on august 30, dorian became a first major hurricane of the season, and then became a category 4 hurricane from a category 2 in 9 hours. dorian later became a category 5 hurricane, making 2019 the fourth consecutive season to feature at least one category 5 hurricane (matthew in 2016, irma and maria in 2017, and michael in 2018). the storm was the second most-intense storm to strike anywhere in the atlantic basin.