Alaska earthquakes

M2.6 earthquake 181 km S of Atka, Alaska

A magnitude 2.6 earthquake struck 181 km S of Atka, Alaska on Mon, Mar 15, 2021, 8:40 PM HADT (05:40 UTC), 25 km (16 mi) below the surface.

A larger quake followed: M3.7 131 km SSW of Atka, Alaska. This one was a foreshock.

More in Alaska

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Open the live map with earthquakes

The earthquake

Magnitude
2.6 (ml), micro
Local time
UTC
2021-03-16 05:40:42 UTC
Depth
25.0 km (15.5 mi), shallow
Epicenter
50.594° N, 174.705° 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, 11.6 km in depth
Magnitude uncertainty
±0.13
Depth from
From location
Station coverage gap
237°, poorly surrounded by stations
Stations used
24

Nearby

Within 100 km, magnitude 1.5 and up: 22 in the 60 days after this one and 7 in the 30 days before it.

After

  1. 2.6121 km SSE of Atka, Alaska · 2016 days ago · 35 km deep · 91 km away
  2. 2.3175 km SE of Adak, Alaska · 2014 days ago · 26 km deep · 32 km away
  3. 2.7100 km SSE of Atka, Alaska · 2013 days ago · 35 km deep · 97 km away
  4. 2.3101 km SE of Adak, Alaska · 2011 days ago · 4 km deep · 96 km away
  5. 2.3182 km SE of Adak, Alaska · 2009 days ago · 2 km deep · 22 km away
  6. 1.983 km S of Atka, Alaska · 2008 days ago · 1 km deep · 99 km away
  7. 2.1Andreanof Islands, Aleutian Islands, Alaska · 2005 days ago · 15 km deep · 85 km away
  8. 3.7131 km SSW of Atka, Alaska · 2005 days ago · 24 km deep · 60 km away
  9. 2.6127 km SSW of Atka, Alaska · 2005 days ago · 27 km deep · 67 km away
  10. 2.9Andreanof Islands, Aleutian Islands, Alaska · 2005 days ago · 16 km deep · 63 km away
  11. 1.9123 km SSW of Atka, Alaska · 2004 days ago · 16 km deep · 75 km away
  12. 2.7204 km S of Atka, Alaska · 1998 days ago · 10 km deep · 33 km away
  13. 2.8143 km S of Atka, Alaska · 1997 days ago · 10 km deep · 69 km away
  14. 2.2Andreanof Islands, Aleutian Islands, Alaska · 1997 days ago · 15 km deep · 78 km away
  15. 2.0162 km SE of Adak, Alaska · 1996 days ago · 20 km deep · 37 km away
  16. 2.7121 km S of Atka, Alaska · 1996 days ago · 10 km deep · 63 km away
  17. 2.6115 km S of Atka, Alaska · 1996 days ago · 10 km deep · 70 km away
  18. 2.086 km S of Atka, Alaska · 1989 days ago · 26 km deep · 96 km away
  19. 2.0124 km S of Atka, Alaska · 1987 days ago · 18 km deep · 60 km away
  20. 1.9121 km SSW of Atka, Alaska · 1985 days ago · 8 km deep · 72 km away
  21. 2.5176 km SSE of Adak, Alaska · 1983 days ago · 10 km deep · 42 km away
  22. 1.8119 km SSW of Atka, Alaska · 1975 days ago · 7 km deep · 77 km away

Before

  1. 2.6138 km SSE of Atka, Alaska · 2026 days ago · 23 km deep · 77 km away
  2. 2.2128 km S of Atka, Alaska · 2037 days ago · 7 km deep · 58 km away
  3. 2.3203 km S of Atka, Alaska · 2044 days ago · 10 km deep · 61 km away
  4. 2.9151 km SSE of Atka, Alaska · 2044 days ago · 10 km deep · 75 km away
  5. 1.884 km S of Atka, Alaska · 2045 days ago · 3 km deep · 98 km away
  6. 2.2162 km SE of Adak, Alaska · 2046 days ago · 5 km deep · 35 km away
  7. 2.8208 km SSW of Atka, Alaska · 2047 days ago · 10 km deep · 27 km away

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000e05v (also filed as ak0213g4iuvg). Read Fri, Sep 25, 2026, 3:48 PM UTC.