http://www.nhc.noaa.gov/pdf/NWS-TPC-5.pdf
The peaks occurred in the 1930s and 1960s.
Table 4. The most intense mainland United States hurricanes ranked by pressure, 1851-2006 (includes only major hurricanes at their most intense landfall).
Disrupting the Borg is expensive and time consuming!
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Real Science 
There are people who still think Katrina was a Category 5 when it hit land.
Did you know there is still a tent city in New Orleans for people displaced by Katrina?