| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1978 | 0.00 | z | 0.00 | z | 2.37 | 3.99 | 1.06 | 0.68 | 0.48 | 1.01 | 3.18 | 0.30 | 1.96 | 2.93 | 17.96 | |||||||||||
| 1979 | 4.36 | 8.18 | 2.58 | 5.48 | 2.38 | 0.44 | 0.12 | 1.24 | 1.32 | 6.04 | 5.30 | 7.69 | 45.13 | |||||||||||||
| 1980 | 7.37 | 3.69 | 5.00 | 4.23 | 1.15 | 0.97 | 0.00 | z | 0.00 | 0.55 | 1.96 | 4.49 | 8.77 | 38.18 | ||||||||||||
| 1981 | 2.38 | 3.17 | 4.13 | 1.88 | 2.55 | 0.82 | 0.05 | 0.02 | 2.48 | 5.36 | 9.50 | 15.79 | 48.13 | |||||||||||||
| 1982 | 8.03 | 4.10 | 5.91 | 6.24 | 0.34 | 1.56 | 0.06 | 0.32 | 1.54 | 7.17 | 5.81 | 10.48 | 51.56 | |||||||||||||
| 1983 | 7.52 | 12.09 | 8.96 | 4.76 | 2.16 | 0.61 | 2.32 | 1.80 | 0.52 | 0.94 | 12.95 | 10.83 | 65.46 | |||||||||||||
| 1984 | 1.13 | 8.88 | 5.43 | 4.47 | 2.21 | 1.42 | 0.04 | 0.05 | 0.33 | 3.87 | 15.83 | 3.88 | 47.54 | |||||||||||||
| 1985 | 0.59 | 3.33 | 4.86 | 1.53 | 1.20 | 1.42 | 0.11 | 0.46 | 0.83 | 3.30 | 5.61 | 3.93 | 27.17 | |||||||||||||
| 1986 | 5.91 | 11.20 | 4.23 | 2.26 | 2.50 | 0.54 | 0.11 | 0.00 | 4.74 | 2.74 | 7.40 | 2.23 | 43.86 | |||||||||||||
| 1987 | 6.65 | 5.10 | 3.42 | 1.16 | 0.82 | 0.18 | 0.88 | 0.16 | 0.00 | 0.17 | 3.99 | 12.79 | 35.32 | |||||||||||||
| 1988 | 7.40 | 0.98 | 3.24 | 3.40 | 3.32 | 1.82 | 0.00 | 0.08 | 0.74 | 0.18 | 11.13 | 4.94 | 37.23 | |||||||||||||
| 1989 | 5.04 | 2.84 | 7.26 | 1.83 | 1.80 | 0.45 | 0.13 | 1.55 | 2.00 | 3.12 | 2.76 | 1.45 | 30.23 | |||||||||||||
| 1990 | 6.46 | 5.04 | 2.28 | 1.80 | 2.01 | 0.89 | 0.51 | 1.29 | 0.31 | 3.92 | 4.02 | 3.35 | 31.88 | |||||||||||||
| 1991 | 2.48 | 2.73 | 5.98 | 4.22 | 2.99 | 0.97 | 0.74 | 0.31 | 0.00 | 2.26 | 5.84 | 3.75 | 32.27 | |||||||||||||
| 1992 | 3.97 | 2.13 | 2.11 | 5.21 | 0.00 | z | 2.52 | 0.41 | 0.00 | 0.31 | 2.87 | 5.03 | 9.96 | 34.52 | ||||||||||||
| 1993 | 6.29 | 4.24 | 3.11 | 6.49 | 4.45 | 1.65 | 0.83 | 1.01 | 0.00 | 0.46 | 2.00 | 6.04 | 36.57 | |||||||||||||
| 1994 | 4.11 | 4.56 | 2.57 | 1.47 | 1.46 | 0.90 | 0.02 | 0.00 | 1.07 | 1.31 | 9.96 | 4.91 | 32.34 | |||||||||||||
| 1995 | 13.11 | 2.61 | 5.89 | 4.57 | 1.61 | 1.89 | 0.65 | 0.07 | 0.77 | 1.73 | 4.66 | 11.87 | 49.43 | |||||||||||||
| 1996 | 13.13 | 9.27 | 3.25 | 6.37 | 3.54 | 0.42 | 0.27 | 0.01 | 1.49 | j | 5.06 | 9.84 | 19.22 | 70.38 | ||||||||||||
