Ernesto becomes hurricane after leaving 728,000 without power in Puerto Rico ABC NewsHurricane Ernesto May Target Bermuda After Lashing Puerto Rico, Virgin Islands The Weather ChannelHurricane Ernesto tracker: Latest forecast as nearly half of Puerto Rico is without power, along with flash flooding and mudslide concerns Yahoo! VoicesErnesto getting stronger as it plows through Caribbean islands. Here’s where it could go next and how fast it could intensify. CNNNearly half of Puerto Rico is without electricity after Ernesto, utility reports The Washington Post