YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1938 | 0.29 | t | 2.19 | 1.15 | 1.66 | 0.29 | 1.39 | 0.29 | 0.00 | 0.66 | 0.92 | 0.55 | v | 0.60 | 9.15 | b | ||||||||||
1939 | 0.14 | 0.24 | 0.50 | 0.00 | 0.26 | 0.62 | 0.22 | 0.04 | 0.24 | 0.34 | 0.07 | 1.29 | 3.96 | |||||||||||||
1940 | 2.14 | 1.48 | 1.38 | 2.09 | 0.10 | 0.15 | 0.53 | 0.00 | 2.29 | 0.78 | 0.94 | 0.53 | 12.41 | |||||||||||||
1941 | 1.02 | 0.83 | 0.11 | 0.95 | 1.61 | 0.94 | 0.20 | 0.49 | 0.71 | 1.34 | 2.01 | 1.43 | 11.64 | |||||||||||||
1942 | 1.24 | 0.80 | 0.30 | 0.26 | 2.05 | 1.18 | 0.13 | 0.00 | 0.41 | 0.33 | 3.75 | 2.44 | a | 12.89 | ||||||||||||
1943 | 2.23 | 0.40 | 0.77 | 1.40 | 0.18 | 0.71 | 0.00 | 0.67 | 0.00 | 1.75 | 0.44 | 0.43 | 8.98 | |||||||||||||
1944 | 0.36 | 0.70 | 0.05 | 0.72 | 0.19 | 1.02 | 0.00 | 0.10 | 0.91 | 0.45 | 1.12 | 0.69 | 6.31 | |||||||||||||
1945 | 0.81 | 1.33 | 0.74 | 0.02 | 3.34 | 0.04 | 0.05 | 0.35 | 0.66 | 0.77 | 1.57 | 1.98 | 11.66 | |||||||||||||
1946 | 0.70 | 0.29 | 1.18 | a | 0.02 | 0.66 | 0.95 | 0.17 | 0.96 | 0.44 | 1.51 | 1.30 | 0.18 | 8.36 | ||||||||||||
1947 | 0.30 | 0.48 | 0.69 | 0.80 | 0.32 | 1.39 | 1.60 | 0.86 | a | 1.03 | 2.36 | 1.50 | 0.40 | 11.73 | ||||||||||||
1948 | 1.37 | 0.47 | 1.50 | 1.75 | 2.33 | 1.97 | 0.70 | 0.66 | 1.09 | 0.25 | 1.32 | 1.87 | 15.28 | |||||||||||||
1949 | 0.32 | a | 0.25 | 1.09 | a | 0.38 | 0.75 | 0.00 | 0.00 | 0.00 | 0.12 | 0.55 | 1.58 | 0.32 | 5.36 | |||||||||||
1950 | 2.08 | 0.44 | b | 0.27 | 0.73 | 0.28 | 2.37 | 0.00 | 0.11 | 0.00 | 4.57 | 1.15 | 1.37 | a | 13.37 | |||||||||||
1951 | 1.38 | 0.85 | a | 0.40 | 0.19 | 1.27 | 0.25 | 0.44 | 0.04 | 0.10 | 0.62 | 1.52 | 1.38 | 8.44 | ||||||||||||
1952 | 0.44 | 1.38 | 0.11 | 0.35 | 0.52 | 2.38 | 0.00 | 0.21 | 0.37 | 0.00 | 0.17 | 2.19 | 8.12 | |||||||||||||
1953 | 1.65 | 1.88 | 0.75 | 0.56 | 1.47 | a | 1.14 | 0.00 | 1.26 | 0.16 | 0.62 | 1.60 | 1.47 | 12.56 | ||||||||||||
1954 | 1.67 | 0.36 | 0.50 | a | 0.28 | 1.06 | 1.53 | 0.04 | 1.45 | 0.76 | 0.58 | 0.53 | 0.09 | 8.85 | ||||||||||||
1955 | 0.57 | 0.21 | a | 0.37 | 1.31 | 0.64 | 0.49 | 0.38 | 0.00 | 0.78 | 0.70 | 1.64 | 3.14 | 10.23 | ||||||||||||
1956 | 3.11 | 1.82 | 0.43 | 0.06 | 2.25 | 1.24 | 0.09 | 0.09 | 0.16 | 1.26 | 0.24 | 0.28 | 11.03 | |||||||||||||
