YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 2.02 | 3.92 | 2.32 | 0.14 | 0.23 | a | 8.63 | g | ||||
1942 | 0.18 | 0.54 | 0.03 | 3.63 | 0.83 | 3.75 | 1.70 | 7.49 | 5.24 | 2.84 | 0.09 | 0.83 | 27.15 | |||||||||||||
1943 | 0.49 | 0.20 | 0.36 | 0.48 | 3.37 | 1.12 | 1.37 | 3.15 | 0.02 | 0.06 | 0.37 | 0.85 | 11.84 | |||||||||||||
1944 | 0.71 | 0.00 | 1.56 | 3.35 | 2.80 | 0.94 | 3.29 | 0.03 | 0.67 | 0.85 | 1.85 | a | 0.05 | 16.10 | ||||||||||||
1945 | 1.07 | 0.06 | 0.00 | 1.11 | 1.96 | 1.77 | 0.88 | 2.68 | a | ----- | z | 0.32 | 0.19 | 0.00 | 10.04 | a | ||||||||||
1946 | 0.05 | 0.03 | 0.57 | 0.66 | 1.44 | 0.98 | 1.22 | 2.82 | 0.42 | 0.78 | 7.41 | 0.00 | 16.38 | |||||||||||||
1947 | 0.10 | 0.29 | 0.10 | 0.44 | 3.82 | 2.10 | 4.12 | 3.62 | 0.30 | 0.25 | 0.40 | 0.50 | 16.04 | |||||||||||||
1948 | 0.59 | 0.36 | 1.08 | 0.66 | 1.58 | b | 4.64 | 2.98 | 3.34 | 0.18 | 0.00 | 0.03 | 0.10 | 15.54 | ||||||||||||
1949 | 0.07 | 0.03 | 0.72 | d | 0.35 | h | 2.71 | 4.31 | 2.15 | p | ----- | z | ----- | z | 1.20 | u | 0.00 | 0.00 | 7.84 | e | ||||||
1950 | 0.00 | 0.06 | 0.12 | 1.14 | 0.38 | 0.00 | 3.63 | 0.77 | 4.41 | 0.10 | 0.00 | 0.00 | 10.61 | |||||||||||||
1951 | 0.33 | 0.11 | 0.20 | 1.28 | 2.94 | 5.32 | 4.26 | 1.14 | 1.05 | 1.11 | 0.70 | ----- | z | 18.44 | a | |||||||||||
1952 | ----- | z | 0.21 | 0.23 | 2.37 | 1.17 | d | 0.44 | 1.13 | 3.41 | 0.00 | 0.10 | 1.05 | 0.07 | 10.18 | a | ||||||||||
1953 | 0.09 | 0.31 | 0.61 | 1.80 | 3.55 | a | 0.65 | 1.65 | ----- | z | ----- | z | ----- | z | 0.23 | f | 0.22 | 8.88 | d | |||||||
1954 | 0.20 | 0.00 | 0.26 | 0.07 | 2.36 | 0.22 | 0.77 | f | 3.13 | a | 0.38 | 2.54 | 0.07 | 0.14 | 9.37 | a | ||||||||||
1955 | 0.04 | 0.06 | 0.00 | 0.00 | 2.75 | 0.94 | 1.65 | 5.15 | 1.10 | 0.00 | 0.14 | 0.00 | 11.83 | |||||||||||||
1956 | 0.28 | 0.06 | 0.33 | 0.18 | 1.68 | 0.65 | 1.58 | h | 0.95 | 0.00 | 0.25 | 0.42 | 0.06 | 4.86 | a | |||||||||||
1957 | 0.03 | 0.00 | 0.22 | 3.38 | 4.15 | 3.26 | 4.17 | 2.39 | 0.40 | 0.62 | 0.63 | 0.00 | h | 19.25 | a | |||||||||||
