Tropical Storm Ernesto expected to hit Puerto Rico and the Virgin Islands before strengthening into hurricane CBS NewsTropical Storm Ernesto tracker: Latest forecast as tropical storm heads toward Virgin Islands, Puerto Rico this evening Yahoo! VoicesHurricane Ernesto Could Form Tonight: Where Forecasters Say Next Hurricane Will Hit ForbesErnesto Brings Flood Threat To Caribbean Today The Weather ChannelMaps show Tropical Storm Ernesto’s path and forecast as it intensifies en route to Puerto Rico CBS News