M4.4 Earthquake 98 km ESE of San Ignacio, Philippines — November 19, 2021
2021-11-19 20:39:22 UTC (2021-11-19) · approx. 4:39 AM UTC+8 local
On November 19, 2021 at 20:39 UTC, a magnitude 4.4 shallow crustal earthquake struck 98 km ESE of San Ignacio, Philippines, at a depth of 21.4 km and coordinates 6.6806°, 127.2641°.
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
127.2641°E
Technical Information
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Common Questions
How strong was the magnitude 4.4 earthquake near San Ignacio, Philippines?
The magnitude 4.4 earthquake that struck 98 km ESE of San Ignacio, Philippines on November 19, 2021 at 20:39 UTC had a depth of 21.4 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: us7000fwrr). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, November 19, 2021). M4.4 Earthquake 98 km ESE of San Ignacio, Philippines — November 19, 2021. Retrieved January 29, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000fwrr/