1958 | 0.15 | 0.11 | 0.41 | 1.09 | 4.24 | 1.01 | 2.84 | 0.78 | 0.00 | 0.64 | 0.12 | 0.00 | 11.39 | |||||||||||||
1959 | 0.42 | 0.68 | 0.50 | 1.29 | 1.47 | 1.37 | 0.48 | 1.54 | 1.75 | 1.70 | 0.12 | 0.00 | 11.32 | |||||||||||||
1960 | 1.08 | 1.27 | 0.32 | 0.84 | 2.21 | 0.90 | 2.93 | 0.12 | 1.69 | 2.38 | 0.21 | 1.46 | 15.41 | |||||||||||||
1961 | 0.03 | 0.55 | 1.08 | 0.46 | 1.92 | 2.50 | 2.75 | 0.81 | 1.35 | 0.00 | 0.46 | 0.20 | 12.11 | |||||||||||||
1962 | 0.44 | 0.00 | 0.43 | 0.29 | 1.82 | 1.07 | 4.44 | 1.45 | 0.33 | 0.62 | 1.03 | 0.06 | 11.98 | |||||||||||||
1963 | 0.07 | 0.00 | 1.40 | 0.00 | 0.15 | 2.08 | 1.00 | 5.72 | 1.23 | 0.30 | 0.17 | 0.16 | 12.28 | |||||||||||||
1964 | 0.00 | 0.17 | 0.71 | 0.55 | 1.50 | 1.14 | 0.58 | 0.52 | 0.22 | 0.00 | 0.18 | 0.00 | 5.57 | |||||||||||||
1965 | 0.10 | 0.35 | 0.53 | 0.13 | 1.07 | 3.37 | 2.91 | 7.68 | 1.29 | 0.80 | 0.00 | 0.32 | 18.55 | |||||||||||||
1966 | 0.25 | 0.22 | 0.00 | 0.13 | 0.08 | 0.62 | 3.43 | 1.74 | 1.82 | 0.00 | 0.00 | 0.09 | 8.38 | |||||||||||||
1967 | 0.26 | 0.00 | 0.21 | 0.31 | 2.38 | 2.66 | 5.25 | 1.55 | 0.44 | 0.28 | 0.11 | 0.28 | 13.73 | |||||||||||||
1968 | 0.00 | 0.23 | 0.30 | 0.40 | 1.21 | 2.32 | 2.60 | 0.60 | 0.39 | 0.33 | 0.12 | 0.21 | 8.71 | |||||||||||||
1969 | 0.00 | 0.00 | 0.73 | 0.75 | 2.61 | 2.01 | 1.96 | 0.53 | 0.45 | 2.74 | 0.12 | 0.15 | 12.05 | |||||||||||||
1970 | 0.00 | 0.00 | 0.43 | 0.97 | 0.00 | 0.99 | 2.75 | 1.86 | 0.92 | 1.66 | 0.24 | 0.00 | 9.82 | |||||||||||||
1971 | 0.25 | 0.28 | 0.76 | 0.76 | 1.13 | 0.00 | 1.46 | 0.42 | 1.25 | 0.55 | 1.05 | 0.00 | 7.91 | |||||||||||||
1972 | 1.51 | 0.11 | 0.31 | 0.18 | 1.90 | 1.59 | 3.47 | 1.33 | 2.97 | 0.40 | 4.65 | 0.58 | 19.00 | |||||||||||||
1973 | ----- | z | 0.01 | 2.02 | 1.60 | 4.81 | 0.55 | 8.53 | 0.63 | 0.35 | 0.50 | 0.04 | 1.73 | 20.77 | a | |||||||||||
1974 | 0.59 | 0.01 | 0.96 | 0.10 | 1.71 | 1.33 | 1.46 | 0.48 | 0.41 | 0.94 | 1.04 | 0.60 | 9.63 | |||||||||||||
1975 | 0.06 | 0.10 | 0.05 | 0.44 | 3.27 | 1.36 | 1.56 | 0.35 | 0.36 | 0.05 | 0.69 | 0.00 | 8.29 | |||||||||||||
1976 | 0.17 | 0.00 | 0.50 | 2.32 | 0.96 | 0.43 | 1.91 | 2.53 | 1.79 | 1.21 | 0.15 | 0.00 | 11.97 | |||||||||||||
