M3.3 earthquake 246 km ESE of Atka, Alaska
A magnitude 3.3 earthquake struck 246 km ESE of Atka, Alaska on Tue, Jan 26, 2021, 12:54 PM HAST (22:54 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M4.0 220 km SSW 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
- 3.3 (ml), minor
- Local time
- UTC
- 2021-01-26 22:54:33 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 51.137° N, 171.075° 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 3.9 km horizontally, 2.0 km in depth
- Magnitude uncertainty
- ±0.12
- Depth from
- Operator assigned
- Station coverage gap
- 239°, poorly surrounded by stations
- Stations used
- 9
Nearby
Within 100 km, magnitude 1.5 and up: 7 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.0220 km SSW of Nikolski, Alaska · 2061 days ago · 10 km deep · 74 km away
- 3.5160 km SW of Nikolski, Alaska · 2048 days ago · 35 km deep · 91 km away
- 3.6155 km SE of Atka, Alaska · 2029 days ago · 23 km deep · 97 km away
- 3.3188 km SW of Nikolski, Alaska · 2027 days ago · 36 km deep · 84 km away
- 3.8182 km ESE of Atka, Alaska · 2022 days ago · 35 km deep · 76 km away
- 2.9177 km SE of Atka, Alaska · 2013 days ago · 25 km deep · 83 km away
- 3.6164 km SW of Nikolski, Alaska · 2009 days ago · 37 km deep · 96 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000de7k. Read Fri, Sep 25, 2026, 4:28 PM UTC.