YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | 16.30 | d | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 16.30 | k |
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 70.32 | f | 54.60 | y | 48.27 | p | ----- | 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 | 48.72 | f | 29.12 | b | ----- | z | 29.12 | k |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 30.73 | ----- | z | 30.73 | k | |
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 | 26.36 | h | ----- | 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 | 66.07 | a | ----- | z | 28.70 | b | 11.47 | 35.41 | i | |
1979 | -2.41 | b | 1.38 | 23.50 | 40.53 | 50.90 | 65.05 | 72.61 | c | 66.98 | b | 62.00 | c | ----- | z | ----- | z | ----- | z | 42.28 | c | |||||
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 | 64.40 | 64.17 | a | 64.70 | c | 59.39 | b | 45.70 | a | 29.47 | 14.55 | b | 48.91 | e | ||
1993 | 7.52 | b | 11.93 | 29.36 | b | 43.57 | a | 55.75 | c | 62.02 | 67.71 | 68.71 | 54.05 | a | 45.48 | b | 27.80 | e | 18.38 | a | 41.02 | |||||
1994 | 0.69 | 4.90 | c | 31.61 | 44.67 | a | 59.33 | a | 66.84 | a | 67.75 | a | 66.03 | 61.38 | b | 49.92 | 31.81 | a | 19.02 | a | 42.00 | |||||
1995 | 14.91 | d | 18.77 | b | 29.35 | a | 38.22 | 52.28 | a | 68.17 | a | 69.14 | b | 72.29 | c | 58.37 | c | 44.17 | b | 25.25 | 17.47 | a | 42.37 | |||
1996 | 4.96 | c | 15.76 | 20.37 | 39.38 | a | 52.02 | 66.19 | a | 67.35 | d | 69.88 | c | 59.40 | a | 45.20 | d | 18.43 | b | 6.37 | a | 38.78 | ||||
1997 | 3.45 | b | 13.92 | b | 24.45 | a | 38.90 | 51.38 | b | 67.00 | d | 71.12 | a | 68.83 | a | 60.95 | b | 47.94 | d | 26.22 | 25.32 | a | 41.62 | |||
1998 | 14.69 | b | 29.38 | b | 24.43 | b | 45.77 | d | 60.19 | 62.25 | b | 72.83 | b | 70.71 | c | 65.57 | c | 49.23 | i | 34.11 | b | 23.39 | 45.76 | a | ||
1999 | 10.43 | c | 27.54 | b | 34.36 | b | 44.95 | a | 57.74 | b | 66.31 | a | 72.46 | c | 69.25 | a | 57.85 | c | 45.05 | a | 40.12 | b | 25.21 | e | 45.94 | |
2000 | 15.19 | d | 26.26 | d | 38.65 | 42.71 | b | 58.03 | b | 65.33 | a | 71.82 | c | 70.86 | c | 60.67 | c | 50.16 | b | 22.62 | d | 5.90 | f | 47.48 | a | |
2001 | 15.11 | d | 4.81 | a | 21.64 | c | 43.29 | a | 58.84 | 66.92 | 74.36 | c | 72.12 | b | 61.30 | 45.83 | b | 40.18 | b | 21.29 | b | 43.81 | ||||
2002 | 18.06 | d | 26.82 | 20.50 | a | 42.82 | 51.60 | 70.15 | c | 76.90 | 70.21 | 63.43 | a | 38.87 | a | 30.71 | a | 22.71 | 44.40 | |||||||
2003 | 13.91 | b | 11.33 | a | 27.72 | a | 46.40 | 55.50 | 65.38 | 71.97 | 73.10 | 59.86 | a | 49.81 | 24.85 | 22.95 | b | 43.56 | ||||||||
2004 | 10.64 | f | 17.96 | b | 36.13 | 46.00 | b | 54.35 | 61.80 | 68.17 | a | 64.13 | 63.32 | 48.25 | c | 34.93 | a | 22.95 | a | 47.09 | a | |||||
2005 | 9.82 | a | 23.10 | b | 30.62 | a | 48.03 | 54.35 | 68.83 | 73.38 | a | 69.65 | a | 64.38 | 47.71 | b | 35.35 | c | 15.32 | 45.05 | ||||||
2006 | 26.40 | a | 19.64 | 32.89 | 49.38 | 57.20 | a | 67.72 | 76.98 | 72.08 | 56.13 | 43.68 | a | 31.02 | 24.28 | b | 46.45 | |||||||||
2007 | 12.03 | 7.09 | a | 33.00 | 40.08 | 60.73 | 67.98 | a | 74.45 | 69.26 | 61.47 | 49.58 | 31.59 | a | 12.47 | 43.31 | ||||||||||
2008 | 8.37 | 8.36 | r | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 8.37 | k | |
2009 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2010 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 11.14 | 16.29 | 28.66 | 43.42 | 55.64 | 66.02 | 71.36 | 69.34 | 60.87 | 46.49 | 30.16 | 18.95 | 43.19 | |||||||||||||
S.D. | 7.02 | 8.92 | 5.69 | 3.33 | 3.34 | 2.39 | 3.53 | 2.61 | 3.12 | 3.04 | 5.49 | 5.60 | 2.18 | |||||||||||||
SKEW | -0.02 | -0.11 | 0.02 | 0.02 | -0.00 | -0.38 | -0.23 | -0.59 | -0.30 | -0.84 | -0.03 | -0.74 | -0.35 | |||||||||||||
MAX | 26.40 | 29.38 | 38.65 | 49.38 | 60.73 | 70.15 | 76.98 | 73.10 | 66.07 | 50.16 | 40.18 | 25.32 | 46.45 | |||||||||||||
MIN | -2.41 | 1.38 | 20.37 | 38.22 | 50.90 | 61.80 | 64.17 | 64.13 | 54.05 | 38.87 | 18.43 | 6.37 | 38.78 | |||||||||||||
YRS | 17 | 16 | 16 | 16 | 16 | 17 | 17 | 17 | 18 | 15 | 19 | 16 | 12 |