M2.8 earthquake 263 km SW of Adak, Alaska
A magnitude 2.8 earthquake struck 263 km SW of Adak, Alaska on Fri, Aug 22, 2025, 7:26 AM GMT-12 (19:26 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M3.2 275 km SW of Adak, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.8 (ML, local (Richter)), micro
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2025-08-22 19:26:39 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 50.125° N, 179.172° W
- Region
- Alaska
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Magnitude estimates
Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.
| Mag. | Scale | Computed by | Notes |
|---|---|---|---|
| 2.8 | ML, local (Richter) | USGS National Earthquake Information Center | Preferred · Reviewed · ±0.097 · 14 stations |
| 2.6 | ML, local (Richter) | Alaska Earthquake Center | Preliminary |
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 7.2 km horizontally, 2.0 km in depth
- Magnitude uncertainty
- ±0.10
- Depth from
- Operator assigned
- Station coverage gap
- 260°, poorly surrounded by stations
- Stations used
- 20
Nearby
Within 100 km, magnitude 1.5 and up: 2 in the 60 days after this one and 5 in the 30 days before it.
After
- 3.2275 km SW of Adak, Alaska · 403 days ago · 10 km deep · 13 km away
- 2.4249 km SSW of Adak, Alaska · 395 days ago · 12 km deep · 83 km away
Before
- 2.0233 km WSW of Adak, Alaska · 409 days ago · 2 km deep · 93 km away
- 3.9191 km SW of Adak, Alaska · 410 days ago · 10 km deep · 89 km away
- 2.7193 km SSW of Adak, Alaska · 412 days ago · 9 km deep · 80 km away
- 2.8204 km SSW of Adak, Alaska · 424 days ago · 10 km deep · 91 km away
- 2.9246 km SSW of Adak, Alaska · 432 days ago · 10 km deep · 66 km away
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000rjif (also filed as ak025arb83xg). Read Fri, Oct 2, 2026, 7:24 PM UTC.