Alaska earthquakes

M2.8 earthquake 202 km SSW of Atka, Alaska

A magnitude 2.8 earthquake struck 202 km SSW of Atka, Alaska on Sun, Feb 11, 2024, 11:01 PM HAST (09:01 UTC), 6 km (3 mi) below the surface.

A larger quake followed: M3.9 191 km S of Adak, Alaska. This one was a foreshock.

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

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The earthquake

Magnitude
2.8 (ML, local (Richter)), micro
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2024-02-12 09:01:43 UTC
Depth
5.6 km (3.5 mi), shallow
Epicenter
50.425° N, 174.850° W
Region
Alaska
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.ScaleComputed byNotes
2.8ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.115 · 10 stations
2.6ML, local (Richter)Alaska Earthquake CenterPreliminary

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 9.9 km horizontally, 12.5 km in depth
Magnitude uncertainty
±0.12
Depth from
From location
Station coverage gap
242°, poorly surrounded by stations
Stations used
14

Nearby

Within 100 km, magnitude 1.5 and up: 16 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 2.7172 km S of Atka, Alaska · 957 days ago · 10 km deep · 80 km away
  2. 3.1110 km SSW of Atka, Alaska · 957 days ago · 10 km deep · 95 km away
  3. 3.6115 km SSW of Atka, Alaska · 957 days ago · 10 km deep · 89 km away
  4. 3.1192 km SE of Adak, Alaska · 947 days ago · 10 km deep · 12 km away
  5. 2.9177 km S of Atka, Alaska · 941 days ago · 10 km deep · 50 km away
  6. 3.9191 km S of Adak, Alaska · 935 days ago · 10 km deep · 98 km away
  7. 3.0205 km S of Atka, Alaska · 929 days ago · 10 km deep · 20 km away
  8. 3.0164 km S of Atka, Alaska · 926 days ago · 10 km deep · 69 km away
  9. 2.4174 km SE of Adak, Alaska · 925 days ago · 10 km deep · 30 km away
  10. 2.6184 km S of Adak, Alaska · 925 days ago · 10 km deep · 100 km away
  11. 2.5172 km SSE of Adak, Alaska · 924 days ago · 10 km deep · 81 km away
  12. 3.3129 km SSW of Atka, Alaska · 922 days ago · 10 km deep · 82 km away
  13. 2.8208 km S of Atka, Alaska · 919 days ago · 19 km deep · 55 km away
  14. 2.1103 km S of Atka, Alaska · 918 days ago · 0 km deep · 100 km away
  15. 3.0106 km S of Atka, Alaska · 910 days ago · 35 km deep · 97 km away
  16. 2.2120 km SSW of Atka, Alaska · 906 days ago · 2 km deep · 83 km away

Before

  1. 2.4142 km S of Atka, Alaska · 963 days ago · 6 km deep · 68 km away
  2. 2.9112 km SSW of Atka, Alaska · 965 days ago · 10 km deep · 93 km away
  3. 2.8195 km SE of Adak, Alaska · 971 days ago · 10 km deep · 9 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000mg75 (also filed as ak0241z9h4u3). Read Thu, Oct 1, 2026, 7:27 AM UTC.