These include warnings for life-threatening storm surge, which the National Weather Service forecasts will reach 12 feet in some places.
During a storm surge watch, residents face potentially life-threatening flooding during the 48 hours following the watch being issued. "Do not think you can survive it".
With Florence still in mind, Michael may be making an appearance this week.
"We are running out of time", the Republican governor said on Twitter. He added, "Today it is about life and safety". Storm surge is likely to be catastrophic north of Crystal River north and west to the popular beach destination of Panama City.
He said, "There's nothing between us and this storm but warm water and I think that's what terrifies us about the potential impacts".
"This storm will be life-threatening and extremely unsafe", Gov Scott said after he received a briefing at the state's emergency management centre.
In neighboring Alabama, Governor Kay Ivey declared an emergency for the entire state on October 8 in anticipation of wind damage, heavy rains and power outages. The category one hurricane is expected to affect parts of the state later this week. This soon to be tropical storm will be a big rain maker and could become a hurricane in a couple of days. High surf warnings were in effect already at the Alabama coast. "And that amount of rain could lead to some flash flooding and the possibility that there could be a couple of tornadoes".
As the storm moved north it battered Mexico's Yucatan Peninsula and western Cuba with drenching rains and winds of up to 130km/h, forecasters said.
Winds of 15 to 25 knots with gusts prompted Monday's Small Craft Advisory on South Florida waters. "Grab your rain gear because it won't stop until likely Friday".
A hurricane Warning was issued from the Alabama-Florida border eastward to Suwannee River.
"As Hurricane Michael nears landfall, we are working with state and local officials in Florida to take all are in precautions and we urge all residents to be prepared and to heed local officials".
Back then, the Category 4 storm smashed into the Florida panhandle with 150 miles per hour winds before stalling out, leaving north and west Georgia dealing with devastating rains and flooding.
The storm is expected to strengthen as it nears land sometime late Tuesday or Wednesday.
Escambia through Franklin counties in Northwest Florida are included in the hurricane watch.
It is expected to be a major Category 3 hurricane by the time it hits Florida on Wednesday, before moving northeast across the southeastern United States through Thursday.
Another national, Neil Fung, said the storm looks like " a major one".