M3.1 earthquake 111 km N of Nikolski, Alaska
A magnitude 3.1 earthquake struck 111 km N of Nikolski, Alaska on Sat, Aug 30, 2025, 12:59 AM AKDT (08:59 UTC), 88 km (55 mi) below the surface.
A larger quake followed: M3.8 38 km NNE of Nikolski, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.1 (ml), minor
- Local time
- UTC
- 2025-08-30 08:59:45 UTC
- Depth
- 88.1 km (54.7 mi), intermediate-depth
- Epicenter
- 53.921° N, 168.565° W
- Region
- Alaska
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 11.0 km horizontally, 25.1 km in depth
- Magnitude uncertainty
- ±0.12
- Depth from
- From location
- Station coverage gap
- 226°, poorly surrounded by stations
- Stations used
- 11
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 4 in the 60 days after this one and 7 in the 30 days before it.
After
- 3.0112 km N of Nikolski, Alaska · 396 days ago · 101 km deep · 4 km away
- 2.593 km WSW of Unalaska, Alaska · 395 days ago · 100 km deep · 67 km away
- 3.838 km NNE of Nikolski, Alaska · 385 days ago · 94 km deep · 76 km away
- 1.753 km SW of Unalaska, Alaska · 367 days ago · 15 km deep · 97 km away
Before
- 2.850 km N of Nikolski, Alaska · 399 days ago · 17 km deep · 63 km away
- 1.554 km SW of Unalaska, Alaska · 408 days ago · 16 km deep · 100 km away
- 3.469 km NE of Nikolski, Alaska · 409 days ago · 121 km deep · 63 km away
- 1.876 km SW of Unalaska, Alaska · 417 days ago · 18 km deep · 94 km away
- 1.960 km NE of Nikolski, Alaska · 421 days ago · 71 km deep · 76 km away
- 1.574 km SW of Unalaska, Alaska · 422 days ago · 13 km deep · 87 km away
- 2.046 km WSW of Dutch Harbor, Alaska · 424 days ago · 112 km deep · 90 km away
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000rmud (also filed as ak025b4d66xl). Read Wed, Sep 30, 2026, 4:34 AM UTC.