The National Hurricane Center is also forecasting life-threatening storm surge in excess of 9 feet in spots along the Florida Panhandle.
RELATED: What is storm surge and why is it dangerous?
Storm Surge is the height water will rise above sea level due to the storm.
The highest rainfall with Michael is expected to be along the Florida Panhandle with cities receiving 6"-10" and isolated areas closing in on a foot of water. As Michael moves north into the Carolinas, heavy rainfall will also fall in spots that were drenched by Hurricane Florence last month. 3"-7" of rain is expected in parts of North and South Carolina by the end of the week.