YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1942 | 0.14 | 0.08 | 0.56 | 0.72 | 0.86 | 0.81 | 2.30 | 2.39 | 2.52 | 0.73 | 0.41 | 0.40 | 2.52 | |||||||||||||
1943 | 0.20 | 0.36 | ----- | z | 0.31 | 1.89 | 2.40 | 1.82 | 0.88 | 1.67 | 0.67 | 0.63 | 0.00 | ----- | z | |||||||||||
1944 | 0.65 | 0.75 | 0.56 | 0.70 | 1.20 | 2.88 | 0.95 | 1.80 | 0.58 | 0.18 | 0.27 | 0.04 | 2.88 | |||||||||||||
1945 | 0.11 | 0.56 | 0.88 | 1.18 | 1.22 | 1.96 | 0.85 | 0.50 | 2.70 | 0.30 | 0.73 | 0.62 | 2.70 | |||||||||||||
1946 | 0.73 | 0.58 | 0.54 | 0.15 | 1.08 | a | 1.90 | 0.26 | 1.05 | 0.83 | 0.80 | 0.58 | 0.36 | 1.90 | a | |||||||||||
1947 | 0.40 | 0.18 | 0.20 | 0.66 | 0.59 | 1.49 | 1.78 | 1.60 | 2.52 | 0.69 | 0.40 | 0.40 | 2.52 | |||||||||||||
1948 | 0.11 | 1.05 | 0.96 | 0.93 | 0.80 | 0.90 | 0.99 | a | 6.70 | 1.61 | 1.45 | 1.20 | 0.74 | 6.70 | a | |||||||||||
1949 | 1.24 | 0.10 | 1.18 | 0.25 | 0.69 | 1.70 | 1.66 | 0.30 | 1.04 | 0.84 | 0.31 | 0.20 | 1.70 | |||||||||||||
1950 | 0.32 | 0.46 | 1.20 | 0.62 | 1.44 | 1.31 | 2.72 | 1.07 | 1.06 | 0.79 | 0.39 | 0.24 | 2.72 | |||||||||||||
1951 | 0.41 | 1.54 | 0.64 | 0.87 | 1.26 | 1.90 | 0.90 | 1.25 | 2.14 | 0.45 | 0.44 | 0.20 | 2.14 | |||||||||||||
1952 | 0.44 | 0.18 | 1.68 | 0.69 | 1.80 | 1.40 | 1.76 | 1.32 | a | 0.48 | 0.00 | 1.34 | 0.25 | 1.80 | a | |||||||||||
1953 | 0.35 | 0.43 | 0.46 | 0.98 | 1.30 | 1.40 | 2.41 | 2.15 | 0.36 | 0.10 | 1.10 | 0.47 | 2.41 | |||||||||||||
1954 | 0.08 | 0.12 | 0.25 | 0.65 | 1.49 | 2.00 | 1.80 | 1.50 | 0.70 | 0.59 | 0.19 | 0.47 | 2.00 | |||||||||||||
1955 | 0.17 | 0.46 | 0.20 | 1.15 | 0.40 | 1.59 | 1.44 | 1.56 | 0.37 | 0.43 | 0.16 | 0.25 | 1.59 | |||||||||||||
1956 | 0.26 | 0.19 | 1.28 | 0.93 | 0.98 | 2.17 | 2.22 | 0.75 | 0.34 | 0.33 | 0.31 | 0.09 | 2.22 | |||||||||||||
1957 | 0.04 | 0.41 | 0.40 | 0.25 | 0.75 | 0.99 | 0.93 | 1.66 | a | 0.54 | 0.87 | 0.74 | 0.29 | 1.66 | a | |||||||||||
1958 | 0.34 | 0.04 | 0.17 | 1.11 | 0.51 | 1.91 | 0.83 | 0.72 | 0.48 | 0.14 | 0.36 | 0.11 | 1.91 | |||||||||||||
1959 | 0.25 | 0.37 | 0.52 | 0.70 | 1.95 | 2.81 | 0.35 | a | 2.05 | 1.70 | 0.42 | 0.36 | 0.90 | 2.81 | a | |||||||||||
