 0.10 | 0.00 | 0.95 | 0.74 | 1.68 | 0.56 | c | 0.27 | 0.18 | b | 0.09 | 1.68 | e | ||||||||||
1997 | 0.50 | j | 0.45 | a | 0.00 | k | 1.53 | 0.97 | a | 1.29 | 0.88 | 0.70 | f | 0.93 | 0.62 | 0.70 | d | 0.90 | a | ----- | z | |||||
1998 | 0.02 | 0.12 | 0.35 | 0.00 | 0.00 | 0.22 | c | 0.50 | 0.44 | 0.27 | 1.75 | 0.29 | 0.58 | 1.75 | c | |||||||||||
1999 | 0.85 | 0.02 | 1.42 | 0.51 | 0.99 | 1.16 | 3.90 | 0.41 | 0.19 | 0.35 | 0.00 | 0.32 | 3.90 | |||||||||||||
2000 | 0.00 | 0.00 | 0.35 | 0.25 | 0.04 | 0.81 | a | 1.81 | 0.07 | 0.07 | 1.09 | 0.75 | c | 0.20 | 1.81 | d | ||||||||||
2001 | 0.52 | 0.31 | 2.04 | a | 0.03 | 1.49 | 0.82 | 0.07 | 0.53 | 0.26 | 0.23 | 0.65 | d | 0.07 | 2.04 | e | ||||||||||
2002 | 0.28 | 0.07 | 1.22 | 0.06 | 0.00 | 1.58 | 1.49 | 0.70 | 0.95 | 1.20 | 0.05 | 0.55 | 1.58 | |||||||||||||
2003 | 0.10 | 0.43 | 0.11 | 0.00 | 1.32 | 0.42 | 1.16 | 0.57 | 0.12 | 0.20 | 0.12 | 0.05 | h | 1.32 | h | |||||||||||
2004 | 0.02 | 1.10 | 0.36 | 3.15 | 0.38 | 3.98 | 1.40 | 0.31 | 0.61 | 1.26 | 0.68 | 0.35 | 3.98 | |||||||||||||
2005 | 0.35 | 0.76 | 0.37 | 0.31 | 1.60 | ----- | z | 0.18 | a | 0.51 | 1.69 | 0.54 | 0.04 | 0.00 | ----- | z | ||||||||||
2006 | 0.00 | 0.17 | 0.02 | 0.64 | 0.16 | 0.90 | 0.86 | 1.67 | 1.57 | 0.57 | 0.00 | 0.18 | 1.67 | |||||||||||||
2007 | 0.45 | 0.21 | 0.82 | 0.46 | 2.14 | 1.08 | 2.06 | 1.38 | 0.45 | 0.03 | 0.59 | 0.46 | 2.14 | |||||||||||||
2008 | 0.03 | 0.10 | 0.05 | 0.01 | 0.95 | 0.34 | 1.00 | 1.40 | 0.45 | 0.54 | 0.00 | 0.33 | 1.40 | |||||||||||||
2009 | 0.01 | 0.01 | 0.20 | 0.00 | 0.49 | 1.98 | 2.10 | 0.36 | 1.15 | a | 1.12 | a | 0.34 | 0.27 | 2.10 | b | ||||||||||
2010 | 0.37 | 0.42 | 0.35 | 0.52 | 0.50 | 0.35 | 0.88 | c | 1.80 | 1.15 | 1.50 | 0.00 | 0.01 | a | 1.80 | d | ||||||||||
2011 | 0.00 | 0.13 | 0.00 | 0.00 | 0.00 | 0.00 | a | 0.18 | h | 0.10 | b | 0.44 | a | 0.60 | 0.00 | e | 0.60 | 0.60 | q | |||||||
2012 | 0.02 | 0.31 | a | 0.04 | 0.11 | 0.44 | ----- | z | 0.68 | 0.41 | 0.70 | 0.63 | a | 0.11 | b | 0.03 | ----- | z | ||||||||
2013 | 0.33 | 0.10 | 0.00 | 0.00 | 0.13 | 0.31 | c | 1.18 | 0.54 | 5.00 | 0.24 | m | 0.20 | 0.27 | 5.00 | p | ||||||||||
