M2.3 earthquake 238 km SSW of Adak, Alaska
A magnitude 2.3 earthquake struck 238 km SSW of Adak, Alaska on Thu, Nov 18, 2021, 11:29 PM HAST (09:29 UTC), 35 km (22 mi) below the surface.
A larger quake followed: M3.3 188 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
- 2.3 (ml), micro
- Local time
- UTC
- 2021-11-19 09:29:32 UTC
- Depth
- 35.1 km (21.8 mi), shallow
- Epicenter
- 49.999° N, 178.270° 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.
- Stations used
- 20
Nearby
Within 100 km, magnitude 1.5 and up: 4 in the 60 days after this one and 3 in the 30 days before it.
After
- 3.3188 km SSW of Adak, Alaska · 1749 days ago · 31 km deep · 51 km away
- 3.1178 km SSW of Adak, Alaska · 1741 days ago · 10 km deep · 71 km away
- 2.7213 km SSW of Adak, Alaska · 1720 days ago · 10 km deep · 72 km away
- 4.0Andreanof Isl., Aleutian Islands, Alaska · 1718 days ago · 10 km deep · 92 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event ak021euc4a7o. Read Thu, Sep 24, 2026, 10:10 AM UTC.