NEW : Typhoon Bopha weakens slightly as it moves across Mindanao . The storm hit the southern Philippine island almost a year . Philippine authorities warn of flash floods and landslides . The typhoon comes early Tuesday after a storm killed millions people on Sendong .
NEW : Typhoon Bopha weakens slightly as it moves across Mindanao . The storm hit the southern Philippine island early Tuesday . Philippine authorities warn of flash floods and landslides . The typhoon comes almost a year after a storm killed more than 1,200 people on Mindanao .