| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1954 | 0.00 | z | 0.00 | z | 0.00 | z | 1.83 | 0.84 | 0.12 | 0.58 | 0.15 | 0.08 | 0.29 | 2.77 | 6.74 | 13.40 | ||||||||||
| 1955 | 3.17 | 3.29 | 2.63 | 0.08 | 0.15 | 0.06 | 0.14 | 0.47 | 0.08 | 0.03 | 2.04 | 9.46 | 21.60 | |||||||||||||
| 1956 | 4.97 | 3.78 | 0.36 | 1.37 | 0.01 | 0.21 | 0.57 | 0.40 | 0.11 | 1.10 | 0.85 | 1.43 | 15.16 | |||||||||||||
| 1957 | 2.80 | 2.26 | 0.09 | 0.49 | 0.47 | 0.00 | 0.53 | 0.83 | 0.08 | 0.27 | 4.48 | 3.18 | 15.48 | |||||||||||||
| 1958 | 1.37 | 0.55 | 4.66 | 0.19 | 0.33 | 0.32 | 0.97 | 0.86 | 0.41 | 1.69 | 0.44 | 4.47 | 16.26 | |||||||||||||
| 1959 | 8.64 | 5.94 | 0.93 | 1.30 | 0.98 | 0.09 | 0.18 | 0.21 | 0.11 | 0.70 | 0.78 | 1.39 | 21.25 | |||||||||||||
| 1960 | 0.78 | 2.39 | 1.88 | 0.50 | 0.42 | 0.12 | 1.13 | 0.07 | 0.69 | 0.03 | 1.52 | 1.41 | 10.94 | |||||||||||||
| 1961 | 3.48 | 3.50 | 0.11 | 2.93 | 0.14 | 0.39 | 0.06 | 0.08 | 0.15 | 3.94 | 4.51 | 0.64 | 19.93 | |||||||||||||
| 1962 | 4.50 | 0.97 | 3.79 | 0.34 | 0.28 | 0.00 | 0.23 | 0.29 | 0.03 | 0.46 | 0.27 | 1.47 | 12.63 | |||||||||||||
| 1963 | 6.67 | 1.37 | 3.87 | 1.30 | 2.66 | 0.06 | 0.29 | 0.02 | 1.17 | 1.03 | 0.73 | 0.92 | 20.09 | |||||||||||||
| 1964 | 1.11 | 0.35 | 0.60 | 0.34 | 0.18 | 0.07 | 0.27 | 0.20 | 0.20 | 0.16 | 2.88 | 3.66 | 10.02 | |||||||||||||
| 1965 | 2.45 | 7.56 | 3.75 | 1.08 | 0.43 | 0.07 | 0.74 | 0.41 | 1.17 | 1.93 | 9.27 | 2.05 | 30.91 | |||||||||||||
| 1966 | 0.91 | 4.31 | 0.75 | 0.54 | 0.17 | 0.08 | 0.37 | 0.31 | 0.62 | 1.08 | 2.19 | 1.16 | 12.49 | |||||||||||||
| 1967 | 3.85 | 2.13 | 10.90 | 1.19 | 2.05 | 2.50 | 1.12 | 1.33 | 0.08 | 0.77 | 1.69 | 5.09 | 32.70 | |||||||||||||
| 1968 | 4.31 | 5.19 | 6.93 | 2.00 | 2.56 | 0.12 | 0.42 | 0.26 | 0.21 | 0.80 | 4.86 | 7.07 | 34.73 | |||||||||||||
| 1969 | 7.75 | 3.51 | 3.17 | 1.79 | 0.27 | 0.37 | 0.53 | 0.71 | 0.49 | 0.31 | 0.50 | 5.81 | 25.21 | |||||||||||||
| 1970 | 3.49 | 1.64 | 0.29 | 1.37 | 0.02 | 0.02 | 0.15 | 0.23 | 0.44 | 0.48 | 8.71 | 1.77 | 18.61 | |||||||||||||
| 1971 | 13.66 | 0.78 | 2.92 | 1.13 | 0.10 | 0.21 | 0.09 | 0.54 | 0.25 | 0.07 | 0.24 | 0.14 | 20.13 | |||||||||||||
| 1972 | 0.35 | 8.31 | 2.00 | 0.30 | 0.00 | 0.29 | 0.04 | 0.84 | 0.02 | 1.00 | 0.39 | 2.17 | 15.71 | |||||||||||||
| 1973 | 2.14 | 0.81 | 1.35 | 0.44 | 0.57 | 0.08 | 0.02 | 0.02 | 0.04 | 0.34 | 0.98 | 3.48 | 10.27 | |||||||||||||
| 1974 | 9.00 | 0.12 | 3.33 | 0.75 | 0.54 | 0.00 | 0.51 | 0.12 | 0.12 | 1.57 | 2.25 | 0.37 | 18.68 | |||||||||||||
| 1975 | 3.30 | 4.96 | 1.89 | 0.10 | 0.03 | 0.05 | 0.23 | 0.61 | 0.11 | 0.37 | 2.08 | 0.01 | 13.74 | |||||||||||||