1977 | 0.01 | 0.00 | 0.00 | a | 0.45 | 4.36 | 1.09 | 4.20 | 1.93 | 0.20 | 0.76 | 0.00 | 0.00 | 13.00 | ||||||||||||
1978 | 0.00 | 0.55 | 0.22 | 0.57 | 3.29 | 1.47 | 0.82 | 2.49 | 0.24 | 0.40 | 0.48 | 0.19 | 10.72 | |||||||||||||
1979 | 0.27 | a | 0.02 | 1.59 | 1.83 | 3.62 | 2.40 | 4.68 | 1.86 | 0.57 | 0.43 | 0.67 | 1.34 | 19.28 | ||||||||||||
1980 | 0.59 | 0.37 | 1.56 | 5.85 | 2.58 | 0.62 | 0.82 | 0.51 | 1.91 | 0.00 | 0.20 | 0.00 | 15.01 | |||||||||||||
1981 | 0.23 | 0.10 | 1.91 | 0.00 | 4.18 | 0.90 | 2.85 | 2.25 | 0.73 | 0.22 | 0.27 | 0.79 | 14.43 | |||||||||||||
1982 | 0.13 | 0.74 | 0.14 | 0.36 | 2.86 | 2.64 | 1.83 | 0.84 | 1.18 | 0.38 | 0.00 | 0.23 | 11.33 | |||||||||||||
1983 | 0.20 | 0.75 | e | 2.62 | 0.64 | 1.17 | 1.66 | 0.51 | 0.31 | 0.34 | 1.13 | 0.67 | 0.69 | 10.69 | ||||||||||||
1984 | 0.94 | 0.31 | 2.15 | 1.67 | 1.34 | 0.54 | 2.10 | 4.28 | 0.17 | 2.15 | 0.15 | 0.21 | 16.01 | |||||||||||||
1985 | 0.43 | 0.29 | 0.47 | 1.47 | 3.87 | 0.93 | 2.79 | 0.31 | 1.49 | 0.83 | 0.89 | 0.40 | 14.17 | |||||||||||||
1986 | 0.04 | 0.18 | 0.03 | 1.70 | 0.48 | 3.27 | 3.36 | 3.84 | 0.99 | 1.44 | 0.15 | 0.31 | 15.79 | |||||||||||||
1987 | 0.55 | 1.58 | 0.89 | 0.72 | 7.48 | 1.29 | 0.80 | 3.19 | 0.79 | 0.09 | 0.56 | 0.59 | 18.53 | |||||||||||||
1988 | 1.23 | 0.43 | 0.54 | 1.38 | 2.00 | 3.98 | 1.50 | 0.93 | 2.22 | 0.09 | 0.07 | 0.53 | 14.90 | |||||||||||||
1989 | 0.32 | 0.22 | 0.27 | 0.24 | 1.95 | 2.13 | 1.37 | 2.22 | 1.23 | 0.19 | 0.05 | 0.40 | 10.59 | |||||||||||||
1990 | 1.02 | 0.79 | 1.49 | 0.77 | 2.88 | 1.01 | 3.68 | 0.36 | 2.48 | 0.94 | 0.67 | 0.06 | 16.15 | |||||||||||||
1991 | 0.20 | 0.02 | 1.07 | 1.08 | 2.29 | 1.64 | 2.87 | 5.05 | 0.55 | 0.42 | 1.28 | 1.03 | 17.50 | |||||||||||||
1992 | 0.39 | 0.00 | 1.31 | 0.73 | 0.43 | 5.20 | 1.80 | 3.37 | 0.05 | 0.47 | 0.95 | 0.19 | 14.89 | |||||||||||||
1993 | 0.44 | 0.30 | 0.70 | 1.47 | 2.69 | 1.31 | 1.96 | 4.85 | 0.86 | 2.60 | 0.66 | 0.02 | 17.86 | |||||||||||||
1994 | 0.39 | 0.00 | 0.87 | 1.54 | 2.07 | 1.40 | 1.70 | 1.71 | 0.66 | 2.18 | 0.38 | 0.16 | 13.06 | |||||||||||||