1957 | 0.53 | 0.56 | 2.90 | 0.88 | 2.44 | 0.40 | 0.51 | 0.30 | 0.92 | 0.77 | 0.36 | 2.24 | 12.81 | |||||||||||||
1958 | 1.21 | 1.81 | 0.67 | 0.58 | 0.81 | 2.54 | 0.35 | 0.07 | 0.36 | 0.04 | 1.21 | 0.98 | a | 10.63 | ||||||||||||
1959 | 2.09 | 1.11 | 0.79 | 0.13 | 0.87 | 0.57 | 0.11 | 0.00 | 0.33 | a | 0.44 | a | 0.18 | 0.27 | c | 6.89 | ||||||||||
1960 | 1.46 | d | 0.35 | 1.55 | c | 0.67 | 0.93 | 0.24 | 0.59 | 0.09 | 0.13 | 0.53 | 3.71 | 0.84 | 11.09 | |||||||||||
1961 | 0.61 | 2.92 | 2.07 | 0.53 | 1.39 | 0.68 | 0.03 | 0.13 | 0.00 | 0.46 | 2.50 | 1.43 | 12.75 | |||||||||||||
1962 | 0.48 | 0.78 | 1.10 | 0.59 | 3.29 | 0.22 | 0.00 | 1.10 | 0.35 | 1.89 | 1.18 | 1.73 | 12.71 | |||||||||||||
1963 | 0.60 | 1.17 | 0.76 | 1.59 | 0.86 | 0.44 | 0.39 | 0.12 | 1.53 | 0.38 | 2.56 | 1.52 | 11.92 | |||||||||||||
1964 | 1.21 | 0.18 | 0.20 | 0.27 | 0.09 | 1.39 | 0.07 | 0.08 | 0.18 | 0.80 | 1.26 | 4.85 | 10.58 | |||||||||||||
1965 | 1.66 | 0.15 | 0.06 | 1.23 | 0.28 | 1.83 | 0.65 | 0.44 | 0.11 | 0.38 | 2.19 | 0.31 | 9.29 | |||||||||||||
1966 | 1.36 | 0.59 | 0.68 | 0.00 | 0.11 | 0.86 | 1.44 | 0.00 | 0.81 | 0.34 | 2.84 | 2.00 | 11.03 | |||||||||||||
1967 | 1.57 | 0.05 | 0.29 | 1.81 | 0.33 | 0.75 | 0.00 | 0.00 | 0.30 | 0.41 | 0.42 | 0.43 | 6.36 | |||||||||||||
1968 | 1.24 | 0.97 | 0.11 | 0.24 | 0.92 | 0.43 | 0.13 | 1.04 | 0.36 | 0.73 | 1.72 | 2.31 | 10.20 | |||||||||||||
1969 | 2.77 | 0.48 | 0.54 | 0.73 | 1.25 | 3.33 | 0.02 | 0.00 | 0.58 | 1.01 | 0.38 | 1.71 | 12.80 | |||||||||||||
1970 | 3.33 | 0.29 | 1.05 | 0.34 | 0.18 | 0.56 | 0.00 | 0.04 | 0.28 | 0.70 | 1.85 | 0.78 | 9.40 | |||||||||||||
1971 | 1.41 | 0.56 | 0.84 | 0.21 | 1.22 | 0.82 | 0.28 | 0.16 | 1.21 | 0.70 | 1.18 | 0.62 | 9.21 | |||||||||||||
1972 | 1.58 | 0.33 | 1.99 | 0.62 | 0.91 | 1.27 | 0.14 | 1.00 | 0.40 | 0.44 | 0.34 | 1.50 | 10.52 | |||||||||||||
1973 | 0.61 | 0.45 | 0.34 | 0.31 | 0.67 | 0.00 | 0.00 | 0.16 | 1.39 | 1.05 | 4.01 | 1.74 | 10.73 | |||||||||||||
1974 | 0.78 | 0.52 | 1.72 | 1.12 | 0.08 | 0.04 | 0.45 | 0.00 | 0.00 | 0.50 | 0.47 | 1.13 | 6.81 | |||||||||||||
1975 | 1.37 | 1.42 | 1.76 | 0.44 | 0.13 | 0.86 | 0.47 | 1.48 | 0.00 | 1.10 | 0.69 | 1.34 | 11.06 | |||||||||||||
