M4.8 Earthquake 77 km N of Namuac, Philippines — August 16, 2024
2024-08-16 23:56:45 UTC (2024-08-16) · approx. 7:56 AM UTC+8 local
On August 16, 2024 at 23:56 UTC, a magnitude 4.8 shallow crustal earthquake struck 77 km N of Namuac, Philippines, at a depth of 37.0 km and coordinates 19.3135°, 121.1272°. This earthquake was detected by 104 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 354, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.8 releases seismic energy equivalent to roughly 239 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.2 km — a useful intuition for the size of the slip patch on the fault.
The epicenter is located in Philippines, a region characterized by the Manila Trench and Philippine Trench subduction systems, where the Philippine Sea Plate overrides the Eurasian Plate. The nearest mapped fault system is the Philippine Fault. View all earthquakes in Philippines.
Learn more: Magnitude scale · Aftershock sequences
Earthquake Details
121.1272°E
Technical Information
Common Questions
How strong was the magnitude 4.8 earthquake near Namuac, Philippines?
The magnitude 4.8 earthquake that struck 77 km N of Namuac, Philippines on August 16, 2024 at 23:56 UTC had a depth of 37.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 19.3135°, 121.1272°, which is 77 km N of Namuac, Philippines. View all earthquakes in Philippines.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.8 earthquakes can continue for several days and gradually diminish over time.
Has Philippines had earthquakes this big before?
The largest recorded earthquake in Philippines was the M8.0 Mindanao earthquake of August 17, 1976. Today's magnitude 4.8 event is significantly smaller than that historical record.
Authoritative source: USGS event page (event ID: us7000n7j5). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2024, August 16, 2024). M4.8 Earthquake 77 km N of Namuac, Philippines — August 16, 2024. Retrieved October 26, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000n7j5/