| 1976 | 2.78 | 2.16 | 3.71 | 0.98 | 0.01 | 0.02 | 0.19 | 0.10 | 0.15 | 0.71 | 1.92 | 0.10 | 12.83 | |||||||||||||
| 1977 | 0.12 | 0.92 | 1.62 | 3.83 | 0.20 | 0.13 | 0.43 | 0.71 | 0.05 | 0.45 | 0.23 | 2.81 | 11.50 | |||||||||||||
| 1978 | 0.18 | 0.86 | 2.19 | 0.26 | 0.82 | 0.61 | 0.40 | 0.98 | 0.25 | 1.99 | 5.15 | 5.46 | 19.15 | |||||||||||||
| 1979 | 7.18 | 7.07 | 2.80 | 2.93 | 0.09 | 0.07 | 0.23 | 0.23 | 0.21 | 0.44 | 0.80 | 4.77 | 26.82 | |||||||||||||
| 1980 | 14.46 | 4.07 | 2.93 | 2.48 | 0.53 | 0.22 | 0.72 | 0.30 | 0.11 | 0.54 | 0.14 | 1.37 | 27.87 | |||||||||||||
| 1981 | 0.46 | 1.94 | 0.73 | 0.89 | 0.84 | 0.06 | 0.06 | 0.67 | 0.85 | 1.48 | 2.26 | 2.61 | 12.85 | |||||||||||||
| 1982 | 8.12 | 3.77 | 5.20 | 3.26 | 0.14 | 0.22 | 0.64 | 1.54 | 0.56 | 2.63 | 1.91 | 6.05 | 34.04 | |||||||||||||
| 1983 | 0.58 | 0.07 | 1.12 | 0.24 | 0.94 | 0.17 | 0.53 | 0.67 | 0.50 | 1.38 | 0.98 | 5.87 | 13.05 | |||||||||||||
| 1984 | 2.45 | 0.67 | 1.42 | 1.07 | 0.47 | 0.02 | 0.09 | 0.46 | 0.11 | 0.00 | 1.16 | 0.64 | 8.56 | |||||||||||||
| 1985 | 1.16 | 2.03 | 1.96 | 0.25 | 1.20 | 0.01 | 0.53 | 0.52 | 0.10 | 5.66 | 4.61 | 1.97 | 20.00 | |||||||||||||
| 1986 | 1.30 | 1.36 | 3.93 | 3.95 | 1.02 | 0.77 | 0.25 | 0.45 | 0.05 | 0.96 | 1.49 | 2.86 | 18.39 | |||||||||||||
| 1987 | 2.91 | 1.41 | 0.57 | 3.77 | 4.36 | 0.12 | 0.13 | 0.62 | 1.43 | 0.25 | 3.02 | 5.72 | 24.31 | |||||||||||||
| 1988 | 7.72 | 0.93 | 0.89 | 1.37 | 0.17 | 0.02 | 0.21 | 0.46 | 0.23 | 0.84 | 3.76 | 10.19 | 26.79 | |||||||||||||
| 1989 | 1.59 | 5.38 | 3.96 | 14.29 | 0.85 | 0.42 | 1.65 | 0.50 | 0.31 | 4.71 | 2.25 | 4.72 | 40.63 | |||||||||||||
| 1990 | 6.32 | 7.94 | 2.98 | 0.06 | 1.50 | 0.90 | 0.39 | 0.50 | 0.50 | 0.60 | 6.44 | 7.07 | 35.20 | |||||||||||||
| 1991 | 2.94 | 4.94 | 2.89 | 0.50 | 0.24 | 0.13 | 0.37 | 1.06 | 1.17 | 0.15 | 0.23 | 1.47 | 16.09 | |||||||||||||
| 1992 | 2.40 | 1.02 | 0.34 | 0.90 | 1.58 | 0.30 | 1.09 | 0.16 | 1.32 | 1.47 | 3.55 | 2.85 | 16.98 | |||||||||||||
| 1993 | 2.19 | 0.21 | 1.55 | 1.28 | 0.52 | 0.09 | 1.30 | 0.80 | 0.78 | 1.19 | 1.99 | 0.79 | 12.69 | |||||||||||||
| 1994 | 1.12 | 1.64 | 4.23 | 0.99 | 0.05 | 0.72 | 1.30 | 0.50 | 1.11 | 0.10 | 1.26 | 0.91 | 13.93 | |||||||||||||
| 1995 | 2.73 | 0.91 | 2.13 | 1.76 | 0.61 | 0.26 | 0.46 | 0.63 | 0.12 | 0.80 | 0.92 | 2.12 | 13.45 | |||||||||||||
| 1996 | 2.47 | 3.02 | 6.75 | 0.50 | 0.46 | 0.18 | 0.52 | 0.18 | 0.18 | 0.00 | 6.53 | 10.21 | 31.00 | |||||||||||||
| 1997 | 9.23 | 1.11 | 3.06 | 1.34 | 0.83 | 0.71 | 1.22 | 0.14 | 0.09 | 0.50 | 3.10 | 1.75 | 23.08 | |||||||||||||
