The Kanlaon Volcano remained under “increased unrest” as the Philippine Institute of Volcanology and Seismology (Phivolcs) reported an increase in seismic activity in its 24-hour monitoring.

Phivolcs detected 19 volcanic earthquakes in the past 24 hours based on its volcano bulletin issued at 8 a.m. on Saturday, June 8.

The recorded seismic activity was higher compared to the 14 volcanic earthquakes detected on June 7.

Meanwhile, Kanlaon remained at Alert Level 2.

Aside from the increase in seismicity, Phivolcs said that the volcano’s edifice is “inflated.” Moreover, Phivolcs noted that the sulfur dioxide emissions were measured at 1,412 tons on June 6.

As it continues to monitor developments at Kanlaon, Phivolcs reminded the public that entry into the four-kilometer radius Permanent Danger Zone (PDZ) remains prohibited. Flying any aircraft close to the volcano is also not allowed.

Phivolcs reminded all concerned of possible hazards such as sudden steam-driven or phreatic eruptions.

On June 7, Phivolcs also issued a lahar advisory after thunderstorms brought moderate to heavy rainfall over portions of Kanlaon Volcano and generated channel-confined volcanic sediment flows or lahars on the southern and western slopes.

With the continued effect of the southwest monsoon or “habagat,” Phivolcs strongly recommended “increased vigilance and readiness” of communities along rivers draining southern Kanlaon.

“These communities and local government units are advised to continually monitor weather conditions and take pre-emptive response measures when heavy rains, the only early warning for lahars, are expected or have begun over the upper slopes of Kanlaon Volcano, for their safety,” Phivolcs said.