The 1851 Atlantic hurricane season is the first season to be listed in the HURDAT archives, so it is the first officially listed season in the archives here. The official bounds of the season ran from June 15 to November 15, and the storms listed here are done so based off observations. Therefore, the data is incomplete, and relies on reports from significantly populated areas, or ships that rode out the storms as a result. Other storms have their peak intensities estimated, using the wind-pressure relationship, or the damage they caused if they made landfall in a populated area.


Name SSHWS category 1-min winds Pressure
One Category 2 hurricane 100 mph 977 mbar
Two Category 2 hurricane 90 mph ~980 mbar
Three Tropical Storm 60 mph ~1000 mbar
Four Category 3 hurricane 115 mph 960 mbar
Five Tropical Storm 60 mph ~1000 mbar
Five Tropical Storm 70 mph ~990 mbar