USGS · October 23, 2026
Magnitude 3.7 earthquake 40 km SSE of Nikolski, Alaska
A magnitude 3.7 earthquake was recorded near 40 km SSE of Nikolski, Alaska on Oct 23, 2026, 01:18 AM (local time at the epicentre — AKDT, UTC-8), at a depth of about 131.1 km, according to USGS.
USGSShaking IIntermediate (70–300 km)Reviewed by a seismologist
Updated 2026-10-23 19:28 UTC
The full record
- Magnitude
- M 3.7 · local (Richter) magnitude
- Location
- 40 km SSE of Nikolski, Alaska
- Local time at the epicentre
- Oct 23, 2026, 01:18 AM — AKDT, UTC-8
- Time (UTC)
- 2026-10-23 09:18 UTC
- Depth
- 131.1 km · Intermediate (70–300 km)
- Coordinates
- 52.597, -168.655
- Felt reports
- No “Did You Feel It?” reports submitted
- Estimated shaking
- I · Not felt
- Tsunami
- No tsunami evaluation was flagged for this earthquake.
- Significance
- 211 / 1000 · routine event
- Solution quality
- 56 seismic stations used · 209° azimuthal gap (less 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
At this depth the energy spreads out before it reaches the surface, so shaking is usually weaker but felt over a wider area.
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
No earthquake of magnitude 4.5+ has been recorded within 200 km of this epicentre since 1960, in Alaska.
Other earthquakes near this epicentre
10 other events within 100 km in the last 30 days.
M 3.7 123 km SSW of Nikolski, AlaskaShaking II
M 3.2 115 km SSW of Nikolski, Alaska
M 4.7 114 km SSW of Nikolski, AlaskaShaking II
M 3.1 88 km SSW of Nikolski, Alaska
M 3.1 113 km SSW of Nikolski, Alaska
M 4.0 92 km SSW of Nikolski, AlaskaShaking II
M 3.1 100 km SE of Nikolski, Alaska
M 3.0 92 km SE of Nikolski, Alaska
M 3.7 116 km ESE of Nikolski, AlaskaShaking I
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Frequently asked questions
How strong was the 40 km SSE of Nikolski, Alaska earthquake?
Magnitude 3.7 (local (Richter) magnitude), at a depth of 131.1 km. At this depth the energy spreads out before it reaches the surface, so shaking is usually weaker but felt over a wider area.
Exactly when did it happen?
Oct 23, 2026, 01:18 AM (local time at the epicentre — AKDT, UTC-8). In universal time: 2026-10-23 09:18 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?
10 further events were recorded within 100 km of the epicentre 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.