YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1942 | 0.15 | 0.25 | 0.15 | 2.60 | i | 0.00 | 0.80 | 0.55 | 7.64 | 2.24 | 2.29 | 0.00 | 0.34 | 14.41 | a | |||||||||||
1943 | 0.05 | 0.00 | 0.50 | 0.00 | 1.12 | 3.47 | ----- | z | 0.06 | 0.13 | 0.00 | 0.32 | ----- | z | 5.65 | b | ||||||||||
1944 | 0.05 | 0.00 | 0.10 | 0.00 | 0.35 | 0.09 | 0.79 | 1.49 | 1.61 | 2.16 | 0.57 | 0.56 | b | 7.77 | ||||||||||||
1945 | 0.76 | 0.03 | 0.02 | a | 0.10 | 0.25 | 0.00 | 0.85 | 2.40 | 0.85 | 0.34 | 0.00 | 0.04 | 5.64 | ||||||||||||
1946 | 0.30 | 0.03 | 0.20 | 0.28 | 0.00 | 0.85 | 1.78 | 1.40 | 1.99 | 1.13 | 0.27 | 0.59 | 8.82 | |||||||||||||
1947 | 0.54 | c | 0.00 | 0.74 | 0.61 | 1.76 | 0.00 | 0.44 | 0.90 | a | 0.18 | f | 1.12 | g | 0.59 | j | 0.68 | l | 4.99 | d | ||||||
1948 | 1.08 | 1.35 | 0.66 | 0.27 | 0.45 | 2.07 | 2.20 | 2.09 | 0.37 | 0.50 | 0.15 | 0.17 | 11.36 | |||||||||||||
1949 | 1.37 | a | 0.31 | 0.00 | 0.42 | 2.37 | 1.65 | 2.60 | 2.23 | 2.77 | 0.26 | 0.28 | 0.12 | 14.38 | ||||||||||||
1950 | 0.00 | 0.27 | 0.00 | 0.00 | 0.16 | 1.87 | 2.07 | 1.38 | 1.62 | 0.24 | 0.00 | 0.05 | 7.66 | |||||||||||||
1951 | 0.27 | 0.20 | 0.19 | 0.14 | 0.28 | 0.34 | 0.90 | 2.32 | 0.00 | 1.20 | 0.27 | 0.67 | 6.78 | |||||||||||||
1952 | 0.13 | 0.16 | 0.32 | 0.68 | 0.15 | 1.75 | 3.40 | 2.85 | 1.34 | 0.00 | 0.87 | 0.21 | 11.86 | |||||||||||||
1953 | 0.14 | 0.12 | 0.07 | 0.21 | 0.88 | 1.09 | 1.50 | 0.66 | 0.00 | 0.68 | 0.55 | 0.18 | a | 6.08 | ||||||||||||
1954 | 0.05 | 0.00 | 0.10 | 0.67 | 1.00 | 0.35 | 1.05 | 2.67 | 1.71 | 3.65 | 0.00 | 0.00 | 11.25 | |||||||||||||
1955 | 0.11 | 0.06 | 0.05 | 0.30 | 0.15 | 0.00 | 3.06 | 3.09 | 2.41 | 0.36 | 0.00 | 0.11 | 9.70 | |||||||||||||
1956 | 0.01 | 0.78 | 0.00 | 0.00 | 0.35 | 0.27 | 2.91 | 1.28 | 0.10 | 0.00 | 0.12 | 0.04 | 5.86 | |||||||||||||
1957 | 0.00 | 0.48 | 1.14 | 0.79 | 2.01 | 0.07 | 0.79 | 3.09 | 0.39 | 1.90 | 0.60 | 0.00 | 11.26 | |||||||||||||
1958 | 1.27 | 0.06 | 2.48 | 1.33 | 0.56 | 1.69 | 1.98 | 4.43 | a | 5.21 | 1.08 | 0.00 | 0.57 | 20.66 | ||||||||||||
1959 | 0.02 | 0.08 | 0.02 | 0.99 | 4.26 | 1.91 | 0.51 | 1.60 | 0.02 | 1.35 | 0.00 | 2.23 | 12.99 | |||||||||||||
