| YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
| 1938 | 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 | 4.39 | 11.28 | 9.11 | 24.78 | ||||
| 1939 | 11.17 | 12.23 | 7.30 | 0.40 | 0.95 | 1.71 | 0.32 | 0.91 | 0.18 | 3.72 | 1.05 | 22.02 | 61.96 | |||||||||||||
| 1940 | 9.16 | 21.43 | 10.33 | 4.14 | 3.69 | 0.24 | 0.01 | 0.00 | z | 3.24 | 6.52 | q | 7.49 | 19.45 | 79.18 | |||||||||||
| 1941 | 16.44 | 6.32 | f | 3.89 | 2.79 | 4.62 | 0.00 | z | 0.02 | 0.60 | 5.43 | 3.05 | 12.66 | 23.47 | 72.97 | |||||||||||
| 1942 | 11.50 | 11.51 | 3.53 | 5.47 | 7.33 | 1.26 | 0.13 | 0.00 | 0.58 | 3.63 | 25.91 | e | 35.09 | 105.94 | ||||||||||||
| 1943 | 15.68 | 4.90 | 10.44 | 6.51 | 3.10 | 4.03 | 0.10 | 1.11 | 0.02 | 10.93 | 10.76 | 5.11 | 72.69 | |||||||||||||
| 1944 | 8.90 | 7.78 | 6.35 | 7.78 | 3.04 | 2.21 | 0.05 | 0.50 | 1.22 | 4.19 | 15.42 | 8.00 | 65.44 | |||||||||||||
| 1945 | 9.86 | 0.00 | z | 15.34 | 7.00 | 5.01 | 0.46 | 0.12 | 0.32 | 2.26 | 4.09 | 25.54 | 26.51 | 96.51 | ||||||||||||
| 1946 | 16.62 | 11.79 | 11.22 | 3.80 | 0.90 | 1.03 | 0.26 | 0.70 | 1.62 | 7.65 | l | 18.27 | 6.11 | 72.32 | ||||||||||||
| 1947 | 9.17 | 4.06 | 13.64 | 3.38 | 0.27 | 6.59 | 5.05 | 0.44 | 1.48 | 16.51 | 5.34 | 7.05 | 72.98 | |||||||||||||
| 1948 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.94 | 0.64 | 2.46 | 2.95 | 10.81 | a | 18.35 | a | 36.15 | |||||
| 1949 | 2.98 | 18.48 | 8.90 | 1.25 | 7.42 | 0.08 | 0.00 | 0.05 | 1.42 | 5.03 | 10.46 | 12.16 | 68.23 | |||||||||||||
| 1950 | 28.50 | 11.52 | 16.15 | 3.61 | 2.66 | 1.35 | 0.00 | 0.09 | 1.22 | 25.31 | 14.48 | 16.10 | 120.99 | |||||||||||||
| 1951 | 24.60 | 10.18 | i | 9.27 | 2.31 | 3.07 | 0.00 | 0.00 | a | 0.67 | 2.31 | 12.90 | 17.62 | 19.28 | 92.03 | |||||||||||
| 1952 | 19.24 | 11.76 | 8.29 | a | 2.11 | 1.00 | 2.31 | 0.00 | 0.00 | 0.73 | 0.62 | 3.91 | 22.86 | 72.83 | ||||||||||||
| 1953 | 34.79 | 12.46 | 11.92 | 6.06 | 8.27 | 2.12 | 0.00 | 3.89 | 1.11 | 0.00 | u | 26.86 | 13.40 | 120.88 | ||||||||||||
| 1954 | 23.69 | b | 8.08 | 8.99 | b | 4.30 | a | 0.56 | 3.52 | 0.10 | 0.00 | s | 0.24 | n | 3.94 | 9.44 | 16.32 | 78.94 | ||||||||
| 1955 | 11.72 | 6.62 | S | 9.93 | a | 10.57 | 0.99 | 0.33 | 0.26 | 0.02 | a | 2.59 | i | 0.00 | z | 0.00 | z | 0.00 | z | 40.44 | ||||||
