Nearly 155,000 utility customers are without power in Puerto Rico as Category 3 Hurricane Erin batters the Caribbean, bringing heavy rainfall and gusty winds to Puerto Rico and the Virgin Islands.“The adverse weather has caused multiple interruptions across the island,

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 transmission and distribution of power on the island. The weather canceled more than 20 flights, officials said.

The outer bands of powerful Hurricane Erin lashed Puerto Rico, and the storm is approaching the Bahamas next. What can the mainland U.S. expect?