1960 | 0.14 | 0.22 | 0.25 | 1.11 | 2.50 | 1.35 | 2.93 | 0.56 | 0.97 | 0.14 | 0.45 | 0.55 | 2.93 | |||||||||||||
1961 | 0.17 | 0.75 | 1.18 | 0.32 | 0.92 | 1.00 | 2.58 | 1.71 | 1.02 | 0.93 | a | 0.39 | 0.36 | 2.58 | a | |||||||||||
1962 | 0.06 | 0.21 | 0.30 | 0.87 | 0.90 | 0.88 | 2.05 | 4.07 | 0.59 | 0.71 | 0.20 | 0.16 | 4.07 | |||||||||||||
1963 | 0.16 | 0.12 | 0.82 | 0.32 | 0.86 | 0.68 | 2.60 | 0.72 | 1.20 | 0.24 | 0.43 | 0.18 | 2.60 | |||||||||||||
1964 | 0.14 | 0.09 | 0.38 | 1.92 | 1.10 | 1.42 | 1.55 | 1.68 | 3.80 | 0.91 | ----- | z | 0.72 | ----- | z | |||||||||||
1965 | 0.07 | 0.72 | 0.60 | 0.70 | 1.59 | 2.12 | 1.90 | 0.39 | 1.02 | 0.27 | 0.44 | 0.55 | 2.12 | |||||||||||||
1966 | 0.27 | 0.34 | 0.60 | 0.41 | 0.60 | 1.15 | 1.90 | 1.15 | 1.03 | 1.10 | 0.09 | 0.47 | b | 1.90 | b | |||||||||||
1967 | 0.82 | 0.18 | 0.30 | 1.48 | 0.53 | 2.50 | 1.04 | 0.91 | 0.40 | 0.55 | 0.05 | 0.27 | 2.50 | |||||||||||||
1968 | 0.21 | 0.06 | 0.22 | 1.48 | 0.87 | 2.10 | 6.00 | 4.30 | 2.05 | 2.17 | 0.08 | 0.36 | 6.00 | |||||||||||||
1969 | 0.54 | 0.16 | 0.99 | 0.44 | 1.35 | 2.34 | 0.91 | 1.53 | 0.21 | 1.14 | 0.24 | 0.55 | 2.34 | |||||||||||||
1970 | 0.16 | 0.25 | 0.48 | 0.49 | 1.30 | 0.95 | 0.73 | 0.71 | 2.24 | 1.69 | 1.28 | 0.52 | 2.24 | |||||||||||||
1971 | 0.34 | 0.93 | 0.27 | 0.55 | 0.72 | 1.45 | 2.08 | 0.25 | 0.44 | 0.75 | 0.61 | 0.18 | 2.08 | |||||||||||||
1972 | 0.30 | 0.08 | 0.18 | 0.87 | 0.94 | 1.35 | 1.87 | 0.60 | 0.80 | 1.05 | 0.53 | 0.32 | 1.87 | |||||||||||||
1973 | 0.42 | 0.20 | 0.77 | 1.13 | 2.63 | 0.80 | 1.45 | 1.61 | 2.10 | 0.37 | 1.80 | 0.39 | 2.63 | |||||||||||||
1974 | 0.17 | 0.10 | 0.50 | 0.67 | 0.95 | 1.55 | 0.73 | 1.30 | 0.60 | 0.94 | 0.24 | 0.10 | 1.55 | |||||||||||||
1975 | 1.10 | 0.25 | 0.30 | 1.02 | 1.40 | ----- | z | ----- | z | ----- | z | 1.40 | ----- | z | 1.75 | 1.13 | ----- | z | ||||||||
1976 | 0.02 | a | 0.20 | 1.00 | 0.73 | 0.95 | 2.38 | 1.26 | 1.82 | 0.65 | 0.28 | 0.05 | 0.20 | 2.38 | a | |||||||||||
1977 | 0.11 | 0.40 | 0.75 | 0.55 | a | 0.73 | 2.30 | 0.41 | 1.24 | 1.09 | 1.05 | 0.24 | 0.18 | 2.30 | a | |||||||||||
