M5.2 Earthquake 148 km ENE of Masohi, Indonesia — July 23, 2025
2025-07-23 08:25:29 UTC (2025-07-23) · approx. 5:25 PM UTC+9 local
Maximum shaking intensity MMI 4.9 (moderate).
On July 23, 2025 at 08:25 UTC, a magnitude 5.2 shallow crustal earthquake struck 148 km ENE of Masohi, Indonesia, at a depth of 10.0 km and coordinates -2.9867°, 130.2673°. The USGS PAGER system issued a green alert level for this event, indicating no significant casualties or damage expected. This earthquake was detected by 101 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 416, placing it among routine seismic activity. The nearest populated place is Bula (population 0).
Physical scale: An earthquake of magnitude 5.2 releases seismic energy equivalent to roughly 951 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 2.3 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
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 | 359,815 |
| MMI 4 | light | 126,638 |
| MMI 5 | moderate | 12,100 |
Earthquake Details
130.2673°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 5.2 earthquake near Masohi, Indonesia?
The magnitude 5.2 earthquake that struck 148 km ENE of Masohi, Indonesia on July 23, 2025 at 08:25 UTC had a depth of 10.0 km. For context, this was a moderate earthquake that could be widely felt.
Where did the earthquake occur?
The earthquake epicenter was located at -2.9867°, 130.2673°, which is 148 km ENE of Masohi, Indonesia. The nearest populated place is Bula (population 0). View all earthquakes in Indonesia.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.2 earthquakes can continue for days to weeks 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 5.2 event is significantly smaller than that historical record.
Authoritative source: USGS event page (event ID: us6000qubl). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, July 23, 2025). M5.2 Earthquake 148 km ENE of Masohi, Indonesia — July 23, 2025. Retrieved October 11, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000qubl/