Dorian strengthened to a Category 1 hurricane Wednesday, lashing the U.S. and British Virgin Islands with heavy rain. <br />The entire British Virgin Islands lost power at the height of the storm, according to the British Islands Department of Disaster Management. Partial power was restored to one-third of the island by 9 p.m. Almost 40,000 customers were without power on the U.S. Virgin Islands at about 5 p.m. on Wednesday, but that number slowly eased throughout the night.
