M4.3 Earthquake 43 km ESE of Jovellar, Philippines — November 20, 2021
2021-11-20 14:35:30 UTC (2021-11-20) · approx. 10:35 PM UTC+8 local
On November 20, 2021 at 14:35 UTC, a magnitude 4.3 intermediate depth earthquake struck 43 km ESE of Jovellar, Philippines, at a depth of 85.7 km and coordinates 6.8773°, 126.7974°.
Physical scale: An earthquake of magnitude 4.3 releases seismic energy equivalent to roughly 43 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 558 m — a useful intuition for the size of the slip patch on the fault.
This earthquake is part of an ongoing aftershock sequence following the magnitude 5.0 mainshock that occurred 27 days ago 44 km SE of Lukatan, Philippines. Since the mainshock, the USGS has recorded 1 aftershocks in this area. Aftershock activity is expected to continue for days to weeks as stresses on surrounding faults redistribute.
Earthquake Details
126.7974°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.3 earthquake near Jovellar, Philippines?
The magnitude 4.3 earthquake that struck 43 km ESE of Jovellar, Philippines on November 20, 2021 at 14:35 UTC had a depth of 85.7 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 4.3 earthquakes can continue for several days and gradually diminish over time.
Is this the same earthquake as the M5.0 one earlier?
No. This magnitude 4.3 earthquake is an aftershock of the larger magnitude 5.0 mainshock that occurred earlier 44 km SE of Lukatan, Philippines. Aftershocks are smaller earthquakes triggered by stress changes from the mainshock.
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Understanding This Data
Magnitude 4.3 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000fvsj). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, November 20, 2021). M4.3 Earthquake 43 km ESE of Jovellar, Philippines — November 20, 2021. Retrieved January 29, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000fvsj/