YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1946 | ----- | z | ----- | z | ----- | z | 0.40 | y | 0.00 | 0.00 | 4.80 | 3.46 | 3.04 | 1.46 | 0.38 | 0.34 | 13.48 | d | ||||||||
1947 | 0.21 | 0.17 | 0.19 | 0.01 | 0.89 | 0.00 | 1.65 | 1.89 | 1.11 | 0.04 | 0.92 | 0.51 | 7.59 | |||||||||||||
1948 | 0.00 | 1.34 | 0.50 | 0.00 | 0.00 | 0.14 | 3.88 | 3.64 | 2.87 | 0.19 | 0.02 | 1.34 | 13.92 | |||||||||||||
1949 | 1.47 | f | 0.55 | 0.45 | 0.01 | 0.00 | 0.25 | 3.32 | 2.35 | 1.68 | 0.23 | 0.01 | 1.68 | 10.53 | a | |||||||||||
1950 | 0.46 | 1.07 | 0.41 | 0.00 | 0.00 | 0.15 | 4.74 | 1.54 | 0.01 | 0.00 | 0.00 | 0.01 | 8.39 | |||||||||||||
1951 | 1.96 | 0.13 | 0.14 | b | 1.74 | 0.00 | 0.00 | 4.32 | 2.78 | 0.91 | 2.98 | 0.80 | 1.95 | 17.71 | ||||||||||||
1952 | 1.15 | 0.00 | 2.08 | 1.05 | 0.09 | 1.26 | 1.67 | 2.37 | 0.45 | 0.00 | 1.78 | 1.02 | 12.92 | |||||||||||||
1953 | 0.03 | 1.52 | a | 0.53 | 0.06 | a | 0.00 | 0.04 | 5.41 | 1.40 | 0.00 | 0.00 | 0.06 | 0.07 | 9.12 | |||||||||||
1954 | 1.15 | 0.22 | 2.01 | 0.00 | 0.89 | 1.35 | 6.31 | 5.45 | 1.46 | 0.61 | 0.00 | 0.00 | 19.45 | |||||||||||||
1955 | 1.61 | 0.27 | 0.00 | 0.00 | 0.03 | 0.00 | 4.31 | a | 6.78 | 0.00 | 0.13 | a | 0.07 | 0.31 | 13.51 | |||||||||||
1956 | 0.78 | 0.05 | 0.00 | 0.16 | 0.00 | 0.61 | 5.35 | 0.38 | 0.25 | 0.22 | 0.10 | 0.05 | 7.95 | |||||||||||||
1957 | 2.13 | 0.02 | 0.64 | 0.25 | 0.17 | 0.02 | 1.95 | 3.26 | 0.16 | 1.68 | 0.19 | 0.61 | 11.08 | |||||||||||||
1958 | 0.00 | 0.79 | 2.98 | 0.25 | 0.00 | 1.02 | 2.65 | 5.92 | 1.45 | 0.85 | 0.78 | 0.00 | a | 16.69 | ||||||||||||
1959 | 0.00 | 0.94 | 0.00 | 0.17 | 0.00 | 0.68 | 4.02 | 6.56 | 0.22 | 1.96 | 1.16 | 1.65 | 17.36 | |||||||||||||
1960 | 1.89 | 0.33 | 0.00 | b | 0.00 | 0.00 | 0.06 | 3.28 | 6.20 | 2.81 | 2.28 | 0.00 | 1.03 | 17.88 | ||||||||||||
1961 | 0.82 | 0.19 | 0.23 | 0.00 | 0.00 | 1.91 | 3.11 | 5.21 | 0.70 | 2.82 | 0.43 | 2.29 | 17.71 | |||||||||||||
1962 | 1.95 | 0.32 | 0.47 | 0.00 | 0.00 | 0.54 | 1.18 | 1.25 | 1.52 | 0.04 | 0.30 | 1.77 | 9.34 | |||||||||||||
1963 | 0.61 | 0.74 | 0.45 | 0.40 | 0.01 | 0.00 | 3.05 | 2.79 | 0.59 | 0.00 | 2.78 | 0.29 | 11.71 | |||||||||||||
1964 | 0.05 | 0.15 | 0.75 | 0.23 | 0.00 | 0.93 | 5.26 | 6.83 | 4.36 | 1.43 | 0.86 | 0.51 | 21.36 | |||||||||||||
1965 | 0.41 | 0.83 | 0.30 | 0.41 | 0.00 | 0.20 | 4.04 | 3.23 | 1.49 | 0.00 | 0.73 | 6.42 | 18.06 | |||||||||||||
1966 | 1.60 | 1.93 | 0.03 | 0.04 | 0.12 | 0.36 | 6.44 | 4.78 | 2.88 | 0.00 | 0.79 | 0.23 | 19.20 | |||||||||||||
