M4.6 Earthquake 4 km NNW of Ribeirinha, Portugal — January 19, 2025
2025-01-19 17:51:30 UTC (2025-01-19) · approx. 3:51 PM UTC-2 local
Felt by 1 person across nearby locations.
On January 19, 2025 at 17:51 UTC, a magnitude 4.6 shallow crustal earthquake struck 4 km NNW of Ribeirinha, Portugal, at a depth of 10.0 km and coordinates 38.7000°, -27.2052°. This earthquake was detected by 76 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 326, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.6 releases seismic energy equivalent to roughly 120 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 899 m — a useful intuition for the size of the slip patch on the fault.
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 1 citizen response to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.
Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report
Earthquake Details
-27.2052°E
Technical Information
Common Questions
How strong was the magnitude 4.6 earthquake near Ribeirinha, Portugal?
The magnitude 4.6 earthquake that struck 4 km NNW of Ribeirinha, Portugal on January 19, 2025 at 17:51 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 38.7000°, -27.2052°, which is 4 km NNW of Ribeirinha, Portugal.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.6 earthquakes can continue for several days and gradually diminish over time.
Authoritative source: USGS event page (event ID: us7000p9v8). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, January 19, 2025). M4.6 Earthquake 4 km NNW of Ribeirinha, Portugal — January 19, 2025. Retrieved March 29, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000p9v8/