USGS · August 31, 2026
Magnitude 4.5 earthquake — 105 km SSW of Nikolski, Alaska
A magnitude 4.5 earthquake was recorded near 105 km SSW of Nikolski, Alaska on Aug 31, 2026, 11:05 PM (local time at the epicentre — AKDT, UTC-8), at a depth of about 42.2 km, according to USGS.
USGSShaking IIShallow (0–70 km)Reviewed by a seismologist
Updated 2026-09-04 18:15 UTC
The full record
- Magnitude
- M 4.5 · body-wave magnitude
- Location
- 105 km SSW of Nikolski, Alaska
- Local time at the epicentre
- Aug 31, 2026, 11:05 PM — AKDT, UTC-8
- Time (UTC)
- 2026-09-01 07:05 UTC
- Depth
- 42.2 km · Shallow (0–70 km)
- Coordinates
- 52.039, -169.339
- Felt reports
- No “Did You Feel It?” reports submitted
- Estimated shaking
- II · Weak
- Tsunami
- No tsunami evaluation was flagged for this earthquake.
- Significance
- 312 / 1000 · notable event
- Solution quality
- 71 seismic stations used · 180° 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 II (Weak): Felt by a few people at rest, mostly on upper floors.
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
11 earthquakes of magnitude 4.5+ have been recorded within 200 km of this epicentre since 1960, in Alaska.
Other earthquakes near this epicentre
101 other events within 100 km in the last 30 days.
M 4.0 103 km SSW of Nikolski, AlaskaShaking II
M 3.5 87 km SSW of Nikolski, Alaska
M 3.5 108 km S of Nikolski, AlaskaShaking II
M 3.7 113 km S of Nikolski, AlaskaShaking II
M 3.8 100 km SSW of Nikolski, AlaskaShaking II
M 3.1 108 km SSW of Nikolski, Alaska
M 3.9 111 km SSW of Nikolski, AlaskaShaking II
M 3.5 107 km SSW of Nikolski, AlaskaShaking II
M 3.2 113 km SSW of Nikolski, Alaska
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Frequently asked questions
How strong was the 105 km SSW of Nikolski, Alaska earthquake?
Magnitude 4.5 (body-wave magnitude), at a depth of 42.2 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?
Aug 31, 2026, 11:05 PM (local time at the epicentre — AKDT, UTC-8). In universal time: 2026-09-01 07:05 UTC.
Was it felt?
No “Did You Feel It?” reports were submitted for this event. Felt by a few people at rest, mostly on upper floors.
Was there a tsunami warning?
No tsunami evaluation was flagged for this earthquake.
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 7.8 (81 km E of Nikolski, Alaska, 1965), and 101 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.