1960 | 0.78 | 0.12 | 0.18 | 0.00 | 0.68 | 1.54 | 7.44 | 0.17 | 0.61 | 4.82 | 0.00 | 1.70 | 18.04 | |||||||||||||
1961 | 0.39 | 0.04 | 1.04 | 1.31 | 0.25 | 2.48 | 1.12 | 1.06 | 1.25 | 0.73 | 0.80 | 0.90 | 11.37 | |||||||||||||
1962 | 0.24 | 0.00 | 0.30 | 0.20 | 0.00 | 1.85 | 5.06 | 0.24 | 2.09 | 0.11 | 1.45 | 0.70 | 12.24 | |||||||||||||
1963 | 0.26 | 1.10 | 0.06 | 0.31 | 0.65 | 2.82 | 0.60 | 2.14 | b | 0.50 | 0.72 | 0.00 | 0.00 | 9.16 | ||||||||||||
1964 | 0.15 | 1.10 | 0.57 | 0.00 | 0.47 | 0.18 | 0.61 | 0.85 | 1.23 | 0.00 | 0.65 | 0.13 | 5.94 | |||||||||||||
1965 | 0.00 | 0.41 | 0.38 | 0.46 | 3.86 | 2.49 | 1.15 | 1.54 | 3.23 | 0.20 | 0.00 | 0.57 | 14.29 | |||||||||||||
1966 | 0.47 | 0.00 | 0.00 | 0.10 | 0.77 | 2.24 | 1.86 | 7.65 | 1.18 | 0.00 | 0.00 | 0.25 | 14.52 | |||||||||||||
1967 | 0.00 | 0.14 | 0.09 | 0.00 | 0.00 | 1.78 | 3.23 | 2.33 | 1.28 | 0.14 | 0.46 | 0.72 | 10.17 | |||||||||||||
1968 | 1.05 | 0.53 | 2.31 | 0.56 | 1.05 | 0.02 | 6.37 | 2.12 | 0.37 | 0.84 | 0.42 | 0.00 | 15.64 | |||||||||||||
1969 | 0.00 | 0.91 | 0.66 | 0.71 | 1.13 | 3.12 | 3.05 | 3.08 | 4.61 | 2.47 | 0.23 | 1.44 | 21.41 | |||||||||||||
1970 | 0.00 | 0.00 | 0.40 | 1.52 | 0.30 | 1.08 | 2.69 | 0.92 | 2.56 | 0.85 | 0.11 | 0.00 | 10.43 | |||||||||||||
1971 | 0.91 | 0.45 | 0.35 | 0.31 | 0.17 | 0.11 | 2.12 | 5.62 | 1.92 | 1.65 | 1.15 | 0.88 | 15.64 | |||||||||||||
1972 | 0.10 | 0.08 | 0.00 | 0.00 | 2.36 | 1.49 | 4.26 | 8.65 | 2.30 | 2.47 | 0.82 | ----- | z | 22.53 | a | |||||||||||
1973 | 0.85 | a | 0.77 | 1.08 | 0.63 | 0.90 | 0.57 | 4.68 | 0.53 | h | 0.14 | a | 0.48 | 0.00 | 0.08 | 10.18 | a | |||||||||
1974 | ----- | z | 0.05 | 0.00 | a | 0.05 | 0.00 | 0.65 | 1.33 | 1.29 | 2.98 | 3.07 | 0.37 | 0.69 | 10.48 | a | ||||||||||
1975 | 0.41 | 1.00 | 0.61 | 0.25 | 0.11 | 0.22 | 2.20 | 1.08 | 3.89 | 0.00 | 0.52 | 0.09 | 10.38 | |||||||||||||
1976 | 0.03 | v | ----- | z | 0.00 | 0.93 | 0.98 | 1.94 | 3.48 | 1.61 | 2.75 | 0.47 | 0.39 | 0.00 | 12.55 | b | ||||||||||
1977 | 0.32 | 0.95 | 0.57 | 2.73 | 0.45 | 0.41 | 1.62 | 6.04 | 0.72 | 3.24 | 0.76 | 0.00 | 17.81 | |||||||||||||
