YEAR(S) | JAN | FEB | MAR | APR | MAY | JUN | JUL | AUG | SEP | OCT | NOV | DEC | ANN | |||||||||||||
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 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1958 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1959 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1960 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1961 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1962 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1963 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1964 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1965 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1966 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1967 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1968 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1969 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1970 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1971 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1972 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1973 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1974 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1975 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1976 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1977 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1978 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1979 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1980 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1981 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1982 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1983 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1984 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1985 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1986 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1987 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1988 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1989 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1990 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1991 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1992 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1993 | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z |
1994 | ----- | z | ----- | z | 6.00 | c | 22.00 | 33.00 | 52.00 | 48.00 | 56.00 | a | 34.00 | d | 28.00 | 8.00 | a | 8.00 | ----- | z | ||||||
1995 | -2.00 | a | 3.00 | a | 5.00 | 15.00 | b | 34.00 | 46.00 | 49.00 | 55.00 | 32.00 | b | 20.00 | d | 10.00 | d | 2.00 | c | -2.00 | q | |||||
1996 | -5.00 | d | -24.00 | d | -4.00 | 27.00 | a | 29.00 | c | 49.00 | 56.00 | 53.00 | b | 32.00 | b | 17.00 | d | 12.00 | e | -11.00 | i | ----- | z | |||
1997 | -7.00 | i | 6.00 | h | 9.00 | c | 9.00 | a | 31.00 | a | 49.00 | a | 50.00 | 55.00 | a | 42.00 | c | 6.00 | b | 6.00 | d | 2.00 | b | ----- | z | |
1998 | 9.00 | c | 17.00 | 8.00 | b | 24.00 | a | 34.00 | b | 40.00 | 56.00 | a | 51.00 | 47.00 | 27.00 | b | 18.00 | -16.00 | c | -16.00 | n | |||||
1999 | 7.00 | 7.00 | a | 18.00 | 23.00 | c | 33.00 | 45.00 | 54.00 | 56.00 | 27.00 | a | 24.00 | b | 15.00 | 8.00 | 7.00 | g | ||||||||
2000 | 2.00 | 10.00 | a | 19.00 | a | 22.00 | 35.00 | 47.00 | 56.00 | 55.00 | a | 29.00 | a | 28.00 | 8.00 | -1.00 | -1.00 | d | ||||||||
2001 | -7.00 | -5.00 | 16.00 | 27.00 | 33.00 | 42.00 | 59.00 | a | 49.00 | 35.00 | 24.00 | 7.00 | -5.00 | -7.00 | a | |||||||||||
2002 | -2.00 | -5.00 | 2.00 | 24.00 | 30.00 | a | 50.00 | a | 57.00 | 50.00 | a | 40.00 | a | 22.00 | a | 6.00 | a | -4.00 | -5.00 | f | ||||||
