A tropical depression has been upgraded to Isaac, the season’s latest tropical storm, which last night was heading west towards the Lesser Antilles.The storm, which is expected to pass over the islands late today, is expected to continue west, and is not ranked a threat by the Bermuda Weather Service.Isaac, along with the rest of the weather affecting the region, can by followed online via The Royal Gazette’s weather page.More on Tropical Storm Isaac, Page 11