YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
1926 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1927 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1928 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1929 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1930 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1931 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1932 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1933 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1934 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1935 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1936 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1937 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1938 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1939 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1940 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1941 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1942 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1943 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1944 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1945 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1946 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1947 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1948 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1949 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1950 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1951 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1952 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1953 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1954 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1955 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1956 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1957 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 51.12 | b | 41.72 | a | 25.07 | 12.74 | 32.66 | h | ||
1958 | 13.03 | 7.62 | 25.50 | b | 39.28 | 49.70 | a | 53.32 | 62.18 | 62.00 | d | 53.73 | b | 42.87 | 26.29 | a | 2.00 | 36.46 | ||||||||
1959 | -1.50 | 7.16 | 23.37 | 35.30 | 51.05 | 60.88 | 65.18 | 64.15 | a | 52.54 | b | 37.21 | 15.53 | 21.11 | 36.00 | |||||||||||
1960 | 8.08 | 11.55 | 15.05 | 36.12 | 50.50 | 57.22 | a | 63.18 | 64.16 | c | 53.47 | a | 42.13 | 27.50 | 7.92 | 36.41 | ||||||||||
1961 | 4.05 | 17.94 | a | 28.79 | s | 34.59 | b | 49.13 | 61.10 | 64.73 | c | 65.68 | 53.33 | 43.37 | 25.89 | c | 11.40 | 39.20 | a | |||||||
1962 | 0.66 | 5.98 | 24.39 | 34.03 | 51.50 | 58.38 | 60.65 | 61.68 | c | 49.71 | k | 45.87 | h | 31.57 | p | ----- | z | 37.16 | d | |||||||
1963 | -2.83 | k | 5.50 | i | 23.94 | m | 39.06 | d | 48.44 | 61.35 | c | 67.22 | m | 61.31 | d | 56.76 | i | 54.52 | 34.37 | k | 4.47 | o | 52.94 | g | ||
1964 | 15.70 | i | 14.58 | k | 16.24 | h | 38.11 | c | 54.47 | a | 58.93 | 65.95 | 58.10 | 51.84 | b | 42.34 | 33.11 | k | 7.75 | c | 47.19 | d | ||||
1965 | 3.70 | a | 3.29 | d | 16.95 | 36.09 | b | 52.58 | 57.07 | 60.28 | h | 59.54 | f | ----- | z | ----- | z | 23.59 | n | 18.68 | t | 28.28 | f | |||
1966 | -2.72 | h | 9.73 | 27.06 | 32.77 | b | 44.36 | b | 60.41 | a | 68.03 | a | 60.38 | b | 54.67 | a | 42.11 | d | 22.81 | a | 10.80 | d | 39.38 | a | ||
