4.5

M4.5 Earthquake 211 km NE of Santa Cruz das Flores, Portugal — July 11, 2026

2026-07-11 01:33:17 UTC (2 hours ago) · approx. 11:33 PM UTC-2 local

MagnitudeM4.5(mb)
Time01:33 UTC≈ 11:33 PM UTC-2
Depth10.0 kmshallow crustal
Coordinates40.941°, -29.564°
Felt byNo felt reports
Status✓ Reviewed by USGS

On July 11, 2026 at 01:33 UTC, a magnitude 4.5 shallow crustal earthquake struck 211 km NE of Santa Cruz das Flores, Portugal, at a depth of 10.0 km and coordinates 40.9410°, -29.5643°. This earthquake was detected by 30 seismic stations with good location accuracy and was assigned a USGS significance rating of 312, placing it among routine seismic activity.

Physical scale: An earthquake of magnitude 4.5 releases seismic energy equivalent to roughly 85 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 767 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 40.94°, -29.56°

Earthquake Details

Magnitude
4.5 mb
Depth
10.0 km
shallow crustal
Location
40.9410°N
-29.5643°E

Technical Information

Event ID
us7000szm1
Event Type
earthquake
Status
✓ Reviewed
Significance
312
Stations Used
30
Azimuthal Gap
150.0°
Min Station Distance
4.458°
RMS Residual
1.35 sec
Last Updated
2026-07-11 01:57:49 UTC

Common Questions

How strong was the magnitude 4.5 earthquake near Santa Cruz das Flores, Portugal?

The magnitude 4.5 earthquake that struck 211 km NE of Santa Cruz das Flores, Portugal on July 11, 2026 at 01:33 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 40.9410°, -29.5643°, which is 211 km NE of Santa Cruz das Flores, Portugal.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.5 earthquakes can continue for several days 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.

Actions

View on USGSDid You Feel It?

Location

Portugal
View all Portugal earthquakes

Authoritative source: USGS event page (event ID: us7000szm1). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, July 11, 2026). M4.5 Earthquake 211 km NE of Santa Cruz das Flores, Portugal — July 11, 2026. Retrieved July 11, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000szm1/