Hurricane Isaias updates: Isaias downgraded to post-tropical cyclone

At 2 a.m. ET, the National Hurricane Center declared Isaias a post-tropical cyclone -- a system that no longer possesses characteristics of a tropical system.

More than a foot of rain has fallen so far in parts of Georgia and Florida from Isaias, including 12.97 inches in Bellwood, Alabama, 12.47 inches in DeFuniak Springs, Florida, 11.63 inches in Graceville, Florida, and 10.01 inches in Elba, Alabama.

As of the latest update from the National Hurricane Center, Isaias is over southern Alabama with maximum sustained winds of 35 mph and is moving north at 14 mph.

Since Isaias has weakened to below tropical storm strength, all storm surge and tropical storm alerts have been discontinued. However, wind advisories remain up across much of the region for sustained winds of 20 to 30 mph with gusts up to 50 mph possible through Sunday morning.

-ABC News' Kyle Reiman

At least 800,000 customers in Florida, Alabama and Georgia are currently without power Saturday morning as Hurricane Isaias made landfall near Destin, Florida, in the Florida Panhandle on Friday night.

As of 3:39 a.m. ET on Saturday, at least 445,000 are without power in Florida, with an estimated 309,000 in Alabama and 50,000 in Georgia also without power in the hurricane zone.

-ABC News' Michael O'Keefe

Hurricane Isaias continued its march north over the western Florida Panhandle on Friday night, although it weakened to a Category 1 storm, the National Weather Service said.

Maximum winds were at 90 mph and it was moving at 20 mph, the NWS said.

Florida Gov. Ron DeSantis provided an update on Hurricane Isaias after the storm made landfall in the state Friday night.

DeSantis said wind shear weakened the storm from a Category 3 to a Category 2 before landfall, although strong winds and heavy rainfall remained significant threats.

Florida Department of Transportation crews and search-and-rescue teams were scheduled to begin mobilizing around 3 a.m. Saturday.

Transportation crews planned to clear debris from roadways and inspect bridges, while emergency responders, including the Florida National Guard and Florida Fish and Wildlife Conservation Commission, prepared to assist with rescue operations where needed.

There were approximately 260,000 electric utility accounts without power across the region, he said. Utility crews were prepared to begin restoration work as soon as conditions became safe.

The governor said he would provide another update on Saturday morning.

-ABC News' Jason Volack