1978 | 0.17 | 0.10 | 0.18 | 0.63 | 1.02 | 2.18 | 2.55 | 0.66 | 0.36 | 0.33 | 0.62 | 0.15 | 2.55 | |||||||||||||
1979 | 0.20 | 0.15 | 1.38 | 0.40 | 1.10 | ----- | z | 2.14 | 2.76 | 0.56 | 0.56 | 0.51 | 0.46 | ----- | z | |||||||||||
1980 | 0.48 | 0.20 | 0.25 | a | 0.40 | 3.60 | 1.07 | 1.12 | 1.33 | 2.77 | 0.62 | 0.07 | 0.16 | 3.60 | a | |||||||||||
1981 | 0.08 | 0.82 | 0.32 | 1.35 | 1.58 | 2.09 | 1.48 | 1.87 | 0.50 | 0.67 | 0.20 | 0.26 | 2.09 | |||||||||||||
1982 | 0.70 | 0.34 | 0.50 | 0.50 | 0.91 | i | 0.96 | 1.43 | 1.43 | 1.31 | 1.49 | 1.60 | 1.50 | 1.60 | i | |||||||||||
1983 | 0.13 | 0.35 | 0.68 | 0.80 | 0.84 | 1.01 | 1.76 | 1.39 | 2.21 | 0.88 | 0.55 | 0.13 | 2.21 | |||||||||||||
1984 | 0.20 | 0.57 | 0.16 | 1.12 | 1.22 | 2.92 | 1.39 | 0.87 | 0.35 | 1.19 | 0.80 | 0.50 | 2.92 | |||||||||||||
1985 | 0.10 | 0.01 | 0.75 | 0.80 | 0.36 | 1.63 | 0.70 | 1.41 | 1.42 | 0.60 | 0.27 | 0.45 | 1.63 | |||||||||||||
1986 | 0.20 | 0.04 | 0.97 | 0.81 | 1.03 | 1.55 | 0.85 | d | 2.29 | 0.85 | 1.70 | 0.36 | 0.11 | 2.29 | d | |||||||||||
1987 | 0.08 | 0.01 | 0.18 | 0.55 | 0.31 | a | 0.49 | 3.15 | 2.09 | 0.46 | 0.71 | 0.81 | 0.61 | 3.15 | a | |||||||||||
1988 | 0.29 | 0.13 | 0.41 | 0.77 | 0.91 | 0.42 | 0.46 | 1.23 | 1.39 | 0.21 | 0.85 | 0.35 | y | 1.39 | y | |||||||||||
1989 | 0.14 | 0.03 | 0.48 | 1.07 | 0.60 | 1.01 | 1.38 | 1.78 | 0.66 | 0.20 | 0.27 | 0.05 | b | 1.78 | b | |||||||||||
1990 | 0.09 | 0.22 | 0.89 | 1.48 | 1.15 | 2.15 | 3.10 | 1.16 | 0.30 | 0.41 | 0.23 | ----- | z | ----- | z | |||||||||||
1991 | 0.12 | 0.23 | 0.80 | 0.95 | 2.22 | 1.40 | l | 1.30 | 2.74 | u | 0.65 | 1.17 | s | 1.63 | n | 0.40 | ----- | z | ||||||||
1992 | 0.23 | 0.32 | 0.95 | q | 0.64 | 0.57 | x | 1.12 | 1.91 | o | 1.28 | v | 0.95 | s | 2.20 | w | 1.06 | o | 0.42 | g | ----- | z | ||||
1993 | 0.27 | 0.15 | u | 0.72 | w | 1.59 | r | 2.40 | l | 1.90 | m | 1.82 | o | 3.95 | r | 0.73 | 0.52 | 0.28 | x | 0.51 | ----- | z | ||||
1994 | 0.27 | t | 0.29 | u | 0.08 | x | 0.90 | u | 1.15 | v | 2.00 | p | 1.53 | n | 2.42 | u | 2.50 | q | 1.29 | w | 0.94 | v | 0.15 | w | ----- | z |
