DENR deploys tech networks for real-time El Niño monitoring

The Department of Environment and Natural Resources (DENR) reported Tuesday that it has deployed early warning systems in several regions to monitor the potential effects of a strong El Niño.

The agency has operationalized an early warning framework that uses Automated Weather Stations (AWS), satellite-based heat stress mapping, and Geographic Information System (GIS)-based risk modeling to mitigate environmental hazards, marine degradation, forest fires, and water resource stress caused by rising temperatures associated with the weather phenomenon.

“In an era of accelerating climate extremes, timely information saves ecosystems and lives,” DENR Secretary Juan Miguel Cuna said.

“By deploying satellite-based heat stress tracking for coral reefs in Aurora, processing Automated Weather Station data to map fire hazards in the Agusan Marsh, and running Red Flag alert systems in Region 1, the DENR is replacing reactive measures with precision early warning,” he added.

Regional monitoring efforts

The DENR has established an integrated Red Flag Alert System in Region 1, using 10 strategic ranger stations equipped with lookout towers to detect early signs of wildland fires in the Ilocos Region.

The agency said the system is directly linked to the Department of Science and Technology-Philippine Atmospheric, Geophysical and Astronomical Services Administration (DOST-PAGASA) and local Disaster Risk Reduction and Management Offices (DRRMOs).

Meanwhile, in Region 3, the DENR issued successive Coral Bleaching Alert Updates in May, June, and July 2026 following satellite-derived sea surface temperature (SST) heat stress analysis.

The analysis uses data from DOST-PAGASA and the National Oceanic and Atmospheric Administration (NOAA).

The DENR Central Luzon has directed its provincial offices in Aurora, Bataan, and Zambales to conduct field monitoring of coral reefs and immediately report bleaching incidents through the Philippine Coral Reef Bleaching Report Portal.

In the Bicol Region, DENR offices in Catanduanes and Masbate monitored Automated Weather Stations daily to map dry forest patches, drying creeks, shallow reefs, and emerging water stress conditions. The data are intended to support localized drought advisories and water conservation measures in agricultural and coastal barangays.

In the Caraga Region in Mindanao, the DENR reported that the Protected Area Management Office (PAMO) of the Agusan Marsh Wildlife Sanctuary uses AWS data to continuously monitor localized heat indices, rainfall deficits, and water level changes.

The agency said real-time data allow PAMO officers to generate high-resolution peatland fire risk maps and deploy targeted patrols to areas at high risk.

The DENR also reminded regional offices to maintain AWS facilities to ensure continuous data transmission, while marine monitoring teams were instructed to submit weekly reef assessment logs to the national portal.

The agency said environmental monitoring data would continue to support local drought preparedness, water-use efficiency initiatives, and climate adaptation measures.