1976 | 0.91 | 0.96 | 0.27 | 1.64 | 0.57 | 0.12 | 0.48 | 2.18 | 0.18 | 0.24 | 0.53 | 0.15 | 8.23 | |||||||||||||
1977 | 0.24 | 0.35 | 0.13 | 0.02 | 2.13 | 0.16 | 0.10 | 0.56 | 0.79 | 0.30 | 2.45 | 1.93 | 9.16 | |||||||||||||
1978 | 1.96 | 0.36 | 0.66 | 2.89 | 0.80 | 1.17 | 0.55 | 1.60 | 0.35 | 0.00 | 0.75 | 0.46 | 11.55 | |||||||||||||
1979 | 1.68 | 0.51 | 1.22 | 1.73 | 0.57 | 0.19 | 0.05 | 0.91 | 0.37 | 1.89 | 2.06 | 0.28 | 11.46 | |||||||||||||
1980 | 1.69 | 1.10 | 0.41 | a | 0.84 | 2.24 | 2.47 | 0.11 | 0.06 | 0.71 | 0.66 | 1.02 | 1.74 | 13.05 | ||||||||||||
1981 | 1.40 | 1.05 | 0.83 | 0.31 | 1.64 | 0.91 | 0.25 | 0.00 | 1.46 | 0.57 | 2.39 | 4.56 | 15.37 | |||||||||||||
1982 | 0.79 | 0.61 | a | 0.57 | 0.61 | 0.46 | 1.79 | a | 0.65 | 0.47 | 1.63 | 2.08 | a | 0.47 | 1.23 | 11.36 | ||||||||||
1983 | 1.18 | 1.81 | 1.58 | 1.31 | 2.31 | 1.04 | 1.04 | 0.64 | 0.27 | 0.78 | 1.55 | 2.87 | 16.38 | |||||||||||||
1984 | 0.24 | 1.28 | 2.20 | 1.32 | 0.60 | 1.59 | 0.15 | 0.05 | 0.21 | 1.44 | a | 3.98 | 0.55 | 13.61 | ||||||||||||
1985 | 0.21 | 0.38 | 0.31 | a | 0.53 | 0.91 | 0.52 | 0.06 | 0.14 | 1.16 | 0.38 | 1.24 | 1.43 | 7.27 | ||||||||||||
1986 | 1.57 | 2.62 | 0.61 | 0.30 | 0.69 | 0.13 | 0.80 | 0.05 | 1.22 | 0.64 | 1.77 | 0.58 | 10.98 | |||||||||||||
1987 | 1.53 | 0.97 | 1.25 | 0.29 | 0.97 | 0.48 | 1.41 | a | 0.03 | 0.05 | 0.00 | 0.88 | 2.42 | a | 10.28 | |||||||||||
1988 | 1.14 | a | 0.17 | 0.49 | 1.53 | 0.39 | 1.30 | 0.00 | 0.00 | 0.50 | 0.05 | 2.27 | 0.43 | 8.27 | ||||||||||||
1989 | 1.61 | 0.47 | 2.10 | 2.04 | 1.06 | 0.16 | a | 0.17 | 0.68 | 0.12 | 0.37 | 0.41 | 0.27 | 9.46 | ||||||||||||
1990 | 2.05 | 0.19 | 0.77 | 0.44 | 2.08 | 0.32 | 0.44 | 1.64 | 0.00 | 0.81 | 0.58 | 0.52 | 9.84 | |||||||||||||
1991 | 0.33 | 0.16 | 0.86 | 0.22 | 1.80 | 0.58 | 0.34 | 0.33 | 0.00 | 0.71 | 1.68 | 0.63 | 7.64 | |||||||||||||
1992 | 0.32 | 0.80 | 0.41 | 1.94 | 0.49 | 0.67 | 0.46 | 0.00 | 0.16 | 2.09 | 1.33 | 1.60 | 10.27 | |||||||||||||
1993 | 1.21 | 1.24 | 1.24 | 1.39 | 3.20 | 1.31 | 0.52 | ----- | z | 0.00 | 0.14 | 0.42 | 0.34 | 11.01 | a | |||||||||||
1994 | 0.33 | 0.39 | 0.70 | 1.37 | 1.77 | 0.92 | 0.00 | 0.00 | 0.25 | 0.71 | 1.47 | 0.18 | 8.09 | |||||||||||||
