DENR-MGB Warns of Flash Floods and Landslides Amid Tropical Storm Dante, Tropical Depression Emong, and Habagat

Strategic Insights -

As the Philippines braces for heavy rains due to Tropical Storm Dante, Tropical Depression Emong, and the enhanced southwest monsoon or habagat, the Department of Environment and Natural Resources-Mines and Geosciences Bureau (DENR-MGB) has issued a report highlighting the risk of flash floods and landslides in various provinces and regions across the country. The report identifies 1,403 barangays in the National Capital Region (NCR), including parts of Quezon City, Manila, Valenzuela, Caloocan, and Pasay, as being susceptible to moderate to high flooding and landslides. The DENR-MGB warned that heavy rainfall in the next three days could trigger flash floods and landslides, especially in vulnerable communities, and urged local government units (LGUs) and residents to be prepared and take necessary precautions.

Key Takeaways:

  • The DENR-MGB has identified 1,403 barangays in the NCR as being susceptible to moderate to high flooding and landslides.
  • These barangays include parts of Quezon City, Manila, Valenzuela, Caloocan, and Pasay, and are situated near rivers, creeks, and hilly terrain.
  • The DENR-MGB has flagged 4,954 barangays in Calabarzon, Central Luzon, Ilocos Region, and the Cordillera Administrative Region as being at risk of landslides and flash floods.
  • Occidental Mindoro, Benguet, Zambales, Antique, and Guimaras are forecast to have the highest number of barangays with over 80 percent of the population expected to experience rainfall in the next three days.
  • The MGB warned that landslides are more likely after heavy rainfall, especially in upland barangays and communities built along slopes or near creeks.
  • LGU officials and residents are urged to prepare 'go bags,' monitor official weather advisories, and avoid crossing flooded roads or staying near unstable slopes.
  • The MGB has released detailed barangay-level risk maps and safety guidelines, accessible via its website and QR codes shared with LGUs.

Statistics:

  • 1,403 barangays in the NCR are identified as being susceptible to moderate to high flooding and landslides ( DENR-MGB report).
  • 4,954 barangays in Calabarzon, Central Luzon, Ilocos Region, and the Cordillera Administrative Region are at risk of landslides and flash floods ( DENR-MGB report).
  • 80 percent of the population in Occidental Mindoro, Benguet, Zambales, Antique, and Guimaras is expected to experience rainfall in the next three days (DENR-MGB report).
  • 150 mm. of rain is expected in some provinces in the country in just three days, enough to trigger flash floods and landslides ( DENR-MGB report).

Sources:

  • Philippine News agency, Manila -- 23 Jul 2025
  • Department of Environment and Natural Resources-Mines and Geosciences Bureau (DENR-MGB) report
  • Philippine Atmospheric, Geophysical, and Astronomical Services Administration (PAGASA) rainfall forecasts
  • Geohazard map
  • NCR areas under threat