| 1956 | 0.00 | z | 17.31 | p | 7.83 | 0.94 | 1.89 | 0.59 | 0.00 | 0.35 | 1.23 | 15.99 | 3.25 | 9.71 | 41.78 | |||||||||||
| 1957 | 8.93 | 11.73 | a | 16.31 | 3.29 | 4.83 | 0.55 | 0.32 | 0.37 | 2.58 | 6.35 | 10.55 | 25.16 | 90.97 | ||||||||||||
| 1958 | 1.50 | x | 0.00 | z | 0.00 | z | 4.66 | b | 1.17 | 0.87 | 0.97 | 0.00 | 2.01 | 3.87 | 12.04 | 7.68 | 33.27 | |||||||||
| 1959 | 20.55 | 15.42 | 9.21 | 0.95 | 2.09 | 0.54 | 0.17 | 0.00 | 3.61 | 4.16 | 3.06 | 7.76 | 67.52 | |||||||||||||
| 1960 | 9.35 | 16.19 | 15.31 | 6.56 | 9.12 | 0.00 | 0.00 | 0.41 | 0.15 | 4.39 | 22.28 | 6.22 | 89.98 | |||||||||||||
| 1961 | 8.50 | 16.49 | 21.47 | 4.82 | 5.79 | 0.37 | 0.00 | 0.27 | 0.85 | 9.29 | 20.22 | 12.68 | 100.75 | |||||||||||||
| 1962 | 3.00 | 14.62 | 12.40 | 4.37 | 2.05 | 0.35 | 0.00 | 1.20 | 1.73 | 15.51 | 11.48 | 6.34 | 73.05 | |||||||||||||
| 1963 | 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 | |
| 1964 | 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 | |
| 1965 | 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 | |
| 1966 | 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 | |
| 1967 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | h | 0.00 | 0.00 | 1.15 | 9.80 | 6.35 | 12.86 | 30.16 | |||||||
| 1968 | 18.29 | 13.81 | 8.60 | 1.45 | 3.38 | 0.51 | 0.05 | 4.43 | 2.22 | 9.66 | 17.52 | 22.86 | 102.78 | |||||||||||||
| 1969 | 22.45 | 9.82 | 4.19 | 5.06 | 0.79 | s | 0.82 | 0.02 | 0.00 | 2.41 | 6.66 | 5.03 | 19.51 | 75.97 | ||||||||||||
| 1970 | 29.90 | 5.67 | 4.63 | 4.99 | 2.43 | 0.54 | 0.00 | 0.00 | 0.28 | 6.64 | 19.86 | 20.15 | 95.09 | |||||||||||||
| 1971 | 18.58 | 7.78 | 16.11 | 7.83 | 2.44 | 2.47 | 0.14 | 0.84 | 5.53 | 3.17 | 16.26 | 19.03 | 100.18 | |||||||||||||
| 1972 | 22.46 | 11.60 | 15.88 | 8.51 | 1.14 | 0.65 | 0.05 | 0.89 | 1.35 | 2.28 | 8.52 | 16.76 | 90.09 | |||||||||||||
| 1973 | 13.03 | 5.84 | 9.04 | 2.09 | 0.97 | 0.66 | 0.03 | 0.10 | 5.41 | 4.58 | 33.75 | 22.10 | 97.60 | |||||||||||||
| 1974 | 15.09 | 14.28 | 18.27 | 4.92 | 1.76 | 0.66 | 0.39 | 0.00 | 0.00 | 1.76 | 8.39 | 14.73 | 80.25 | |||||||||||||
| 1975 | 9.94 | 18.51 | 17.05 | 5.21 | 2.55 | 0.30 | 0.08 | 1.51 | 0.03 | 12.10 | 13.13 | 11.01 | 91.42 | |||||||||||||
| 1976 | 12.88 | 11.23 | 8.22 | 3.26 | 1.15 | 0.52 | 0.27 | 2.97 | 0.58 | 2.77 | 2.33 | 1.50 | 47.68 | |||||||||||||
