YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 22.37 | 17.68 | 20.02 | j | ||
1945 | 17.23 | a | 16.89 | 19.77 | 19.23 | 33.23 | 36.10 | 44.26 | 46.29 | 36.10 | 31.55 | 24.43 | 16.74 | 28.49 | ||||||||||||
1946 | 12.52 | 16.32 | 22.68 | 31.30 | 29.29 | 40.70 | 45.84 | 44.81 | 38.30 | 29.26 | 18.23 | 22.42 | 29.31 | |||||||||||||
1947 | 11.61 | 11.50 | 17.23 | 23.57 | 33.65 | 36.80 | 44.68 | 46.68 | 41.10 | 35.32 | 15.80 | 16.90 | 27.90 | |||||||||||||
1948 | 11.55 | 12.48 | 12.55 | 27.43 | 33.23 | 39.83 | 45.03 | 46.61 | 42.30 | 29.03 | 17.03 | 15.57 | a | 27.72 | ||||||||||||
1949 | 5.26 | 13.00 | 21.52 | 27.13 | 34.71 | 42.00 | 46.23 | 44.06 | 37.83 | 28.87 | 33.33 | 17.55 | 29.29 | |||||||||||||
1950 | 15.42 | 20.54 | 19.10 | 24.40 | 29.65 | 38.87 | 42.60 | a | 41.33 | a | 36.40 | 36.29 | 24.40 | 23.97 | 29.41 | |||||||||||
1951 | 11.84 | 15.29 | 15.26 | 22.45 | a | 33.39 | 35.20 | 45.26 | 44.39 | 35.93 | 28.74 | 19.33 | 15.58 | 26.89 | ||||||||||||
1952 | 16.52 | 15.03 | 13.77 | 23.67 | 33.10 | 43.07 | 45.35 | 46.60 | a | 39.07 | 30.32 | 14.30 | 17.74 | 28.21 | ||||||||||||
1953 | 22.61 | 12.50 | 21.32 | 20.77 | 29.29 | 41.83 | 46.81 | 43.97 | 40.13 | 29.83 | h | 25.67 | 14.19 | 29.01 | a | |||||||||||
1954 | 19.90 | 23.25 | 14.48 | 30.63 | 32.13 | 39.10 | a | 48.97 | 44.52 | 41.37 | 32.20 | a | 24.33 | 18.87 | 30.81 | |||||||||||
1955 | 13.52 | 9.00 | 15.39 | 24.30 | 31.26 | 36.67 | 44.87 | a | 46.06 | 38.40 | 31.84 | 19.30 | 21.03 | 27.64 | ||||||||||||
1956 | 18.42 | 7.81 | c | 16.32 | c | 22.73 | 35.84 | 41.83 | 43.16 | 42.48 | 38.17 | a | 30.32 | 18.30 | 19.23 | 27.88 | ||||||||||
1957 | 10.47 | a | 21.79 | 17.58 | 19.57 | 30.16 | 40.17 | 47.32 | 45.77 | 35.03 | 30.32 | 16.30 | 20.67 | d | 27.93 | |||||||||||
1958 | 14.87 | 22.21 | 11.74 | 22.40 | 35.27 | a | 39.57 | 42.03 | 45.97 | 38.70 | 30.77 | 23.00 | 20.00 | 28.88 | ||||||||||||
1959 | 14.26 | 13.54 | 17.35 | 23.72 | a | 32.65 | 42.41 | a | 42.65 | 45.42 | 35.21 | a | 27.16 | 19.93 | 15.97 | 27.52 | ||||||||||
1960 | 8.61 | 7.38 | 21.10 | 27.03 | 31.65 | 40.03 | a | 44.14 | b | 43.52 | 39.67 | 31.61 | 22.64 | b | 14.61 | 27.67 | ||||||||||
1961 | 16.16 | 15.43 | 18.77 | a | 22.93 | 33.74 | 40.30 | 45.61 | 45.13 | 35.00 | 29.70 | a | 17.17 | 12.55 | 27.71 | |||||||||||
1962 | 9.57 | a | 17.56 | a | 14.61 | 26.66 | a | 34.07 | a | 37.62 | a | 42.58 | 41.73 | a | 38.07 | b | 32.00 | b | 23.50 | b | 21.29 | 28.27 | ||||
1963 | 3.32 | c | 17.89 | a | 14.52 | f | 25.63 | 33.34 | b | 39.70 | 47.07 | a | 45.07 | a | 40.69 | a | 35.43 | a | 25.03 | a | 14.73 | a | 29.81 | a | ||
1964 | 10.52 | 7.68 | a | 12.06 | 22.97 | a | 31.76 | b | ----- | z | 47.63 | a | 41.31 | b | 35.10 | 27.21 | c | 18.62 | a | 14.00 | a | 24.44 | a | |||