1978 | 0.65 | 0.45 | 0.46 | 0.27 | 3.02 | 4.12 | 1.21 | 1.72 | 1.69 | 1.41 | 1.74 | 0.85 | 17.59 | |||||||||||||
1979 | 0.69 | 0.46 | 0.29 | 0.82 | 2.27 | 3.34 | 2.13 | ----- | z | 1.09 | 0.85 | 0.18 | 0.57 | 12.69 | a | |||||||||||
1980 | ----- | z | 0.87 | 0.02 | 0.66 | 1.53 | 0.00 | 0.27 | 3.49 | 4.52 | 0.03 | 0.49 | 0.21 | 12.09 | a | |||||||||||
1981 | 0.27 | 0.00 | 1.42 | 0.43 | 1.84 | 0.71 | 1.97 | 3.62 | 1.18 | 1.02 | a | 0.42 | 0.00 | 12.88 | ||||||||||||
1982 | 0.50 | 0.33 | ----- | z | 0.03 | 1.02 | 0.34 | b | 1.48 | e | 2.33 | 3.25 | 1.52 | 1.34 | f | 1.31 | d | 12.11 | b | |||||||
1983 | 0.95 | 0.64 | 0.73 | 1.52 | 0.44 | 0.29 | 0.81 | 0.28 | 0.88 | 1.92 | b | 0.84 | 0.33 | c | 9.63 | |||||||||||
1984 | 0.58 | 0.13 | 0.21 | 0.00 | c | 1.96 | a | 2.61 | a | 0.63 | 3.97 | a | 1.16 | a | 2.65 | 1.98 | c | 0.70 | 16.58 | |||||||
1985 | 1.18 | 0.06 | 1.23 | 1.87 | a | 0.97 | c | 3.61 | 1.58 | a | 2.56 | d | 2.01 | b | 6.94 | a | 0.15 | b | 0.17 | 22.33 | ||||||
1986 | 0.32 | 2.21 | b | 0.72 | 0.10 | 1.91 | b | 4.17 | b | 1.14 | 5.79 | 2.37 | 2.84 | 2.19 | a | 1.52 | 25.28 | |||||||||
1987 | 1.50 | a | 1.74 | c | 0.24 | d | 0.36 | 1.58 | 2.26 | a | 0.15 | a | 2.60 | 1.84 | 0.11 | a | 0.33 | 1.33 | 14.04 | |||||||
1988 | 0.08 | 0.23 | 0.00 | 1.94 | 1.68 | 2.28 | 2.48 | a | 1.31 | 2.30 | 0.30 | 0.20 | 0.91 | 13.71 | ||||||||||||
1989 | 0.00 | a | 0.49 | 0.47 | a | 0.44 | 0.43 | 0.35 | 1.44 | 5.03 | b | 0.22 | 0.00 | 0.07 | 0.22 | b | 9.16 | |||||||||
1990 | 0.72 | 0.80 | 0.78 | 1.07 | a | 0.90 | 0.00 | 2.53 | 4.12 | d | 1.84 | a | 0.59 | ----- | z | 0.32 | 13.67 | a | ||||||||
1991 | 0.91 | 0.00 | 0.00 | 0.00 | 0.74 | 0.00 | a | 5.99 | 1.93 | a | 2.71 | 0.31 | b | 1.39 | 2.00 | 15.98 | ||||||||||
1992 | 1.00 | 0.00 | 0.65 | 1.42 | 3.49 | b | 2.28 | d | 0.82 | 0.46 | a | 0.19 | 0.00 | 0.51 | 0.89 | a | 11.71 | |||||||||
1993 | 0.91 | a | 0.25 | a | 0.90 | a | 0.12 | 0.95 | 0.93 | 1.65 | 2.35 | b | 2.20 | a | 0.75 | 0.69 | 0.00 | 11.70 | ||||||||
1994 | 0.00 | c | 0.00 | 1.45 | 0.00 | b | 3.63 | 0.28 | 0.66 | c | 1.36 | 0.61 | 1.28 | 0.00 | b | 0.51 | 9.78 | |||||||||
