Erin has intensified to a Category Four Hurricane as it makes its way toward the East Coast of the United States.

Hurricane Erin is currently at Category 4 hurricane with sustained wind speeds of 145 mph and gusting to even higher levels. NOAA Hurricane Hunters flying into the storm also found that the minimum pressure was down to 935 mb as of 8:00 am AST on August 16.

Heavy rains were forecast to start late Friday in Antigua and Barbuda, the U.S. and British Virgin Islands and southern and eastern Puerto Rico.