M2.6 earthquake 236 km S of Atka, Alaska
A magnitude 2.6 earthquake struck 236 km S of Atka, Alaska on Tue, Dec 16, 2025, 6:55 PM HAST (04:55 UTC), 15 km (9 mi) below the surface.
A larger quake followed: M3.3 201 km S of Atka, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.6 (ML, local (Richter)), micro
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2025-12-17 04:55:40 UTC
- Depth
- 14.8 km (9.2 mi), shallow
- Epicenter
- 50.088° N, 174.620° 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 |
|---|---|---|---|
| 2.6 | ML, local (Richter) | USGS National Earthquake Information Center | Preferred · Reviewed · ±0.128 · 8 stations |
| 3.1 | ML, local (Richter) | Alaska Earthquake Center | Reviewed · ±0.4 · 14 stations |
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 10.4 km horizontally, 9.8 km in depth
- Magnitude uncertainty
- ±0.13
- Depth from
- From location
- Station coverage gap
- 291°, poorly surrounded by stations
- Stations used
- 12
Nearby
Within 100 km, magnitude 1.5 and up: 7 in the 60 days after this one and 3 in the 30 days before it.
After
- 2.6171 km S of Atka, Alaska · 290 days ago · 10 km deep · 78 km away
- 2.9154 km S of Atka, Alaska · 290 days ago · 10 km deep · 85 km away
- 2.9210 km S of Atka, Alaska · 287 days ago · 10 km deep · 36 km away
- 3.2190 km SE of Adak, Alaska · 282 days ago · 32 km deep · 54 km away
- 3.3201 km S of Atka, Alaska · 277 days ago · 0 km deep · 48 km away
- 2.8179 km SE of Adak, Alaska · 260 days ago · 10 km deep · 66 km away
- 3.2191 km SSE of Adak, Alaska · 259 days ago · 20 km deep · 57 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000s8tr (also filed as ak2025ysvzod). Read Sat, Oct 3, 2026, 8:28 PM UTC.