YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.25 | 0.40 | 1.04 | 0.00 | 2.69 | h | ||||
1937 | 0.00 | 1.84 | 0.85 | 0.00 | 2.33 | 1.11 | 1.32 | 0.82 | 1.49 | 0.64 | 0.00 | 0.29 | 10.69 | |||||||||||||
1938 | 0.14 | 0.09 | 0.14 | a | 0.00 | 0.02 | 2.52 | 2.01 | 0.46 | 3.18 | 0.08 | 0.00 | 0.93 | 9.57 | ||||||||||||
1939 | 0.39 | 0.40 | 0.55 | 0.12 | 0.06 | 0.10 | 2.56 | 0.62 | 2.20 | 0.45 | 0.59 | 0.37 | 8.41 | |||||||||||||
1940 | 0.04 | 0.84 | 0.00 | 0.56 | 0.98 | 0.79 | 1.23 | 0.57 | 0.56 | 0.32 | 0.38 | 0.70 | 6.97 | |||||||||||||
1941 | ----- | z | 0.50 | 0.79 | 0.97 | 0.33 | 1.40 | 1.92 | 4.06 | 4.76 | 0.88 | 0.16 | 0.92 | 16.69 | a | |||||||||||
1942 | 0.38 | 0.41 | ----- | z | 0.61 | 0.00 | 0.10 | 0.28 | 3.42 | 2.00 | 0.83 | 0.00 | 0.30 | 8.33 | a | |||||||||||
1943 | 0.28 | 0.00 | 0.07 | 0.00 | 0.09 | 1.66 | 1.30 | 1.34 | 1.59 | 0.30 | 0.33 | 1.16 | 8.12 | |||||||||||||
1944 | 0.11 | 0.29 | 0.02 | 0.12 | 0.20 | 0.02 | 1.28 | 1.46 | 3.70 | 0.99 | 1.33 | 0.40 | 9.92 | |||||||||||||
1945 | 0.62 | 0.00 | 0.09 | 0.00 | 0.00 | 0.01 | 3.05 | 1.53 | 0.08 | 0.80 | 0.00 | 0.01 | 6.19 | |||||||||||||
1946 | 0.66 | 0.02 | 0.00 | 0.38 | 0.00 | 0.16 | 0.66 | 1.70 | 1.08 | 0.71 | 0.16 | 0.04 | 5.57 | |||||||||||||
1947 | 0.14 | 0.00 | 0.11 | 0.02 | 0.06 | 0.74 | 0.43 | 2.64 | j | ----- | z | ----- | z | 0.33 | u | 0.09 | x | 1.50 | e | |||||||
1948 | 0.40 | 1.72 | 0.07 | 0.04 | 0.15 | 0.76 | 0.45 | 0.60 | 0.57 | 0.45 | 0.00 | 1.04 | 6.25 | |||||||||||||
1949 | 0.97 | 0.72 | 0.07 | 0.35 | a | 1.15 | 0.79 | 3.07 | 0.35 | 1.68 | 0.24 | 0.00 | 0.25 | 9.64 | ||||||||||||
1950 | 0.00 | 0.03 | 0.04 | 0.03 | 0.00 | 0.04 | 3.14 | 0.10 | 1.48 | 0.58 | 0.00 | 0.00 | 5.44 | |||||||||||||
1951 | 0.17 | 0.04 | 0.20 | 0.39 | 0.00 | 0.00 | 0.54 | 1.80 | 0.02 | 1.34 | 0.00 | 0.22 | 4.72 | |||||||||||||
1952 | 0.12 | 0.27 | a | 0.28 | 0.38 | 0.82 | 1.37 | 1.41 | 1.37 | 1.04 | 0.00 | 0.03 | 0.73 | 7.82 | ||||||||||||
1953 | 0.00 | 0.71 | 1.36 | 0.69 | 0.16 | 0.32 | 0.97 | 1.57 | 0.01 | 0.51 | 0.02 | 0.02 | 6.34 | |||||||||||||
1954 | 0.07 | 0.00 | 0.15 | 0.12 | 1.24 | 0.34 | 0.21 | 4.31 | 2.31 | 1.44 | 0.00 | 0.23 | 10.42 | |||||||||||||
