| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1955 | 0.41 | u | 0.98 | 2.33 | 2.08 | 0.52 | 0.17 | 0.00 | 0.00 | 1.50 | 2.86 | 4.01 | 5.78 | 20.23 | ||||||||||||
| 1956 | 4.61 | 3.69 | 1.44 | 0.43 | 5.22 | 2.40 | a | 0.50 | 0.00 | 1.12 | 6.71 | 0.62 | 4.75 | 31.49 | ||||||||||||
| 1957 | 1.39 | 2.41 | 6.61 | 1.06 | 1.91 | 0.32 | 0.13 | 0.00 | 0.84 | 3.00 | 3.85 | 4.35 | 25.87 | |||||||||||||
| 1958 | 4.48 | 3.70 | 1.69 | 0.97 | 1.05 | 3.55 | 1.18 | 0.41 | 0.41 | 0.98 | 3.43 | 2.74 | 24.59 | |||||||||||||
| 1959 | 1.37 | 1.70 | 2.11 | 1.04 | 2.76 | 0.33 | 0.00 | 0.73 | 1.24 | a | 0.88 | 0.16 | 1.78 | 14.10 | ||||||||||||
| 1960 | 2.65 | 3.63 | 3.66 | 2.06 | 3.55 | 0.00 | 0.59 | 0.70 | 0.37 | 1.71 | 4.69 | 1.91 | 25.52 | |||||||||||||
| 1961 | 0.81 | 3.91 | 4.47 | 1.56 | 4.22 | 1.21 | 0.09 | 0.58 | 1.78 | 3.27 | 3.64 | 3.81 | 29.35 | |||||||||||||
| 1962 | 2.06 | 1.11 | 3.17 | 1.42 | 3.33 | 0.15 | l | 0.00 | 1.22 | 0.65 | 7.65 | 4.14 | 3.55 | 28.30 | ||||||||||||
| 1963 | 0.66 | 3.28 | 1.57 | 4.65 | 3.08 | 1.73 | 0.20 | 0.38 | 1.44 | 2.78 | 4.74 | 1.53 | 26.04 | |||||||||||||
| 1964 | 6.03 | 0.90 | 3.79 | 1.43 | 1.40 | 2.48 | 0.50 | 0.03 | 0.31 | 0.84 | 4.83 | 16.62 | 39.16 | |||||||||||||
| 1965 | 5.21 | 1.82 | 0.31 | 3.76 | 1.22 | 1.22 | 0.10 | 3.14 | 0.00 | 1.19 | 2.80 | 2.90 | 23.67 | |||||||||||||
| 1966 | 4.30 | 1.71 | 3.20 | 0.83 | 0.40 | 1.49 | 1.28 | 0.17 | 1.65 | 1.15 | 5.38 | 3.62 | 25.18 | |||||||||||||
| 1967 | 4.76 | 1.91 | 3.52 | 4.15 | 2.45 | 0.79 | 0.00 | 0.01 | 0.32 | 2.41 | 1.00 | 2.65 | 23.97 | |||||||||||||
| 1968 | 1.61 | 2.72 | 0.00 | z | 1.13 | 1.34 | 0.27 | 0.00 | 2.53 | 0.47 | 1.54 | 5.26 | 4.11 | 20.98 | ||||||||||||
| 1969 | 7.00 | 2.74 | 1.40 | 3.25 | 1.90 | 3.54 | 0.15 | 0.00 | 0.62 | 4.05 | 1.47 | 6.07 | 32.19 | |||||||||||||
| 1970 | 5.31 | 0.89 | 3.27 | 2.97 | 1.22 | 0.96 | 0.00 | 0.06 | 0.91 | 2.92 | 6.33 | 4.24 | 29.08 | |||||||||||||
| 1971 | 4.18 | 3.65 | 2.05 | j | 0.00 | z | 1.81 | f | 1.85 | 0.11 | 0.64 | 2.34 | 1.44 | 3.93 | 4.29 | 22.43 | ||||||||||
| 1972 | 4.78 | 0.12 | p | 6.20 | 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 | 10.98 | |||
| 1973 | 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 | |
| 1974 | 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 | |
| 1975 | 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 | |
| 1976 | 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 | |
| 1977 | 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 | |
| 1978 | 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 | |
| 1979 | 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 | |
| 1980 | 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 | |
| 1981 | 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 | |
| 1982 | 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 | |
| 1983 | 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 | |
| 1984 | 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 | |