| 1997 | 6.63 | 3.63 | 5.27 | 2.25 | b | 2.09 | 1.03 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 20.90 | ||||||
| 1998 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 1999 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 2000 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 2001 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 2002 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 2003 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 2004 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | |
| 2005 | 0.00 | z | 0.00 | z | 5.35 | 2.78 | 3.97 | 1.11 | 0.09 | 0.00 | 0.38 | 1.81 | 7.02 | 12.81 | 35.32 | |||||||||||
| 2006 | 10.57 | 3.00 | 4.23 | 2.09 | 1.64 | 0.25 | a | 0.03 | 0.00 | 0.33 | 0.99 | 8.64 | 6.71 | 38.48 | ||||||||||||
| 2007 | 3.49 | 6.30 | 2.53 | 2.22 | 1.00 | 0.23 | 0.49 | 0.83 | 1.09 | 4.20 | 5.08 | 7.83 | 35.29 | |||||||||||||
| 2008 | 9.86 | 2.33 | a | 5.20 | 2.56 | 0.47 | 0.45 | 0.02 | 0.18 | 0.01 | 0.98 | 5.31 | 10.90 | 38.27 | ||||||||||||
| 2009 | 1.96 | 3.39 | 4.65 | 1.72 | 0.71 | 1.25 | 0.09 | 0.08 | 0.37 | 3.56 | 4.74 | 4.70 | 27.22 | |||||||||||||
| 2010 | 4.20 | 3.13 | 5.93 | 5.94 | 3.37 | 1.72 | 0.00 | 0.08 | 1.07 | 3.01 | 6.26 | 9.13 | 43.84 | |||||||||||||
| 2011 | 2.56 | 5.56 | 9.49 | 4.70 | 2.96 | 1.10 | 0.97 | 0.01 | 0.01 | 2.45 | 4.55 | 2.20 | 36.56 | |||||||||||||
| 2012 | 6.60 | 4.50 | 11.97 | 3.23 | 0.68 | 2.48 | 0.70 | 0.00 | 0.00 | 3.89 | a | 7.42 | 6.15 | 47.62 | ||||||||||||
| 2013 | 2.45 | 1.46 | 2.12 | 0.25 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 6.03 | ||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 5.71 | 4.72 | 4.80 | 3.53 | 2.02 | 1.06 | 0.39 | 0.39 | 0.92 | 2.73 | 6.56 | 7.60 | 40.06 | |||||||||||||
| S.D. | 3.32 | 2.86 | 2.36 | 1.69 | 1.11 | 0.64 | 0.50 | 0.55 | 1.12 | 1.85 | 3.28 | 4.47 | 9.25 | |||||||||||||
| SKEW | 0.62 | 1.20 | 1.24 | 0.31 | 0.40 | 0.65 | 2.28 | 1.27 | 1.93 | 0.52 | 1.05 | 0.72 | 0.82 | |||||||||||||
| MAX | 13.13 | 12.09 | 11.97 | 6.49 | 4.45 | 2.52 | 2.32 | 1.80 | 4.74 | 7.17 | 15.83 | 19.22 | 65.46 | |||||||||||||
| MIN | 0.59 | 0.98 | 2.11 | 1.16 | 0.34 | 0.18 | 0.00 | 0.00 | 0.00 | 0.17 | 1.96 | 1.45 | 27.17 | |||||||||||||
| NO YRS | 27 | 27 | 29 | 28 | 27 | 28 | 26 | 27 | 26 | 27 | 27 | 27 | 22 | |||||||||||||