Even more hurricanes are rapidly intensifying in the Atlantic as the oceans and atmosphere warm in response to fossil fuel pollution and the global warming it causes.

Hurricane Erin exploded in strength and became a major storm in Atlantic waters just north of the Caribbean on Saturday, rapidly powering up from a tropical storm in a single day.

Flash flooding and mudslides in some areas are possible, especially on the south and east sides of Puerto Rico, where the moisture-laden winds are onshore.