M4.7 Earthquake 127 km ENE of Santa Cruz das Flores, Portugal — July 21, 2026
2026-07-21 18:16:39 UTC (2026-07-21) · approx. 4:16 PM UTC-2 local
On July 21, 2026 at 18:16 UTC, a magnitude 4.7 shallow crustal earthquake struck 127 km ENE of Santa Cruz das Flores, Portugal, at a depth of 10.0 km and coordinates 39.7728°, -29.6970°. This earthquake was detected by 54 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 340, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.7 releases seismic energy equivalent to roughly 169 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.1 km — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-29.6970°E
Technical Information
Common Questions
How strong was the magnitude 4.7 earthquake near Santa Cruz das Flores, Portugal?
The magnitude 4.7 earthquake that struck 127 km ENE of Santa Cruz das Flores, Portugal on July 21, 2026 at 18:16 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 39.7728°, -29.6970°, which is 127 km ENE of Santa Cruz das Flores, Portugal.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.7 earthquakes can continue for several days and gradually diminish over time.
Authoritative source: USGS event page (event ID: us7000t2e7). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, July 21, 2026). M4.7 Earthquake 127 km ENE of Santa Cruz das Flores, Portugal — July 21, 2026. Retrieved August 5, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000t2e7/