1967 | 0.10 | 0.17 | 0.29 | 0.36 | 0.32 | 0.25 | 6.86 | 2.94 | 1.91 | 0.46 | 0.47 | 5.31 | 19.44 | |||||||||||||
1968 | 0.97 | 0.94 | 1.10 | 0.32 | 0.00 | 0.00 | 4.95 | 2.36 | 0.20 | 0.21 | 0.57 | 1.13 | 12.75 | |||||||||||||
1969 | 0.36 | 1.20 | 0.29 | 0.04 | 0.40 | 0.00 | 3.50 | 4.18 | 1.73 | 0.02 | 1.34 | ----- | z | 13.06 | a | |||||||||||
1970 | 0.00 | 0.40 | 1.29 | 0.00 | 0.00 | 0.53 | 2.73 | 2.81 | 1.64 | 0.05 | 0.00 | 0.02 | 9.47 | |||||||||||||
1971 | 0.00 | 0.71 | 0.00 | 0.53 | 0.00 | 0.00 | 3.33 | 4.96 | 1.75 | 1.50 | 1.20 | 2.23 | 16.21 | |||||||||||||
1972 | 0.00 | 0.00 | 0.06 | 0.00 | 0.28 | 1.84 | 3.31 | 2.56 | 1.26 | 4.25 | 1.29 | 0.11 | h | 14.85 | a | |||||||||||
1973 | 0.58 | 2.55 | 2.92 | 0.00 | 0.00 | 1.00 | 2.72 | 1.34 | 0.08 | 0.00 | 0.43 | 0.00 | 11.62 | |||||||||||||
1974 | 2.25 | 0.03 | 0.00 | a | 0.00 | 0.00 | 0.29 | 5.63 | 4.68 | 4.00 | 1.74 | 0.50 | 0.10 | 19.22 | ||||||||||||
1975 | 0.62 | 0.03 | 1.18 | 0.49 | 0.00 | 0.01 | 4.70 | 0.67 | 2.05 | 0.00 | 0.97 | 0.55 | 11.27 | |||||||||||||
1976 | 0.17 | 1.43 | 0.46 | 0.98 | 0.20 | 0.28 | 4.43 | 1.69 | 1.73 | 0.21 | 0.29 | 0.16 | 12.03 | |||||||||||||
1977 | 2.22 | 0.02 | 0.43 | 0.17 | 0.00 | 0.08 | 2.74 | 3.11 | 1.16 | 4.09 | 0.36 | 0.98 | 15.36 | |||||||||||||
1978 | 2.01 | 2.10 | 1.53 | 0.03 | 0.22 | 0.11 | 3.29 | 3.15 | 0.92 | 3.43 | 2.82 | 3.57 | 23.18 | |||||||||||||
1979 | 2.77 | 0.81 | 1.35 | 0.00 | 0.51 | 0.89 | 3.43 | 1.89 | 0.23 | 0.08 | 0.32 | 0.35 | 12.63 | |||||||||||||
1980 | 0.42 | 2.02 | 0.80 | 0.01 | 0.05 | 0.09 | 0.64 | 2.50 | 0.79 | 0.03 | 0.00 | 0.14 | 7.49 | |||||||||||||
1981 | 1.47 | 0.69 | 1.92 | 0.09 | 1.00 | 0.02 | 6.89 | 4.07 | 2.00 | 1.11 | 0.74 | 0.00 | 20.00 | |||||||||||||
1982 | 1.08 | a | 0.14 | a | ----- | z | 0.00 | 0.02 | 0.25 | b | 2.22 | a | 3.10 | 1.93 | 0.00 | c | 0.43 | 3.82 | 12.99 | a | ||||||
1983 | 1.91 | 1.16 | b | 3.34 | 0.14 | 0.00 | 0.00 | 3.23 | 4.78 | 6.36 | 6.66 | 0.77 | 0.69 | 29.04 | ||||||||||||
1984 | 1.97 | 0.00 | 0.00 | 0.39 | 0.12 | 1.46 | 10.56 | a | 3.82 | 1.50 | 1.09 | 0.65 | 4.12 | a | 25.68 | |||||||||||
1985 | 2.10 | 1.25 | 0.07 | 0.72 | 0.00 | 0.02 | 5.19 | 2.58 | 2.89 | 1.54 | 0.83 | 0.41 | 17.60 | |||||||||||||
1986 | 0.02 | a | 1.63 | 1.28 | 0.00 | 0.40 | 0.44 | 5.27 | 3.89 | 0.46 | 0.22 | 0.43 | 1.62 | 15.66 | ||||||||||||
1987 | 0.59 | 1.86 | 0.39 | 1.32 | 0.62 | 0.03 | 3.32 | 5.27 | 2.57 | 0.79 | 0.22 | 1.70 | 18.68 | |||||||||||||
1988 | 1.83 | 0.61 | a | 0.47 | 1.19 | 0.00 | 0.02 | 7.05 | 5.08 | a | 0.53 | 1.88 | 0.49 | 0.12 | a | 19.27 | ||||||||||
