A post analysis shows that the storm was stronger than originally thought, the wind is estimated at 160 mph in case of landfall. This makes Michael one of only four Category 5 hurricanes, according to scientists in the United States.
The storm was originally designated Category 4 at 155 mph when it landed near Mexico Beach and Tyndall Air Force Base in Florida on October 10, the Hurricane Center said in a statement.
"Category 5 winds were probably observed in a very small area on and near the coast, and the change in estimated wind speeds is of little practical significance for the impact of the storm," the statement said.
The new estimate of wind speeds of 1
Aerial views after the storm showed massive damage and destruction in coastal towns of the Panhandle, such as Mexico Beach and Panama City Beach.
Michael's deadly trail of devastation from the Florida Panhandle to the Carolinas, where it triggered flash floods that turned roads into rivers.
According to the Hurricane Center, it was directly responsible for 16 deaths and about $ 25 billion in damages in the United States.
Michael was the first hurricane to land as Category 5 in the United States since Hurricane Andrew in 1992.
The others were Camille in 1969 and the Labor Day hurricane in 1935.
Michael is the strongest hurricane of landings in the Florida Panhandle and only the second known Category 5 landing site on the northern Gulf Coast, according to the Hurricane Center.