M2.8 earthquake 193 km S of Adak, Alaska
A magnitude 2.8 earthquake struck 193 km S of Adak, Alaska on Tue, Feb 2, 2021, 3:50 AM HAST (13:50 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M3.3 181 km SSW 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), micro
- Local time
- UTC
- 2021-02-02 13:50:01 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 50.135° N, 176.733° 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 3.6 km horizontally, 2.0 km in depth
- Magnitude uncertainty
- ±0.12
- Depth from
- Operator assigned
- Station coverage gap
- 261°, poorly surrounded by stations
- Stations used
- 22
Nearby
Within 100 km, magnitude 1.5 and up: 3 in the 60 days after this one and 2 in the 30 days before it.
After
- 2.8178 km S of Adak, Alaska · 2044 days ago · 28 km deep · 25 km away
- 3.3181 km SSW of Adak, Alaska · 2037 days ago · 10 km deep · 42 km away
- 2.5165 km SSE of Adak, Alaska · 2026 days ago · 10 km deep · 55 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000dhzh (also filed as ak0211isrt83). Read Sun, Sep 27, 2026, 4:23 AM UTC.