1989 | 0.79 | 0.05 | 0.79 | a | 0.00 | b | 0.42 | 0.42 | a | 1.47 | 3.40 | 0.17 | 2.26 | 0.28 | 0.41 | 10.46 | ||||||||||
1990 | 0.95 | a | 0.69 | 0.44 | 0.40 | 0.20 | 0.71 | a | 8.05 | a | 4.43 | 3.13 | b | 0.55 | 0.13 | 1.38 | 21.06 | |||||||||
1991 | 1.42 | 2.92 | a | 2.05 | b | 0.00 | a | 0.00 | 0.51 | e | 1.67 | a | 3.77 | 1.36 | y | 0.30 | 0.92 | 2.74 | 16.30 | a | ||||||
1992 | 2.52 | 1.39 | 4.04 | 0.77 | 1.03 | b | 0.00 | 3.46 | 5.53 | 0.62 | 0.05 | 0.00 | a | 5.47 | v | 19.41 | a | |||||||||
1993 | 7.09 | r | 2.60 | d | 0.59 | 0.00 | 0.52 | 0.47 | 2.89 | a | 8.17 | p | 0.95 | ----- | z | 0.95 | x | 0.19 | 8.21 | d | ||||||
1994 | ----- | z | 1.24 | y | 0.95 | x | 2.03 | a | 0.11 | 0.94 | 0.41 | v | 8.84 | l | 3.81 | v | 0.34 | w | 3.65 | v | 4.89 | v | 3.08 | i | ||
1995 | 1.61 | u | 1.84 | t | ----- | z | ----- | z | 0.00 | 0.00 | 1.24 | ----- | z | 2.57 | s | 1.50 | ----- | z | 0.80 | e | 3.54 | g | ||||
1996 | 0.00 | 0.77 | ----- | z | 0.00 | 0.00 | ----- | z | 4.16 | u | 3.39 | r | 1.02 | x | 0.80 | 2.31 | 0.00 | 3.88 | e | |||||||
1997 | 1.38 | 1.25 | 0.12 | 0.88 | ----- | z | 0.00 | 2.32 | 6.09 | n | 2.73 | a | 0.00 | b | ----- | z | 3.18 | 11.86 | c | |||||||
1998 | 0.07 | 4.22 | 1.64 | 0.02 | 0.00 | 0.06 | 5.08 | 1.88 | 1.19 | 1.37 | 0.17 | 0.37 | 16.07 | |||||||||||||
1999 | 0.00 | 0.00 | 0.22 | 1.24 | 0.00 | 0.58 | 4.18 | 2.91 | 0.79 | 0.00 | 0.00 | 0.00 | 9.92 | |||||||||||||
2000 | 0.05 | 0.35 | 1.44 | b | 0.00 | 0.00 | 3.20 | 1.21 | 3.39 | 0.83 | 7.33 | 1.42 | 0.01 | 19.23 | ||||||||||||
2001 | 1.52 | 0.41 | 0.94 | 1.54 | 0.20 | 0.82 | 4.43 | 2.45 | 1.20 | 1.15 | 0.22 | 1.74 | 16.62 | |||||||||||||
2002 | 0.18 | 0.15 | 0.07 | 0.00 | 0.00 | 0.00 | 2.41 | 3.15 | 2.45 | 0.00 | ----- | z | 0.92 | 9.33 | a | |||||||||||
2003 | 0.09 | 1.66 | 0.71 | 0.12 | 0.10 | 0.00 | 3.49 | 1.27 | 2.56 | 1.10 | 1.05 | 0.02 | 12.17 | |||||||||||||
2004 | 0.87 | 0.79 | 0.72 | 1.38 | 0.00 | 0.00 | a | 3.08 | 1.90 | 0.42 | 0.41 | 0.18 | a | 1.00 | 10.75 | |||||||||||
2005 | 2.07 | 1.34 | 0.48 | 0.20 | 0.51 | 0.36 | 3.82 | 3.66 | a | 0.37 | 0.58 | 0.00 | 0.00 | 13.39 | ||||||||||||
2006 | 0.00 | 0.20 | 1.05 | 0.04 | 0.00 | 1.39 | c | 8.41 | b | 4.67 | 2.32 | a | 0.37 | a | 0.00 | l | 0.15 | 18.60 | a | |||||||
2007 | 0.68 | 0.06 | 0.61 | 0.15 | 0.00 | 0.12 | 4.20 | 4.11 | e | 1.69 | 0.29 | 0.00 | a | 1.82 | a | 13.73 | ||||||||||
2008 | 0.40 | 0.00 | q | 0.30 | 0.00 | 0.35 | 1.69 | 6.41 | 4.74 | 1.61 | 0.41 | 0.82 | 0.25 | 16.98 | a | |||||||||||
