YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.16 | 0.11 | 0.79 | 1.06 | i | |||
1938 | 0.35 | 1.57 | 2.54 | 0.54 | 3.08 | 0.27 | 0.48 | 0.58 | 0.15 | 1.61 | 1.93 | 1.38 | 14.48 | |||||||||||||
1939 | 1.08 | 0.63 | 1.25 | 0.50 | 0.84 | 0.42 | 0.60 | 1.60 | 1.62 | 1.49 | 0.67 | 0.08 | 10.78 | |||||||||||||
1940 | 1.31 | 1.02 | 0.75 | a | 1.30 | 0.04 | 0.40 | 0.06 | 0.50 | 1.99 | 1.62 | 0.83 | 0.51 | 10.33 | ||||||||||||
1941 | 0.51 | 0.39 | 1.12 | 3.70 | 0.55 | 2.25 | 1.12 | 2.59 | 1.25 | 3.88 | 0.68 | 1.66 | 19.70 | |||||||||||||
1942 | 0.66 | 0.97 | 2.42 | 0.54 | 0.79 | 0.00 | 0.18 | 0.71 | 0.00 | 1.16 | 0.76 | 0.28 | 8.47 | |||||||||||||
1943 | 1.26 | 1.41 | 1.15 | 2.04 | 0.13 | 1.74 | 0.79 | 0.93 | 0.36 | 0.95 | 1.40 | 2.11 | t | 12.16 | a | |||||||||||
1944 | 1.49 | 1.34 | 2.25 | 1.85 | 0.46 | 1.61 | ----- | z | ----- | z | ----- | z | 0.00 | ----- | z | 0.39 | a | 9.39 | d | |||||||
1945 | 1.56 | a | 3.69 | 2.80 | 3.00 | a | 0.18 | 1.44 | 1.02 | 1.83 | 1.06 | 1.10 | 0.73 | 0.29 | 18.70 | |||||||||||
1946 | 0.30 | 0.52 | 1.93 | b | 1.42 | 1.97 | 0.00 | 1.22 | 1.04 | 0.00 | 2.81 | 5.36 | c | 1.43 | a | 18.00 | ||||||||||
1947 | 0.39 | a | 0.24 | 0.62 | 1.97 | 1.81 | 0.37 | 0.31 | 1.18 | 0.10 | 0.74 | 1.28 | a | 2.93 | 11.94 | |||||||||||
1948 | 0.07 | 2.21 | 0.94 | 1.06 | a | 0.43 | 1.26 | 0.06 | 0.91 | 0.24 | 0.64 | 0.23 | 1.25 | 9.30 | ||||||||||||
1949 | 3.78 | a | ----- | z | 1.19 | h | 0.24 | 0.90 | 1.41 | 0.92 | 0.71 | 0.59 | 1.57 | ----- | z | ----- | z | 10.12 | d | |||||||
1950 | ----- | z | ----- | z | 0.53 | u | 0.32 | 1.87 | 0.07 | a | 1.67 | ----- | z | 0.08 | 0.75 | 0.43 | 0.15 | 5.34 | d | |||||||
1951 | 0.65 | 0.68 | 1.38 | 0.77 | 1.52 | 0.38 | o | 1.05 | 1.25 | 0.10 | 1.51 | 2.96 | 3.41 | 15.28 | a | |||||||||||
1952 | 1.99 | 0.49 | 3.25 | 1.58 | 1.09 | 0.69 | 0.50 | 1.62 | 0.38 | 0.00 | 0.79 | 0.39 | 12.77 | |||||||||||||
1953 | 0.43 | 0.19 | 0.39 | 0.45 | 0.74 | 0.28 | 1.02 | 0.46 | 0.18 | 2.90 | 0.20 | 0.13 | 7.37 | |||||||||||||
1954 | 3.15 | 1.39 | 2.96 | 0.48 | 0.84 | 0.23 | 1.25 | 0.17 | 1.21 | 0.63 | 1.24 | 0.54 | 14.09 | |||||||||||||
1955 | 1.53 | 1.59 | 0.32 | 0.53 | 1.65 | 0.92 | 1.64 | 1.42 | 0.42 | 0.44 | 0.96 | 3.02 | 14.44 | |||||||||||||
