YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1930 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1931 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1932 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1934 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 53.10 | 54.68 | 54.26 | 47.87 | 35.58 | 22.63 | 7.35 | 39.35 | e | |||||||
1993 | 1.93 | a | 4.71 | 17.00 | a | 32.23 | 45.16 | 53.30 | 58.77 | 59.29 | 43.72 | a | 33.68 | 19.52 | a | 9.29 | 31.55 | |||||||||
1994 | -7.39 | -0.29 | 24.77 | 32.27 | 48.77 | a | 57.10 | a | 57.26 | 56.71 | 51.37 | 40.26 | 26.40 | 14.00 | 33.44 | |||||||||||
1995 | 8.23 | a | 10.68 | 24.16 | 30.30 | 43.84 | 58.14 | a | 60.10 | a | 63.29 | 47.97 | 36.45 | 18.10 | 12.03 | 34.44 | ||||||||||
1996 | -2.68 | 9.07 | 13.52 | 29.23 | 43.77 | 56.93 | a | 57.58 | 58.94 | 48.70 | 36.81 | 13.67 | 1.13 | a | 30.56 | |||||||||||
1997 | -2.97 | 6.29 | 16.57 | a | 29.33 | 41.13 | a | 57.80 | 60.90 | 58.97 | 51.40 | 37.27 | a | 18.53 | 18.71 | 32.83 | ||||||||||
1998 | 10.93 | a | 24.75 | 19.26 | 36.10 | 50.87 | 53.50 | 61.45 | 61.00 | 53.80 | 40.10 | 27.13 | 14.48 | 37.78 | ||||||||||||
1999 | 2.52 | 20.71 | 23.19 | 35.93 | 48.87 | a | 57.26 | c | 64.90 | 60.10 | 48.13 | 35.13 | 29.62 | a | 15.06 | 36.79 | ||||||||||
2000 | 6.71 | 19.72 | 27.42 | 33.47 | 48.26 | 54.87 | 60.65 | 60.35 | 49.90 | 40.84 | 16.66 | a | -2.80 | a | 34.67 | |||||||||||
2001 | 9.61 | -0.36 | 16.06 | 35.53 | 48.26 | 56.57 | 63.45 | 60.94 | 50.37 | 35.90 | 31.93 | 15.16 | 35.29 | |||||||||||||
2002 | 11.65 | 18.96 | 11.16 | 33.77 | 40.32 | 59.63 | 64.81 | 59.68 | 52.33 | 30.53 | a | 21.57 | 16.13 | 35.04 | ||||||||||||
2003 | 6.32 | 4.64 | 19.13 | 35.37 | 43.74 | 54.63 | 60.26 | 60.13 | 47.37 | 38.68 | 19.20 | 17.16 | 33.89 | |||||||||||||
2004 | 2.48 | b | 10.69 | 26.23 | 32.73 | 44.03 | 52.50 | 59.23 | 53.48 | 53.47 | 38.90 | 26.80 | 14.33 | a | 34.57 | |||||||||||
2005 | 5.10 | b | 16.57 | 19.65 | 37.10 | 44.32 | 59.87 | 61.81 | 57.61 | 54.50 | 38.13 | 25.10 | 9.45 | 35.77 | ||||||||||||
2006 | 20.97 | 10.14 | 23.81 | 39.47 | 46.77 | 56.40 | 62.97 | 59.61 | 46.30 | 32.70 | a | 22.13 | 17.32 | 36.55 | ||||||||||||
2007 | 8.53 | a | 2.89 | 26.30 | d | 31.90 | 51.13 | 57.67 | 61.97 | a | 59.74 | 51.77 | 40.97 | a | 22.70 | 6.81 | 35.20 | |||||||||
2008 | 3.06 | 5.48 | 19.29 | 29.55 | a | 43.42 | 54.03 | 61.07 | a | 58.71 | 50.17 | 37.10 | 23.10 | 0.61 | 32.13 | |||||||||||
2009 | -1.39 | 10.11 | 20.42 | 31.80 | 44.19 | 53.77 | 55.39 | 56.07 | b | 51.90 | 32.81 | 29.45 | a | 4.42 | 32.41 | |||||||||||
2010 | 2.10 | 3.71 | 27.29 | 39.33 | 45.45 | 56.70 | 62.03 | 62.87 | 48.33 | 38.13 | 24.10 | 4.94 | 34.58 | |||||||||||||
2011 | -2.32 | 3.89 | 16.45 | 34.13 | 44.48 | 56.23 | 66.10 | 58.90 | 46.27 | 39.97 | 24.00 | 17.42 | 33.79 | |||||||||||||
2012 | ----- | z | 15.14 | 33.84 | 37.63 | 50.45 | 58.67 | 65.94 | 55.03 | ----- | z | ----- | z | ----- | z | ----- | z | 45.24 | e | |||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 4.39 | 9.88 | 21.28 | 33.86 | 45.86 | 56.13 | 61.01 | 58.84 | 49.78 | 37.00 | 23.12 | 10.65 | 34.28 | |||||||||||||
S.D. | 6.59 | 7.29 | 5.53 | 3.15 | 3.13 | 2.20 | 3.16 | 2.56 | 2.83 | 2.94 | 4.68 | 6.41 | 1.85 | |||||||||||||
SKEW | 0.52 | 0.47 | 0.26 | 0.20 | 0.20 | -0.06 | -0.25 | -0.48 | -0.19 | -0.52 | -0.04 | -0.60 | -0.14 | |||||||||||||
MAX | 20.97 | 24.75 | 33.84 | 39.47 | 51.13 | 59.87 | 66.10 | 63.29 | 54.50 | 40.97 | 31.93 | 18.71 | 37.78 | |||||||||||||
MIN | -7.39 | -0.36 | 11.16 | 29.23 | 40.32 | 52.50 | 54.68 | 53.48 | 43.72 | 30.53 | 13.67 | -2.80 | 30.56 | |||||||||||||
YRS | 19 | 20 | 20 | 20 | 20 | 21 | 21 | 21 | 20 | 20 | 20 | 20 | 19 |