NEW : Typhoon Bopha weakens slightly as it moves across Mindanao . Typhoon Bopha struck the southern island of Mindanao shortly before 4:45 a.m. ( 3:45 p.m. Monday ET ) , the National Disaster Risk Reduction and Management Center reported . The storm hit the southern Philippine islands early afternoon . Philippine authorities warn of flash flooding and landslides . The typhoon comes almost a year after a landslide killed more than 100 people on Mindanao .
NEW : Typhoon Bopha weakens slightly as it moves across Mindanao . The storm hit the southern Philippine islands early afternoon . Philippine authorities warn of flash flooding and landslides . The typhoon comes almost a year after a landslide killed more than 100 people on Mindanao .