1995 | 0.24 | 0.00 | 0.43 | 0.28 | 1.17 | 0.66 | 2.95 | 0.99 | 2.62 | 0.00 | 0.00 | 1.11 | 10.45 | |||||||||||||
1996 | 0.05 | 1.85 | 0.00 | 0.00 | 0.00 | 4.21 | 1.28 | 1.04 | h | 1.78 | 0.86 | 0.00 | 0.00 | i | 10.03 | b | ||||||||||
1997 | 1.38 | d | 0.35 | 0.10 | c | 6.12 | c | 0.94 | 3.00 | b | 0.00 | e | 0.00 | n | 1.63 | d | 0.59 | 0.00 | f | 2.60 | g | 14.11 | c | |||
1998 | 0.00 | a | 0.35 | a | 1.23 | i | 1.37 | a | 0.00 | ----- | z | 0.74 | 1.40 | 0.07 | d | 4.70 | 0.00 | 0.70 | 9.33 | b | ||||||
1999 | ----- | z | 0.00 | 1.20 | g | 6.10 | e | 1.36 | 1.83 | ----- | z | 0.00 | r | 0.00 | g | 0.00 | 0.00 | 0.00 | g | 9.29 | f | |||||
2000 | 0.00 | 0.00 | 0.00 | 0.14 | 0.00 | 4.16 | 0.00 | 0.00 | 0.00 | 5.11 | b | 0.00 | c | 1.01 | 10.42 | |||||||||||
2001 | 1.65 | d | 0.37 | 2.26 | 0.00 | 0.00 | 1.70 | 0.06 | 1.10 | b | 0.82 | 0.25 | 2.00 | 0.30 | 10.51 | |||||||||||
2002 | 0.65 | a | 0.00 | 0.37 | 0.57 | 0.00 | 1.16 | 1.62 | 1.40 | 5.56 | 2.30 | a | 0.00 | 0.40 | b | 14.03 | ||||||||||
2003 | 0.00 | 0.11 | a | 0.32 | 0.00 | 0.00 | 2.04 | 0.00 | 1.19 | 0.16 | 1.03 | 0.50 | 0.10 | 5.45 | ||||||||||||
2004 | 0.50 | 2.44 | b | 0.00 | b | 3.74 | 0.00 | 0.70 | b | 1.59 | b | ----- | z | 2.00 | b | 3.86 | a | 0.83 | g | 0.60 | e | 15.43 | b | |||
2005 | 1.18 | c | 1.20 | a | 1.11 | a | 0.93 | 2.28 | e | 0.63 | 0.75 | 2.55 | b | 2.02 | 0.72 | 0.00 | 0.00 | 13.37 | ||||||||
2006 | 0.00 | 0.00 | 0.10 | 0.40 | 0.20 | 0.03 | 1.12 | 2.92 | a | 1.41 | 1.27 | 0.01 | 1.28 | b | 8.74 | |||||||||||
2007 | 1.04 | 0.17 | 1.26 | 0.49 | 1.51 | 1.10 | 1.23 | a | 0.49 | 0.90 | 0.00 | a | 0.08 | 0.74 | 9.01 | |||||||||||
2008 | 0.02 | 0.25 | 0.45 | 0.00 | 1.44 | 0.00 | 3.63 | 0.97 | 1.44 | 1.64 | 0.25 | 0.06 | 10.15 | |||||||||||||
2009 | ----- | z | 0.00 | 0.45 | 0.18 | 0.35 | 0.58 | a | 3.18 | 0.38 | 0.57 | 0.83 | 0.50 | 0.46 | 7.48 | a | ||||||||||
2010 | 0.58 | 0.86 | 1.41 | 0.82 | 0.60 | 1.37 | 2.04 | 2.02 | 1.01 | 2.07 | 0.01 | e | 0.15 | 12.94 | ||||||||||||
2011 | 0.00 | 0.15 | y | 0.00 | 0.00 | 0.00 | 0.00 | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | ----- | z | 0.00 | f | ||||||
