BMKG Revises Lombok Barat Earthquake to Magnitude 5.0

Lombok Barat — Badan Meteorologi, Klimatologi, dan Geofisika (BMKG) revised its analysis of the earthquake that struck Lombok Barat on Oct. 7, recording a magnitude of 5.0 and a depth of 82 kilometres. The earthquake occurred at 03:15:26 WIB, or 04:15:26 WITA.

The updated epicentre was on land, 14 kilometres southeast of Lombok Barat, at coordinates 8.81° south latitude and 116.16° east longitude. BMKG said the earthquake was not capable of generating a tsunami. The shaking was felt most strongly in Mataram, with reports also recorded in Lombok Tengah, Lombok Timur, Lombok Utara, Sumbawa Barat, Sumbawa, Kuta and Denpasar.

BMKG’s monitoring recorded one aftershock, with a magnitude of 1.3, by 03:45 WIB, or 04:45 WITA. The revised parameters superseded the initial reading of magnitude 5.2 at a depth of 92 kilometres.

The revised depth explains why the shaking travelled widely

For foreign residents and visitors, the practical significance is geographic rather than regulatory: the earthquake was felt across parts of Lombok, Sumbawa and Bali, but BMKG’s modelling found no tsunami threat. The reported intensities ranged from IV–V on the Modified Mercalli Intensity scale in Mataram to II in Denpasar, with Kuta recording II–III.

The earthquake was identified as an intraslab event linked to deformation within the Indo-Australian Plate at a subduction zone, according to BMKG’s analysis as reported by established Indonesian news organisations. No closure, evacuation order or further official action was stated in the reports.

Sources

• BMKG — Indonesia’s meteorology, climatology and geophysics agency
• metrotvnews.com
• jpnn.com
• suarasurabaya.net
• ntb.idntimes.com
• viva.co.id