M4.6 Earthquake 260 km NE of Santa Cruz das Flores, Portugal — November 18, 2024
2024-11-18 15:00:24 UTC (2024-11-18) · approx. 1:00 PM UTC-2 local
On November 18, 2024 at 15:00 UTC, a magnitude 4.6 shallow crustal earthquake struck 260 km NE of Santa Cruz das Flores, Portugal, at a depth of 10.0 km and coordinates 41.3433°, -29.3110°. This earthquake was detected by 29 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.
Earthquake Details
-29.3110°E
Technical Information
Common Questions
How strong was the magnitude 4.6 earthquake near Santa Cruz das Flores, Portugal?
The magnitude 4.6 earthquake that struck 260 km NE of Santa Cruz das Flores, Portugal on November 18, 2024 at 15:00 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 41.3433°, -29.3110°, which is 260 km NE of Santa Cruz das Flores, 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: us7000nvvd). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2024, November 18, 2024). M4.6 Earthquake 260 km NE of Santa Cruz das Flores, Portugal — November 18, 2024. Retrieved January 30, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000nvvd/