M4.3 Earthquake 187 km SSW of Lajes das Flores, Portugal — March 31, 2025
2025-03-31 16:50:37 UTC (2025-03-31) · approx. 2:50 PM UTC-2 local
On March 31, 2025 at 16:50 UTC, a magnitude 4.3 shallow crustal earthquake struck 187 km SSW of Lajes das Flores, Portugal, at a depth of 10.0 km and coordinates 37.8503°, -32.0902°.
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.
Earthquake Details
-32.0902°E
Technical Information
Common Questions
How strong was the magnitude 4.3 earthquake near Lajes das Flores, Portugal?
The magnitude 4.3 earthquake that struck 187 km SSW of Lajes das Flores, Portugal on March 31, 2025 at 16:50 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 4.3 earthquakes can continue for several days and gradually diminish over time.
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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: us6000q56d). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, March 31, 2025). M4.3 Earthquake 187 km SSW of Lajes das Flores, Portugal — March 31, 2025. Retrieved June 6, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000q56d/