Hurricane Ian has strengthened, with winds now at 85 mph, as it continues to move northward off the east coast of Florida.

The forecast track has shifted a little farther north with the latest advisory at 11 p.m. ET, putting cities like Myrtle Beach, S.C., in the storm's path for worse impacts, while less impact could be seen in Charleston.

Wind Gusts up to 90 mph are possible in Myrtle Beach on Friday afternoon, as Ian is expected to make landfall toward the south. Much of Georgia to the Carolinas will experience wind gusts over 50 mph.

-ABC News' Riley Winch

Despite water receding in Fort Myers following Hurricane Ian's destructive path across Florida, 80% of the city is still without power, while 70% is without water, Mayor Kevin Anderson told ABC News Live Prime.

Anderson said the most important thing is to get electricity and water back up and running for residents, especially since it's still hot and humid in the area and people need air conditioning and water.

"Tomorrow, we're expecting the delivery of the pods with the water and food and ice and we'll be setting up delivery stations," he said. "Again, the problem is it's very, very difficult to live here without air conditioning."

Fort Myers has performed about 200 rescues and counting, according to the mayor.

"The crews were out and they're probably still out there working now, getting the roads cleared and getting the roads where they're traversable so that emergency vehicles can respond," Anderson said.

Eva Neocleous, her mother, Aurora, and dog, Primi, waited more than 24 hours to get rescued from their Fort Myers home in the aftermath of Hurricane Ian.

The family first called for help at 11 a.m. on Wednesday, but conditions were too dangerous for first responders at the time. Nobody came until the Cajun Navy pulled them out around 12:30 p.m. Thursday.

Neocleous said the ordeal was terrifying: "I thought I was going to die right there."

-ABC News' Rachel DeLima, Andrew Fies and Victor Oquendo

There have been more than 700 confirmed rescues in the aftermath of Hurricane Ian slamming Florida, Gov. Ron DeSantis said Thursday.

The Sanibel Causeway, which suffered significant damage in the storm, will most likely need to be rebuilt entirely, he said.

There were more than 2.3 million customers without power in the state just before 9 p.m. ET Thursday.

-ABC News' Darren Reynolds

The Federal Emergency Management Agency's search and rescue teams have been out in the field since 4 a.m. Thursday, FEMA Administrator Deanne Criswell told "Good Morning America." It will prioritize saving lives and helping people impacted by the storm, who may be trapped.

Criswell said FEMA has been hearing reports of people calling 911 through the night and will use information it has gathered in those hours to prioritize rescues in harder-hit areas.

"This has been just a catastrophic storm and it's left significant damage in its path," Criswell said.

Criswell said FEMA will be able to conduct rescues by land, air and sea.

The most significant impacts have been happening in Lee County, where people are without power and water. Criswell also expects impacts across the western coast of Florida.

"Water is dangerous. Even though the storm has passed, the water that is there is still dangerous. There's debris, there's chemicals, there could be downed power lines. People need to be careful, they need to stay vigilant," Criswell said.