Donald Trump Jr. on Sunday shot back at documentary filmmaker Michael Moore after he questioned whether President Trump Donald John TrumpUS reimposes UN sanctions on Iran amid increasing tensions Jeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Trump supporters chant 'Fill that seat' at North Carolina rally MORE's Mar-a-Lago resort had opened up as a shelter to be used during Hurricane Irma.

"It's on an island on both the ocean & intercostal and in a mandatory evacuation zone... probably not the best idea, but you know, narrative!" Trump Jr. tweeted.

It's on an island on both the ocean & intercostal and in a mandatory evacuation zone... probably not the best idea, but you know, narrative! https://t.co/Ji5V5lh7ya — Donald Trump Jr. (@DonaldJTrumpJr) September 10, 2017

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His tweet comes in response to Moore, who tweeted on Friday before the storm battered Florida: "Has he opened up Mar-a-Lago as a shelter yet?"

Irma made landfall twice on Sunday, first as a Category 4 storm and then again as a Category 3, as it tore through Florida.

The expectation of the hurricane led to one of the biggest evacuations in U.S. history, with millions leaving their homes to escape the storm. It brought heavy winds and flooding to the region and left millions of people without power. Shelters were opened across the state.

On Monday, Irma was downgraded to a tropical storm, but officials are warning of continued dangers.

President Trump said Sunday he plans to visit Florida "very soon."