1967 | 7.86 | b | 2.04 | n | 22.76 | f | 35.10 | a | 43.11 | 59.64 | a | 63.06 | 60.66 | 55.33 | 39.50 | 23.79 | b | 15.32 | 40.34 | b | ||||||
1968 | 7.15 | a | 9.12 | 30.37 | a | 38.85 | 48.42 | 58.10 | 63.97 | a | 61.95 | c | 54.15 | 44.74 | b | 27.81 | d | 11.62 | b | 38.02 | ||||||
1969 | 6.98 | a | 15.28 | a | 20.31 | 40.70 | 49.98 | a | 52.50 | a | 63.42 | 66.56 | 53.97 | 37.39 | 24.83 | a | 16.79 | 37.39 | ||||||||
1970 | 2.65 | 9.20 | 18.63 | 34.27 | 44.90 | 60.97 | 68.18 | 64.26 | 53.72 | a | 42.85 | a | 25.59 | b | 12.22 | a | 36.45 | |||||||||
1971 | -2.26 | d | 12.74 | c | 19.84 | 36.50 | 47.45 | 61.08 | 60.52 | b | 56.81 | w | 54.23 | 45.48 | 24.61 | c | 11.25 | k | 36.02 | b | ||||||
1972 | -6.02 | j | 5.48 | h | 18.95 | c | 35.42 | e | 54.83 | d | ----- | z | 61.60 | b | 61.44 | 50.68 | 39.48 | 23.62 | n | 3.63 | e | 40.76 | d | |||
1973 | 12.47 | a | 12.21 | b | 31.96 | d | 37.00 | 47.58 | 58.82 | 64.50 | 64.32 | ----- | z | ----- | z | ----- | z | ----- | z | 41.11 | d | |||||
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 58.45 | a | 66.94 | 62.24 | 50.58 | 44.11 | 33.35 | m | 12.08 | s | 56.46 | g | ||||
1976 | -0.04 | q | 19.72 | m | 16.25 | w | 40.39 | k | 50.26 | 63.15 | 65.20 | a | 64.39 | c | ----- | z | 34.90 | e | ----- | z | ----- | z | 55.58 | g | ||
1977 | ----- | z | ----- | z | 23.80 | u | 45.69 | d | 58.39 | 59.52 | 65.50 | c | 55.87 | d | 50.88 | e | 42.94 | d | 35.36 | p | 15.13 | p | 54.11 | e | ||
1978 | 5.58 | r | 6.44 | j | 21.25 | s | ----- | z | 53.81 | b | 59.41 | c | 61.97 | 62.27 | 55.31 | c | 44.82 | 27.77 | q | ----- | z | 56.27 | f | |||
1979 | ----- | z | ----- | z | ----- | z | 39.83 | x | ----- | z | 57.54 | b | 66.48 | 60.23 | c | 55.12 | b | 39.00 | j | 26.11 | p | 21.00 | s | 59.84 | h | |
1980 | 3.09 | t | 8.92 | p | 19.73 | r | 40.97 | l | 56.59 | d | 59.43 | 66.23 | 62.30 | a | 52.00 | o | 35.30 | u | 30.50 | t | 11.50 | s | 61.14 | h | ||
1981 | 8.73 | t | 10.18 | n | 22.10 | u | 40.08 | r | 50.56 | n | 60.27 | h | 65.20 | a | 65.40 | e | ----- | z | 40.13 | p | ----- | z | 10.47 | p | 65.30 | j |
1982 | -4.58 | r | 9.75 | r | ----- | z | ----- | z | 53.00 | j | 55.34 | n | 65.47 | o | ----- | z | 59.06 | n | ----- | z | 24.54 | q | 14.50 | p | ----- | z |
1983 | 10.16 | o | 15.25 | l | 23.34 | o | 36.79 | p | 46.39 | l | 59.28 | e | 69.05 | j | 68.16 | f | 54.40 | d | 41.84 | l | 27.35 | q | -0.56 | n | 56.84 | j |
1984 | 1.25 | k | 22.29 | l | 17.50 | l | 41.24 | i | 49.32 | f | 60.18 | b | 66.18 | a | 65.02 | 48.55 | a | 41.50 | p | 22.74 | m | 11.88 | r | 59.98 | h | |
1985 | 2.29 | n | 8.36 | n | 29.50 | q | 39.72 | l | 50.98 | h | 53.48 | b | 61.66 | c | 58.40 | b | 50.38 | a | 40.15 | k | 20.00 | n | -1.34 | o | 55.98 | h |
1986 | 7.15 | n | 11.71 | p | 22.44 | o | 41.00 | j | 52.02 | i | 57.64 | e | 62.71 | e | 57.50 | d | 50.52 | g | 43.27 | p | 17.95 | t | 17.88 | o | 59.28 | i |
1987 | 19.95 | u | 22.18 | q | 30.89 | q | 43.66 | h | 52.98 | e | 62.96 | e | 64.69 | d | 61.19 | e | 55.25 | l | 38.96 | q | 30.64 | s | 17.61 | q | 60.45 | h |
1988 | -1.89 | m | 3.38 | i | 22.57 | j | 38.10 | j | 54.52 | e | 63.24 | e | 66.53 | b | 64.92 | g | 53.02 | j | 34.28 | v | 23.65 | m | 8.83 | m | 61.43 | i |
