Thanks for posting this and many other threads like this.
Someone asked on the link you just posted what the record was for barometric pressure. Recorded measurements going back to 1900 below.
http://www.wxresearch.org/family/hurpres.htm
Year Hurricane Pressure
1988 Hurricane Gilbert 26.14 in. 885.2 mb
1935 Florida Keys 26.35 in. 892.3 mb
1980 Hurricane Allen 26.35 in. 899.1 mb
1969 Hurricane Camille 26.84 in. 908.9 mb
1995 Hurricane Opal 27.05 in. 916 mb
1989 Hurricane Hugo 27.11 in. 918 mb
1992 Hurricane Andrew 27.23 in. 922 mb
1919 Texas Hurricane 27.37 in. 926.9 mb
1928 Okeechobee, Fl 27.43 in. 928.9 mb
1960 Hurricane Donna 27.46 in. 929.9 mb
1900 Galveston Hurricane 27.49 in. 930.9 mb
1909 Louisiana Hurricane 27.49 in. 930.9 mb
1915 Louisiana Hurricane 27.49 in. 930.9 mb
1961 Hurricane Carla 27.49 in. 930.9 mb