2009 | 0.55 | 0.48 | 0.06 | 0.07 | 0.38 | 0.28 | 4.82 | 2.41 | 1.68 | 0.17 | 0.00 | 0.23 | 11.13 | |||||||||||||
2010 | 3.86 | 1.09 | 0.65 | 0.74 | 0.00 | 0.00 | 6.01 | 2.64 | 1.20 | 1.58 | 0.00 | 0.83 | 18.60 | |||||||||||||
2011 | 0.00 | 0.27 | 0.04 | 0.13 | 0.00 | 0.00 | 3.08 | 2.85 | 2.56 | 0.01 | 0.58 | 2.50 | a | 12.02 | ||||||||||||
2012 | 0.11 | 0.37 | 0.55 | 0.00 | 0.95 | 0.92 | 2.61 | 1.41 | 2.49 | 0.00 | 0.22 | 1.74 | a | 11.37 | ||||||||||||
2013 | 0.56 | 0.91 | 0.42 | 0.00 | 0.00 | 0.00 | 4.43 | 3.11 | 1.52 | e | 0.00 | 2.16 | 0.59 | c | 13.70 | |||||||||||
2014 | 0.00 | 0.25 | 1.77 | 0.00 | 0.00 | 0.00 | 5.01 | 3.48 | 3.11 | 1.77 | 0.41 | 1.11 | a | 16.91 | ||||||||||||
2015 | 2.03 | 0.90 | 0.22 | 1.01 | 0.05 | 1.29 | 5.83 | 2.52 | 5.98 | 1.92 | 0.51 | a | 0.29 | 22.55 | ||||||||||||
2016 | 1.68 | 0.42 | 0.50 | 0.39 | 0.00 | a | 0.80 | 2.76 | 4.08 | 4.62 | 0.00 | 0.14 | 1.72 | 17.11 | ||||||||||||
2017 | 1.47 | 0.25 | 0.31 | 0.20 | 0.40 | 0.02 | 4.80 | 1.25 | 0.69 | 0.01 | 0.12 | 0.56 | 10.08 | |||||||||||||
2018 | 0.03 | 2.66 | 0.00 | 0.00 | 0.00 | 0.52 | 4.02 | 3.71 | 0.55 | a | 5.67 | 0.26 | 0.85 | a | 18.27 | |||||||||||
2019 | 0.73 | 2.32 | 1.06 | 0.00 | 0.02 | 0.01 | 2.23 | 5.84 | 1.85 | 0.00 | 3.77 | 1.65 | 19.48 | |||||||||||||
2020 | 0.86 | 1.27 | 1.17 | a | 0.24 | 0.00 | 0.14 | 4.60 | 4.67 | 0.33 | 0.00 | 0.21 | 0.45 | 13.94 | ||||||||||||
2021 | 1.21 | 0.00 | 0.12 | 0.00 | 0.00 | 0.00 | 8.22 | a | 4.91 | 1.88 | 0.00 | a | 0.00 | 0.39 | 16.73 | |||||||||||
2022 | 0.62 | 0.20 | 0.72 | 0.00 | 0.00 | 3.06 | 3.11 | 7.54 | 2.94 | 0.64 | 0.22 | 1.54 | c | 20.59 | ||||||||||||
2023 | 0.61 | 1.10 | 1.10 | 0.00 | 0.14 | 0.00 | ----- | z | 3.59 | s | 1.47 | 1.12 | 0.00 | 1.93 | 7.47 | b | ||||||||||
2024 | 2.56 | a | 2.14 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 4.70 | j | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.95 | 0.86 | 0.77 | 0.30 | 0.15 | 0.46 | 4.08 | 3.49 | 1.64 | 1.02 | 0.60 | 1.09 | 15.38 | |||||||||||||
S.D. | 0.88 | 0.85 | 0.84 | 0.47 | 0.26 | 0.66 | 1.87 | 1.58 | 1.31 | 1.51 | 0.74 | 1.26 | 4.64 | |||||||||||||
SKEW | 0.80 | 1.38 | 1.80 | 1.83 | 1.98 | 2.14 | 0.82 | 0.40 | 1.33 | 2.32 | 2.14 | 1.96 | 0.37 | |||||||||||||
MAX | 3.86 | 4.22 | 4.04 | 2.03 | 1.03 | 3.20 | 10.56 | 7.54 | 6.36 | 7.33 | 3.77 | 6.42 | 29.04 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.64 | 0.38 | 0.00 | 0.00 | 0.00 | 0.00 | 7.49 | |||||||||||||
YRS | 74 | 75 | 73 | 76 | 77 | 77 | 75 | 72 | 74 | 76 | 72 | 74 | 62 |