Typhoon Usagi weakened sharply on Friday after bearing down on the Philippines' northern towns, blowing away houses in its path as authorities brace for another storm that could hit the capital Manila over the weekend.

The storm made landfall on the island of Luzon. Forecasters warned of torrential rain and landslides in the north of the country.

The fifth major storm in three weeks approached the Philippines on Thursday, prompting more largescale evacuations and a United Nations request for emergency funds to help the government ease the plight of hard-hit villagers.