| 1977 | 3.02 | 7.25 | 9.47 | 1.40 | 4.68 | 0.27 | 0.00 | 1.55 | 6.99 | 4.59 | 19.56 | 22.37 | 81.15 | |||||||||||||
| 1978 | 14.88 | 13.35 | 3.58 | 10.70 | 4.35 | 0.66 | 0.27 | 2.30 | 7.05 | 0.21 | 6.04 | 5.91 | 69.30 | |||||||||||||
| 1979 | 9.59 | 16.46 | 3.76 | 7.43 | 6.01 | 0.78 | 0.53 | 0.57 | 2.48 | 8.41 | 11.59 | 13.65 | 81.26 | |||||||||||||
| 1980 | 11.33 | 8.77 | 10.57 | 7.29 | 2.69 | 1.77 | 0.00 | 0.04 | 0.45 | 7.09 | 13.33 | 18.75 | 82.08 | |||||||||||||
| 1981 | 5.35 | 9.65 | 8.27 | 3.70 | 2.69 | 2.39 | 0.04 | 0.02 | 4.38 | 10.42 | 15.10 | 34.19 | 96.20 | |||||||||||||
| 1982 | 15.46 | 14.10 | 11.58 | 14.60 | 0.07 | 1.54 | a | 0.03 | 0.00 | 3.29 | 11.03 | 11.20 | 19.60 | 102.50 | ||||||||||||
| 1983 | 13.54 | 22.92 | 19.02 | 5.27 | a | 3.04 | 1.35 | 3.08 | 3.62 | 0.09 | 2.33 | 21.95 | 16.66 | 112.87 | ||||||||||||
| 1984 | 2.65 | 14.85 | 0.00 | z | 7.09 | 4.10 | 2.93 | 0.07 | 0.00 | 0.64 | 8.46 | 28.02 | 6.73 | 75.54 | ||||||||||||
| 1985 | 0.43 | 7.50 | 8.41 | 1.90 | 1.06 | 5.98 | 0.20 | 0.00 | 2.57 | 5.95 | 5.45 | 7.72 | 47.17 | |||||||||||||
| 1986 | 14.47 | 27.75 | 9.50 | 4.59 | 5.52 | 0.77 | 0.41 | 0.00 | 11.34 | 4.27 | 12.92 | 7.44 | 98.98 | |||||||||||||
| 1987 | 13.59 | 10.04 | 11.52 | 3.14 | 1.52 | 0.06 | 0.11 | 0.00 | 0.00 | 0.18 | 8.68 | 12.79 | i | 48.84 | ||||||||||||
| 1988 | 17.59 | 2.65 | 7.51 | 4.74 | 4.60 | 2.16 | 0.00 | 0.00 | 0.82 | 0.46 | 24.69 | 8.97 | a | 74.19 | ||||||||||||
| 1989 | 11.43 | a | 5.85 | b | 18.49 | 4.89 | 3.55 | 0.94 | 0.25 | 0.63 | 0.89 | 7.47 | 6.80 | 1.81 | 63.00 | |||||||||||
| 1990 | 18.46 | 11.22 | a | 5.40 | 0.99 | 6.94 | 1.13 | 0.25 | 2.62 | 0.16 | 6.94 | 0.00 | z | 0.00 | z | 54.11 | ||||||||||
| 1991 | 0.00 | z | 1.76 | 13.56 | b | 2.78 | c | 3.73 | a | 0.35 | 0.60 | 0.90 | 0.00 | 1.80 | 10.55 | l | 0.00 | z | 25.48 | |||||||
| 1992 | 5.74 | j | 8.88 | f | 5.80 | c | 4.95 | 0.00 | 0.62 | 1.00 | 0.00 | 0.90 | a | 4.75 | 3.70 | 14.30 | c | 36.02 | ||||||||
| 1993 | 0.00 | z | 0.00 | z | 0.00 | z | 12.95 | z | 7.30 | z | 1.00 | z | 1.00 | b | 2.10 | 0.00 | 1.30 | z | 2.35 | a | 15.20 | 20.65 | ||||
| 1994 | 6.25 | 9.65 | 8.30 | e | 2.15 | t | 1.00 | a | 3.10 | z | 0.00 | 0.00 | 0.75 | a | 0.00 | z | 0.00 | z | 0.00 | z | 25.95 | |||||
| 1995 | 24.10 | 3.85 | 14.25 | j | 5.60 | 0.00 | z | 1.70 | 0.00 | 0.80 | 1.78 | 2.72 | 10.86 | 18.20 | 69.61 | |||||||||||
