I did some digging around myself for BWI, according to this article from 2008, the highest ever was Hazel at 84 mph: http://articles.balt...ds-october-1954
However, I found the 2011 annual summary for BWI, which lists the highest gusts ever recorded each month, and it lists the July 2010 one as the highest: http://www1.ncdc.noa...9B9B324AAD9.pdf
Same deal with DCA, which lists 74 mph in March 2008 as the highest instead of Hazel: http://www1.ncdc.noaa.gov/pub/orders/IPS-06C5C259-4839-4269-8E5C-33F8B09867E5.pdf
I noticed they're all relatively recent records, so maybe the Hazel ones aren't considered to be reliable anymore?