1995 | 0.07 | v | 0.03 | w | 0.87 | t | 0.82 | n | 1.25 | p | 1.73 | q | 2.12 | p | 1.57 | u | 1.61 | u | 1.46 | s | 0.27 | y | 0.10 | y | ----- | z |
1996 | 0.63 | w | ----- | z | 0.95 | y | 0.32 | w | 0.72 | l | 1.22 | p | 1.32 | x | 1.82 | w | 0.78 | s | ----- | z | 1.04 | t | ----- | z | ----- | z |
1997 | ----- | z | 0.00 | e | 0.40 | 0.55 | w | 1.50 | 0.95 | 1.65 | 0.91 | 0.68 | 1.72 | 1.00 | b | 0.15 | ----- | z | ||||||||
1998 | 0.20 | a | 0.20 | 0.26 | 1.07 | 1.24 | 2.22 | 1.36 | 1.34 | 0.50 | 1.36 | 0.60 | 0.09 | 2.22 | a | |||||||||||
1999 | 0.33 | 0.04 | 0.34 | 2.34 | 1.55 | 1.83 | 1.96 | 1.44 | 0.85 | 0.83 | 0.62 | 0.22 | 2.34 | |||||||||||||
2000 | 0.31 | 0.33 | 0.35 | 0.27 | 4.52 | 3.60 | 1.62 | 1.72 | 0.22 | 0.33 | 1.05 | 0.33 | a | 4.52 | a | |||||||||||
2001 | 0.72 | c | 0.85 | 0.45 | a | 1.44 | 1.81 | 4.30 | 0.59 | ----- | z | 0.85 | 0.72 | 0.77 | 0.57 | g | ----- | z | ||||||||
2002 | 0.17 | a | 0.21 | a | 1.70 | 0.80 | 0.55 | 2.10 | 1.50 | 1.65 | 0.80 | 1.52 | 0.22 | 0.10 | e | 2.10 | g | |||||||||
2003 | 0.10 | 0.15 | 1.30 | 0.58 | 1.36 | 0.90 | 0.70 | 1.30 | 1.33 | 0.32 | 0.67 | 0.37 | 1.36 | |||||||||||||
2004 | 0.15 | b | 0.40 | 0.98 | 0.65 | 1.33 | 1.30 | 1.87 | 2.50 | 6.73 | 0.08 | 0.40 | 0.19 | 6.73 | b | |||||||||||
2005 | 0.36 | c | 0.74 | 1.41 | a | 1.84 | 0.70 | 0.85 | 2.05 | 2.10 | 7.63 | 0.83 | 0.51 | 0.21 | 7.63 | d | ||||||||||
2006 | 0.42 | 0.13 | a | 1.28 | 1.80 | 0.67 | 0.97 | 1.06 | 4.46 | 0.85 | 0.13 | 0.51 | a | 0.75 | 4.46 | b | ||||||||||
2007 | 0.35 | 0.52 | 0.65 | 0.33 | 1.63 | 0.61 | 2.73 | 5.50 | 4.14 | 0.63 | 0.12 | 0.11 | b | 5.50 | b | |||||||||||
2008 | 0.20 | 0.08 | 0.07 | 2.00 | 1.44 | 1.90 | 1.30 | 0.66 | 0.25 | 0.46 | 1.14 | 0.35 | 2.00 | |||||||||||||
2009 | 0.15 | 0.42 | 0.85 | 1.00 | 0.58 | 1.40 | 0.00 | 0.90 | 0.40 | 1.30 | 0.80 | 0.70 | 1.40 | |||||||||||||
2010 | 0.25 | 0.23 | 0.75 | 0.33 | 0.90 | 1.90 | 2.55 | 0.32 | 6.00 | 0.34 | 1.69 | 0.48 | 6.00 | |||||||||||||
2011 | 0.23 | 0.60 | 0.39 | 0.95 | 0.84 | 2.60 | 2.20 | 0.53 | 0.43 | 1.10 | 0.10 | 0.43 | c | 2.60 | c | |||||||||||
