President Joe Biden plans to travel to Florida on Saturday to survey the damage from Hurricane Idalia, he told reporters during a visit at FEMA headquarters.

The visit was billed as one to thank FEMA staff for their work during the hurricane and the Maui wildfires.

Biden noted that he once again spoke with Florida governor and 2024 presidential candidate Ron DeSantis on Thursday.

"Governor DeSantis and I spoke again this morning and let him know that I accrued his major disaster declaration," Biden said.

-ABC News' Molly Nagle

Florida Gov. Ron DeSantis visited Steinhatchee in Florida's Big Bend region on Thursday to survey the damage caused by Idalia.

"I'm seeing a lot of damage, and I'm also seeing a lot of resiliency," DeSantis said.

The governor said 135,000 customers are still without power in the state and noted that there have been 430,000 restorations since the storm hit on Wednesday.

DeSantis said most schools that closed due to the hurricane will be open by Friday.

-ABC News' Will McDuffie and Hannah Demissie

Tropical Storm Idalia is moving off the North Carolina coast and heading out to sea.

Rain and gusty winds will continue to hit North Carolina's Outer Banks through the afternoon before trailing off Thursday evening.

Parts of eastern North Carolina recorded more than 6 inches of rain, causing flash flooding Thursday morning.

Charleston, which is vulnerable to flooding, recorded a storm surge of 3.47 feet -- its fifth highest on record.

But Charleston Mayor John Tecklenburg said the city "really dodged the bullet" of Hurricane Idalia.

"The wind and the rain impact were pretty minimal," he said Thursday.

Twenty-two water rescues were reported, which mostly were for people trapped in flooded cars, the mayor said.

-ABC News' Jason Volack

Many people will be able to observe and take photos of Wednesday night's rare blue supermoon, but those impacted by Hurricane Idalia may experience worse tidal flooding because of the supermoon.

A blue moon refers to the second time a full moon appears during the same month. A supermoon is when it is at the closest point in its orbit around the Earth, according to NASA.

Both high and low tides are more intense with a supermoon because of the moon's gravitational pull on the oceans, according to NASA.

"Perigean high tides during a full moon and new moon can cause major problems on some coasts, especially if weather adds high waves or a storm surge," NASA said.

Areas in Pasco County, Florida to St. Petersburg, Florida, experienced flooding after Idalia made landfall on Wednesday as a Category 3 hurricane.

ABC News Chief Meteorologist Ginger Zee predicted flooding may occur in Savannah, Georgia, and in Charleston, South Carolina, as Idalia, now a tropical storm, makes its way through the region.