This is an article written by Meteorologist Zack Fradella:
As of the 8 a.m. advisory from the National Hurricane Center, Hurricane Irma has weakened slightly now down to a strong Category 4 storm with winds of 150 mph. Movement continues west-northwest at 16 mph.
The track thinking remains the same with a landfall expected on Sunday morning at the southern tip of Florida near the middle to upper keys. Thereafter the storm will move due north up the spine of the state bringing major impacts to almost every city from Miami to Orlando/Tampa to Jacksonville. Those residents in Georgia, South Carolina and North Carolina will see less impact as long as the storm remains inland although residents in these states are being urged to prepare for a minimal hurricane.
Hurricane watches and warnings have been posted from South Florida up through the Peninsula and expect these to be expanded north throughout the day today.
For those trying to make final preparations, South Florida has all of Friday to do so while the rest of the state has until Saturday afternoon. Conditions will quickly deteriorate from south to north Saturday afternoon and especially Sunday when landfall is expected.