Indonesia: Magnitude-5.8 offshore earthquake occurs south of Batu Islands at around 00:09 WIB April 23

Event

A magnitude-5.8 offshore earthquake occurred south of Indonesia's Batu Islands, between the Batu Islands and Siberut, at around 00:09 WIB April 23. The epicenter was about 171 km (106 miles) south-southeast of Teluk Dalam, Indonesia. The tremor occurred at a depth of about 27 km (16 miles), and light-to-moderate shaking was probably felt in parts of the Batu Islands and Siberut. There have been no initial reports of damage or casualties as a result of the earthquake; significant damage is unlikely. It could take several hours until authorities can conduct comprehensive damage assessments, especially in remote areas. Aftershocks are likely over the coming days. The event has not prompted any tsunami advisories.

Officials may temporarily shut down transportation infrastructure in the tremor zone to check for damage. Minor disruptions could occur during shutdowns, but service will likely resume quickly if no damage is found. Utility outages are possible where shaking occurred.

Advice

Plan accordingly for aftershocks. Consider vacating multistory buildings if operating in affected areas until authorities confirm their structural integrity. Allow additional time for air and road travel, as aftershocks may prompt brief disruptions. Seek updated information on road conditions before driving in hilly areas in the affected region due to potential landslides.