1995 | 0.04 | 0.19 | 0.63 | 2.27 | 3.40 | 4.44 | 1.79 | 2.58 | 0.59 | 0.04 | 0.00 | 0.04 | 16.01 | |||||||||||||
1996 | 0.05 | 0.11 | 0.72 | 0.52 | 3.15 | 1.61 | 3.70 | 0.97 | 1.13 | 0.11 | 0.11 | 0.13 | 12.31 | |||||||||||||
1997 | 0.18 | 0.35 | 0.08 | 1.73 | 0.75 | 3.85 | 2.18 | 3.33 | 0.57 | 1.70 | 0.93 | 0.15 | 15.80 | |||||||||||||
1998 | 0.00 | 0.90 | 0.49 | a | 0.90 | 1.30 | 2.14 | 8.95 | 2.58 | 0.55 | 0.97 | 0.42 | 0.13 | 19.33 | ||||||||||||
1999 | 0.12 | 0.00 | 0.23 | 4.88 | 5.25 | 2.34 | 4.90 | 2.55 | 1.14 | 0.24 | 0.13 | 0.29 | 22.07 | |||||||||||||
2000 | 0.04 | 0.34 | 1.96 | 1.25 | 0.29 | 0.33 | 3.80 | 1.74 | 0.51 | 1.70 | 0.37 | 0.12 | 12.45 | |||||||||||||
2001 | 0.34 | 0.15 | 0.50 | 1.63 | 4.01 | 3.11 | 3.95 | 0.92 | 1.17 | 0.00 | 1.02 | 0.10 | 16.90 | |||||||||||||
2002 | 0.29 | 0.00 | 0.02 | 0.00 | 0.15 | 1.38 | 0.79 | 1.66 | 1.00 | 1.24 | 0.06 | 0.18 | 6.77 | |||||||||||||
2003 | 0.11 | 0.22 | 1.37 | 0.84 | 0.74 | 2.70 | 1.11 | 0.86 | 0.66 | 0.17 | 0.12 | 0.00 | 8.90 | |||||||||||||
2004 | 0.08 | 0.40 | 0.17 | 2.31 | 0.09 | 3.30 | 3.42 | 3.12 | 1.82 | 0.07 | 0.51 | 0.16 | 15.45 | |||||||||||||
2005 | 0.23 | 0.00 | 0.85 | 1.95 | 1.47 | 1.20 | 0.79 | 2.52 | 0.75 | 3.02 | 0.00 | 0.24 | 13.02 | |||||||||||||
2006 | 0.16 | 0.00 | 0.95 | 0.03 | 1.52 | 0.58 | 2.52 | 3.34 | 1.71 | 2.32 | 0.08 | 0.85 | 14.06 | |||||||||||||
2007 | 0.35 | 0.08 | 0.56 | 2.02 | 3.41 | 1.11 | 0.39 | 3.44 | 0.39 | 0.29 | 0.08 | 0.66 | 12.78 | |||||||||||||
2008 | 0.06 | 0.26 | 0.42 | 0.64 | 0.25 | a | 1.10 | 2.01 | 4.78 | 0.19 | 2.03 | 0.66 | 0.16 | 12.56 | ||||||||||||
2009 | 0.04 | 0.26 | 0.37 | 1.90 | 1.02 | 2.50 | 3.39 | 0.83 | 0.82 | 1.81 | 0.23 | 0.46 | 13.63 | |||||||||||||
2010 | 0.12 | 0.39 | 0.91 | 0.96 | a | 0.59 | 0.44 | 8.00 | 2.53 | 0.83 | 0.00 | 0.00 | 0.02 | 14.79 | ||||||||||||
2011 | 0.13 | 0.14 | 0.39 | 0.36 | 2.69 | 0.54 | 1.09 | 1.64 | 0.71 | 0.59 | 0.25 | 0.56 | 9.09 | |||||||||||||
2012 | 0.00 | 0.63 | 0.12 | 1.52 | 0.42 | a | 0.25 | a | 2.13 | 0.46 | 1.44 | 0.21 | 0.07 | 0.11 | 7.36 | |||||||||||