2012 | 0.00 | ----- | z | ----- | z | 0.00 | 0.00 | 0.00 | 1.53 | 0.60 | 0.00 | a | 0.00 | ----- | z | ----- | z | 2.13 | d | |||||||
2013 | 0.00 | c | ----- | z | ----- | z | 0.00 | 0.00 | ----- | z | 1.99 | 0.47 | 4.35 | 0.31 | 0.13 | 0.60 | 7.85 | c | ||||||||
2014 | 0.00 | ----- | z | 0.00 | 0.00 | 3.15 | 0.00 | 2.20 | d | ----- | z | 2.59 | 0.26 | ----- | z | 0.00 | 8.20 | c | ||||||||
2015 | 1.60 | 0.00 | b | 0.52 | 0.17 | 2.07 | 2.26 | 4.15 | 0.97 | 0.00 | 3.80 | 0.00 | 0.30 | d | 15.84 | |||||||||||
2016 | 0.50 | 0.00 | 0.00 | ----- | z | ----- | z | 0.65 | ----- | z | 1.08 | 1.71 | 0.00 | 2.64 | 0.28 | 6.86 | c | |||||||||
2017 | 0.71 | 0.00 | 0.98 | 1.23 | ----- | z | 2.03 | 3.24 | 1.52 | 2.08 | 4.87 | 0.00 | 0.00 | u | 16.66 | b | ||||||||||
2018 | 0.00 | 0.00 | 0.00 | 0.00 | 2.10 | 0.63 | 0.34 | 0.94 | 3.24 | 2.59 | 0.00 | 0.68 | 10.52 | |||||||||||||
2019 | 0.00 | 0.00 | 0.15 | 0.92 | 0.44 | 0.89 | 1.71 | 0.65 | 0.89 | 1.38 | 0.86 | 0.30 | 8.19 | |||||||||||||
2020 | 0.46 | 0.56 | 0.67 | 0.43 | 0.00 | 0.17 | 2.12 | 0.61 | 0.49 | 0.54 | 0.11 | 0.05 | 6.21 | |||||||||||||
2021 | 0.18 | 0.04 | 0.74 | 0.55 | 1.65 | 2.65 | 1.78 | 3.51 | 1.56 | 0.79 | 0.00 | 0.00 | 13.45 | |||||||||||||
2022 | 0.07 | 0.13 | 0.11 | 0.00 | 0.30 | 1.78 | 1.26 | 5.28 | 0.45 | 3.30 | 0.57 | 0.57 | 13.82 | |||||||||||||
2023 | 0.29 | 0.07 | 0.00 | 0.00 | 1.90 | 2.53 | 2.11 | 1.41 | 0.81 | 0.80 | 0.21 | 1.80 | 11.93 | |||||||||||||
2024 | 0.44 | 0.40 | 0.00 | 0.00 | l | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.84 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.44 | 0.38 | 0.47 | 0.65 | 1.00 | 1.34 | 1.92 | 2.21 | 1.60 | 1.32 | 0.42 | 0.51 | 12.11 | |||||||||||||
S.D. | 0.46 | 0.53 | 0.56 | 1.10 | 1.03 | 1.20 | 1.47 | 1.84 | 1.28 | 1.47 | 0.57 | 0.53 | 4.26 | |||||||||||||
SKEW | 0.92 | 1.98 | 1.71 | 3.48 | 1.21 | 0.71 | 1.44 | 1.55 | 0.97 | 1.54 | 1.98 | 1.28 | 0.81 | |||||||||||||
MAX | 1.65 | 2.44 | 2.48 | 6.12 | 4.26 | 4.21 | 7.44 | 8.65 | 5.56 | 6.94 | 2.64 | 2.23 | 25.28 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 5.45 | |||||||||||||
YRS | 78 | 78 | 78 | 80 | 80 | 80 | 78 | 74 | 79 | 80 | 75 | 73 | 59 |