The Mines and Geosciences Bureau (MGB) Region X has identified 289 barangays across Bukidnon as susceptible to rain-induced landslides and flooding ahead of the expected landfall of Typhoon Tino (international name: Kalmaegi), the Office of Civil Defense (OCD) said.
The latest geohazard advisory, issued at 2 a.m. on November 2, was based on the 72-hour rainfall forecast of the Philippine Atmospheric, Geophysical and Astronomical Services Administration (Pagasa) using the Global Spectral Model (GSM) and Weather Research and Forecasting (WRF) model, with projected rainfall accumulation of up to 50 millimeters.
The MGB said the list supersedes earlier advisories but remains subject to change as new data emerge.
It also warned that areas not included in the list but located near or downstream of high-risk zones may still experience runoff and debris flow.
Towns with barangays classified under Very High Landslide (VHL) and Very High Flooding (VHF) categories include Valencia City, Impasug-ong, Quezon, Malitbog and Manolo Fortich – areas forecast to receive intense rainfall within the monitoring period.
In Valencia City, at least 15 barangays-including Banlag, Dagat-Kidavao, Guinoyuran, Kahapunan, Lumbayao, Sinabuagan, and Vintar-were listed under multiple hazard categories.
Barangay Banlag was flagged under all risk levels, including VHL, HL (High Landslide), ML (Moderate Landslide), DF (Debris Flow), VHF, HF (High Flooding), and MF (Moderate Flooding).
The upland town of Impasug-ong also recorded several barangays under very high landslide risk, such as Bulonay, Hagpa and Kalabugao, while Quezon’s Lumintao and Kipaypayon were listed under both very high landslide and flooding categories.
According to the MGB, areas with VHL classification have steep, unstable slopes with a history of soil movement, where heavy rainfall can easily trigger landslides.
HL areas are those with steep terrain or disturbed slopes highly prone to collapse during continuous rain, while ML zones may experience landslides only under prolonged or extreme rainfall.
DF areas, meanwhile, are vulnerable to sudden flows of mud, rocks, and logs along gullies and rivers.
For flooding, VHF areas are low-lying communities near river channels at risk of deep, fast-moving inundation, while HF zones are floodplains or riverbanks that may overflow during storms.
MF areas experience shallow or temporary flooding that can still damage crops and small structures.
The OCD and MGB urged local disaster risk reduction and management councils to conduct preemptive evacuations, monitor rainfall levels, and issue timely warnings to residents in vulnerable areas.
‘Even if your barangay is not listed, but you are near riverbanks or foot slopes, stay alert. Water and debris will naturally flow to lower grounds,’ the MGB’s Geohazards Operations Center said.
Authorities also reminded the public to prepare emergency kits, monitor radio and social media updates, and avoid crossing rivers or mountain roads during heavy rain.
Residents are warned of possible flash floods and landslides in areas experiencing moderate to heavy rainfall, particularly across the Visayas and Northern Mindanao, including Bukidnon.