Hurricane Teddy strengthened to Category 4 yesterday as it continued its track towards Bermuda.The storm is expected to be 180 miles south-southeast of the island at 6pm on Sunday, but is predicted to move closer as a Category 2 or Category 3 hurricane.The US-based National Hurricane Centre said yesterday: “Teddy is expected to approach Bermuda as a hurricane this weekend and make its closest approach late Sunday or Monday.”While the exact details about Teddy’s track and intensity ne