M6.1 Earthquake Hits North Sumatra, No Tsunami Threat
BMKG said that the 6.1-magnitude tectonic earthquake in South Nias, North Sumatra, on Tuesday was caused by subduction activity.
On Tuesday at 13:02:23 WIB, a 6.1-magnitude tectonic earthquake struck South Nias in North Sumatra, according to the Meteorology, Climatology, and Geophysics Agency (BMKG). Dr. Wijayanto, the BMKG Director for Earthquake and Tsunami, revealed that the quake occurred at a depth of 35 km and had its epicenter at 0.67 degrees south latitude and 98.29 degrees east longitude, situated in the sea 157 km southeast of Nias.
Tsunami modeling results indicated that the earthquake posed no tsunami threat. The shallow nature of the quake, coupled with the source mechanism analysis of thrust faulting, contributed to this assessment. Public reports suggested that the earthquake was felt with varying intensities across different regions. In North Tapanuli, it was experienced at intensity IV MMI, causing some damage to homes.
In Padang Sidempuan, South Nias, Padang Panjang, and other areas, it was felt at intensity III MMI, while Central Tapanuli and Gunung Sitoli reported feeling at intensity II MMI. As of 13:30 WIB, no aftershock activity had been detected. BMKG will continue to monitor aftershock activity and inform stakeholders and the public accordingly, advising the public to remain calm and avoid damaged buildings.
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