Triggered by unusually heavy and continuous rains brought about by Tropical Storm Uring
Triggered by three consecutive days of persistent moderate to heavy rains
Triggered by continuous moderate to heavy monsoon rains over Metro Manila
Triggered by record breaking hour rainfall of 1,085.5 mm in Baguio City
Triggered by continuous light to moderate rains brought about by Typhoon Nanang
Triggered by record-breaking hour rainfall of 1,119.0 mm in Surigao and 699.0 mm in Leyte
Triggered by 20 days of persistent moderate to heavy rains brought about by Typhoon Unding, Tropical Storm Violeta, Tropical Depression Winnie and Typhoon Yoyong which also affected Regions 1, 2, 5, CAR, NCR.
Triggered by five days of persistent moderate to heavy rains which is equivalent to almost three months of the area's average annual precipitation.
Triggered by persistent moderate to heavy rains brought by Super Typhoon Reming which also affected Regions 1, 2, 3, 4, 8, CAR, NCR.