2014 | 0.00 | 0.03 | 0.19 | 0.14 | 4.74 | 0.35 | 1.75 | 0.80 | 1.26 | a | 0.29 | 0.19 | 0.02 | 4.74 | a | |||||||||||
2015 | 0.27 | 0.29 | 0.49 | 1.20 | 1.00 | 0.72 | 0.65 | l | 0.45 | 1.23 | c | 1.34 | 0.22 | 0.15 | 1.34 | o | ||||||||||
2016 | 0.08 | 0.14 | 0.00 | 0.51 | 0.60 | 0.90 | 0.10 | 0.63 | c | 0.62 | 0.17 | 0.02 | f | 0.18 | j | 0.90 | s | |||||||||
2017 | 0.48 | h | 0.18 | g | 0.11 | f | 0.82 | r | 0.50 | c | 0.60 | k | 0.81 | a | 0.98 | 1.78 | c | 1.42 | d | 0.02 | e | 0.00 | m | ----- | z | |
2018 | 0.19 | h | 0.48 | g | 0.02 | j | 0.01 | h | 0.50 | g | 0.74 | h | 0.30 | h | 0.65 | f | 2.00 | h | 1.66 | j | 0.02 | i | 0.60 | q | ----- | z |
2019 | 0.41 | r | 0.00 | c | 0.66 | f | 0.55 | e | 0.12 | a | 0.19 | c | 0.91 | e | 0.27 | d | 0.24 | f | 3.39 | a | 0.59 | i | 0.08 | l | ----- | z |
2020 | 0.18 | i | 0.48 | g | 0.57 | a | 0.02 | d | 0.10 | d | 0.16 | e | 0.14 | c | 0.30 | g | 0.13 | e | 0.60 | b | 0.03 | d | 0.00 | e | ----- | z |
2021 | 1.25 | 0.25 | 0.00 | 0.26 | a | 0.30 | 1.23 | d | 0.95 | a | 0.35 | 0.09 | e | 0.20 | 0.01 | 0.00 | 1.25 | k | ||||||||
2022 | 0.00 | c | 0.00 | g | 0.05 | f | 0.00 | 0.11 | c | 1.74 | b | 0.03 | 2.07 | b | 0.21 | 0.92 | c | ----- | z | ----- | z | ----- | z | |||
2023 | 0.20 | r | 0.15 | l | 0.00 | u | 0.00 | m | 1.30 | r | 1.75 | p | 0.50 | 0.29 | f | 1.70 | 0.16 | l | 0.34 | n | 0.18 | k | ----- | z | ||
2024 | 1.00 | 0.50 | p | 0.02 | w | 0.30 | t | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.26 | 0.27 | 0.29 | 0.33 | 0.64 | 0.75 | 0.99 | 0.91 | 0.86 | 0.71 | 0.27 | 0.24 | 2.12 | |||||||||||||
S.D. | 0.28 | 0.30 | 0.40 | 0.48 | 0.74 | 0.76 | 0.89 | 0.72 | 0.82 | 0.82 | 0.32 | 0.25 | 1.03 | |||||||||||||
SKEW | 1.42 | 2.06 | 2.27 | 3.43 | 3.09 | 1.77 | 1.74 | 0.86 | 2.81 | 2.16 | 1.55 | 1.11 | 0.94 | |||||||||||||
MAX | 1.25 | 1.43 | 2.04 | 3.15 | 4.74 | 3.98 | 4.72 | 2.80 | 5.00 | 3.93 | 1.45 | 0.97 | 4.74 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.03 | 0.03 | 0.00 | 0.00 | 0.00 | 0.00 | 0.63 | |||||||||||||
YRS | 68 | 68 | 66 | 70 | 71 | 68 | 70 | 69 | 70 | 69 | 68 | 67 | 48 |