Home Society Hurricane Irma hits Caribbean The all-time strongest Atlantic storm made its first landfall in Barbuda at around 2:00 a.m. EST on September 6, 2017, with winds of 185 mph. Reuters/Storyful September 7, 2017 13:48 IST Close The all-time strongest Atlantic storm made its first landfall in Barbuda at around 2:00 a.m. EST on September 6, 2017, with winds of 185 mph.