USGS · September 21, 2026
Magnitude 3.8 earthquake 166 km S of Akhiok, Alaska
A magnitude 3.8 earthquake was recorded near 166 km S of Akhiok, Alaska on Sep 21, 2026, 10:26 AM (local time at the epicentre — AKDT, UTC-8), at a depth of about 57.2 km, according to USGS.
USGSShaking IShallow (0–70 km)Automatic solution — subject to revision
Updated 2026-09-21 20:17 UTC
The full record
- Magnitude
- M 3.8 · local (Richter) magnitude
- Location
- 166 km S of Akhiok, Alaska
- Local time at the epicentre
- Sep 21, 2026, 10:26 AM — AKDT, UTC-8
- Time (UTC)
- 2026-09-21 18:26 UTC
- Depth
- 57.2 km · Shallow (0–70 km)
- Coordinates
- 55.453, -154.044
- Felt reports
- No “Did You Feel It?” reports submitted
- Estimated shaking
- I · Not felt
- Tsunami
- No tsunami evaluation was flagged for this earthquake.
- Significance
- 222 / 1000 · routine event
- Solution quality
- 119 seismic stations used · 215° azimuthal gap (less well-constrained epicentre)
- Review status
- Automatic solution — subject to revision
- 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 I (Not felt): Not felt except by a very few under especially favourable conditions.
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, in Alaska.
Other earthquakes near this epicentre
2 other events within 100 km in the last 30 days.
Be first to know about the next earthquake near 166 km S of Akhiok, Alaska
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Frequently asked questions
How strong was the 166 km S of Akhiok, Alaska earthquake?
Magnitude 3.8 (local (Richter) magnitude), at a depth of 57.2 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?
Sep 21, 2026, 10:26 AM (local time at the epicentre — AKDT, UTC-8). In universal time: 2026-09-21 18:26 UTC.
Was it felt?
No “Did You Feel It?” reports were submitted for this event. Not felt except by a very few under especially favourable conditions.
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 7.0 (164 km SE of Chignik, Alaska, 1989), and 2 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), in Venezuela FUNVISIS and in Brazil the RSBR through the Centro de Sismologia da USP. Populated places and time zones: GeoNames (CC BY 4.0). Preliminary solutions are revised as more observations arrive.