Typhoon Mirinae brings large waves and punishing rain to the eastern Philippines.

(CNN) -- The fourth typhoon to hit the Philippines in a month came ashore east of the capital, Manila, on Saturday morning, bringing heavy rain, flooding, and washing away shanty houses near the coast.

Typhoon Mirinae quickly moved west into the South China Sea and became a tropical storm. It was forecast to continue due west and then take a slight turn south, hitting Vietnam in about 48 hours, according to the Joint Typhoon Warning Center.

There were power flashes across Manila, as the storm hit Saturday and cut the electricity supply, videographer James Reynolds said. The storm was weaker than expected, he said, but it still brought fierce winds and lots of rain.