1955 | 0.68 | 0.00 | 0.14 | e | 0.00 | 0.27 | 0.05 | 2.29 | 1.22 | 0.01 | 0.43 | 0.00 | 0.01 | 5.10 | ||||||||||||
1956 | 0.15 | 0.60 | 0.00 | 0.00 | 0.06 | 0.28 | 3.18 | 0.78 | 0.06 | 0.12 | 0.00 | 0.05 | 5.28 | |||||||||||||
1957 | 0.29 | 0.75 | 0.49 | 0.63 | 0.25 | 0.18 | a | 3.33 | 3.25 | 0.16 | a | 1.33 | 0.27 | 0.00 | 10.93 | |||||||||||
1958 | 0.19 | 0.79 | 1.49 | 0.72 | 0.66 | 0.10 | 0.76 | 1.59 | 4.02 | 2.74 | 0.04 | 0.00 | 13.10 | |||||||||||||
1959 | 0.00 | 0.04 | 0.06 | 0.51 | 0.09 | 0.11 | 0.41 | 4.50 | 0.01 | 0.59 | 0.03 | 0.46 | 6.81 | |||||||||||||
1960 | 0.70 | 0.18 | 0.02 | 0.00 | 0.00 | 1.52 | 2.70 | 0.87 | 1.24 | 0.76 | 0.03 | 1.90 | 9.92 | |||||||||||||
1961 | 0.47 | 0.00 | 0.37 | 0.00 | 0.03 | 1.01 | 0.92 | 2.86 | 2.51 | 0.03 | 2.41 | 0.33 | 10.94 | |||||||||||||
1962 | 0.93 | 0.35 | 0.16 | 0.27 | 0.00 | 0.35 | 2.89 | 0.27 | 4.24 | 1.48 | 0.57 | 2.08 | 13.59 | |||||||||||||
1963 | 0.04 | 0.20 | 0.09 | 0.04 | 0.14 | 0.21 | 0.90 | 1.58 | 1.58 | 0.84 | 0.12 | 0.00 | 5.74 | |||||||||||||
1964 | 0.04 | 0.03 | 0.36 | 0.53 | 0.03 | 0.01 | 1.64 | 1.27 | 2.43 | 0.11 | 0.00 | 0.49 | 6.94 | |||||||||||||
1965 | 0.31 | 0.00 | 0.18 | 0.00 | 0.03 | 0.85 | 0.99 | 1.09 | 1.57 | 0.03 | 0.25 | 1.74 | 7.04 | |||||||||||||
1966 | 0.60 | 0.09 | 0.04 | 0.02 | 0.09 | 2.22 | 1.63 | 1.55 | 0.48 | 0.47 | 0.00 | 0.00 | 7.19 | |||||||||||||
1967 | 0.00 | 0.14 | 0.00 | 0.00 | 0.00 | 1.42 | 1.03 | 3.76 | 2.35 | 0.21 | 0.26 | 1.07 | 10.24 | |||||||||||||
1968 | 0.38 | 0.49 | 0.66 | 0.14 | 0.00 | 0.00 | 1.86 | 1.74 | 0.89 | 0.31 | 0.82 | 0.15 | 7.44 | |||||||||||||
1969 | 0.10 | 0.00 | 0.03 | 0.20 | 0.52 | 0.59 | 1.90 | 1.04 | 1.17 | 1.20 | 0.00 | 0.75 | 7.50 | |||||||||||||
1970 | 0.00 | 0.52 | 0.29 | 0.00 | 0.00 | 0.08 | 1.95 | 1.57 | 0.98 | 1.25 | 0.00 | 0.29 | 6.93 | |||||||||||||
1971 | 0.00 | 0.00 | 0.00 | 0.15 | 0.00 | 0.37 | 0.92 | 0.99 | 1.00 | 2.35 | 0.33 | 0.84 | 6.95 | |||||||||||||
1972 | 0.12 | 0.23 | 0.00 | 0.00 | 0.31 | 1.43 | 4.61 | 5.08 | 1.23 | 2.87 | 0.65 | 0.40 | 16.93 | |||||||||||||
1973 | 0.45 | 1.25 | 0.28 | 0.00 | 0.53 | 0.02 | 1.62 | 2.82 | 0.23 | 0.00 | 0.09 | 0.00 | 7.29 | |||||||||||||
1974 | 0.20 | 0.00 | 0.04 | 0.01 | 0.70 | 0.00 | 3.86 | 3.04 | 1.71 | 3.96 | 0.02 | 0.36 | 13.90 | |||||||||||||
