Magnitude 5.3 Earthquake Strikes off the Coast of Oregon
A 5.3 tremor was recorded in the early hours of September 6, 2026
A magnitude 5.3 earthquake was recorded off the coast of Oregon on September 6, 2026, at 22:30 (Brasília time). The epicenter was at a depth of 10 km, according to USGS data.
Earthquake technical details
The USGS reported that the tremor had a magnitude of 5.3, a depth of 10 km, and an epicenter located in a maritime zone south of the state of Oregon, in the United States. No impact alert was issued for populated areas.
Tsunami alert
Despite the moderate magnitude, the seismic monitoring service issued a tsunami alert for the coastal region. The alert indicates the need for monitoring by maritime authorities and possible precautionary measures in vulnerable areas.
People who felt the tremor
According to the USGS report, five people reported feeling the tremor. There is no additional information regarding the extent of the shaking or specific locations.
Next monitoring steps
The USGS will continue to observe seismic activity in the region and will update alerts as new data is collected. Local authorities may issue guidance should the tsunami alert evolve.
Scientific context
Seismic events with magnitudes between 5.0 and 5.9 are classified as moderate and can generate noticeable seismic waves in areas near the epicenter. The 10 km depth indicates that the earthquake's focus occurred relatively close to the surface, which can increase the perception of shaking in coastal areas.
Seismic data: USGS.
Source: USGS (United States Geological Survey)