M7.4 Earthquake 129 km ESE of Bitung, Indonesia — April 1, 2026
2026-04-01 22:48:13 UTC (2026-04-01) · approx. 6:48 AM UTC+8 local
Felt by 59 people across nearby locations. Maximum shaking intensity MMI 7.9 (severe).
On April 1, 2026 at 22:48 UTC, a magnitude 7.4 shallow crustal earthquake struck 129 km ESE of Bitung, Indonesia, at a depth of 35.0 km and coordinates 1.0931°, 126.2354°. The earthquake was reported felt by 59 peopleacross nearby locations, with a maximum shaking intensity of Modified Mercalli Intensity (MMI) 7.9 (severe). The USGS PAGER system issued a green alert level for this event, indicating no significant casualties or damage expected. This earthquake was detected by 272 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 896, making it one of the more significant events of the week. The nearest populated place is Bitung (population 218,520).
Physical scale: An earthquake of magnitude 7.4 releases seismic energy equivalent to roughly 1.9 megatons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 77 km — a useful intuition for the size of the slip patch on the fault.
The epicenter is located in Indonesia, a region characterized by the convergence of the Indo-Australian, Eurasian, and Philippine Sea plates, forming the Sunda-Banda arc system. The nearest mapped fault system is the Sunda megathrust. View all earthquakes in Indonesia.
Learn more: Magnitude scale · Aftershock sequences
Nearest Populated Places
ShakeMap — predicted shaking intensity
Modeled ground-motion intensity contoured on the Modified Mercalli scale (MMI). Computed by the USGS from the moment-tensor solution and regional ground-motion prediction equations.
Source: U.S. Geological Survey ShakeMap. View interactive ShakeMap on USGS
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 59 citizen responses to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.
Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report
Population exposure (USGS PAGER)
Estimated population that experienced each level of shaking. Based on the USGS PAGER rapid impact assessment, which combines ShakeMap output with global population grids.
| Shaking intensity (MMI) | Description | Population exposed |
|---|---|---|
| MMI 3 | weak | 257,722 |
| MMI 4 | light | 1,989,761 |
| MMI 5 | moderate | 1,735,618 |
| MMI 6 | strong | 412,854 |
Earthquake Details
126.2354°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 7.4 earthquake near Bitung, Indonesia?
The magnitude 7.4 earthquake that struck 129 km ESE of Bitung, Indonesia on April 1, 2026 at 22:48 UTC had a depth of 35.0 km. It was felt by 59 people with maximum shaking intensity of MMI 7.9 (severe). For context, this was a strong earthquake capable of causing significant damage.
Where did the earthquake occur?
The earthquake epicenter was located at 1.0931°, 126.2354°, which is 129 km ESE of Bitung, Indonesia. The nearest populated place is Bitung (population 218,520). View all earthquakes in Indonesia.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 7.4 earthquakes can continue for months to years and gradually diminish over time.
Has Indonesia had earthquakes this big before?
The largest recorded earthquake in Indonesia was the M9.1 Indian Ocean earthquake of December 26, 2004. Today's magnitude 7.4 event is significantly smaller than that historical record.
What should I do after an earthquake?
If you were in the affected area: check yourself and others for injuries, inspect your home for damage, and be prepared for aftershocks. For detailed guidance, see our earthquake safety guide and emergency planning resources.
Authoritative source: USGS event page (event ID: us6000slss). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, April 1, 2026). M7.4 Earthquake 129 km ESE of Bitung, Indonesia — April 1, 2026. Retrieved May 20, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000slss/