1975 | 0.41 | 0.57 | 0.32 | 0.00 | 0.00 | 0.08 | 4.16 | 0.19 | 4.68 | 0.28 | 0.57 | 0.73 | 11.99 | |||||||||||||
1976 | 0.05 | ----- | z | 0.06 | 0.23 | 0.26 | 0.27 | 1.14 | 0.50 | 0.71 | 0.81 | 0.32 | 0.17 | 4.52 | a | |||||||||||
1977 | 0.54 | 0.00 | 0.61 | 0.02 | 0.00 | 0.20 | 2.03 | 2.87 | 0.67 | 0.42 | 0.04 | 0.32 | 7.72 | |||||||||||||
1978 | ----- | z | 0.37 | 0.00 | 0.00 | 0.56 | 0.91 | 0.73 | 1.28 | 1.70 | 0.86 | 3.09 | 0.81 | 10.31 | a | |||||||||||
1979 | 1.02 | 0.16 | 0.01 | ----- | z | 1.60 | 1.10 | 1.83 | 2.19 | 2.54 | 0.00 | 0.00 | 0.48 | 10.93 | a | |||||||||||
1980 | 0.10 | a | ----- | z | 0.00 | 0.09 | 0.00 | 0.00 | 0.72 | 1.36 | 1.75 | 0.08 | 0.00 | 0.46 | 4.56 | a | ||||||||||
1981 | 1.03 | 0.30 | 0.00 | 0.23 | ----- | z | 2.73 | 1.73 | ----- | z | 0.38 | 0.63 | 0.90 | 0.02 | 7.95 | b | ||||||||||
1982 | 0.14 | 0.60 | 0.00 | 0.15 | 0.94 | 0.38 | 0.06 | 2.18 | 1.59 | a | 0.06 | 0.91 | ----- | z | 7.01 | a | ||||||||||
1983 | 0.90 | 0.65 | 0.00 | a | 0.47 | 0.57 | ----- | z | 1.82 | 1.17 | 1.98 | 1.21 | 0.61 | 0.12 | 9.50 | a | ||||||||||
1984 | 2.25 | 0.00 | 0.35 | 0.00 | 0.42 | 2.32 | 0.58 | 5.67 | 0.35 | 2.93 | a | 0.85 | 2.10 | 17.82 | ||||||||||||
1985 | 0.84 | 0.02 | 0.75 | a | 0.32 | d | 0.00 | b | 0.10 | a | 1.58 | c | 3.05 | 1.52 | a | ----- | z | ----- | z | 0.37 | 8.55 | b | ||||
1986 | 0.00 | 0.00 | 0.23 | b | 0.00 | 0.51 | 2.16 | 3.44 | 2.51 | 1.12 | 2.07 | 2.42 | 2.39 | 16.85 | ||||||||||||
1987 | 0.04 | a | 0.11 | 0.69 | 0.06 | 0.00 | ----- | z | 0.91 | a | 2.61 | 1.65 | 0.65 | 0.57 | 1.81 | b | 9.10 | a | ||||||||
1988 | 0.46 | 1.55 | 0.18 | 0.29 | 0.00 | 0.17 | 3.83 | 3.21 | 0.85 | 0.51 | 0.00 | 0.00 | 11.05 | |||||||||||||
1989 | 0.55 | d | 0.26 | 0.09 | 0.00 | 0.25 | a | 0.00 | 1.32 | 2.66 | 0.44 | 0.84 | a | 0.02 | 0.83 | 7.26 | ||||||||||
1990 | 0.25 | 0.26 | 0.93 | 0.00 | c | 0.52 | 0.09 | 5.17 | 3.80 | 6.39 | 0.97 | 1.22 | 0.61 | 20.21 | ||||||||||||
1991 | 0.47 | a | 0.75 | 0.23 | 0.00 | 0.10 | 0.23 | a | 2.71 | 3.02 | 2.78 | 0.38 | 0.76 | b | 3.84 | 15.27 | ||||||||||
1992 | 0.73 | 0.48 | 0.27 | b | 0.79 | 3.92 | 0.37 | 1.51 | 1.12 | 1.62 | 0.79 | 0.00 | 3.33 | d | 14.93 | |||||||||||
