The nonstop eight - day monsoon rain , strengthened by Typhoon Gener , caused the Marikina River to overflow .
The nonstop eight - day monsoon rain , strengthened by Typhoon Gener , destroyed the same places that were ruined by Typhoon Ondoy in 2009 .
The nonstop eight - day monsoon rain , strengthened by Typhoon Gener , caused the Marikina River to overflow and destroyed the same places that were ruined by Typhoon Ondoy in 2009 .