Washington (CNN) President Donald Trump said Sunday that he's "not sure that (he's) ever even heard of a Category 5" hurricane, despite four such storms -- including Hurricane Dorian -- having threatened the US since he took office.

"We don't even know what's coming at us. All we know is it's possibly the biggest. I have -- I'm not sure that I've ever even heard of a Category 5. I knew it existed. And I've seen some Category 4's -- you don't even see them that much," Trump said at a briefing with officials at FEMA's headquarters in Washington, DC.

"But a Category 5 is something that -- I don't know that I've ever even heard the term other than I know it's there. That's the ultimate, and that's what we have unfortunately," he added, in reference to Hurricane Dorian.

The comments from the President came just before Dorian, a dangerous Category 5 storm, made landfall on the Abaco Islands in the Bahamas. The storm is the most recent of four Category 5 hurricanes to endanger parts of the US since Trump assumed the Oval Office. As of Monday morning, Dorian is still battering the Abaco and Grand Bahama Islands. The hurricane -- the strongest on the planet anywhere this year -- lashed the region overnight and is forecast to continue through much of Monday. The storm is now expected to move northward and possibly bring hurricane-force winds to Florida Monday night before moving up the east coast.

In September 2017, nearly eight months into Trump's presidency, Hurricane Irma, one of the strongest Atlantic basin hurricane ever recorded outside the Gulf of Mexico and the Caribbean Sea, affected at least nine US states. That same month, Hurricane Maria devastated the US territory of Puerto Rico, leaving behind an island that is still struggling to recover.

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