1956 | 1.04 | 1.46 | 0.41 | 1.53 | 1.44 | 0.04 | 1.12 | 0.03 | 0.12 | 1.14 | 0.05 | 0.75 | 9.13 | |||||||||||||
1957 | 1.86 | 0.21 | 0.67 | 0.76 | 4.74 | 0.72 | 0.32 | 0.29 | 0.00 | 1.90 | 2.57 | 0.66 | 14.70 | |||||||||||||
1958 | 0.13 | 0.76 | 2.83 | 0.87 | 0.29 | 0.04 | 0.30 | 1.56 | 0.92 | 0.00 | 1.87 | 0.05 | 9.62 | |||||||||||||
1959 | 0.22 | 1.16 | 1.25 | 0.30 | 2.11 | 0.02 | 0.28 | 1.82 | 1.44 | 0.93 | 0.00 | 1.16 | 10.69 | |||||||||||||
1960 | 1.11 | 1.06 | 0.87 | 0.81 | 0.64 | 0.56 | 0.64 | 0.20 | 0.36 | 1.88 | 3.40 | 0.32 | 11.85 | |||||||||||||
1961 | 0.26 | 0.62 | 1.90 | 0.64 | 0.94 | 0.12 | 0.42 | 2.04 | 1.20 | 3.00 | 0.67 | 0.43 | 12.24 | |||||||||||||
1962 | 1.07 | 3.59 | 1.19 | 0.15 | 1.69 | 0.84 | 0.22 | 0.05 | 0.24 | 0.89 | 0.01 | 0.38 | 10.32 | |||||||||||||
1963 | 0.18 | 1.24 | 2.30 | 2.64 | 0.09 | 2.75 | 0.03 | 1.23 | 2.11 | 0.72 | 1.10 | 0.48 | 14.87 | |||||||||||||
1964 | 0.76 | 0.29 | 1.76 | 3.02 | 2.62 | 1.20 | 0.01 | 1.51 | 0.04 | 0.61 | 2.15 | 2.11 | a | 16.08 | ||||||||||||
1965 | 0.74 | 0.44 | 0.98 | 0.95 | 1.40 | 0.26 | 1.84 | 3.71 | 2.29 | 0.24 | 1.06 | 1.97 | 15.88 | |||||||||||||
1966 | 0.30 | 0.61 | 0.26 | 0.45 | 0.20 | 0.22 | 0.11 | 2.02 | 2.69 | 0.54 | 0.25 | 3.45 | 11.10 | |||||||||||||
1967 | 0.93 | 0.14 | 0.85 | 2.65 | 1.69 | 3.07 | 0.59 | 1.39 | 2.30 | 0.13 | 0.81 | 1.13 | 15.68 | |||||||||||||
1968 | 0.31 | 1.39 | 0.84 | 0.87 | 0.53 | 1.05 | 2.14 | 0.96 | 0.02 | 1.23 | 0.62 | 0.47 | 10.43 | |||||||||||||
1969 | 2.48 | 3.38 | 1.50 | 0.77 | 0.02 | 3.38 | 0.97 | 0.60 | 0.72 | 1.22 | 0.67 | 1.07 | 16.78 | |||||||||||||
1970 | 0.08 | 0.14 | 1.46 | 2.25 | 0.00 | 2.35 | 1.72 | 1.05 | 0.74 | 0.27 | 1.49 | 1.13 | 12.68 | |||||||||||||
1971 | 0.83 | 1.13 | 0.32 | 2.77 | 1.88 | 0.16 | 1.00 | 1.00 | 0.44 | 1.64 | 0.34 | 1.96 | 13.47 | |||||||||||||
1972 | 0.12 | 0.09 | 0.04 | 1.75 | 0.08 | 1.30 | 0.52 | 1.22 | 1.75 | 1.08 | 1.38 | 1.49 | 10.82 | |||||||||||||
1973 | 0.80 | 1.76 | 4.96 | 1.93 | 0.19 | 0.62 | 2.06 | 0.34 | 0.04 | 1.03 | 2.39 | 0.31 | 16.43 | |||||||||||||
1974 | 1.20 | 0.15 | 0.83 | 0.38 | 0.06 | 0.00 | 0.77 | 0.03 | 0.01 | 2.55 | 0.95 | 0.47 | 7.40 | |||||||||||||
1975 | 0.60 | 0.73 | 2.75 | 1.62 | 1.88 | 0.63 | 1.57 | 0.45 | 0.95 | 1.57 | 1.05 | 0.21 | 14.01 | |||||||||||||
