Tropical Storm Trami has blown away from the north-western Philippines, leaving at least 46 people dead after extensive flooding stranded thousands of people – with many of them trapped on their roofs.

Philippine rescue workers battled floodwaters Friday to reach residents still trapped on the roofs of their homes as Tropical Storm Trami moved out to sea after killing at least 40 people.

Tropical storm Trami has blown away from the northwestern Philippines, leaving at least 46 people dead mostly in extensive flooding that forced authorities to scramble for more rescue boats to save thousands of terrified people,