The Philippine Institute of Volcanology and Seismology (PHIVOLCS) has lifted the tsunami warning that was issued following the magnitude 7.8 offshore earthquake that struck near Sarangani on June 8.
PHIVOLCS announced the cancellation of the warning at 3:19 p.m. after continuous monitoring showed that the tsunami generated by the earthquake resulted only in minor sea level fluctuations that posed no significant threat to coastal communities.
According to the agency, the first tsunami waves were recorded at several monitoring points across Mindanao and nearby coastal areas:
Recorded Tsunami Wave Arrivals
- Maasim, Sarangani – 7:42 a.m. (0.48 meters)
- Kiamba, Sarangani – 7:44 a.m. (1.48 meters)
- Kalamansig, Sultan Kudarat – 7:59 a.m. (0.84 meters)
- Mati City, Davao Oriental – 8:19 a.m. (0.21 meters)
- Zamboanga City, Zamboanga del Sur – 8:32 a.m. (0.25 meters)
- Tandag City, Surigao del Sur – 8:45 a.m. (0.09 meters)
PHIVOLCS explained that although slight sea level variations continued to be observed after the initial wave arrivals, the disturbances remained too small to cause damage to coastal infrastructure or communities.
Based on these observations, the agency determined that the tsunami threat had passed and formally lifted the warning.
Despite the cancellation, PHIVOLCS urged residents in coastal areas to remain alert, particularly because aftershocks may still occur following a major earthquake.
The agency also reminded the public to watch for natural indicators of a possible tsunami, including:
- Strong or prolonged ground shaking
- A sudden rise or drop in sea level
- Unusual roaring or rumbling sounds coming from the ocean
PHIVOLCS advised that anyone who observes these warning signs should immediately evacuate to higher ground and follow the instructions of local authorities to ensure their safety.