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 | 64.28 | 63.44 | 64.40 | a | 59.48 | 47.55 | 27.77 | 16.17 | a | 49.01 | e | |||||
1993 | 12.20 | a | 12.50 | 26.32 | a | 42.35 | 55.90 | 62.55 | 68.06 | 69.65 | a | 55.71 | b | 45.73 | 28.24 | a | 18.24 | 41.45 | ||||||||
1994 | 1.94 | 9.62 | 34.39 | 44.53 | 61.12 | a | 67.53 | a | 68.03 | a | 66.63 | 62.57 | 50.44 | 34.95 | 21.24 | 43.58 | ||||||||||
1995 | 15.95 | a | 20.39 | 32.29 | 39.23 | 53.82 | 68.29 | a | 72.02 | b | 72.76 | 58.90 | 45.58 | 26.77 | 19.92 | 43.83 | ||||||||||
1996 | 8.27 | a | 19.34 | 24.11 | 41.77 | 53.13 | 67.71 | a | 68.58 | 69.48 | 58.63 | 48.31 | 21.45 | 8.58 | a | 40.78 | ||||||||||
1997 | 6.42 | 16.43 | 26.13 | a | 40.05 | 53.32 | a | 69.72 | 71.44 | 69.53 | 63.45 | 49.72 | a | 27.30 | 25.87 | 43.28 | ||||||||||
1998 | 18.65 | a | 31.32 | 27.19 | 47.98 | 62.69 | 64.15 | 72.24 | 71.47 | 66.42 | 50.35 | 34.50 | 24.90 | 47.66 | ||||||||||||
1999 | 11.95 | 29.80 | 33.94 | 46.27 | 59.60 | a | 67.41 | c | 75.65 | 71.44 | 60.05 | 48.27 | 41.98 | a | 25.65 | 47.67 | ||||||||||
2000 | 16.97 | 30.02 | 40.47 | 45.42 | 60.05 | 66.28 | 71.77 | 71.40 | 62.70 | 51.40 | 24.59 | a | 5.47 | a | 45.54 | |||||||||||
2001 | 18.16 | 9.30 | 24.65 | 46.58 | 59.21 | 67.87 | 74.37 | 72.03 | 61.20 | 47.61 | 42.78 | 22.55 | 45.53 | |||||||||||||
2002 | 20.94 | 28.89 | 20.42 | 45.82 | 53.18 | 70.48 | 75.89 | 69.31 | 63.30 | 39.12 | a | 32.20 | 25.19 | 45.39 | ||||||||||||
2003 | 15.95 | a | 15.86 | 31.52 | 47.70 | 55.44 | 65.13 | 71.82 | a | 72.12 | a | 59.83 | 50.58 | 27.85 | 23.90 | 44.81 | ||||||||||
2004 | 12.03 | b | 18.53 | 36.47 | 48.22 | 56.76 | 64.34 | a | 69.50 | 65.10 | 64.20 | 49.45 | 36.70 | 23.82 | a | 45.43 | ||||||||||
2005 | 13.98 | b | 27.05 | 32.39 | 50.42 | 56.11 | 69.68 | 73.34 | 69.23 | 66.85 | 49.58 | 35.17 | 16.74 | 46.71 | ||||||||||||
2006 | 27.69 | 20.59 | 31.79 | 50.83 | 59.47 | 68.12 | 75.50 | 70.11 | 56.67 | 44.60 | a | 33.45 | 26.39 | 47.10 | ||||||||||||
2007 | 16.53 | a | 11.02 | 35.74 | d | 43.22 | 62.03 | 68.83 | 73.92 | a | 69.81 | 63.35 | 52.12 | b | 33.17 | 15.81 | 45.46 | |||||||||
2008 | 13.08 | 15.71 | 28.48 | 41.86 | a | 55.23 | 65.17 | 72.32 | a | 69.71 | 62.20 | 47.18 | a | 31.38 | 10.69 | 42.75 | ||||||||||
2009 | 8.95 | 19.84 | 30.68 | 43.68 | 57.82 | 63.95 | 66.06 | 66.98 | b | 62.35 | 39.30 | a | 40.10 | a | 12.06 | 42.65 | ||||||||||
2010 | 9.84 | 13.32 | 35.64 | b | 51.75 | 56.69 | 66.83 | 72.11 | 73.18 | 58.78 | 50.63 | 32.90 | 13.32 | 44.58 | ||||||||||||
2011 | 7.03 | 13.34 | 24.58 | 43.15 | 55.35 | 65.95 | 76.10 | 69.68 | 58.71 | a | 52.08 | 34.79 | a | 26.68 | 43.95 | |||||||||||
2012 | ----- | z | 25.26 | 45.97 | a | 50.25 | 61.95 | 70.82 | 78.19 | 68.61 | ----- | z | ----- | z | ----- | z | ----- | z | 57.29 | e | ||||||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 13.50 | 19.41 | 31.16 | 45.55 | 57.44 | 66.91 | 71.92 | 69.65 | 61.27 | 47.98 | 32.40 | 19.16 | 44.64 | |||||||||||||
S.D. | 5.93 | 7.16 | 6.15 | 3.67 | 3.13 | 2.34 | 3.64 | 2.34 | 2.99 | 3.67 | 5.63 | 6.52 | 1.95 | |||||||||||||
SKEW | 0.31 | 0.30 | 0.46 | 0.06 | 0.20 | -0.06 | -0.50 | -0.67 | 0.06 | -1.26 | 0.07 | -0.57 | -0.21 | |||||||||||||
MAX | 27.69 | 31.32 | 45.97 | 51.75 | 62.69 | 70.82 | 78.19 | 73.18 | 66.85 | 52.12 | 42.78 | 26.68 | 47.67 | |||||||||||||
MIN | 1.94 | 9.30 | 20.42 | 39.23 | 53.13 | 62.55 | 63.44 | 64.40 | 55.71 | 39.12 | 21.45 | 5.47 | 40.78 | |||||||||||||
YRS | 19 | 20 | 20 | 20 | 20 | 21 | 21 | 21 | 20 | 20 | 20 | 20 | 19 |