1976 | 0.03 | 1.53 | 1.57 | 0.37 | 1.00 | 0.07 | 0.98 | 0.45 | 1.32 | 0.70 | 0.00 | 0.00 | 8.02 | |||||||||||||
1977 | 0.29 | a | 0.15 | 1.02 | 0.05 | 1.69 | 0.52 | 1.76 | 2.22 | 0.63 | 0.47 | 0.20 | 0.46 | 9.46 | ||||||||||||
1978 | 0.34 | 1.58 | 1.21 | 2.99 | 0.66 | 0.00 | 0.17 | 1.51 | 2.06 | 0.81 | 2.09 | 0.51 | 13.93 | |||||||||||||
1979 | 1.26 | 0.84 | 2.27 | 0.03 | 1.68 | 0.05 | 0.44 | 0.40 | 0.08 | 1.62 | 0.04 | 0.01 | 8.72 | |||||||||||||
1980 | 2.80 | 0.81 | 1.45 | 0.84 | 3.60 | 0.34 | 0.40 | 0.59 | 3.48 | 0.36 | 0.72 | 0.83 | 16.22 | |||||||||||||
1981 | 0.79 | 0.32 | 2.77 | 1.09 | 3.44 | 0.15 | 1.63 | 0.30 | 0.86 | 3.49 | a | 0.17 | 0.49 | 15.50 | ||||||||||||
1982 | 1.36 | 0.48 | 2.25 | 1.26 | y | 1.43 | q | 1.76 | 1.87 | 1.65 | a | 6.02 | a | 1.64 | 1.05 | 0.45 | 18.53 | b | ||||||||
1983 | 0.49 | b | 0.85 | 2.52 | 1.82 | 0.69 | 0.98 | a | 0.31 | a | 5.10 | 1.83 | 0.51 | 2.14 | 1.61 | 18.85 | ||||||||||
1984 | 0.41 | a | 0.61 | 1.38 | 0.85 | 0.31 | 1.12 | 2.01 | 2.23 | 0.87 | a | 1.72 | 0.74 | a | 0.99 | 13.24 | ||||||||||
1985 | 0.76 | 0.58 | 1.55 | 0.57 | 2.90 | 0.72 | 3.90 | 0.02 | 1.18 | 1.92 | 2.86 | 0.88 | 17.84 | |||||||||||||
1986 | 0.22 | 2.12 | 1.53 | 1.04 | 0.48 | 0.09 | 0.24 | 1.46 | a | 2.03 | 1.80 | 0.14 | 0.18 | b | 11.33 | |||||||||||
1987 | 1.46 | 1.03 | 1.47 | ----- | z | ----- | z | ----- | z | ----- | z | 2.14 | 0.23 | 1.18 | 1.49 | 1.21 | 10.21 | d | ||||||||
1988 | 0.94 | 0.31 | a | 0.32 | 1.62 | 1.56 | 1.00 | 0.34 | 0.97 | 0.70 | 0.78 | 0.73 | 1.31 | 10.58 | ||||||||||||
1989 | 0.30 | a | 1.22 | 0.32 | 0.46 | 1.58 | 1.25 | 0.35 | 2.38 | 1.76 | a | 0.16 | 0.81 | 0.01 | 10.60 | |||||||||||
1990 | 1.07 | 2.32 | 2.93 | 1.27 | 0.52 | 1.55 | 0.38 | a | 0.45 | 2.87 | 1.58 | 1.06 | 0.42 | 16.42 | ||||||||||||
1991 | 0.11 | 0.15 | 1.45 | 0.23 | 2.66 | a | 1.81 | 0.49 | 2.01 | 1.88 | 0.88 | 1.41 | 1.38 | 14.46 | ||||||||||||
1992 | 0.23 | 0.57 | 2.04 | 0.25 | 0.83 | ----- | z | 1.55 | 1.16 | 0.49 | 0.64 | 0.21 | 0.52 | a | 8.49 | a | ||||||||||
1993 | 3.36 | 2.23 | 0.99 | 0.64 | 1.06 | 0.58 | 0.39 | 0.33 | 0.81 | 2.76 | 0.66 | 0.12 | 13.93 | |||||||||||||
1994 | 0.60 | 1.35 | a | 1.73 | 1.67 | 0.87 | 0.13 | 0.36 | 2.20 | 1.35 | 2.13 | 1.69 | 0.68 | 14.76 | ||||||||||||
