MANILA, Philippines — Typhoon Fung-wong blew out of the northwestern Philippines on Monday after causing floods, landslides, power outages and at least 18 deaths.

The typhoon weakened into a tropical storm over the South China Sea and was moving northwest toward Taiwan , where it could hit Thursday.

Strong waves crashed against the sea wall in Yilan, Taiwan, on Monday, as Typhoon Fung-wong approached.

I-Hwa Cheng / AFP via Getty Images

Fung-wong lashed the northern Philippines after Typhoon Kalmaegi struck central provinces last week, leaving at least 232 people dead, and later hitting Vietnam , where at least five were killed.

Fung-wong was a super typhoon with maximum sustained winds of 115 mph when it made landfall Sunday in northeastern Aurora province. The 1,100-mile-

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