NORTH SUMATRA / RankWire.AI / – Seismic activity off the coast of Indonesia’s North Sumatra province has once again underscored the region’s vulnerability to tectonic shifts. On Tuesday, a magnitude 6.1 earthquake struck the area, causing tremors in various communities across parts of Sumatra. The quake was recorded at 1:02:23 p.m. western Indonesian time, or 06:02:23 UTC. According to official data, its epicenter was located in the sea, approximately 147 kilometers southeast of South Nias Regency. The quake’s depth was measured at 29 kilometers, originating beneath waters west of Sumatra.
Indonesia’s Meteorology, Climatology and Geophysics Agency, known as BMKG, pinpointed the quake at 0.65 degrees south latitude and 98.32 degrees east longitude. Data on its intensity indicated that North Tapanuli experienced the strongest shaking, with residents feeling an intensity IV. Several areas in West Sumatra, including Padang, Padang Pariaman, Pariaman, West Pasaman, and Agam, also reported noticeable tremors. The affected communities spanned across multiple regions, highlighting the widespread reach of the seismic event.
Reports from residents across other parts of Sumatra confirmed feeling the tremors following the magnitude 6.1 quake. The National Disaster Mitigation Agency, or BNPB, clarified that this seismic event posed no tsunami threat. People in South Nias experienced weak shaking lasting about three to five seconds. Emergency agencies began monitoring the situation in affected areas immediately after the tremor, though the initial national bulletin did not report any casualties or damages.
Authorities Confirm No Tsunami Risk
Official intensity records showed that shaking reached levels III to IV in Padang, Padang Pariaman, Pariaman, West Pasaman, and Agam. In Padang Sidempuan, Subulussalam, and South Nias, the intensity was registered at III. Padang Panjang and Central Tapanuli experienced intensity II to III, while Gunungsitoli recorded intensity II. These readings demonstrate that the earthquake was felt across several provinces, although the reported shaking levels varied depending on the location.
Authorities urged the public to remain calm and base their responses on official earthquake updates. They recommended inspecting buildings and homes for any cracks or damage and advised moving to open spaces if another strong earthquake occurs. Additionally, officials emphasized that those near coastal areas should stay away from beaches following strong aftershocks, as part of the safety measures issued in the aftermath of the seismic event.
Monitoring Continues Following Offshore Seismic Activity
The latest official earthquake reports on Wednesday confirmed the event near South Nias persisted at magnitude 6.1 with a depth of 29 kilometers. The epicenter remained at 147 kilometers southeast of South Nias. No tsunami warning had been issued based on the most recent information. Local disaster response teams continued their post-quake assessments to evaluate any impacts on communities affected by the tremors.
The earthquake occurred on August 18, as residents across western Indonesia received alerts and reports concerning the offshore seismic event. Officials persisted in guiding the public toward verified earthquake information and local safety protocols. People in affected zones were advised to avoid damaged structures and stay alert for additional tremors. Confirmed reports continue to classify the event as a magnitude 6.1 offshore earthquake with no tsunami threat.