NORTH SUMATRA / RankWire.AI / – A seismic event measuring 6.1 on the Richter scale struck off the coast of Indonesia’s North Sumatra province on Tuesday, causing tremors felt across various parts of Sumatra. The quake struck precisely at 1:02:23 p.m. western Indonesian time, or 06:02:23 UTC. According to official sources, the epicenter was located in the sea, approximately 147 kilometers southeast of South Nias Regency. The seismic activity reached a depth of 29 kilometers, originating beneath waters west of Sumatra.
The BMKG, Indonesia’s Meteorology, Climatology and Geophysics Agency, pinpointed the quake at 0.65 degrees south latitude and 98.32 degrees east longitude. Data on shaking intensity indicated the strongest impact in North Tapanuli, where residents reported experiencing intensity IV. Several other regions within West Sumatra also noted noticeable tremors. The affected communities extended to Padang, Padang Pariaman, Pariaman, West Pasaman, and Agam.
Reports from residents across different parts of Sumatra confirmed feeling the tremors caused by the magnitude 6.1 quake. The National Disaster Mitigation Agency, or BNPB, clarified that the event posed no tsunami threat. In South Nias, inhabitants experienced weak shaking lasting approximately three to five seconds. Emergency agencies began assessments in the impacted areas shortly after the tremor, although the initial national bulletin did not report any casualties or damages.
Authorities confirm absence of tsunami warning
Intensity levels reached between III and IV in Padang, Padang Pariaman, Pariaman, West Pasaman, and Agam, based on official records. Padang Sidempuan, Subulussalam, and South Nias registered intensity III. Meanwhile, Padang Panjang and Central Tapanuli experienced levels of II to III, with Gunungsitoli recording intensity II. These readings reflect that the earthquake’s effects were felt across several provinces, although the reported shaking intensities varied according to the location.
Authorities have advised residents to stay calm and rely on official updates regarding the earthquake. They also urged the public to inspect their homes and structures for any signs of cracks or damage. If a stronger earthquake occurs, people are advised to move to open areas. Additionally, residents along the coast are encouraged to stay away from beaches following strong aftershocks, as part of safety measures issued in the aftermath of the quake.
Monitoring efforts persist following offshore seismic activity
Official earthquake reports available as of Wednesday confirmed the event in South Nias at magnitude 6.1, with a depth of 29 kilometers. The epicenter remained at the same location, 147 kilometers southeast of South Nias. No tsunami warnings have been issued based on the latest official information. Local disaster response teams continue to monitor the situation closely, aiming to detect any potential impacts on communities affected by the tremors.
The earthquake took place on August 18, during which residents across western Indonesia received alerts and updates about the offshore seismic activity. Officials continued to direct the public to reliable sources for earthquake information and safety instructions. People are advised to avoid structures that might have sustained damage and to remain alert for additional tremors. The confirmed details still classify the incident as a magnitude 6.1 offshore earthquake with no tsunami threat.