I've been doing some research on strong gusts (150+ mph) from Mt. Washington, and I found some interesting results concerning their frequency from year-to-year.

The NOAA had daily data back thru 1951; here are the frequency of days with at least one 150+ mph gusts:

2007: 1
2006: 1
1996-2005: none
1995: 1
1994: 1
1993: 1
1992: none
1991: 1
1990: 1
1989: 2
1988: 1
1986-1987: none
1985: 2
1983: 3
1982: 1
1981: none
1980: 2
1979: 2
1978: none
1977: 1
1976: none
1975: 1
1974: none
1973: 1
1972: 1
1971: none
1970: 1
1967-1969: none
1966: 1
1954-1965: none
1953: 1
1952-1951: none

Check out the totals per decade:
2000's: 2
1990's: 5
1980's: 11
1970's: 7
1960's: 1
1950's: 1

Does anyone have any ideas as to why there were so many strong gusts in the 1970s and 1980s, yet so few in the late 1990s/early 2000s, and 1950s-1960s?

I'd also like to make a list of all dates with average wind speeds of 100+ mph, but they don't list 'highest average wind speed for a single day' on the annual reports, so it would take MUCH longer to put that list together because I'd have to check every single month's report.