2013 | 0.12 | 0.21 | 0.45 | 0.16 | 1.62 | 1.44 | 2.67 | 1.74 | 8.82 | 0.93 | 0.12 | c | 0.00 | 18.28 | ||||||||||||
2014 | 0.14 | 0.23 | 0.11 | 0.63 | 0.53 | 0.96 | 5.81 | 3.42 | 0.49 | 2.02 | 0.08 | 0.25 | 14.67 | |||||||||||||
2015 | 0.27 | 0.65 | 0.54 | 0.84 | 6.53 | 2.26 | 2.22 | 2.68 | a | 0.98 | 1.13 | 0.34 | 0.17 | 18.61 | ||||||||||||
2016 | 0.12 | 0.46 | 0.50 | 2.52 | 2.06 | 1.19 | 1.35 | 0.57 | 0.17 | 0.00 | 0.06 | 0.14 | 9.14 | |||||||||||||
2017 | 0.48 | 0.00 | 2.19 | 1.95 | 3.51 | 1.14 | 5.23 | 2.59 | 2.51 | 0.41 | 0.05 | 0.00 | 20.06 | |||||||||||||
2018 | 0.14 | 0.25 | 0.04 | 0.58 | 1.20 | 1.66 | 4.27 | 0.98 | 0.47 | 2.28 | 0.00 | 0.04 | 11.91 | |||||||||||||
2019 | 0.26 | 0.37 | 1.26 | 0.03 | 2.92 | 3.04 | 1.71 | 2.37 | 0.12 | 0.36 | 0.26 | 0.16 | 12.86 | |||||||||||||
2020 | 0.03 | 0.31 | 0.42 | 0.05 | 1.17 | 0.96 | 2.97 | 1.68 | 0.96 | 0.45 | 0.06 | 0.29 | 9.35 | |||||||||||||
2021 | 0.39 | 0.19 | 1.32 | 0.59 | 4.93 | 1.33 | 1.48 | 1.05 | 1.62 | 0.05 | 0.00 | 0.00 | 12.95 | |||||||||||||
2022 | 0.21 | 0.16 | 0.88 | 0.00 | 1.38 | 2.50 | 3.66 | 2.09 | 0.14 | 0.00 | 0.07 | 0.54 | 11.63 | |||||||||||||
2023 | 1.08 | 0.20 | 0.00 | 0.81 | 2.77 | 6.54 | 2.86 | 1.17 | 1.60 | 0.20 | 0.04 | 0.46 | 17.73 | |||||||||||||
2024 | 0.23 | 0.60 | 0.27 | 0.29 | f | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 1.10 | i | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 0.28 | 0.25 | 0.66 | 1.10 | 2.20 | 1.80 | 2.70 | 2.14 | 1.10 | 0.82 | 0.47 | 0.28 | 13.67 | |||||||||||||
S.D. | 0.32 | 0.29 | 0.59 | 1.08 | 1.50 | 1.33 | 1.73 | 1.58 | 1.30 | 0.85 | 0.98 | 0.35 | 3.85 | |||||||||||||
SKEW | 1.86 | 2.02 | 1.23 | 1.92 | 0.89 | 1.27 | 1.43 | 1.24 | 3.44 | 1.03 | 5.37 | 2.03 | 0.54 | |||||||||||||
MAX | 1.51 | 1.58 | 2.62 | 5.85 | 7.48 | 6.54 | 8.95 | 7.68 | 8.82 | 3.02 | 7.41 | 1.73 | 27.15 | |||||||||||||
MIN | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.39 | 0.03 | 0.00 | 0.00 | 0.00 | 0.00 | 5.57 | |||||||||||||
YRS | 81 | 83 | 83 | 81 | 82 | 82 | 79 | 81 | 80 | 81 | 82 | 81 | 73 |