YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1986 | ----- | z | ----- | z | ----- | z | ----- | z | 50.89 | 54.02 | 60.87 | 59.65 | 48.67 | 41.06 | 24.85 | 12.67 | b | 44.08 | d | |||||||
1987 | 3.97 | 7.13 | a | 24.11 | d | 41.78 | 49.00 | 59.11 | b | 64.03 | b | 59.40 | b | 51.81 | d | 41.73 | e | 26.61 | c | 18.09 | d | 37.23 | ||||
1988 | 9.33 | a | 7.80 | a | 18.57 | a | 37.25 | 51.00 | 56.70 | c | 65.03 | 62.84 | 51.91 | c | 38.45 | b | 31.76 | c | 10.25 | a | 36.74 | |||||
1989 | 7.35 | 4.56 | a | 12.95 | c | 34.59 | b | 54.57 | b | 58.43 | 62.26 | 62.27 | a | 54.50 | 41.90 | a | 26.00 | a | -0.20 | c | 34.93 | |||||
1990 | 13.29 | 5.88 | 19.05 | b | 37.29 | a | 48.19 | 60.37 | 63.48 | b | 64.53 | 52.16 | a | 43.13 | 29.72 | c | 17.52 | a | 37.88 | |||||||
1991 | 0.67 | a | 11.12 | 23.08 | a | 36.78 | a | 49.18 | a | 58.28 | a | 63.55 | a | 64.90 | g | 48.67 | 41.98 | 30.66 | b | 10.62 | c | 34.05 | a | |||
1992 | 7.23 | a | 7.27 | c | 15.10 | 34.42 | 50.23 | 58.07 | 58.05 | a | 61.75 | a | 55.11 | c | 38.81 | 27.80 | 17.87 | 35.97 | ||||||||
1993 | 5.55 | -3.61 | 18.32 | 36.88 | 49.50 | 57.65 | 62.55 | 62.48 | 52.52 | b | 36.69 | 27.63 | 16.95 | 35.26 | ||||||||||||
1994 | -5.31 | 3.04 | 20.69 | 34.00 | a | 46.34 | 60.79 | a | 62.16 | 57.83 | a | 50.08 | 42.02 | a | 32.63 | 16.94 | 35.10 | |||||||||
1995 | 11.66 | 2.86 | 21.10 | a | 31.18 | 48.02 | a | 57.72 | a | 64.80 | a | 61.73 | a | 48.88 | 45.29 | 25.45 | 9.98 | 35.72 | ||||||||
1996 | 5.50 | b | 10.38 | 19.47 | 34.50 | 44.08 | 56.58 | 61.79 | b | 60.98 | a | 53.32 | 39.76 | 27.28 | a | 24.42 | 36.50 | |||||||||
1997 | 5.13 | 6.80 | 14.77 | 32.97 | 43.90 | 57.07 | 62.66 | c | 57.74 | 50.17 | 37.60 | 24.28 | 8.97 | a | 33.50 | |||||||||||
1998 | 4.56 | 12.89 | 21.44 | 35.25 | 53.21 | b | 58.33 | 62.35 | 59.10 | a | 51.48 | 38.50 | 26.26 | a | 15.65 | 36.59 | ||||||||||
1999 | 5.52 | 11.93 | 27.65 | 34.00 | 53.92 | 63.02 | c | 64.88 | e | 60.87 | a | 59.59 | a | 38.44 | 32.79 | a | 20.60 | a | 39.43 | |||||||
2000 | 5.81 | 8.95 | 28.06 | 35.21 | b | 47.10 | 56.76 | a | 61.72 | a | 60.95 | a | 48.06 | l | 40.52 | a | 32.93 | 10.58 | e | 35.33 | a | |||||
2001 | 6.80 | a | 8.80 | 17.86 | b | 33.88 | b | 53.77 | a | 59.48 | 62.58 | a | 63.52 | 54.62 | d | 44.32 | 33.97 | 24.50 | a | 38.67 | ||||||
2002 | 11.92 | 10.54 | 19.68 | a | 36.40 | 44.98 | 55.18 | 63.33 | b | 63.37 | 56.80 | 37.05 | a | 25.55 | a | 14.44 | 36.60 | |||||||||
2003 | 0.44 | 2.42 | b | 16.95 | a | 30.28 | 46.68 | 59.20 | 63.03 | 62.74 | 56.13 | 40.71 | 31.33 | 16.84 | 35.56 | |||||||||||
2004 | -0.53 | 8.60 | 21.29 | 36.33 | 49.03 | 54.55 | a | 63.61 | 61.65 | 51.79 | a | 42.47 | 28.25 | 10.76 | 35.65 | |||||||||||
2005 | 2.76 | 12.16 | 17.23 | 37.15 | 46.45 | 61.68 | 64.92 | 63.30 | a | 54.62 | 45.10 | a | 30.88 | a | 15.81 | 37.67 | ||||||||||
2006 | 12.60 | 8.70 | a | 21.63 | 39.20 | 51.31 | 62.40 | a | 66.97 | 58.63 | 52.98 | 41.39 | 34.69 | a | 21.48 | 39.33 | ||||||||||
2007 | 10.39 | 4.34 | 18.42 | 33.18 | 47.69 | 58.70 | 63.18 | 59.31 | 53.72 | a | 44.98 | 26.97 | 11.23 | 36.01 | ||||||||||||
2008 | 9.77 | 8.36 | 12.48 | 38.13 | 47.02 | 58.83 | 65.65 | 61.95 | a | 53.15 | 40.82 | 32.73 | 11.83 | a | 36.73 | |||||||||||
2009 | -3.10 | 11.46 | 17.81 | 37.53 | 47.52 | 58.28 | 63.18 | 64.05 | 52.00 | a | 37.23 | 35.13 | 17.69 | b | 36.57 | |||||||||||
2010 | 15.13 | 20.27 | 27.93 | c | 41.03 | 51.55 | 58.47 | 67.98 | 63.26 | 55.02 | 41.74 | 30.22 | a | 19.92 | 41.04 | |||||||||||
2011 | 10.55 | 6.80 | 19.39 | 33.38 | 48.81 | 59.32 | 64.47 | 63.26 | 56.10 | 44.61 | 34.45 | a | 23.00 | f | 40.10 | a | ||||||||||
2012 | 7.69 | b | 10.36 | 27.65 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 15.23 | i | ||
2013 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2014 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
2015 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 6.33 | 8.07 | 20.10 | 35.70 | 49.00 | 58.42 | 63.43 | 61.49 | 53.03 | 41.01 | 29.65 | 15.02 | 36.76 | |||||||||||||
S.D. | 5.09 | 4.47 | 4.35 | 2.74 | 2.93 | 2.17 | 1.96 | 1.97 | 2.69 | 2.62 | 3.40 | 5.48 | 1.72 | |||||||||||||
SKEW | -0.43 | 0.00 | 0.38 | 0.27 | 0.22 | 0.08 | -0.13 | -0.45 | 0.27 | 0.02 | 0.05 | -0.51 | 0.67 | |||||||||||||
MAX | 15.13 | 20.27 | 28.06 | 41.78 | 54.57 | 63.02 | 67.98 | 64.53 | 59.59 | 45.29 | 35.13 | 24.50 | 41.04 | |||||||||||||
MIN | -5.31 | -3.61 | 12.48 | 30.28 | 43.90 | 54.02 | 58.05 | 57.74 | 48.67 | 36.69 | 24.28 | -0.20 | 33.50 | |||||||||||||
YRS | 26 | 26 | 26 | 25 | 26 | 26 | 26 | 25 | 25 | 26 | 26 | 25 | 22 |