A typhoon that killed four people and destroyed hundreds of homes on islands in the western Pacific Ocean has weakened but is expected to cause flooding in the Philippines when it slams ashore this weekend.

Typhoon Maysak was downgraded from a supertyphoon Thursday morning, with the latest maximum sustained winds at 130 mph, down from 160 mph. The storm is losing force but still is packing power as it barrels toward northern Luzon island in the Philippines, said senior meteorologist Paul Stanko of the National Weather Service in Guam.

"Floods will be the single biggest hazard for the Philippines," Stanko said of the storm he expects to hit Sunday morning. "It'll bring buckets of rain, and that almost always creates problems for the Philippines because it's subject to flooding."

He said the weakening typhoon still will create "big problems."