M4.2 Earthquake 180 km NE of Santa Cruz das Flores, Portugal — January 22, 2024
2024-01-22 23:11:28 UTC (2024-01-22) · approx. 9:11 PM UTC-2 local
On January 22, 2024 at 23:11 UTC, a magnitude 4.2 shallow crustal earthquake struck 180 km NE of Santa Cruz das Flores, Portugal, at a depth of 10.0 km and coordinates 40.5952°, -29.6260°.
Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-29.6260°E
Technical Information
Common Questions
How strong was the magnitude 4.2 earthquake near Santa Cruz das Flores, Portugal?
The magnitude 4.2 earthquake that struck 180 km NE of Santa Cruz das Flores, Portugal on January 22, 2024 at 23:11 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 4.2 earthquakes can continue for several days and gradually diminish over time.
Actions
Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000lu3f). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2024, January 22, 2024). M4.2 Earthquake 180 km NE of Santa Cruz das Flores, Portugal — January 22, 2024. Retrieved March 30, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000lu3f/