2012 | 0.35 | 1.45 | 0.34 | 1.20 | 1.11 | 2.40 | 0.96 | 1.38 | 0.40 | 1.08 | 0.24 | 0.60 | 2.40 | |||||||||||||
2013 | 0.20 | 0.55 | 0.75 | 1.95 | 1.20 | 3.70 | 3.80 | 1.95 | 0.85 | 1.00 | 0.52 | a | 0.20 | 3.80 | a | |||||||||||
2014 | 0.20 | b | 0.72 | a | 0.35 | 2.34 | 0.50 | 2.57 | 0.45 | 1.46 | 1.19 | 0.48 | 0.22 | a | 0.16 | 2.57 | d | |||||||||
2015 | 0.14 | 0.21 | 0.45 | 0.77 | 1.03 | 1.62 | 2.05 | 1.44 | 1.30 | 0.36 | a | 1.96 | 1.24 | 2.05 | a | |||||||||||
2016 | 0.10 | 0.29 | 0.60 | 0.79 | 1.00 | 1.60 | 2.46 | a | 1.25 | 5.15 | 4.25 | 0.15 | 0.57 | a | 5.15 | b | ||||||||||
2017 | 0.55 | 0.34 | 0.49 | 0.61 | 1.10 | 1.78 | 2.12 | 0.59 | 0.45 | 2.35 | 0.20 | 0.24 | 2.35 | |||||||||||||
2018 | 0.40 | 0.35 | 0.40 | 0.87 | 1.94 | 1.90 | 1.61 | 0.75 | 2.10 | 0.74 | 0.28 | 0.52 | 2.10 | |||||||||||||
2019 | 0.50 | 0.50 | 0.75 | a | 0.97 | 1.33 | 1.95 | 1.60 | 0.95 | 2.00 | 1.69 | 0.73 | 1.10 | 2.00 | a | |||||||||||
2020 | 0.50 | 0.50 | 1.45 | 0.30 | 1.60 | 1.16 | 3.90 | 2.10 | 0.65 | 0.92 | 0.97 | 0.85 | 3.90 | |||||||||||||
2021 | 0.57 | 0.28 | 1.00 | 0.43 | 0.93 | 0.88 | 1.92 | 2.50 | 1.09 | 0.67 | 0.43 | 0.46 | 2.50 | |||||||||||||
2022 | 0.35 | 0.15 | 0.73 | 1.44 | 1.82 | 0.53 | 1.02 | 2.00 | 0.69 | 0.20 | 0.36 | 0.66 | 2.00 | |||||||||||||
2023 | 0.63 | 1.01 | 0.63 | 1.26 | 1.90 | 0.72 | 1.10 | 2.00 | 0.70 | 1.73 | 0.13 | 1.09 | 2.00 | |||||||||||||
2024 | 0.30 | 0.25 | 1.46 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.30 | 0.36 | 0.65 | 0.89 | 1.22 | 1.66 | 1.67 | 1.59 | 1.36 | 0.81 | 0.56 | 0.41 | 2.82 | |||||||||||||
S.D. | 0.23 | 0.31 | 0.40 | 0.49 | 0.68 | 0.77 | 0.95 | 1.12 | 1.43 | 0.65 | 0.45 | 0.30 | 1.38 | |||||||||||||
SKEW | 1.78 | 1.63 | 0.82 | 1.05 | 2.22 | 0.87 | 1.46 | 2.31 | 2.57 | 2.36 | 1.37 | 1.36 | 1.85 | |||||||||||||
MAX | 1.24 | 1.54 | 1.70 | 2.34 | 4.52 | 4.30 | 6.00 | 6.70 | 7.63 | 4.25 | 1.96 | 1.50 | 7.63 | |||||||||||||
MIN | 0.02 | 0.00 | 0.07 | 0.15 | 0.31 | 0.42 | 0.00 | 0.25 | 0.21 | 0.00 | 0.05 | 0.00 | 1.36 | |||||||||||||
YRS | 79 | 79 | 77 | 77 | 76 | 75 | 76 | 74 | 78 | 76 | 75 | 75 | 66 |