Nathan Deal noted Irma's unpredictability at a news conference in Atlanta Friday after the National Hurricane Center nudged the storm's predicted track significantly westward. Parts of south Georgia are under a Hurricane Warning.
Irma, once ranked as one of the most powerful hurricanes recorded in the Atlantic, came ashore in Florida as a category four storm on Sunday and battered towns as it worked its way up the state.
The state of emergency now includes all 159 counties in Georgia.
Hurricane Irma has weakened to a tropical storm, but is still proving deadly as it swirls beyond Florida flooding the coast and sending trees crashing onto homes.
Georgia officials declared a state of emergency in all counties on Sunday in preparation for Hurricane Irma after the National Weather Service issued a tropical storm warning in Atlanta - for the first time in the city's history.
In the latest Hurricane Irma models and maps, South and North Carolina are not out of the woods. He also ordered nearly 540,000 residents living near the Peach State's coast to evacuate ahead of the storm.
Glynn County is still under a tropical storm warning as well as a storm surge warning.
"The storm is still so far away", Bryson said, urging people not to become complacent.
The Atlanta Journal-Constitution
The huge storm - 80 miles wide with winds of 125 mph as it leaves Cuba and turns toward Florida - prompted one of the largest evacuations in US history.
Outage Map - Housed within the Outage & Storm Center, Georgia Power's interactive Outage Map provides near real-time information, allowing users to see where outages are occurring across the state and track estimated restoration times.
Becky and Mike Gerald evacuated their Tybee Island condo a block from the beach for Matthew.
The tidal surge sent damaged boats rushing more than three blocks onto downtown streets in St. Marys, just north of the Georgia-Florida state line, St. Marys Police Lt. Shannon Brock said.
Downtown Atlanta hotels remained full of evacuees.
When severe weather strikes, Georgia Power has access to additional resources available as part of the Southern Company system, which includes multiple electric and gas companies serving more than 9 million customers nationwide.
Travel could possibly result in citizens being stranded on the roadway or battling high cross winds and rain. We could also see between 3 to 5 inches of rain. With wind gusts reaching 70 miles per hour (112 kph), authorities imposed a daytime curfew for the 112,000 residents of Lowndes County, which includes Valdosta, county spokeswoman Paige Dukes said.