2003 | 10.00 | -4.00 | a | 14.00 | a | 23.00 | 32.00 | 44.00 | 57.00 | 55.00 | 36.00 | 22.00 | a | -2.00 | 2.00 | a | -4.00 | d | ||||||||
2004 | -8.00 | -7.00 | 22.00 | 24.00 | 34.00 | 44.00 | 50.00 | 48.00 | 36.00 | 21.00 | 2.00 | -15.00 | -15.00 | |||||||||||||
2005 | -7.00 | 13.00 | a | 14.00 | 20.00 | 31.00 | 42.00 | 51.00 | 53.00 | 42.00 | 24.00 | a | 8.00 | c | -18.00 | -18.00 | e | |||||||||
2006 | -4.00 | -3.00 | 4.00 | 19.00 | 34.00 | 49.00 | 59.00 | a | 50.00 | 35.00 | 22.00 | b | 4.00 | -0.00 | -4.00 | c | ||||||||||
2007 | -14.00 | -10.00 | 13.00 | 23.00 | 39.00 | 36.00 | 54.00 | 56.00 | 37.00 | a | 27.00 | a | 8.00 | a | -4.00 | -14.00 | c | |||||||||
2008 | -8.00 | -11.00 | 14.00 | a | 23.00 | 22.00 | 44.00 | 49.00 | 51.00 | 41.00 | 22.00 | 14.00 | -1.00 | a | -11.00 | b | ||||||||||
2009 | 2.00 | 9.00 | -2.00 | 19.00 | 37.00 | 41.00 | 52.00 | 51.00 | a | 37.00 | 15.00 | 13.00 | -16.00 | a | -16.00 | b | ||||||||||
2010 | -5.00 | 6.00 | 17.00 | 20.00 | 28.00 | 48.00 | a | 56.00 | b | 51.00 | e | 44.00 | a | 18.00 | a | 4.00 | a | 4.00 | -5.00 | k | ||||||
2011 | -18.00 | -17.00 | 15.00 | 22.00 | 26.00 | 47.00 | 57.00 | 60.00 | 40.00 | 23.00 | 13.00 | -14.00 | -18.00 | |||||||||||||
2012 | 2.00 | 12.00 | a | 13.00 | 32.00 | 38.00 | 49.00 | 58.00 | 51.00 | 40.00 | 20.00 | 6.00 | -6.00 | -6.00 | a | |||||||||||
2013 | -1.00 | a | 6.00 | 5.00 | a | 12.00 | 25.00 | 44.00 | 53.00 | a | 55.00 | a | 37.00 | a | 24.00 | a | 12.00 | -6.00 | -6.00 | f | ||||||
2014 | -13.00 | a | -9.00 | -4.00 | 20.00 | 30.00 | 42.00 | 55.00 | a | 51.00 | 37.00 | 29.00 | -14.00 | -9.00 | -14.00 | b | ||||||||||
2015 | -8.00 | b | 3.00 | 4.00 | 26.00 | a | 32.00 | 52.00 | a | 55.00 | 50.00 | 43.00 | 29.00 | 13.00 | 5.00 | -8.00 | d | |||||||||
2016 | 2.00 | -5.00 | 11.00 | 20.00 | 30.00 | 51.00 | 53.00 | 50.00 | 36.00 | 27.00 | 13.00 | -22.00 | -22.00 | |||||||||||||
2017 | -19.00 | 8.00 | 11.00 | c | 30.00 | 35.00 | 50.00 | 53.00 | c | 48.00 | 41.00 | 24.00 | 16.00 | 1.00 | -19.00 | f | ||||||||||
2018 | -3.00 | b | -2.00 | 14.00 | 18.00 | a | 37.00 | b | 49.00 | 55.00 | 53.00 | 36.00 | 24.00 | 12.00 | 4.00 | b | -3.00 | g | ||||||||
2019 | -9.00 | 2.00 | 3.00 | 19.00 | 25.00 | 41.00 | 44.00 | a | 52.00 | c | 38.00 | -4.00 | -2.00 | 5.00 | -9.00 | d | ||||||||||
2020 | 2.00 | 3.00 | f | 15.00 | e | 15.00 | 31.00 | 43.00 | 53.00 | c | 48.00 | 31.00 | a | -2.00 | 9.00 | -7.00 | a | -7.00 | p | |||||||
2021 | -7.00 | -25.00 | 5.00 | a | 17.00 | a | 32.00 | 45.00 | 54.00 | 52.00 | 32.00 | 23.00 | 8.00 | 4.00 | -25.00 | b | ||||||||||
2022 | -15.00 | -4.00 | a | -0.00 | a | 16.00 | 31.00 | 45.00 | 56.00 | k | 47.00 | n | 42.00 | 21.00 | -0.00 | -17.00 | ----- | z | ||||||||
2023 | -7.00 | -7.00 | 7.00 | 14.00 | 37.00 | 46.00 | 51.00 | 52.00 | 41.00 | 9.00 | 8.00 | 5.00 | -7.00 | |||||||||||||
2024 | -14.00 | 1.00 | 15.00 | 24.00 | r | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | ----- | z | |||
Period of Record Statistics | ||||||||||||||||||||||||||
MEAN | -4.83 | -1.46 | 9.32 | 20.83 | 31.93 | 45.73 | 53.59 | 52.31 | 37.33 | 20.47 | 7.83 | -3.83 | -11.31 | |||||||||||||
S.D. | 7.55 | 10.44 | 6.94 | 5.11 | 4.03 | 3.89 | 3.54 | 2.90 | 4.66 | 8.26 | 6.51 | 8.72 | 6.79 | |||||||||||||
SKEW | 0.07 | -0.46 | -0.29 | -0.10 | -0.48 | -0.32 | -0.65 | 0.54 | -0.20 | -1.71 | -1.29 | -0.53 | -0.45 | |||||||||||||
MAX | 10.00 | 17.00 | 22.00 | 32.00 | 39.00 | 52.00 | 59.00 | 60.00 | 47.00 | 29.00 | 18.00 | 8.00 | -1.00 | |||||||||||||
MIN | -19.00 | -25.00 | -4.00 | 9.00 | 22.00 | 36.00 | 44.00 | 48.00 | 27.00 | -4.00 | -14.00 | -22.00 | -25.00 | |||||||||||||
YRS | 29 | 28 | 31 | 30 | 30 | 30 | 29 | 29 | 30 | 30 | 30 | 29 | 16 |