1995 | 1.90 | 1.04 | 0.70 | 2.27 | 2.05 | 1.58 | 1.22 | 0.07 | 0.60 | 0.44 | 1.52 | 1.69 | 15.08 | |||||||||||||
1996 | 1.81 | 2.10 | 0.95 | 1.51 | 1.36 | 0.47 | 0.27 | 0.00 | ----- | z | 0.96 | 4.10 | 3.46 | 16.99 | a | |||||||||||
1997 | 1.52 | 0.35 | 0.56 | a | 1.33 | 0.55 | 1.61 | 0.83 | 0.66 | 0.49 | 0.89 | 0.34 | 0.12 | 9.25 | ||||||||||||
1998 | 2.95 | 0.38 | 0.83 | 1.53 | 4.77 | 1.07 | 1.36 | 0.20 | 0.49 | 0.42 | 2.17 | 0.90 | 17.07 | |||||||||||||
1999 | 0.98 | 1.10 | 0.73 | 0.24 | 0.26 | 0.11 | 0.05 | 1.05 | 0.00 | 1.52 | 0.96 | 0.25 | 7.25 | |||||||||||||
2000 | 2.41 | 1.59 | 0.66 | 0.35 | 0.26 | 0.18 | 0.42 | 0.20 | 0.67 | 1.29 | 0.64 | a | 0.48 | 9.15 | ||||||||||||
2001 | 0.45 | 0.51 | 0.30 | 1.72 | 1.43 | 0.73 | 0.39 | 0.15 | 0.40 | 0.61 | 1.97 | 1.34 | 10.00 | |||||||||||||
2002 | 0.77 | 0.19 | 0.39 | 0.34 | 0.58 | 0.39 | 0.14 | 0.18 | 0.11 | 0.31 | 0.39 | 1.82 | a | 5.61 | ||||||||||||
2003 | 1.41 | 0.82 | 0.92 | 1.67 | 0.48 | 0.00 | 0.28 | 0.54 | 0.64 | 0.59 | 0.92 | 2.21 | 10.48 | |||||||||||||
2004 | 1.53 | 1.14 | 0.55 | 1.16 | 1.14 | 0.97 | 0.11 | 1.17 | 0.36 | 1.50 | a | 0.59 | 1.22 | 11.44 | ||||||||||||
2005 | 0.23 | 0.46 | 0.70 | 1.66 | 3.30 | 0.62 | 0.20 | 0.08 | 0.05 | 1.53 | 1.15 | 2.87 | 12.85 | |||||||||||||
2006 | 2.27 | 0.71 | 1.32 | 1.04 | 1.07 | 1.21 | 0.10 | 0.54 | 0.17 | 0.36 | 1.70 | 1.83 | 12.32 | |||||||||||||
2007 | 0.76 | 0.68 | 0.43 | 1.18 | 0.17 | 1.15 | 0.15 | 0.56 | 0.97 | 1.85 | 1.46 | 0.46 | 9.82 | |||||||||||||
2008 | 1.13 | 0.19 | 0.48 | 0.49 | a | 1.51 | a | 0.34 | 0.06 | 0.41 | 0.00 | 0.29 | 0.52 | a | 1.26 | 6.68 | ||||||||||
2009 | 0.49 | 0.66 | 0.82 | 1.38 | 0.53 | a | 1.09 | 0.04 | 0.08 | 0.09 | 1.99 | 0.81 | 0.86 | 8.84 | ||||||||||||
2010 | 2.19 | 0.57 | 0.62 | 1.89 | 1.33 | a | 1.39 | 0.05 | 0.06 | 1.86 | 1.07 | 1.04 | 2.62 | 14.69 | ||||||||||||
2011 | 0.83 | x | 1.11 | r | 1.03 | m | 0.41 | r | 1.29 | p | 0.53 | w | 0.61 | y | ----- | z | 0.00 | 0.58 | w | 0.19 | v | ----- | z | 0.00 | k | |
2012 | 1.41 | u | 0.43 | u | 1.31 | o | 1.59 | m | 0.65 | y | 2.05 | t | ----- | z | ----- | z | ----- | z | 1.19 | ----- | z | 2.20 | o | 1.19 | k | |
2013 | 0.36 | 0.00 | ----- | z | 0.43 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | v | 0.45 | y | 0.79 | i | |||
