Extent of damage still unknown but power outages, flooding widespread.
One of the strongest hurricanes to ever hit island made landfall Wednesday.
Some islands wrecked by Hurricane Irma are threatened.
The storm intensified to a Category 5 Monday evening.
Residents say governments slow to react to devastation.
Millions of homes without power, damage toll to be assessed Monday.
Tampa area has not taken a direct hit from a major hurricane in nearly a century.
Twin Category 4 storms have desperate residents seeking shelter across the region.
Hurricane Irma devastated a string of Caribbean islands, leaving at least 16 people dead and thousands homeless.
Devastated islands face new threat from Jose.