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Topline: President Donald Trump has cancelled his World War II commemoration trip to Poland this weekend to deal with fast-approaching Hurricane Dorian, which is forecast to make landfall in Florida as a Category 4 storm on Labor day.

Vice President Mike Pence will replace Trump in Warsaw over the weekend, to commemorate 80 years since the start of the Second World War. Trump said it was “very important” for him to focus on the hurricane from Washington. He told Polish President Andrzej Duda that he plans to reschedule the trip in the near future.

But the cancellation was reportedly a shock to White House staff and journalists, some of whom were either already in Poland, or were on their way to Warsaw to cover his visit, according to AP.

Hurricane Dorian is expected to hit Florida on Monday, bringing winds of 130 mph. It reached category 2 status on Thursday, and is forecast to be the biggest storm since 1992’s Hurricane Andrew hit Florida. Every county in the state is under a state of emergency.

Dorian could threaten Trump’s Florida resort, Mar-a-Lago, which is situated in the Hurricane’s “cone of uncertainty,” according to the Tampa Bay Times.

Tangent: According to Politico, Trump's substitution could thwart Poland’s ruling Law and Justice party’s plan to shake off a scandal that saw its deputy justice minister quit this month over a smear campaign he allegedly coordinated against judges opposed to judicial reform. The speaker of the parliament's lower house also resigned earlier this year after he abused his access to a government jet.

Crucial quote: “It’s looking like it could be an absolute monster,” Trump said of the storm on Thursday, in a Rose Garden address.

Key background: The hurricane could either reach Georgia, which has also declared a state of emergency, or track along the Atlantic coast, according to meteorologists. It was feared that it would hit Puerto Rico, which is still recovering from weakened infrastructure as a result of hurricanes Maria and Irma in 2017. It brushed past the U.S. territory but hit the U.S. and the British Virgin Islands.

Meanwhile, this is the second trip that Trump has cancelled in as many weeks, following his decision to scrap a visit to Denmark after it rejected his proposal to hold talks on the sale of Greenland.

Further reading: You can stay informed on Dorian with the following Forbes coverage:

Hurricane Dorian: Listen To Weather Experts Instead Of Looking At Weather Models

How ‘King Tides’ Could Make Hurricane Dorian Even More Destructive