YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1942 | 0.28 | 0.43 | 0.25 | 3.24 | 0.67 | 0.21 | 1.07 | 4.68 | 4.00 | 2.61 | 0.00 | 0.97 | a | 18.41 | ||||||||||||
1943 | 0.14 | 0.02 | 0.25 | 0.49 | 1.44 | 1.37 | 1.83 | 2.32 | 0.32 | a | 0.34 | 0.50 | 2.08 | b | 11.10 | |||||||||||
1944 | 0.71 | 0.07 | 0.31 | 0.97 | b | 0.66 | 0.81 | c | 1.49 | 2.57 | 0.35 | 2.02 | 0.87 | 1.66 | a | 12.49 | ||||||||||
1945 | 0.87 | 0.10 | 0.14 | 0.78 | 0.44 | 0.29 | 2.16 | 3.42 | 1.46 | 0.60 | 0.00 | 0.40 | 10.66 | |||||||||||||
1946 | 0.18 | 0.00 | 1.87 | 0.00 | 0.15 | 0.20 | 4.56 | 6.09 | 1.18 | 1.36 | 0.91 | 0.00 | 16.50 | |||||||||||||
1947 | 0.00 | 0.00 | 0.90 | 0.22 | 2.09 | 0.84 | 0.74 | 2.93 | 0.09 | 0.59 | e | 0.35 | a | 0.53 | a | 9.28 | ||||||||||
1948 | 0.99 | a | 0.87 | 0.96 | 0.10 | 0.77 | g | 0.62 | d | 1.80 | ----- | z | ----- | z | ----- | z | 0.00 | 0.00 | 5.34 | d | ||||||
1949 | 1.40 | n | 0.60 | c | 0.00 | j | ----- | z | 0.00 | t | 1.40 | ----- | z | ----- | z | 6.30 | 0.20 | b | 0.00 | 0.60 | 9.10 | f | ||||
1950 | 0.00 | a | ----- | z | 0.00 | 0.10 | 0.20 | 2.17 | 7.72 | 1.40 | 5.10 | 0.00 | 0.00 | 0.00 | 16.69 | a | ||||||||||
1951 | 0.50 | 1.30 | 3.38 | 1.10 | 1.50 | 0.51 | 2.91 | 1.90 | 0.00 | 0.30 | 0.70 | 0.80 | 14.90 | |||||||||||||
1952 | 0.40 | 1.60 | 0.96 | 1.00 | 0.40 | 0.30 | 3.40 | 2.70 | 0.40 | 0.00 | 0.98 | ----- | z | 12.14 | a | |||||||||||
1953 | 0.00 | 1.60 | b | 0.70 | 0.00 | 1.00 | 0.71 | 1.30 | 1.70 | 0.40 | 0.30 | 2.20 | 0.80 | 10.71 | ||||||||||||
1954 | 1.00 | 0.10 | 0.10 | 0.10 | 1.20 | 0.10 | 2.40 | 3.55 | 1.78 | 0.80 | 0.05 | 0.24 | 11.42 | |||||||||||||
1955 | 0.06 | 0.52 | 0.02 | 0.10 | 1.20 | 1.60 | 2.90 | 3.90 | 1.50 | 0.50 | 0.10 | 0.30 | 12.70 | |||||||||||||
1956 | 0.08 | 0.53 | 0.60 | a | 0.00 | 0.13 | 0.69 | 1.04 | 1.12 | 0.00 | 0.35 | 0.00 | a | 0.60 | 5.14 | |||||||||||
1957 | 1.44 | 0.29 | 1.35 | 0.57 | 1.49 | 0.06 | 3.60 | 5.82 | 0.00 | 4.70 | 2.06 | 0.29 | 21.67 | |||||||||||||
1958 | 0.98 | 0.25 | 2.82 | 2.72 | 0.50 | 0.56 | 2.32 | 2.66 | 2.90 | 1.50 | 0.20 | a | 0.67 | 18.08 | ||||||||||||
1959 | 0.31 | 0.10 | 0.69 | 1.51 | 2.50 | 2.28 | 1.97 | 4.83 | 0.05 | 2.68 | 0.05 | 2.95 | 19.92 | |||||||||||||
1960 | 0.59 | 0.54 | 1.40 | 0.00 | 0.15 | 2.55 | 2.70 | c | 1.34 | 0.31 | 3.50 | 0.15 | 1.50 | 14.73 | ||||||||||||
1961 | 0.52 | 0.56 | 1.62 | 1.51 | 0.17 | 2.07 | 2.74 | 6.31 | 1.97 | 1.20 | 0.67 | 0.79 | 20.13 | |||||||||||||
