The Category 3 hurricane was about 5 miles south of the city of Pinar Del Rio, with maximum sustained winds of 125mph, the US National Hurricane Center (NHC) said.

Ian is expected to strengthen further today after cutting a swath through Cuba’s farm country west of the capital Havana and emerging over the southeastern Gulf of Mexico, reaching Category 4 strength before it approaches the Florida west coast, the NHC said.

The Biden administration declared a public health emergency for the state of Florida on Monday, in anticipation of the storm’s arrival, and said it was working with local officials to provide support.

Hurricane Ian made landfall in Cuba’s Pinar del Rio province early today, prompting officials to cut power to the entire province and evacuate 40,000 people from low-lying coastal areas, according to local media reports.

As of 6:30am, regional broadcaster TelePinar reported an eerie calm in the city of around 145,000 people as the eye hovered over the area, but warned of fierce winds to follow.

Cuban state-run media reported strongest winds to date from Ian at 130mph (208kmh) at San Juan y Martinez, a small town on Cuba’s southwest coast.

Pinar del Rio province is a lightly populated region but a top producer of farm crops and tobacco. State-run media said 33,000 tonnes of tobacco from prior harvests had been secured ahead of the storm.

Rain and winds buffeted Havana early today, but the city, under a tropical storm watch and preparing for a potential storm surge, looked likely to be spared the brunt of Ian’s strongest winds.

The hurricane hits Cuba at a time of dire economic crisis. Hours-long blackouts had become everyday events across much of Cuba – even before the storm – and shortages of food, medicine and fuel are likely to complicate efforts to recover from Ian.

The Miami-based National Hurricane Center warned of a life-threatening storm surge, flash floods and possible mudslides across western Cuba today.