1989 | 10.72 | m | -1.47 | j | 16.23 | k | 33.76 | k | 50.05 | i | 56.08 | d | 65.46 | d | 63.05 | l | 53.05 | i | 40.40 | p | 23.32 | p | -3.04 | q | 60.77 | j |
1990 | 16.04 | s | 15.09 | q | 22.62 | s | 41.26 | m | 40.78 | f | 54.80 | j | 58.52 | f | 57.80 | c | 51.07 | c | 35.31 | m | 28.07 | p | 7.39 | q | 54.44 | j |
1991 | 0.29 | q | 12.25 | p | 19.69 | o | 33.82 | k | 50.55 | j | 57.07 | h | 59.56 | f | 58.64 | f | 47.66 | e | 35.13 | p | 19.79 | r | 4.75 | m | 47.66 | k |
1992 | 7.74 | j | 12.18 | j | 17.19 | j | 28.25 | j | 54.48 | c | 56.18 | e | 57.63 | a | 58.69 | 52.70 | c | 40.60 | j | 24.31 | l | 13.97 | k | 55.94 | g | |
1993 | 8.69 | m | 13.05 | i | 26.09 | h | 34.40 | j | 48.59 | d | 54.88 | a | 60.55 | b | 61.02 | c | 47.29 | b | 38.00 | k | 23.42 | k | 23.29 | q | 54.47 | g |
1994 | ----- | z | 2.00 | v | 24.98 | h | 37.17 | j | 51.46 | e | 62.09 | a | 63.05 | a | 60.85 | a | 56.48 | 45.26 | n | 29.11 | k | 19.81 | j | 58.79 | g | |
1995 | 9.79 | l | 9.08 | i | 23.80 | h | 32.05 | k | 49.43 | b | 67.13 | 65.06 | 65.78 | b | 51.96 | b | 42.31 | j | 15.52 | i | 6.71 | q | 59.87 | g | ||
1996 | 1.36 | q | 8.31 | m | 17.29 | l | 33.07 | h | 47.77 | e | 61.80 | 61.53 | a | 64.86 | b | 56.94 | e | 39.75 | k | 17.80 | o | 9.57 | q | 58.58 | g | |
1997 | 2.27 | t | 15.17 | p | 20.77 | r | 34.46 | p | 44.83 | d | 63.98 | a | 64.58 | 60.61 | 56.29 | a | 39.95 | j | 22.03 | l | 22.20 | i | 58.06 | g | ||
1998 | 11.14 | q | 27.63 | m | 22.46 | h | 41.63 | d | 56.07 | a | 56.59 | a | 63.32 | 65.37 | 57.98 | 42.75 | g | 28.69 | l | 12.29 | q | 56.83 | f | |||
1999 | 2.12 | r | 18.36 | n | 27.56 | m | 40.36 | h | 52.79 | b | 58.20 | b | 65.77 | a | 60.55 | 52.17 | 36.47 | l | 33.56 | e | 17.74 | h | 53.84 | f | ||
2000 | 5.21 | n | 19.05 | i | 32.15 | g | 35.92 | e | 51.00 | d | 52.76 | a | 62.73 | 62.58 | 51.68 | b | 45.96 | f | 27.37 | d | 0.30 | k | 49.15 | e | ||
2001 | 16.13 | l | 6.00 | m | 23.91 | o | 38.02 | e | 52.22 | a | 60.63 | 64.44 | 65.53 | b | 53.68 | 41.18 | f | 37.10 | j | 23.06 | n | 55.75 | f | |||
2002 | 12.97 | k | 17.18 | i | 17.26 | l | 35.09 | g | 44.43 | a | 60.72 | 68.71 | b | 62.35 | 56.65 | 34.13 | e | 21.39 | g | 16.67 | j | 54.50 | f | |||
2003 | 3.39 | l | 3.50 | j | 20.18 | i | 35.98 | i | 50.31 | b | 57.82 | b | 64.32 | 65.85 | a | 54.98 | 40.26 | b | 23.62 | e | 18.08 | f | 51.02 | e | ||
2004 | -1.04 | f | 13.14 | 25.18 | 35.30 | 44.11 | 54.63 | 61.65 | 56.07 | a | 57.29 | a | 42.70 | a | 29.43 | i | ----- | z | 43.34 | c | ||||||
2005 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.45 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | 64.45 | k | |
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | 5.24 | 10.38 | 22.89 | 37.13 | 50.34 | 58.96 | 64.09 | 62.04 | 53.22 | 41.89 | 25.30 | 11.11 | 36.79 | |||||||||||||
S.D. | 4.93 | 3.98 | 5.14 | 3.00 | 3.85 | 3.19 | 2.33 | 2.84 | 2.65 | 4.27 | 3.85 | 5.35 | 0.76 | |||||||||||||
SKEW | 0.05 | 0.13 | 0.25 | 1.15 | -0.05 | -0.06 | -0.33 | -0.36 | -0.35 | 0.72 | -0.50 | 0.01 | 0.74 | |||||||||||||
MAX | 13.03 | 17.94 | 31.96 | 45.69 | 58.39 | 67.13 | 68.71 | 66.56 | 57.98 | 54.52 | 33.56 | 21.11 | 38.02 | |||||||||||||
MIN | -2.26 | 3.29 | 15.05 | 32.77 | 43.11 | 52.50 | 57.63 | 55.87 | 47.29 | 34.13 | 15.53 | 2.00 | 36.00 | |||||||||||||
YRS | 12 | 13 | 13 | 21 | 35 | 41 | 41 | 39 | 35 | 21 | 14 | 12 | 6 |