1962 | 0.26 | 0.33 | 0.75 | 0.47 | 0.00 | 0.84 | 2.38 | 0.64 | 1.68 | 0.50 | 1.04 | 0.86 | 9.75 | |||||||||||||
1963 | 0.76 | 1.61 | 0.48 | 0.45 | 1.73 | 1.09 | 2.55 | 4.25 | 2.08 | 0.10 | 0.40 | 0.29 | 15.79 | |||||||||||||
1964 | 0.48 | 1.86 | 0.41 | 1.09 | 0.18 | 1.02 | 1.91 | 2.19 | 0.70 | 0.00 | 0.14 | ----- | z | 9.98 | a | |||||||||||
1965 | ----- | z | 0.85 | 2.70 | 0.80 | 2.32 | 1.87 | 3.16 | 2.10 | 2.01 | 0.12 | 0.00 | 0.35 | 16.28 | a | |||||||||||
1966 | 0.03 | 0.00 | 0.00 | 0.20 | 1.25 | 2.71 | 0.85 | 3.60 | 0.20 | 0.00 | 0.00 | 0.09 | 8.93 | |||||||||||||
1967 | 0.00 | 0.10 | 0.10 | 0.00 | 0.92 | 1.50 | 4.10 | 3.54 | 2.27 | 0.03 | 0.03 | 0.11 | 12.70 | |||||||||||||
1968 | 0.00 | 0.07 | 0.13 | 0.03 | 0.00 | 0.00 | 3.21 | 2.02 | 0.00 | 0.00 | 0.00 | 0.03 | 5.49 | |||||||||||||
1969 | 0.00 | 0.07 | 0.18 | 1.50 | 0.07 | d | 0.50 | 1.65 | 1.33 | 2.74 | 1.45 | 0.00 | 1.50 | 10.99 | ||||||||||||
1970 | 0.00 | 1.50 | 0.03 | 0.00 | 0.05 | 0.05 | 1.70 | 2.19 | 0.55 | 0.08 | 0.00 | 0.00 | 6.15 | |||||||||||||
1971 | 0.08 | 0.05 | 0.06 | 0.95 | 0.03 | 0.03 | 0.95 | 0.28 | ----- | z | 0.02 | a | 0.15 | 0.08 | 2.68 | a | ||||||||||
1972 | 0.00 | 0.01 | 0.00 | 0.00 | 0.85 | 2.10 | ----- | z | 2.05 | 2.58 | 1.15 | 0.28 | 0.02 | 9.04 | a | |||||||||||
1973 | 0.04 | a | 0.61 | a | 0.60 | b | ----- | z | 0.01 | b | 0.54 | 1.25 | 0.50 | 0.01 | 0.80 | 0.00 | 0.02 | 4.38 | a | |||||||
1974 | 0.58 | 0.06 | 0.00 | a | 0.00 | 0.00 | 0.27 | 0.04 | 1.50 | i | 0.18 | ----- | z | 0.11 | 0.07 | 1.31 | b | |||||||||
1975 | 0.08 | 0.07 | a | 0.03 | 0.11 | 0.03 | 0.00 | 0.06 | c | 0.71 | 3.10 | 0.00 | 0.03 | 0.01 | 4.23 | |||||||||||
1976 | 0.03 | a | 0.00 | 0.01 | 0.40 | 0.56 | 0.08 | 1.68 | 0.08 | 0.08 | 0.01 | 0.10 | 0.00 | 3.03 | ||||||||||||
1977 | 0.05 | 0.01 | 0.00 | 1.12 | 0.00 | 1.20 | 3.00 | 3.15 | 0.20 | 0.00 | 0.08 | 0.01 | 8.82 | |||||||||||||
1978 | 0.03 | 0.08 | 0.03 | 0.00 | 0.10 | 2.62 | 2.40 | 0.26 | 0.11 | 0.12 | f | 0.20 | b | 2.30 | 8.13 | a | ||||||||||
1979 | 0.07 | r | 0.03 | 0.02 | 0.04 | 2.42 | ----- | z | 1.32 | ----- | z | 0.11 | 0.04 | 0.04 | 0.09 | 4.11 | c | |||||||||
1980 | 0.02 | a | 0.03 | 0.07 | 0.07 | 0.07 | 0.00 | 0.04 | 0.06 | 0.07 | f | 0.00 | 0.05 | c | 0.00 | 0.41 | a | |||||||||
1981 | 0.03 | 0.02 | 0.03 | ----- | z | 0.04 | 0.04 | 0.08 | ----- | z | 0.02 | h | ----- | z | 0.02 | 0.00 | 0.26 | d | ||||||||
1982 | 0.01 | 0.07 | 0.01 | 0.00 | 0.05 | b | 0.11 | 0.12 | 0.29 | 0.54 | 0.01 | 0.05 | 0.09 | 1.35 | ||||||||||||