1965 | 16.37 | a | 12.04 | 5.74 | 25.97 | a | 30.45 | 38.53 | 44.48 | b | 41.27 | a | 33.12 | d | 32.40 | a | 27.25 | b | 19.28 | b | 27.24 | |||||
1966 | 13.80 | a | 9.15 | b | 19.48 | 22.31 | d | 32.32 | c | 39.13 | 46.40 | a | 41.03 | a | 39.93 | c | 29.48 | 24.57 | b | 17.14 | c | 27.90 | ||||
1967 | 17.07 | d | 13.69 | b | 23.94 | 25.19 | c | 30.28 | b | 36.26 | c | 44.03 | b | 42.13 | a | 37.69 | a | 32.39 | c | 21.54 | b | 7.93 | c | 27.68 | ||
1968 | 17.03 | 15.82 | a | 19.72 | b | 20.96 | c | 29.61 | c | 39.17 | a | 42.19 | d | 41.71 | c | 36.39 | b | 30.79 | c | 17.24 | a | 13.81 | e | 27.04 | ||
1969 | 19.32 | f | 16.19 | a | 9.33 | a | 26.38 | a | 33.32 | c | 35.75 | f | 46.36 | f | 45.15 | d | 40.11 | c | 24.43 | a | 19.66 | a | 20.90 | k | 26.82 | d |
1970 | 17.59 | b | 17.15 | a | 14.45 | b | 20.54 | b | 32.40 | f | 37.19 | d | 45.07 | b | 45.62 | e | 35.21 | b | 24.78 | d | 20.36 | b | 19.40 | a | 27.03 | a |
1971 | 18.81 | d | 13.42 | b | 19.93 | d | 24.40 | e | 29.89 | d | 40.85 | c | 43.75 | c | 44.35 | e | 32.04 | b | 25.27 | a | 21.63 | c | 11.80 | a | 27.18 | |
1972 | 12.74 | d | 17.61 | a | 26.00 | b | 28.74 | c | 32.00 | b | 41.74 | c | 43.14 | b | 41.45 | b | 38.14 | b | 30.79 | b | 17.26 | c | 13.37 | d | 28.58 | |
1973 | 12.93 | a | 14.72 | c | 16.53 | a | 20.43 | 31.68 | 39.50 | 43.17 | b | 43.29 | 33.43 | 30.52 | 22.47 | 14.42 | 26.92 | |||||||||
1974 | 12.38 | b | 17.61 | 24.42 | 22.17 | 32.26 | 40.77 | 46.26 | 40.65 | 34.47 | 31.87 | 21.10 | 12.65 | 28.05 | ||||||||||||
1975 | 12.55 | 13.75 | d | 18.94 | 13.17 | 24.42 | 36.80 | 39.26 | 41.48 | 32.40 | 26.32 | 17.27 | 15.43 | a | 24.32 | |||||||||||
1976 | 13.58 | 13.61 | a | 11.87 | 23.93 | 30.52 | 38.03 | 45.84 | 43.23 | 36.33 | 24.97 | 19.27 | 12.13 | 26.11 | ||||||||||||
1977 | 9.48 | 20.32 | 17.81 | 32.17 | 34.84 | 42.83 | 42.71 | 41.13 | 38.20 | 36.32 | 24.27 | 15.61 | 29.64 | |||||||||||||
1978 | 15.26 | 16.30 | a | 22.03 | 25.67 | 34.81 | 41.17 | 46.97 | 42.65 | 38.21 | a | 29.90 | 18.83 | 5.20 | a | 28.08 | ||||||||||
1979 | 6.74 | 17.71 | 22.35 | ----- | z | 31.14 | b | 39.50 | 42.68 | 41.16 | 39.70 | 29.00 | 17.87 | 16.65 | 27.68 | a | ||||||||||
1980 | 9.16 | 18.28 | 19.68 | i | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 39.03 | ----- | z | ----- | z | 25.84 | 23.08 | h | ||||
1981 | ----- | z | ----- | z | 27.84 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 27.84 | k | |
1982 | 13.93 | b | 17.69 | b | 19.59 | b | 25.87 | 39.39 | c | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 23.29 | g | |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 31.78 | l | 28.78 | d | 21.79 | p | -2.67 | v | 28.78 | k |
1984 | 14.36 | q | 10.17 | k | 14.60 | k | 19.71 | f | 34.33 | a | 39.00 | b | 45.67 | d | 43.62 | e | 35.15 | c | 22.76 | b | 22.00 | w | ----- | z | 36.75 | f |
