Moderate magnitude 4.8 earthquake 44 km northeast of Sumbawa Besar, Indonesia

A magnitude 4.8 earthquake near Sumbawa Besar, Sumbawa Regency, West Nusa Tenggara, Indonesia, was reported only 8 minutes ago by Indonesia's Meteorology, Climatology, and Geophysical Agency, considered the main national agency that monitors seismic activity in Indonesia. The earthquake occurred at a shallow depth of 10. km beneath the epicenter in the morning on Tuesday, April 1st, 2025, at 10:16 am local time. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
A second report was later issued by the German Research Centre for Geosciences (GFZ), which listed it as a magnitude 4.9 earthquake.
Based on the preliminary seismic data, the quake should not have caused any significant damage, but was probably felt by many people as light vibration in the area of the epicenter.
Weak shaking might have been felt in Pototano (pop. 5,000) located 34 km from the epicenter, Sumbawa Besar (pop. 62,800) 44 km away, and Dompu (pop. 55,000) 81 km away.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Bima (pop. 161,400) located 107 km from the epicenter, and Taliwang (pop. 55,300) 112 km away.
VolcanoDiscovery will automatically update magnitude and depth if these change and follow up if other significant news about the quake become available. If you’re in the area, please send us your experience through our reporting mechanism, either online or via our mobile app. This will help us provide more first-hand updates to anyone around the globe who wants to know more about this quake.


Earthquake data:
Date & time: Apr 1, 2025 10:16 am (Makassar time) local time (1 Apr 2025 02:16 GMT)
Magnitude: 4.8
Depth: 10.00 km
Epicenter latitude / longitude: 8.3°S / 117.77°E (Dompu Regency, West Nusa Tenggara, Indonesia)
Primary data source: BMKG
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