PHIVOLCS stated that the volcano Mount Pinatubo, located near the earthquake's epicenter, has not shown any anomalous activity. Pinatubo is known for its major eruption in 1991, which may have been related to a major 7.7 magnitude earthquake in 1990. PHIVOLCS added that the earthquake could not trigger an eruption of Pinatubo, explaining that the volcano's magma supply has not sufficiently replenished since 1991 to allow for an eruption.