Tropical storm is set to evolve into a Category 4 or 5 hurricane by the weekend in the Caribbean
                                
                                
                                    (Newser) -
                                    At the moment, Lee is a mere tropical storm churning its way through the Atlantic. By later Wednesday, however, it could be upgraded to a hurricane, and by Friday, it's expected to transform into an "extremely dangerous" one, reports  Axios . "There is high confidence that Lee will...