1983 | 0.04 | 0.12 | 0.04 | 0.01 | 0.15 | 0.04 | 0.09 | 0.10 | 0.07 | 0.09 | 0.04 | 0.12 | 0.91 | |||||||||||||
1984 | 0.11 | 0.01 | 0.09 | 0.03 | 0.03 | 0.10 | 0.07 | ----- | z | 0.12 | 0.97 | 0.02 | ----- | z | 1.55 | b | ||||||||||
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | l |
1992 | ----- | z | ----- | z | 0.56 | 0.21 | ----- | z | 0.66 | 2.35 | 2.26 | 0.50 | 0.40 | 0.33 | 1.02 | 8.29 | c | |||||||||
1993 | 0.55 | n | 0.71 | 0.30 | 0.00 | 0.72 | 2.30 | 1.62 | 3.12 | 0.38 | 0.99 | 0.43 | 0.00 | 10.57 | a | |||||||||||
1994 | 0.35 | 0.00 | 2.86 | 1.17 | 5.58 | 3.79 | 1.67 | 1.65 | 0.00 | 2.00 | 1.15 | a | 0.00 | a | 20.22 | |||||||||||
1995 | 0.52 | 0.00 | 0.00 | 2.17 | 1.18 | 1.67 | 2.72 | 2.39 | 0.00 | 0.00 | 0.10 | 0.35 | 11.10 | |||||||||||||
1996 | 0.25 | 0.31 | 0.08 | 0.00 | 0.37 | 3.77 | 3.12 | 3.51 | 2.54 | 2.87 | 0.53 | 0.24 | 17.59 | |||||||||||||
1997 | 1.93 | e | 0.83 | 0.20 | 2.60 | 1.65 | 2.08 | 2.36 | 2.62 | 5.70 | a | 0.78 | 1.10 | 3.82 | 25.67 | |||||||||||
1998 | 0.00 | 0.55 | 3.53 | 1.53 | 0.00 | 0.50 | 6.16 | 3.89 | 1.07 | 3.60 | 0.30 | 0.43 | 21.56 | |||||||||||||
1999 | 0.68 | 0.00 | 1.43 | 1.66 | 1.99 | 1.30 | 3.81 | 4.74 | 2.42 | 0.70 | 0.00 | 0.00 | 18.73 | |||||||||||||
2000 | 0.00 | 0.00 | 2.54 | 0.75 | 0.05 | 1.81 | 3.62 | 1.74 | 0.39 | 3.21 | 0.85 | 1.68 | b | 16.64 | ||||||||||||
2001 | 2.30 | 0.51 | 1.52 | 0.35 | 0.93 | 3.68 | 3.16 | 3.99 | 0.92 | 0.00 | 2.14 | 0.36 | 19.86 | |||||||||||||
2002 | 0.78 | 0.13 | 0.00 | 0.00 | 0.00 | 0.62 | 3.43 | 1.12 | 2.04 | 1.61 | a | 0.48 | 1.08 | 11.29 | ||||||||||||
2003 | 0.00 | 0.85 | 0.38 | 0.00 | 0.58 | 1.44 | 0.59 | 1.98 | 1.08 | 1.56 | 1.05 | 0.62 | 10.13 | |||||||||||||
2004 | 0.45 | 2.01 | 0.20 | 7.21 | 0.00 | 1.84 | 3.64 | 3.11 | 1.34 | 1.81 | 2.41 | 0.66 | 24.68 | |||||||||||||
2005 | 1.78 | 0.88 | 1.81 | 0.97 | 1.34 | 2.06 | 1.04 | 3.38 | 4.37 | 0.71 | 0.09 | 0.00 | 18.43 | |||||||||||||
2006 | 0.00 | 0.01 | 0.10 | 1.12 | 1.15 | 1.53 | 4.36 | 6.96 | 5.59 | 1.99 | 0.30 | 2.57 | 25.68 | |||||||||||||
2007 | 0.81 | 0.05 | 0.81 | 1.09 | 2.59 | 2.97 | 1.03 | 1.90 | 1.07 | 0.18 | 1.05 | 1.08 | 14.63 | |||||||||||||
2008 | 0.07 | 1.35 | 1.00 | 0.72 | b | 3.13 | 1.38 | 3.24 | 4.80 | 0.40 | 1.06 | 0.80 | 0.60 | 18.55 | ||||||||||||
2009 | 0.06 | 0.10 | 0.32 | 0.24 | 1.25 | 0.48 | 4.25 | 1.16 | 1.95 | 1.62 | 0.63 | 0.51 | 12.57 | |||||||||||||