1993 | 1.58 | 0.40 | 0.03 | 0.00 | 0.31 | 0.14 | 1.11 | 3.46 | 0.84 | 0.47 | 0.26 | 0.38 | 8.98 | |||||||||||||
1994 | 0.26 | 0.12 | 0.13 | 0.49 | 0.27 | 0.16 | 0.52 | 1.43 | 1.42 | 1.17 | 2.81 | 2.15 | 10.93 | |||||||||||||
1995 | 0.60 | 0.16 | 0.12 | 0.00 | 0.00 | 0.71 | 1.84 | 1.53 | 2.71 | 0.00 | 0.08 | 0.11 | 7.86 | |||||||||||||
1996 | 0.17 | 0.29 | 0.00 | 0.59 | 0.00 | 2.80 | 1.21 | 1.41 | ----- | z | 1.22 | 0.38 | 0.00 | 8.07 | a | |||||||||||
1997 | 0.30 | 0.48 | 0.50 | 0.12 | 0.95 | a | 0.92 | 1.71 | 1.54 | 2.46 | 1.55 | 0.32 | 0.61 | 11.46 | ||||||||||||
1998 | 0.06 | 0.03 | 0.32 | 0.28 | 0.00 | 0.01 | 1.91 | 1.46 | 0.27 | 4.72 | 0.40 | 0.01 | 9.47 | |||||||||||||
1999 | 0.30 | 0.00 | 0.37 | 0.00 | 0.25 | 2.67 | 4.68 | 4.92 | 1.35 | 0.23 | 0.00 | 0.67 | 15.44 | |||||||||||||
2000 | 0.00 | 0.00 | 2.01 | 0.00 | a | 0.00 | 4.38 | 0.86 | 2.52 | 0.00 | 2.86 | 1.69 | 0.04 | 14.36 | ||||||||||||
2001 | 0.92 | 0.77 | 0.11 | 0.03 | 0.86 | 0.95 | 0.99 | 1.19 | 1.50 | 0.15 | 0.10 | 0.05 | 7.62 | |||||||||||||
2002 | 0.15 | 0.56 | 0.00 | 0.00 | 0.05 | 0.00 | 1.83 | 0.35 | 1.78 | 0.66 | 0.36 | 0.98 | 6.72 | |||||||||||||
2003 | 0.02 | 1.56 | 0.00 | 0.00 | 0.00 | 0.61 | 0.61 | 1.66 | 0.21 | 0.47 | 0.76 | 0.02 | 5.92 | |||||||||||||
2004 | 0.28 | 0.00 | 0.91 | 1.86 | 0.18 | 0.12 | 0.52 | 1.02 | 0.83 | 1.78 | 2.08 | 0.33 | 9.91 | |||||||||||||
2005 | 1.23 | 4.59 | 0.48 | 0.33 | 1.30 | 0.02 | 0.30 | 2.12 | 0.31 | 1.52 | 0.00 | 0.00 | 12.20 | |||||||||||||
2006 | 0.16 | 0.50 | 0.00 | 0.35 | 0.04 | 0.53 | 2.61 | 5.87 | 1.65 | 2.40 | 0.00 | 0.34 | 14.45 | |||||||||||||
2007 | 1.45 | 0.23 | 0.13 | 1.32 | 1.17 | 0.50 | 1.28 | 2.60 | 1.26 | 0.04 | 0.10 | 0.77 | 10.85 | |||||||||||||
2008 | 0.04 | 0.18 | 0.00 | 0.00 | 0.70 | 0.08 | 5.99 | 1.15 | 4.85 | 0.47 | 0.22 | 0.05 | 13.73 | |||||||||||||
2009 | 0.00 | 0.00 | 0.14 | 0.05 | 0.24 | 1.06 | 0.58 | 2.96 | 1.66 | 0.21 | 0.66 | 0.89 | 8.45 | |||||||||||||
2010 | 0.75 | 1.08 | 0.22 | 1.43 | 0.02 | 0.33 | 3.99 | 2.30 | 0.72 | 0.38 | 0.00 | 0.05 | 11.27 | |||||||||||||
2011 | ----- | z | ----- | z | ----- | z | 0.00 | ----- | z | ----- | z | 1.72 | s | 1.44 | w | ----- | z | ----- | z | ----- | z | ----- | z | 0.00 | k | |
