Hurricane Matthew is massive and dangerous.  Overnight it briefly upgraded to a Cat5 status (160 MPH winds), and now remains as a very strong Cat4 (150 MPH winds).  With the potential path having a great deal of uncertainty, Florida Governor Rick Scott is warning everyone to pay attention – things could change quickly and impact Wednesday.
The East Cost of the U.S. also needs to pay attention because this could be on/near the East coast by next Friday.

More below
According to the Hurricane Hunters and forecasters hurricane Matthew has made its long expected northerly turn.   The 11 a.m. advisory from the NHC has Matthew moving to the west at 3 mph. It remains a powerful Category 4 hurricane with 150 mph winds.
Matthew briefly reached Category 5 intensity Friday evening, packing winds of 160 mph. This makes Matthew the first storm to reach Category 5 since Felix in 2007.  Matthew has weakened a bit since, falling back to Category 4 strength by Saturday morning. It has maintained Category 4 intensity since that time.
Matthew looks likely to make landfall on either western Haiti, eastern Cuba or Jamaica sometime late Monday or early Tuesday. A hurricane warning has been issued for Jamaica and Haiti and parts of Cuba.
At this time, Matthew is expected to make a close pass to Florida’s east coast next week but stay offshore.  This could change at any moment.
However, there is still some uncertainty in the long range forecast, and Florida residents should continue to monitor this system closely.  Any “westerly” movements, twitches or shifts in the next 24 hours could rapidly change the projected path.  If you don’t already have a hurricane plan in place you should make one this weekend, regardless if this system stays offshore and away from Florida.