2010 | 0.77 | 1.24 | 1.45 | 0.15 | a | 2.93 | 1.93 | 5.28 | 1.47 | 3.45 | 0.34 | 0.09 | 1.00 | 20.10 | ||||||||||||
2011 | ----- | z | 0.51 | 0.00 | 0.00 | ----- | z | ----- | z | 2.70 | w | 2.86 | r | ----- | z | ----- | z | 0.00 | 2.20 | v | 0.51 | h | ||||
2012 | ----- | z | 0.04 | y | ----- | z | ----- | z | 0.59 | 0.36 | 1.43 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 2.38 | i | |||
2013 | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | a | 1.50 | 3.01 | 2.17 | 6.36 | 0.45 | 0.46 | 0.63 | 14.58 | d | |||||||
2014 | 0.00 | 0.00 | 0.30 | g | 0.39 | 1.30 | 1.96 | 4.23 | 4.71 | 1.72 | 0.59 | 0.95 | 0.52 | 16.37 | a | |||||||||||
2015 | 0.89 | ----- | z | ----- | z | 0.95 | ----- | z | 2.85 | ----- | z | 1.12 | 0.74 | 4.73 | 0.22 | a | 1.39 | 12.89 | d | |||||||
2016 | 0.68 | 0.33 | 0.00 | 1.31 | 1.07 | 0.92 | 1.82 | 4.28 | 1.49 | 0.06 | 1.79 | 0.24 | b | 13.99 | ||||||||||||
2017 | 1.79 | 0.40 | 0.66 | 1.48 | 1.47 | 0.52 | 4.31 | 5.14 | 6.94 | 1.00 | 0.00 | 0.05 | 23.76 | |||||||||||||
2018 | 0.06 | 0.21 | 0.01 | 0.00 | s | 0.59 | 0.49 | 6.42 | 3.07 | 1.41 | 3.72 | 0.40 | 2.10 | 18.48 | a | |||||||||||
2019 | 1.11 | 0.05 | 1.53 | 1.30 | 1.24 | 1.46 | 1.43 | 1.59 | 0.78 | 0.74 | 1.84 | 0.28 | 13.35 | |||||||||||||
2020 | 0.36 | 0.89 | 0.86 | 0.46 | 0.22 | 0.29 | 5.65 | 0.53 | 0.95 | 0.75 | 0.10 | 0.31 | 11.37 | |||||||||||||
2021 | 0.50 | 0.80 | 1.57 | 0.00 | 1.57 | 2.52 | 3.35 | 3.04 | 2.07 | 0.51 | 0.00 | 0.43 | 16.36 | |||||||||||||
2022 | 0.22 | 0.62 | a | 0.12 | 0.00 | 0.12 | 3.81 | 1.87 | 2.78 | 0.19 | 4.10 | 0.10 | 0.08 | 14.01 | ||||||||||||
2023 | 0.33 | 0.58 | 1.40 | 0.38 | 3.95 | 2.20 | 1.16 | 1.20 | 0.71 | 0.52 | 0.71 | 0.78 | 13.92 | |||||||||||||
2024 | 0.09 | 0.20 | 1.68 | 0.00 | n | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.97 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.42 | 0.44 | 0.72 | 0.72 | 0.92 | 1.24 | 2.44 | 2.60 | 1.54 | 1.04 | 0.45 | 0.63 | 14.04 | |||||||||||||
S.D. | 0.52 | 0.52 | 0.89 | 1.08 | 1.06 | 1.04 | 1.61 | 1.64 | 1.74 | 1.22 | 0.60 | 0.78 | 6.04 | |||||||||||||
SKEW | 1.66 | 1.33 | 1.46 | 3.54 | 1.84 | 0.74 | 0.80 | 0.54 | 1.52 | 1.48 | 1.71 | 1.90 | -0.13 | |||||||||||||
MAX | 2.30 | 2.01 | 3.53 | 7.21 | 5.58 | 3.81 | 7.72 | 6.96 | 6.94 | 4.73 | 2.41 | 3.82 | 25.68 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.04 | 0.06 | 0.00 | 0.00 | 0.00 | 0.00 | 0.91 | |||||||||||||
YRS | 68 | 71 | 71 | 69 | 70 | 73 | 71 | 67 | 69 | 69 | 74 | 70 | 52 |