In 1886, seven hurricanes struck the US, including two major hurricanes. It was the busiest hurricane season on record.
1886 Jun TX, N2; LA, 2 2 973 85 ----- 1886 Jun FL, NW2; I-GA, 1 2 973 85 ----- 1886 Jun FL, NW2; I-GA, 1 2 973 85 ----- 1886 Jul FL, NW1 1 985 70 ----- 1886 Aug TX, C4 4 925 135 "Indianola" 1886 Sep # TX, S1, C1 1 973 80 ----- 1886 Oct LA, 3; TX, N2 3 955 105 -----
http://www.aoml.noaa.gov/hrd/hurdat/ushurrlist18512009.txt
At 390 ppm, we haven’t had any hurricanes for almost 35 months.