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.

Widespread flooding and landslides set off by a tropical storm in the northeastern Philippines on Thursday left at least 24 people dead, swept away cars and prompted authorities to scramble for motorboats to rescue trapped villagers,