1985 | 2.11 | l | 6.47 | k | 14.23 | e | 25.29 | i | 34.07 | a | 37.96 | d | 46.13 | 42.61 | 32.14 | h | 25.12 | e | 17.50 | h | 17.42 | 31.08 | e | |||
1986 | 21.48 | d | 18.33 | a | 25.90 | 28.90 | 29.41 | d | 39.04 | e | 41.87 | a | 39.26 | 30.12 | d | 20.35 | 15.28 | l | 9.00 | a | 27.61 | a | ||||
1987 | 6.57 | j | 10.92 | d | 11.55 | i | 18.19 | i | 32.16 | f | 39.36 | b | 42.28 | b | 41.43 | h | 32.00 | g | 23.83 | h | 17.50 | r | -1.54 | r | 30.85 | i |
1988 | 2.17 | y | 5.17 | q | 4.96 | g | 19.73 | s | 33.19 | e | 43.30 | 44.07 | c | 45.00 | h | ----- | z | ----- | z | ----- | z | ----- | z | 40.19 | i | |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 42.23 | 44.94 | 44.32 | 41.07 | 32.26 | 26.03 | 8.63 | a | 34.21 | e | ||||||
1991 | 14.55 | b | 20.79 | 20.03 | 26.90 | 33.81 | 41.83 | 45.45 | 46.10 | 38.40 | 30.33 | a | ----- | z | 19.45 | i | 31.82 | b | ||||||||
1992 | 14.38 | j | 18.07 | 22.84 | 30.93 | 35.29 | 37.63 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 28.95 | g | |||||
1993 | 12.71 | 11.11 | 19.35 | 22.93 | 31.81 | 34.93 | 40.19 | 40.87 | a | 32.90 | 25.68 | 15.73 | 15.06 | 25.27 | ||||||||||||
1994 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1995 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1996 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1997 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1998 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1999 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2000 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2001 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2002 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2003 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2004 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2005 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2006 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2007 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2008 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
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 |
2011 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2012 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 13.65 | 15.27 | 18.17 | 24.51 | 32.39 | 39.49 | 44.49 | 43.53 | 37.19 | 29.57 | 20.93 | 16.05 | 27.85 | |||||||||||||
S.D. | 4.15 | 4.00 | 4.72 | 3.75 | 2.47 | 2.18 | 2.04 | 2.04 | 2.87 | 3.54 | 3.93 | 4.28 | 1.27 | |||||||||||||
SKEW | -0.20 | -0.15 | -0.28 | -0.26 | -0.30 | -0.19 | -0.28 | -0.09 | -0.41 | -0.34 | 0.76 | -0.19 | -0.45 | |||||||||||||
MAX | 22.61 | 23.25 | 27.84 | 32.17 | 39.39 | 43.30 | 48.97 | 46.68 | 42.30 | 36.32 | 33.33 | 25.84 | 30.81 | |||||||||||||
MIN | 3.32 | 7.38 | 5.74 | 13.17 | 24.42 | 34.93 | 39.26 | 39.26 | 30.12 | 20.35 | 14.30 | 5.20 | 24.32 | |||||||||||||
YRS | 39 | 42 | 41 | 39 | 42 | 42 | 42 | 41 | 41 | 41 | 38 | 40 | 30 |