M4.4 Earthquake 5 km E of San Isidro, Philippines — September 30, 2025
2025-09-30 17:30:55 UTC (2025-09-30) · approx. 1:30 AM UTC+8 local
On September 30, 2025 at 17:30 UTC, a magnitude 4.4 shallow crustal earthquake struck 5 km E of San Isidro, Philippines, at a depth of 10.0 km and coordinates 11.4114°, 124.4013°.
Physical scale: An earthquake of magnitude 4.4 releases seismic energy equivalent to roughly 60 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 655 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
124.4013°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.4 earthquake near San Isidro, Philippines?
The magnitude 4.4 earthquake that struck 5 km E of San Isidro, Philippines on September 30, 2025 at 17:30 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.4 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.4 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000rips). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, September 30, 2025). M4.4 Earthquake 5 km E of San Isidro, Philippines — September 30, 2025. Retrieved December 11, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000rips/