15 December 2011
Tropical storm Sendong (international name, Washi) made landfall on December 15, 2011 in the southern regions of the country. The recorded 24-hour rainfall in Lumbia station of PAGASA reached 180.9 mm causing the overflow of the Cagayan de Oro River.
Though early warning forecasts were disseminated, the water raging from the mountains was overlooked. Sendong triggered the overflow of the river and the water coming from the highlands which also caused flash floods and landslides that sent mud and logs crashing down on communities traversing and near the river, mountain, and sea. The reported high tide for that day added to the high water level of the floods. The deadly storm killed 1,268 people with 49 others listed as missing. Most of the casualties were from the cities of Cagayan de Oro and Iligan. Those who survived were rendered homeless, seeking shelter in evacuation centers.
Acosta, J. (2011). Building resilience and adaptation. Philippine Daily Inquirer.
NDRRMC. Final Report on the Effects and Emergency Management re Tropical SENDOG (WASHI) Status of Early Recovery Programs in Region X (Cagayan de Oro and Iligan Cities). (2012). NDRRMC.