1995 | 1.64 | 0.66 | a | 1.30 | 2.09 | 2.95 | 2.84 | 0.53 | 0.58 | 0.63 | 0.08 | 0.07 | 0.26 | i | 13.37 | a | ||||||||||
1996 | 1.50 | a | 2.28 | b | 1.85 | c | 1.18 | 2.04 | 0.00 | 1.71 | 0.13 | 0.79 | 1.46 | 1.79 | 0.59 | 15.32 | ||||||||||
1997 | ----- | z | 1.44 | c | 0.00 | 1.87 | 0.79 | 3.73 | 2.03 | 0.87 | ----- | z | ----- | z | ----- | z | ----- | z | 10.73 | e | ||||||
1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.94 | 2.15 | 1.86 | 0.39 | 1.20 | 6.54 | g | |||||
1999 | 0.72 | 0.72 | 0.75 | 1.45 | 1.27 | 1.32 | 0.33 | 1.57 | 0.90 | 0.08 | 0.06 | 0.16 | a | 9.33 | ||||||||||||
2000 | 0.79 | 1.84 | 0.55 | 0.16 | 0.85 | 0.91 | 0.05 | 1.35 | 1.16 | 2.21 | 0.38 | b | 0.18 | 10.43 | ||||||||||||
2001 | 1.86 | 2.06 | 0.80 | 2.54 | 0.09 | 0.44 | 1.99 | 1.44 | 0.42 | 0.97 | 1.44 | a | 0.98 | c | 15.03 | |||||||||||
2002 | 0.75 | d | 0.30 | a | 0.99 | a | 1.42 | 0.53 | 1.48 | 1.51 | 0.33 | 1.09 | 1.27 | 2.33 | 0.56 | a | 12.56 | |||||||||
2003 | 0.32 | 1.76 | a | 0.45 | 2.41 | 1.05 | 1.19 | 0.62 | 2.05 | 0.72 | 0.35 | 1.67 | a | 1.93 | h | 12.59 | a | |||||||||
2004 | 0.90 | a | 1.89 | 0.18 | 1.45 | 0.25 | 1.26 | 1.30 | 1.09 | 1.01 | 5.22 | 2.09 | 0.96 | 17.60 | ||||||||||||
2005 | 2.79 | 2.06 | 0.76 | a | 3.01 | 1.61 | 0.94 | a | 0.50 | 1.32 | 1.05 | 0.76 | 0.05 | 0.31 | 15.16 | |||||||||||
2006 | 2.21 | b | 1.35 | 2.99 | a | 1.29 | 0.43 | 0.53 | 1.31 | 1.10 | a | 0.85 | a | 1.78 | 0.17 | 1.14 | 15.15 | |||||||||
2007 | 0.71 | 2.28 | 0.69 | 0.67 | a | 0.17 | 0.35 | 0.33 | 0.93 | 1.53 | b | 0.09 | 0.04 | d | 2.35 | 10.14 | ||||||||||
2008 | 2.06 | a | 1.45 | 0.91 | c | 0.03 | b | 0.78 | b | 0.68 | 0.41 | a | 2.06 | a | 0.94 | a | 0.52 | a | 0.63 | a | 1.30 | e | 11.77 | |||
2009 | 1.75 | 2.90 | 0.88 | 1.96 | 1.31 | c | 1.51 | b | 1.78 | k | 1.43 | 0.85 | a | 1.34 | e | 0.03 | b | 1.32 | a | 15.28 | a | |||||
2010 | 2.36 | b | 1.61 | 0.77 | a | 2.94 | b | 0.67 | 0.48 | c | 0.81 | c | 0.46 | c | 0.23 | d | 2.61 | 2.34 | c | 4.23 | a | 19.51 | ||||
2011 | 0.44 | b | 2.10 | 1.16 | 2.00 | a | 2.97 | b | 0.31 | d | 1.02 | b | 0.44 | 0.78 | a | 1.48 | a | 0.19 | b | 0.45 | 13.34 | |||||