2014 | 0.91 | 2.89 | 1.57 | a | 0.70 | v | 0.43 | ----- | z | ----- | z | ----- | z | ----- | z | 1.00 | v | 1.80 | q | 1.75 | i | 5.80 | h | |||
2015 | 0.36 | x | 1.06 | w | 0.50 | v | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.59 | w | 1.96 | s | 1.60 | q | 0.00 | l |
2016 | 1.18 | x | 0.49 | y | 0.93 | q | 0.31 | x | 2.44 | y | ----- | z | ----- | z | ----- | z | ----- | z | 2.17 | i | ----- | z | 1.98 | n | 0.00 | l |
2017 | 1.85 | i | 1.23 | o | 0.80 | u | 1.64 | n | 1.09 | x | ----- | z | ----- | z | ----- | z | 0.39 | y | ----- | z | 0.99 | w | 0.37 | y | 0.00 | l |
2018 | 0.75 | u | 0.44 | v | 1.55 | v | 1.58 | u | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 0.78 | w | ----- | z | 0.95 | w | 0.00 | l |
2019 | 1.06 | w | 3.18 | l | ----- | z | 1.69 | s | 1.31 | u | ----- | z | ----- | z | ----- | z | 1.23 | u | ----- | z | ----- | z | 1.15 | u | 0.00 | l |
2020 | 0.89 | u | 0.18 | y | 0.84 | y | 0.36 | w | 1.89 | w | 0.49 | w | 0.00 | 0.00 | ----- | z | ----- | z | 1.98 | w | 0.56 | w | 0.00 | j | ||
2021 | 0.94 | y | 1.01 | r | ----- | z | 0.10 | 0.56 | 0.27 | 0.10 | 0.00 | 1.38 | 0.75 | 1.54 | 1.32 | 6.02 | c | |||||||||
2022 | 1.42 | 0.18 | 1.05 | 0.85 | 0.65 | 1.77 | 0.16 | 0.00 | 0.13 | 0.22 | 1.24 | g | 1.53 | v | 6.43 | b | ||||||||||
2023 | 0.31 | ----- | z | 0.97 | 0.76 | 1.24 | 0.03 | 0.00 | 0.36 | 0.80 | 0.64 | 1.27 | 1.14 | 7.52 | a | |||||||||||
2024 | 2.53 | 1.92 | 0.39 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 4.84 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 1.25 | 0.83 | 0.82 | 0.89 | 1.10 | 0.89 | 0.31 | 0.38 | 0.51 | 0.84 | 1.38 | 1.30 | 10.44 | |||||||||||||
S.D. | 0.76 | 0.66 | 0.56 | 0.66 | 0.93 | 0.70 | 0.37 | 0.49 | 0.50 | 0.70 | 0.95 | 0.99 | 2.66 | |||||||||||||
SKEW | 0.56 | 1.32 | 1.23 | 0.60 | 1.48 | 1.00 | 1.76 | 1.52 | 1.28 | 2.32 | 1.14 | 1.25 | 0.10 | |||||||||||||
MAX | 3.33 | 2.92 | 2.90 | 2.89 | 4.77 | 3.33 | 1.60 | 2.18 | 2.29 | 4.57 | 4.10 | 4.85 | 17.07 | |||||||||||||
MIN | 0.14 | 0.00 | 0.05 | 0.00 | 0.08 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.07 | 0.09 | 3.96 | |||||||||||||
YRS | 77 | 77 | 77 | 77 | 77 | 76 | 77 | 76 | 76 | 77 | 74 | 75 | 70 |