| 1996 | 33.14 | 10.40 | b | 8.35 | 10.75 | 6.60 | 1.45 | 0.00 | a | 0.00 | 2.00 | 6.25 | 17.90 | 29.77 | 126.61 | |||||||||||
| 1997 | 15.70 | 6.25 | 8.09 | 5.83 | 2.75 | 1.35 | 0.00 | a | 2.40 | d | 6.66 | 11.37 | a | 9.58 | 6.64 | a | 76.62 | |||||||||
| 1998 | 23.85 | 21.45 | 7.03 | 4.46 | c | 6.23 | c | 0.00 | 0.00 | 0.00 | 0.44 | 1.76 | a | 24.51 | 11.43 | a | 101.16 | |||||||||
| 1999 | 13.50 | 25.28 | a | 10.41 | f | 2.43 | 2.31 | 0.00 | 0.00 | 0.66 | 0.00 | 7.13 | 10.81 | 5.74 | 67.86 | |||||||||||
| 2000 | 24.95 | c | 13.91 | 2.71 | 3.89 | 6.17 | 1.27 | 0.00 | 0.00 | 1.94 | 8.47 | 6.82 | 6.76 | 76.89 | ||||||||||||
| 2001 | 4.79 | 4.48 | 5.33 | 5.33 | 2.60 | 3.29 | 0.39 | 0.68 | 0.46 | 4.67 | 16.81 | 20.30 | 69.13 | |||||||||||||
| 2002 | 9.12 | g | 6.07 | 5.54 | 7.14 | 1.21 | 1.15 | 0.00 | 0.00 | 0.38 | 0.00 | 8.55 | b | 22.27 | 52.31 | |||||||||||
| 2003 | 13.84 | 5.31 | 11.45 | 10.62 | m | 0.29 | c | 0.26 | 0.00 | 0.00 | z | 0.77 | 0.00 | z | 8.10 | 19.02 | a | 59.04 | ||||||||
| 2004 | 13.11 | b | 11.10 | f | 3.35 | c | 5.46 | 0.98 | 0.78 | 0.00 | 1.26 | 2.16 | b | 6.93 | 2.02 | 12.93 | d | 48.98 | ||||||||
| 2005 | 10.05 | 2.74 | 11.54 | 8.47 | 5.44 | 2.92 | 0.16 | b | 0.00 | 1.10 | 4.62 | 0.00 | z | 15.42 | g | 47.04 | ||||||||||
| 2006 | 17.95 | i | 7.73 | 16.38 | e | 0.00 | z | 0.00 | z | 0.34 | 0.00 | z | 0.10 | 0.39 | 1.70 | 21.00 | 17.78 | e | 65.42 | |||||||
| 2007 | 1.99 | c | 15.55 | e | 4.27 | 4.42 | 0.00 | z | 0.72 | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 0.00 | z | 26.95 | ||||
| Period of Record Statistics | ||||||||||||||||||||||||||
| MEAN | 14.36 | 11.32 | 9.98 | 4.91 | 3.20 | 1.28 | 0.29 | 0.71 | 1.89 | 6.21 | 12.83 | 14.93 | 84.53 | |||||||||||||
| S.D. | 7.84 | 5.80 | 4.58 | 2.76 | 2.26 | 1.33 | 0.76 | 1.04 | 2.16 | 4.73 | 7.53 | 7.64 | 18.64 | |||||||||||||
| SKEW | 0.54 | 0.70 | 0.50 | 0.94 | 0.68 | 2.06 | 4.89 | 1.92 | 2.09 | 1.52 | 0.61 | 0.45 | 0.15 | |||||||||||||
| MAX | 34.79 | 27.75 | 21.47 | 14.60 | 9.12 | 6.59 | 5.05 | 4.43 | 11.34 | 25.31 | 33.75 | 35.09 | 126.61 | |||||||||||||
| MIN | 0.43 | 1.76 | 2.71 | 0.40 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 0.00 | 1.05 | 1.50 | 47.17 | |||||||||||||
| NO YRS | 56 | 55 | 58 | 59 | 58 | 60 | 63 | 61 | 62 | 58 | 60 | 59 | 37 | |||||||||||||