Indonesia’s Southwest Sumba Hit by Magnitude 6.1 Earthquake

Magnitude 6.1 Quake Shakes Southwest Sumba, No Tsunami Warning Issued

Tempatdonasi.com – A magnitude 6.1 earthquake struck waters near Southwest Sumba Regency in East Nusa Tenggara early Sunday, October 4, 2026, shaking communities across parts of the region for about a minute. Initial monitoring found no reports of injuries, deaths, or building damage.

The tremor occurred at 05:55 WIB. Its center was offshore, about 14 kilometers southwest of Kodi in Southwest Sumba, at a shallow depth of 10 kilometers. The recorded coordinates were 9.70 degrees south latitude and 118.92 degrees east longitude.

The epicenter was located at sea, 14 km southwest of Kodi, Southwest Sumba, at a depth of 10 km and coordinates 9.70° S – 118.92° E. The earthquake posed no tsunami threat.

The statement was delivered in Jakarta by Berton SP Panjaitan, Acting Head of the National Disaster Management Agency’s Center for Disaster Data, Information, and Communication.

Shaking Felt Beyond Southwest Sumba

Residents in Southwest Sumba Regency felt strong movement, as did people in West Sumba Regency and West Manggarai Regency. Despite the strength and duration of the shaking, authorities said the public response remained orderly, with no widespread panic reported.

Local disaster management personnel are continuing field checks after the quake. These inspections are important after a shallow offshore earthquake because effects can differ from one village or neighborhood to another, even within the same regency. Officials are assessing conditions on the ground and monitoring for any further developments.

At the time of the initial update, there had been no confirmed indication of casualties or material losses. Residents were asked not to rely on circulating claims that have not been verified and to follow updates issued through official channels.

What Residents Have Been Asked to Do

Authorities advised people to remain calm while staying alert for possible aftershocks. A larger earthquake can be followed by smaller tremors, and people should take practical precautions if shaking returns.

Anyone who notices cracks or other visible signs of damage in a building should avoid entering it until its condition can be assessed. This precaution is especially relevant for structures that may have been weakened by the initial shaking, even if damage is not immediately obvious from outside.

Residents have also been advised to keep away from the coastline for the time being if aftershocks occur. Although no tsunami threat was identified from the magnitude 6.1 event, maintaining awareness near coastal areas can help communities respond more safely if conditions change or if official guidance is updated.

Why Official Information Matters

Earthquakes often lead to fast-moving messages on social media and through private chat groups. In the minutes and hours after a tremor, such information can be incomplete, outdated, or inaccurate. Official notices are particularly important for confirming whether an event has created a tsunami risk, whether emergency assistance is needed, and whether residents should take protective action.

For families in the affected areas, calm preparation can be more useful than speculation. Keeping household members together when possible, identifying a safe open area away from unstable structures, and checking on neighbors who may need help are sensible measures while field monitoring continues.

The earthquake’s offshore location and 10-kilometer depth were key details in the initial assessment. Earthquakes occurring beneath or near the sea do not automatically trigger tsunami conditions; the nature of the movement, depth, location, and impact on the seafloor all affect the risk evaluation. In this case, authorities stated that no tsunami threat was detected.

Monitoring Continues

Disaster management teams in the region remain focused on confirming conditions in communities that experienced the strongest shaking. The absence of early damage and casualty reports is encouraging, but field verification remains necessary after a notable earthquake.

People in Southwest Sumba, West Sumba, and West Manggarai are encouraged to remain attentive to official earthquake and disaster-management announcements, particularly if additional tremors are felt. For now, authorities’ main guidance is straightforward: stay calm, avoid unsafe buildings, keep clear of the coast during any aftershocks, and ignore unverified rumors.