Hurricane Ian updates: Florida death toll climbs
Lee County, which encompasses Fort Myers, accounts for most of the fatalities.
The remnants of Ian are charging up the East Coast on Saturday after making landfall as a Category 1 hurricane in South Carolina on Friday afternoon.
The monster storm made its first U.S. landfall on Wednesday on Florida's west coast as a powerful Category 4 hurricane, shredding homes with ferocious winds topping 150 mph. Florida's death toll has climbed to at least 81, according to information from local officials.
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5,000 Florida Guardsmen activated and prepping for Hurricane Ian
Florida Gov. Ron DeSantis has activated 5,000 Florida National Guardsmen to armories across the state in preparation for Hurricane Ian, which is forecast to hit the state on Wednesday.
Roughly 2,000 National Guard members from neighboring states such as Tennessee are also being activated to assist, the Florida National Guard said in a statement Tuesday.
"The Florida National Guard is well-equipped, with assets including high-wheeled vehicles, helicopters, boats, generators and more," the statement said.
The U.S. Navy has authorized non-essential personnel in various Florida counties to evacuate.
-ABC News’ Matt Seyler
Landfall forecast for Wednesday afternoon or evening
Hurricane Ian, barreling north toward Florida with 120 mph winds, is now located about 230 miles away from Sarasota.
Ian is expected to make landfall in Florida on Wednesday afternoon or early evening.
Ian's outer bands are already hitting South Florida, bringing a threat of heavy downpours, strong wind gusts, frequent lightning and even tornadoes. A tornado watch is in effect for South Florida until 5 a.m. Wednesday.
-ABC News’ Dan Peck
Walt Disney World, Universal Orlando to close
Walt Disney World and Universal Orlando will close Wednesday and Thursday due to the storm.
Coastal Georgia, South Carolina under tropical storm watches
As Ian moves north over Florida, tropical storm force winds will reach coastal Georgia and South Carolina.
Tropical storm watches have been issued for Savannah and near Charleston.
Georgia Gov. Brian Kemp has issued a state of emergency.
Tropical Storm Ian will rapidly intensify Sunday, forecasts show
Ian remains a tropical storm with winds of 50 mph, but the storm system is expected to rapidly intensify on Sunday as it moves over warm waters in the Caribbean Sea, according to the National Hurricane Center.
The seawater currently carries very favorable conditions for strengthening over the coming days, with temperatures between 85 and 90 degrees Fahrenheit -- the perfect temperatures for fueling a powerful storm as it stays over open water.
Ian is expected to strengthen to a hurricane by Sunday night and into a major hurricane later Monday night as it passes by Cuba.
The NHC currently forecasts Ian to strengthen into a major Category 4 hurricane on Tuesday in the Gulf of Mexico as it heads toward Florida.
Ian is expected to make landfall on the west coast or the panhandle of Florida on Wednesday or Thursday.
Some weakening could occur before the storm system makes landfall, possibly dipping below major hurricane status before impacting coastal communities.
A hurricane warning is currently in effect for the western portion of Cuba, where flooding rains and major storm surge are forecast.
-ABC News' Riley Winch