2012 | 0.40 | b | 1.71 | 0.98 | a | 0.44 | b | 0.24 | 0.00 | a | 2.01 | a | 1.56 | 1.96 | a | 0.60 | 1.42 | a | 2.20 | b | 13.52 | |||||
2013 | 0.65 | 0.65 | a | 1.10 | 2.79 | 0.84 | 0.00 | 0.81 | 1.17 | b | 4.12 | 0.70 | o | 1.77 | a | 2.00 | 15.90 | a | ||||||||
2014 | 1.11 | 0.44 | 1.28 | 0.60 | 0.36 | b | 0.24 | b | 3.47 | c | 5.25 | 2.04 | 0.02 | 0.33 | 1.05 | a | 16.19 | |||||||||
2015 | 1.16 | a | 0.58 | a | 1.48 | 0.51 | 3.25 | 0.91 | b | 0.70 | 0.76 | c | 0.28 | 1.99 | 1.85 | 1.07 | 14.54 | |||||||||
2016 | 1.80 | 1.50 | 1.40 | 2.24 | 1.12 | 1.22 | 0.13 | 0.26 | 0.63 | 0.82 | 1.10 | 1.92 | 14.14 | |||||||||||||
2017 | 2.79 | 0.86 | 1.67 | 1.62 | 0.51 | 0.01 | 2.19 | 1.01 | 1.36 | 0.01 | 0.30 | 0.33 | 12.66 | |||||||||||||
2018 | 1.05 | 0.97 | 2.63 | 0.33 | 3.19 | 0.00 | 1.34 | 1.45 | 0.03 | 2.84 | 0.54 | 0.01 | j | 14.37 | a | |||||||||||
2019 | ----- | z | 2.07 | 3.40 | e | 1.96 | 2.25 | b | 0.61 | 0.55 | 0.62 | 0.98 | 0.13 | 2.52 | 0.84 | 15.93 | a | |||||||||
2020 | 0.20 | a | 0.19 | a | 2.94 | e | 1.14 | e | 0.07 | 0.44 | 0.43 | 0.00 | 0.02 | 0.00 | b | 0.94 | 0.56 | 6.93 | ||||||||
2021 | 1.61 | 0.16 | 2.00 | 1.13 | 1.00 | 0.06 | 1.33 | 1.14 | 0.34 | 3.14 | 0.08 | 3.49 | 15.48 | |||||||||||||
2022 | 0.50 | 0.89 | 1.05 | 0.22 | 0.66 | 0.18 | 0.81 | b | 3.62 | b | 0.93 | 0.40 | 2.05 | 1.42 | 12.73 | |||||||||||
2023 | 4.02 | 1.59 | 3.92 | 0.61 | 1.59 | 0.75 | a | 0.38 | a | 5.98 | 1.21 | d | 0.14 | 0.67 | a | 0.01 | 20.87 | |||||||||
2024 | 0.91 | 1.36 | 3.30 | 0.06 | o | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 5.57 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 1.08 | 1.16 | 1.51 | 1.27 | 1.20 | 0.82 | 0.94 | 1.28 | 1.04 | 1.22 | 1.06 | 1.00 | 13.30 | |||||||||||||
S.D. | 0.89 | 0.82 | 0.97 | 0.90 | 1.00 | 0.84 | 0.76 | 1.11 | 1.00 | 1.01 | 0.95 | 0.91 | 3.23 | |||||||||||||
SKEW | 1.31 | 0.94 | 0.93 | 0.64 | 1.13 | 1.45 | 1.35 | 2.07 | 2.05 | 1.22 | 1.50 | 1.48 | 0.10 | |||||||||||||
MAX | 4.02 | 3.69 | 4.96 | 3.70 | 4.74 | 3.73 | 3.90 | 5.98 | 6.02 | 5.22 | 5.36 | 4.23 | 20.87 | |||||||||||||
MIN | 0.03 | 0.09 | 0.00 | 0.03 | 0.00 | 0.00 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 6.93 | |||||||||||||
YRS | 83 | 84 | 84 | 83 | 83 | 82 | 82 | 84 | 84 | 85 | 84 | 81 | 70 |