Hurricane Ian continues to gradually weaken as of 10 p.m. ET, with maximum sustained winds now down to 100 mph. The storm is moving to the north-northeast at 8 mph, and its center is currently about 80 miles south of Orlando.

The Florida Peninsula continues to experience dangerous weather impacts, including strong wind gusts, torrential rain and persistent storm surge in some areas.

Areas of relentless heavy rain will continue to bring the threat of dangerous flash flooding in some areas. This threat becomes even more dangerous during overnight hours.

-ABC News' Dan Peck

There were at least 30 rescues in Naples, Florida, on Wednesday amid ongoing rescue operations, the Collier County Sheriff's Office said.

"Our East Naples deputies did 30 rescue missions today. We are still collecting numbers from other areas. We are still rescuing people," the office wrote on Facebook.

"Water is everywhere. It will recede. There will be damage," it added. "Tomorrow we will have a better idea of the extent of damage. We will keep you updated."

The number of customers without power in Florida has topped 2 million, as Hurricane Ian continues making its way across the state.

Most of the outages are in the southern Gulf side of the state, primarily in Lee, Collier, Charlotte and Sarasota counties.

The outages are moving east as the storm moves across the state.

-ABC News' Darren Reynolds

Jacksonville Mayor Lenny Curry announced Wednesday evening that the city is closing Atlantic, Neptune and Jacksonville beaches ahead of Hurricane Ian’s impact on the area.

“We will reopen as soon as it’s safe for citizens,” Curry tweeted.