M5.2 Earthquake 148 km SSE of Lajes das Flores, Portugal — September 23, 2025
2025-09-23 06:25:26 UTC (2025-09-23) · approx. 4:25 AM UTC-2 local
On September 23, 2025 at 06:25 UTC, a magnitude 5.2 shallow crustal earthquake struck 148 km SSE of Lajes das Flores, Portugal, at a depth of 10.0 km and coordinates 38.0774°, -30.7808°. This earthquake was detected by 135 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 416, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 5.2 releases seismic energy equivalent to roughly 951 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 2.3 km — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-30.7808°E
Technical Information
Common Questions
How strong was the magnitude 5.2 earthquake near Lajes das Flores, Portugal?
The magnitude 5.2 earthquake that struck 148 km SSE of Lajes das Flores, Portugal on September 23, 2025 at 06:25 UTC had a depth of 10.0 km. For context, this was a moderate earthquake that could be widely felt.
Where did the earthquake occur?
The earthquake epicenter was located at 38.0774°, -30.7808°, which is 148 km SSE of Lajes das Flores, Portugal.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.2 earthquakes can continue for days to weeks and gradually diminish over time.
What should I do after an earthquake?
If you were in the affected area: check yourself and others for injuries, inspect your home for damage, and be prepared for aftershocks. For detailed guidance, see our earthquake safety guide and emergency planning resources.
Authoritative source: USGS event page (event ID: us6000rc8i). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, September 23, 2025). M5.2 Earthquake 148 km SSE of Lajes das Flores, Portugal — September 23, 2025. Retrieved May 28, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000rc8i/