| 1985 | 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 | |
| 1986 | 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 | |
| 1987 | 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 | |
| 1988 | 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 | |
| 1989 | 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 | |
| 1990 | 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 | |
| 1991 | 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 | |
| 1992 | 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 | |
| 1993 | 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 | |
| 1994 | 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 | |
| 1995 | 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 | |
| 1996 | 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 | |
| 1997 | 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 | |
| 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 | 5.41 | 1.75 | a | 1.62 | 1.34 | 0.00 | 0.00 | 1.63 | 0.00 | 1.87 | 2.13 | 2.07 | 17.82 | |||||||||||
| 2000 | 5.53 | 2.34 | 3.02 | 4.40 | 1.13 | 0.62 | 0.89 | 0.00 | 0.40 | 3.05 | 1.91 | b | 0.80 | 24.09 | ||||||||||||
| 2001 | 0.80 | 1.36 | 2.04 | 2.20 | 0.97 | 0.70 | 0.00 | 0.00 | 0.65 | 0.72 | 3.70 | b | 4.44 | 17.58 | ||||||||||||
| 2002 | 2.30 | c | 1.98 | 2.19 | a | 2.76 | 0.70 | 0.10 | 0.10 | 0.00 | 0.39 | 0.23 | 3.59 | 6.92 | 21.26 | |||||||||||
| 2003 | 2.60 | 2.31 | 3.05 | 4.06 | 1.58 | 0.00 | 0.00 | 0.00 | z | 1.18 | a | 0.19 | 2.64 | 5.07 | 22.68 | |||||||||||
| 2004 | 3.09 | 2.88 | 1.85 | 1.44 | 2.89 | 0.23 | 0.00 | 1.37 | 0.41 | 3.76 | 2.30 | 3.93 | a | 24.15 | ||||||||||||
| 2005 | 0.00 | 0.00 | z | 2.76 | 2.46 | 5.13 | 0.25 | b | 0.03 | 0.00 | 1.14 | 1.56 | a | 7.81 | 6.90 | d | 28.04 | |||||||||
| 2006 | 6.00 | 2.10 | 1.91 | e | 2.02 | a | 1.47 | 1.10 | 0.00 | 0.00 | 0.15 | 0.10 | b | 6.08 | c | 3.45 | c | 24.38 | ||||||||
| 2007 | 1.72 | b | 3.14 | c | 1.77 | 1.49 | 0.00 | 0.30 | 1.53 | 0.13 | 0.54 | 2.88 | 3.41 | b | 0.99 | m | 16.91 | |||||||||
| 2008 | 0.00 | z | 0.52 | h | 2.49 | a | 1.82 | b | 1.14 | c | 0.29 | 0.00 | 0.16 | 0.00 | 0.87 | 2.36 | 3.09 | f | 9.13 | |||||||
| 2009 | 3.73 | 0.78 | a | 0.81 | b | 0.90 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 6.22 | |||||||||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 3.35 | 2.43 | 2.68 | 2.15 | 1.92 | 0.96 | 0.26 | 0.51 | 0.74 | 2.16 | 3.44 | 4.16 | 24.63 | |||||||||||||
| S.D. | 1.97 | 1.15 | 1.44 | 1.21 | 1.42 | 1.04 | 0.44 | 0.82 | 0.61 | 1.83 | 1.89 | 3.07 | 6.97 | |||||||||||||
| SKEW | 0.02 | 0.51 | 1.11 | 0.72 | 0.88 | 1.24 | 1.74 | 1.94 | 0.80 | 1.39 | 0.10 | 2.55 | -0.63 | |||||||||||||
| MAX | 7.00 | 5.41 | 6.61 | 4.65 | 5.22 | 3.55 | 1.53 | 3.14 | 2.34 | 7.65 | 7.81 | 16.62 | 39.16 | |||||||||||||
| MIN | 0.00 | 0.78 | 0.31 | 0.43 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 6.22 | |||||||||||||
| NO YRS | 26 | 26 | 27 | 27 | 27 | 27 | 28 | 27 | 28 | 28 | 28 | 26 | 19 | |||||||||||||