By Ivelisse Rivera and Ezequiel Abiu Lopez SAN JUAN, Puerto Rico/Santo Domingo (Reuters) -Hurricane Fiona was churning north on Monday evening after bringing torrential rain and powerful winds to the Dominican Republic and triggering a total power outage in neighboring Puerto Rico, where at least two people died. The Category 1 hurricane will likely become a Category 3 as it moves across warm Caribbean waters toward the Turks and Caicos. On Tuesday, the center of Fiona is expected to pass near or to the east of the archipelago, which is subject to a current hurricane warning, the U.S. National…