USGS · September 11, 2026
Magnitude 5.3 earthquake — 151 km WSW of Adak, Alaska
A magnitude 5.3 earthquake was recorded near 151 km WSW of Adak, Alaska on Sep 11, 2026, 10:47 AM (local time at the epicentre — UTC), at a depth of about 40.9 km, according to USGS.
USGSShaking VTsunami flaggedShallow (0–70 km)Reviewed by a seismologist
Updated 2026-09-11 12:15 UTC
The full record
- Magnitude
- M 5.3 · body-wave magnitude
- Location
- 151 km WSW of Adak, Alaska
- Local time at the epicentre
- Sep 11, 2026, 10:47 AM — UTC
- Time (UTC)
- 2026-09-11 10:47 UTC
- Depth
- 40.9 km · Shallow (0–70 km)
- Coordinates
- 51.213, -178.543
- Felt reports
- No “Did You Feel It?” reports submitted
- Estimated shaking
- V · Moderate
- Tsunami
- Flagged for tsunami evaluation by the responsible warning centre.
- Significance
- 432 / 1000 · notable event
- Solution quality
- 107 seismic stations used · 127° azimuthal gap (well-constrained epicentre)
- Review status
- Reviewed by a seismologist
- Catalog
- USGS
Epicentre and nearby recent earthquakes
The highlighted circle is this earthquake. Smaller circles are other events recorded nearby in the last 30 days.
What the shaking was like
Shallow earthquakes release their energy close to the surface, so they are felt more strongly nearby than a deeper earthquake of the same magnitude.
Estimated instrumental shaking V (Moderate): Felt by nearly everyone; unstable objects overturn and some plaster cracks.
Felt it yourself? USGS collects first-hand reports through “Did You Feel It?”, and those reports are what produce the community intensity above.
Who lives nearby
No populated places over 1,000 inhabitants are listed within 100 km of the epicentre.
Earthquake history in this area
12 earthquakes of magnitude 4.5+ have been recorded within 200 km of this epicentre since 1960.
Other earthquakes near this epicentre
No other earthquakes have been recorded within 100 km in the last 30 days.
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Frequently asked questions
How strong was the 151 km WSW of Adak, Alaska earthquake?
Magnitude 5.3 (body-wave magnitude), at a depth of 40.9 km. Shallow earthquakes release their energy close to the surface, so they are felt more strongly nearby than a deeper earthquake of the same magnitude.
Exactly when did it happen?
Sep 11, 2026, 10:47 AM (local time at the epicentre — UTC). In universal time: 2026-09-11 10:47 UTC.
Was it felt?
No “Did You Feel It?” reports were submitted for this event. Felt by nearly everyone; unstable objects overturn and some plaster cracks.
Was there a tsunami warning?
Flagged for tsunami evaluation by the responsible warning centre.
Which towns are closest to the epicentre?
No populated places over 1,000 inhabitants lie within 100 km of the epicentre.
Are earthquakes normal in this area?
Yes. The largest earthquake recorded within 200 km since 1960 was magnitude 8.7 (1965 Western Aleutian Islands (Hawadax/Rat Islands) Earthquake, 1965), and 0 further events were recorded within 100 km in the last 30 days.
How do I get alerts for the next earthquake here?
Install the free SeismoWatch Android app, draw a box over this area, set a minimum magnitude, and turn alerts on.
About this page
Event data: U.S. Geological Survey (USGS), the European-Mediterranean Seismological Centre (EMSC) and, in Venezuela, FUNVISIS. Populated places and time zones: GeoNames (CC BY 4.0). Preliminary solutions are revised as more observations arrive.