SORSOGON CITY, Sorsogon – Local authorities here are ramping up information dissemination to protect communities surrounding Bulusan Volcano, emphasizing the life-saving importance of disaster preparedness as the Bulusan Volcano remains under Alert Level 1.
Resident volcanologist April Dominguiano highlighted that educating the public on the risks of trekking an active volcano is the first line of defense.
According to Dominguiano, understanding potential hazards allows residents and hikers to prepare effectively and avoid the lethal threats associated with volcanic activity.
During Holy Week and summer months (March to April), hikers and pilgrims have a massive interest in climbing mountains as they treat this activity as a form of penance or spiritual reflection and as a window of exploration.
Dominguiano said that Phivolcs recognizes the local beliefs and their purposes, however, they urge hikers to skip from volcano treks during this time for safety.
“We wanted to extend our help in understanding our volcanoes, but we strictly enforce danger zones to prevent mass casualties in the event of a sudden eruption,” she said.
Known for its sudden steam-driven or phreatic eruptions, Bulusan is among the most active volcanoes in the Philippines.
According to Phivolcs, looking at the ground deformation, there is inflation or swelling in the western and southeastern sectors of Bulusan starting January and March 2026, respectively.
Based on the current seismicity and ground deformation, it would take months of observation again to lower the alert level..
Historically speaking, the weak volcanic earthquakes recorded recently are generally similar to those recorded before an eruption. This is also one of the reasons why the Alert Level 1 over Mt. Bulusan was raised.
To mitigate risks, a strict 4-kilometer radius Permanent Danger Zone (PDZ) remains in effect.
“This zone serves as a critical buffer against hot ash, volcanic gas, and “ballistic projectiles”—large rocks ejected during steam-driven explosions,” she said.
Additionally, a 2-kilometer Extended Danger Zone (EDZ) is currently active on the volcano’s southeastern sector.
This affects Brgy. Patag and Mapaso in Irosin, as well as Brgy. San Roque in Bulusan.
Dominguiano reiterated that Local Government Units (LGUs) are advised to strictly prohibit entry into the 4km PDZ and maintain high vigilance within the 2km EDZ.
Officials warned that the area remains vulnerable to several volcanic hazards, including Pyroclastic Density Currents (PDC) (hot, fast-moving flows of gas and debris) Ashfall and Rockfalls Ballistic Projectiles and Avalanches.
Residents are urged to stay informed through official channels and adhere to safety protocols to ensure community resilience against sudden eruptions.
“Being prepared is the best way to combat any disaster,” said Dominguiano.
Source: PIA Sorsogon