Typhoon Ketsana, known in the Philippines as Tropical Storm Ondoy, was the second-most devastating tropical cyclone of the 2009 Pacific typhoon season, causing $1.09 billion in damages and 747 fatalities, only behind Morakot earlier in the season, which caused 789 deaths and damages worth $6.2 billion. Ketsana was the sixteenth tropical storm, and the eighth typhoon of the season. It was the most devastating typhoon to hit Manila,[1] surpassing Typhoon Patsy (Yoling) in 1970.