Alaska earthquakes

M2.1 earthquake 242 km SW of Adak, Alaska

A magnitude 2.1 earthquake struck 242 km SW of Adak, Alaska on Sat, Jul 24, 2021, 5:22 AM HADT (14:22 UTC), 11 km (7 mi) below the surface.

A larger quake followed: M3.4 219 km SSW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude
2.1 (ml), micro
Local time
UTC
2021-07-24 14:22:24 UTC
Depth
10.6 km (6.6 mi), shallow
Epicenter
50.083° N, 178.602° 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
23

Nearby

Within 100 km, magnitude 1.5 and up: 9 in the 60 days after this one and 2 in the 30 days before it.

After

  1. 3.4219 km SSW of Adak, Alaska · 1886 days ago · 43 km deep · 71 km away
  2. 1.9176 km SSW of Adak, Alaska · 1883 days ago · 26 km deep · 67 km away
  3. 1.9211 km SSW of Adak, Alaska · 1882 days ago · 26 km deep · 34 km away
  4. 2.5168 km SSW of Adak, Alaska · 1880 days ago · 10 km deep · 76 km away
  5. 2.1226 km SSW of Adak, Alaska · 1876 days ago · 20 km deep · 53 km away
  6. 3.4200 km SSW of Adak, Alaska · 1862 days ago · 10 km deep · 95 km away
  7. 2.1186 km SSW of Adak, Alaska · 1860 days ago · 26 km deep · 70 km away
  8. 2.8239 km SSW of Adak, Alaska · 1847 days ago · 10 km deep · 11 km away
  9. 3.4204 km SSW of Adak, Alaska · 1835 days ago · 10 km deep · 47 km away

Before

  1. 1.9254 km SW of Adak, Alaska · 1899 days ago · 27 km deep · 26 km away
  2. 2.9262 km SW of Adak, Alaska · 1909 days ago · 10 km deep · 50 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0219f9mzcb. Read Thu, Sep 24, 2026, 3:41 PM UTC.