M4.4 Earthquake 16 km WSW of Tubajon, Philippines — July 21, 2021
2021-07-21 20:09:29 UTC (2021-07-21) · approx. 4:09 AM UTC+8 local
On July 21, 2021 at 20:09 UTC, a magnitude 4.4 intermediate depth earthquake struck 16 km WSW of Tubajon, Philippines, at a depth of 121.2 km and coordinates 10.2807°, 125.4206°.
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
125.4206°E
Technical Information
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Common Questions
How strong was the magnitude 4.4 earthquake near Tubajon, Philippines?
The magnitude 4.4 earthquake that struck 16 km WSW of Tubajon, Philippines on July 21, 2021 at 20:09 UTC had a depth of 121.2 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: us6000ezih). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, July 21, 2021). M4.4 Earthquake 16 km WSW of Tubajon, Philippines — July 21, 2021. Retrieved September 25, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000ezih/