At a news briefing Sunday morning, Puerto Rico Gov. Jenniffer González-Colón advised residents to stay home if they can.

Hurricane Erin exploded in strength to a Category 5 storm in the Caribbean on Saturday, rapidly powering up from a tropical storm in a single day, the U.S. National Hurricane Center (NHC) said.

The rain and winds from the outer bands of the storm left about 147,000 customers without power Sunday morning in Puerto Rico, according to Luma Energy, a private company that oversees the transmissi...