NASA and Japanese authorities did predict the volume of rain was gonna be comparable to the rainfall during Ondoy.
NASA predicted 'Ondoy-like' rains for 'Sendong' | ABS-CBN News | Latest Philippine Headlines, Breaking News, Video, Analysis, Features
Unfortunately, Yumul and PAGASA did not take heed.
Japan-US forecasts said:
"very heavy rainfall of over 50mm/hr (~2 inches).”
PAGASA's NDRRMC forecast said:
only a 10-25 mm per hour rainfall amount for Sendong.
there is a huge discrepancy. precaution and awareness could have saved lives in this calamity.
there is enough blame to go around for everyone in this one. Apil na nah ang mga local authorities anah. However, unya na nah, importante ani run ang relief jud.