After Tampa, Irma will then take a northwesterly turn as it moves into Georgia near the Albany area, becoming a tropical storm by Monday evening.
A flash flood emergency was issued for Charleston Monday afternoon as Irma, which was downgraded to a tropical storm Monday morning, battered the Southeast with torrential rain and unsafe storm surges.
Irma, which made landfall in Florida as a Category 4 storm with sustained winds of 155 miles per hour, is one of the most powerful Atlantic hurricanes ever observed, and is considered to be extremely risky, according to the Federal Emergency Management Agency.
The National Weather Service in Huntsville has issued a Wind Advisory, which is in effect from 3 PM this afternoon to 4 AM CDT Tuesday for Madison, Morgan, Marshall, Jackson, DeKalb and Cullman Counties.
Storm surge warnings were discontinued Monday for all of Southwest Florida as water began to recede.
In Miami-Dade, over 80 percent of customers lost power, the mayor said Monday, and a curfew is in effect until further notice.
Note: This story was updated at 9:15 a.m. Monday with the most recent power outage information.
A flash flood warning is in effect along the southern coast of SC, where more than 40,000 were ordered to evacuate barrier islands.
Hurricane Irma prompted Georgia's governor to declare an emergency Sunday for the entire state, where coastal Savannah was evacuated for the second time in less than a year.
He said firefighters specially trained in multi-patient incidents, technical rescues and swiftwater emergencies have been busy double checking equipment and reviewing safety measures to ensure operational readiness. "For many people, supplies are running low and anxiety is running high", the statement said.
The Keys were under mandatory evacuation orders as Irma neared, but not everyone left.
The tidal gauge near downtown Charleston says water levels are running 2 feet (0.6 meters) above normal.
"If you ride around Chatham County, it's a ghost town", Jones said.
Sustained winds will be 30 to 40 miles per hour with wind gusts up to 50 miles per hour when the winds peak.
The mountains may experience higher wind gusts because of the elevation. The city also saw almost 12 inches of rain and a 7-foot storm surge.
The National Weather Service in Peachtree City, Georgia, confirmed that Atlanta - more than 250 miles (400 kilometers) inland from either the Atlantic or Gulf coasts - was under a tropical storm warning for the first time.
Reed says the Red Cross and recreations will be open for those seeking shelter from the storm. Rain will be heavy by now. The advisory also cautioned that tornadoes are possible today in SC.
South Carolina Electric & Gas reported more than 13,000 customers without service Monday.