| 1998 | 0.36 | 0.49 | 0.18 | 1.27 | 0.44 | 0.04 | 0.18 | 0.21 | 0.41 | 0.08 | 1.93 | 1.17 | 6.76 | |||||||||||||
| 1999 | 2.01 | 1.70 | 1.48 | 0.34 | 0.51 | 0.09 | 0.01 | 0.31 | 0.03 | 0.41 | 0.22 | 2.55 | 9.66 | |||||||||||||
| 2000 | 1.00 | 0.06 | 0.34 | 1.26 | 0.04 | 0.09 | 0.78 | 1.20 | 0.54 | 0.79 | 3.44 | 0.18 | 9.72 | |||||||||||||
| 2001 | 0.02 | 0.90 | 0.42 | 0.20 | 0.08 | 0.18 | 0.19 | 0.69 | 0.09 | 1.24 | 3.41 | 3.11 | 10.53 | |||||||||||||
| 2002 | 3.75 | 0.99 | 1.80 | 0.64 | 1.83 | 0.01 | 0.66 | 0.00 | 0.00 | 4.42 | 0.42 | 0.55 | 15.07 | |||||||||||||
| 2003 | 2.40 | 5.33 | 1.70 | 0.01 | 0.00 | 0.02 | 0.07 | 0.21 | 0.17 | 0.15 | 1.05 | 2.72 | 13.83 | |||||||||||||
| 2004 | 7.89 | 3.08 | 8.54 | 2.47 | 2.24 | 0.04 | 0.05 | 0.36 | 0.02 | 0.00 | a | 0.00 | a | 1.48 | 26.17 | |||||||||||
| 2005 | 4.91 | 1.99 | 4.24 | 0.30 | 0.21 | 0.05 | 1.23 | 0.62 | 0.00 | p | 0.30 | f | 1.76 | 0.14 | 15.45 | |||||||||||
| 2006 | 0.74 | 0.69 | 5.34 | 0.27 | 0.75 | 0.00 | 0.14 | 0.04 | 0.23 | 4.16 | 3.04 | 3.25 | 18.65 | |||||||||||||
| 2007 | 0.48 | 0.93 | 2.13 | 0.25 | 0.05 | 0.00 | 0.11 | 0.13 | 0.03 | 0.48 | 1.59 | 6.88 | 13.06 | |||||||||||||
| 2008 | 1.42 | 1.03 | 0.01 | 0.66 | 0.04 | 0.01 | 0.47 | 0.40 | 0.19 | 0.13 | 0.65 | 4.54 | 9.55 | |||||||||||||
| 2009 | 4.43 | 0.38 | 2.22 | 1.42 | 0.01 | 0.13 | 0.08 | 0.90 | 0.12 | 0.30 | 1.55 | 2.55 | 14.09 | |||||||||||||
| 2010 | 0.99 | 0.62 | 1.40 | 0.77 | 0.03 | 0.05 | 0.06 | 0.06 | 0.20 | 0.40 | 1.25 | 3.61 | 9.44 | |||||||||||||
| 2011 | 4.31 | 2.85 | 0.71 | 0.06 | 1.31 | 0.28 | 0.63 | 0.19 | 0.08 | 0.10 | 0.07 | 0.00 | o | 10.59 | ||||||||||||
| 2012 | 0.00 | a | 0.07 | a | 2.61 | 0.33 | 0.55 | 0.38 | 0.12 | 0.18 | 0.36 | 0.00 | 0.23 | 0.21 | 5.04 | |||||||||||
| 2013 | 1.98 | 2.96 | 1.16 | b | 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 | 6.10 | |||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 3.49 | 2.39 | 2.50 | 1.33 | 0.66 | 0.22 | 0.45 | 0.45 | 0.33 | 1.00 | 2.18 | 3.09 | 18.17 | |||||||||||||
| S.D. | 3.23 | 2.13 | 2.14 | 1.99 | 0.82 | 0.37 | 0.39 | 0.34 | 0.37 | 1.26 | 2.04 | 2.58 | 8.12 | |||||||||||||
| SKEW | 1.46 | 1.15 | 1.60 | 4.92 | 2.29 | 4.43 | 1.12 | 0.99 | 1.55 | 2.13 | 1.57 | 1.05 | 0.85 | |||||||||||||
| MAX | 14.46 | 8.31 | 10.90 | 14.29 | 4.36 | 2.50 | 1.65 | 1.54 | 1.43 | 5.66 | 9.27 | 10.21 | 40.63 | |||||||||||||
| MIN | 0.00 | 0.06 | 0.01 | 0.01 | 0.00 | 0.00 | 0.01 | 0.00 | 0.00 | 0.00 | 0.00 | 0.01 | 5.04 | |||||||||||||
| NO YRS | 59 | 59 | 59 | 59 | 59 | 59 | 59 | 59 | 58 | 58 | 59 | 58 | 56 | |||||||||||||