M3.8 earthquake 175 km SSE of Atka, Alaska
A magnitude 3.8 earthquake struck 175 km SSE of Atka, Alaska on Sat, Nov 22, 2025, 4:13 AM HAST (14:13 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M4.1 84 km SE 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
- 3.8 (mb, body-wave), minor
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2025-11-22 14:13:12 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 50.752° N, 173.182° W
- Region
- Alaska
- Strongest shaking
- I, not felt shaking
- 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 |
|---|---|---|---|
| 3.8 | mb, body-wave | USGS National Earthquake Information Center | Preferred · Reviewed · ±0.228 · 5 stations |
| 4.0 | ML, local (Richter) | Alaska Earthquake Center | Reviewed · ±0.1 · 18 stations |
Shaking
The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.
- Strongest estimated
- I, not felt shaking
- Peak ground acceleration
- 0.0% of gravity
- Peak ground velocity
- 0.0 cm/s
- Map
- Automatic
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 6.3 km horizontally, 2.0 km in depth
- Magnitude uncertainty
- ±0.23
- Depth from
- Operator assigned
- Station coverage gap
- 233°, poorly surrounded by stations
- Stations used
- 16
Nearby
Within 100 km, magnitude 1.5 and up: 12 in the 60 days after this one and 1 in the 30 days before it.
After
- 2.3149 km S of Atka, Alaska · 296 days ago · 10 km deep · 64 km away
- 3.3140 km SE of Atka, Alaska · 293 days ago · 10 km deep · 69 km away
- 2.6171 km S of Atka, Alaska · 289 days ago · 10 km deep · 57 km away
- 2.9154 km S of Atka, Alaska · 288 days ago · 10 km deep · 72 km away
- 3.2123 km SE of Atka, Alaska · 288 days ago · 35 km deep · 75 km away
- 2.9210 km S of Atka, Alaska · 286 days ago · 10 km deep · 90 km away
- 3.3201 km S of Atka, Alaska · 275 days ago · 0 km deep · 78 km away
- 3.099 km SE of Atka, Alaska · 274 days ago · 2 km deep · 96 km away
- 3.691 km SE of Atka, Alaska · 269 days ago · 9 km deep · 100 km away
- 4.184 km SE of Atka, Alaska · 261 days ago · 32 km deep · 96 km away
- 3.194 km SE of Atka, Alaska · 258 days ago · 10 km deep · 89 km away
- 3.3213 km SE of Atka, Alaska · 257 days ago · 10 km deep · 73 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000rtxw (also filed as ak2025wzrhkn). Read Fri, Oct 2, 2026, 11:50 AM UTC.