2012 | ----- | z | ----- | z | ----- | z | ----- | z | 0.04 | 0.00 | 1.40 | ----- | z | 1.32 | y | ----- | z | ----- | z | ----- | z | 1.44 | i | |||
2013 | 0.13 | 0.01 | 0.03 | 0.00 | 0.15 | 0.00 | ----- | z | 2.31 | 8.24 | 0.02 | 0.84 | 0.70 | 12.43 | a | |||||||||||
2014 | 0.00 | 0.00 | 0.05 | 0.94 | 0.11 | 0.02 | 2.40 | 2.93 | 6.55 | 0.50 | a | 0.16 | 0.14 | 13.80 | ||||||||||||
2015 | 1.74 | 0.10 | 0.53 | 0.05 | 0.25 | 1.08 | 1.92 | 1.16 | 1.43 | 1.30 | 0.64 | 0.17 | 10.37 | |||||||||||||
2016 | 0.41 | 0.00 | 0.00 | 0.81 | 0.49 | 0.08 | 0.72 | 3.33 | 1.52 | 0.06 | 1.19 | 1.33 | 9.94 | |||||||||||||
2017 | 2.08 | 0.52 | 0.00 | 0.00 | 0.20 | 0.27 | 3.49 | 0.58 | 0.93 | 2.21 | 0.08 | 0.15 | 10.51 | |||||||||||||
2018 | 0.00 | 0.91 | 0.10 | 0.00 | 0.00 | 1.04 | 2.08 | 0.50 | 0.89 | 2.72 | 0.00 | 0.95 | 9.19 | |||||||||||||
2019 | 0.14 | 0.02 | 0.23 | 0.08 | 0.26 | 0.20 | 0.64 | 0.94 | 1.18 | 1.00 | 3.50 | 0.33 | 8.52 | |||||||||||||
2020 | 0.08 | 1.14 | 0.77 | 0.00 | 0.11 | f | 0.98 | 3.05 | 0.28 | 1.75 | 0.16 | 0.00 | 0.39 | 8.60 | a | |||||||||||
2021 | 0.00 | 0.23 | 0.04 | 0.35 | 0.00 | 1.52 | 1.09 | 2.36 | 2.01 | 0.06 | 0.00 | 0.10 | 7.76 | |||||||||||||
2022 | 0.00 | 0.00 | 0.19 | 0.00 | 0.00 | p | 2.09 | 3.13 | 3.39 | 0.97 | 2.38 | 0.04 | 0.51 | 12.70 | a | |||||||||||
2023 | 0.36 | 0.30 | 0.24 | 0.00 | 2.34 | 0.00 | 0.47 | 1.10 | 2.42 | 0.39 | 0.40 | 0.90 | 8.92 | |||||||||||||
2024 | 0.38 | 1.09 | 0.16 | 0.00 | o | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.63 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.40 | 0.42 | 0.26 | 0.23 | 0.38 | 0.68 | 1.80 | 1.98 | 1.68 | 0.91 | 0.47 | 0.60 | 9.82 | |||||||||||||
S.D. | 0.47 | 0.63 | 0.36 | 0.36 | 0.62 | 0.85 | 1.25 | 1.31 | 1.52 | 0.95 | 0.74 | 0.74 | 3.42 | |||||||||||||
SKEW | 1.88 | 3.88 | 2.43 | 2.20 | 3.17 | 1.80 | 1.06 | 0.91 | 1.96 | 1.70 | 2.33 | 2.16 | 0.84 | |||||||||||||
MAX | 2.25 | 4.59 | 2.01 | 1.86 | 3.92 | 4.38 | 5.99 | 5.87 | 8.24 | 4.72 | 3.50 | 3.84 | 20.21 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.06 | 0.10 | 0.00 | 0.00 | 0.00 | 0.00 | 4.72 | |||||||||||||
YRS | 84 | 84 | 85 | 85 | 83 | 84 | 85 | 83 | 84 | 84 | 84 | 84 | 69 |