Alaska earthquakes

M3.1 earthquake 233 km SSE of False Pass, Alaska

A magnitude 3.1 earthquake struck 233 km SSE of False Pass, Alaska on Tue, Feb 21, 2017, 11:43 AM AKST (20:43 UTC), 2 km (1 mi) below the surface.

A larger quake followed: M4.2 167 km S of False Pass, Alaska. This one was a foreshock.

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Map

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

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The earthquake

Magnitude
3.1 (ML, local (Richter)), minor
Magnitude from
Alaska Earthquake Center
Local time
UTC
2017-02-21 20:43:51 UTC
Depth
2.0 km (1.2 mi), shallow
Epicenter
52.850° N, 162.366° 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

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 18 in the 60 days after this one and 4 in the 30 days before it.

After

  1. 4.2167 km S of False Pass, Alaska · 3497 days ago · 14 km deep · 90 km away
  2. 2.8205 km SSE of King Cove, Alaska · 3496 days ago · 29 km deep · 83 km away
  3. 3.0162 km S of False Pass, Alaska · 3491 days ago · 31 km deep · 100 km away
  4. 2.6159 km S of False Pass, Alaska · 3490 days ago · 42 km deep · 99 km away
  5. 4.2226 km SSE of King Cove, Alaska · 3488 days ago · 10 km deep · 91 km away
  6. 2.7218 km SE of Akutan, Alaska · 3486 days ago · 10 km deep · 96 km away
  7. 2.3155 km S of False Pass, Alaska · 3484 days ago · 14 km deep · 95 km away
  8. 3.0244 km SSE of False Pass, Alaska · 3484 days ago · 18 km deep · 37 km away
  9. 2.4south of Alaska · 3482 days ago · 6 km deep · 64 km away
  10. 2.5178 km S of King Cove, Alaska · 3482 days ago · 14 km deep · 74 km away
  11. 3.7147 km SSE of False Pass, Alaska · 3468 days ago · 24 km deep · 86 km away
  12. 2.8140 km SSE of False Pass, Alaska · 3468 days ago · 25 km deep · 93 km away
  13. 3.2218 km SSE of False Pass, Alaska · 3464 days ago · 10 km deep · 18 km away
  14. 2.4185 km SE of Akutan, Alaska · 3462 days ago · 31 km deep · 83 km away
  15. 2.3154 km S of False Pass, Alaska · 3458 days ago · 37 km deep · 95 km away
  16. 2.8157 km S of False Pass, Alaska · 3455 days ago · 10 km deep · 95 km away
  17. 2.9214 km SE of Akutan, Alaska · 3454 days ago · 10 km deep · 66 km away
  18. 3.6161 km S of False Pass, Alaska · 3451 days ago · 11 km deep · 77 km away

Before

  1. 3.4145 km S of False Pass, Alaska · 3516 days ago · 39 km deep · 96 km away
  2. 3.2228 km S of False Pass, Alaska · 3516 days ago · 23 km deep · 31 km away
  3. 3.6209 km S of False Pass, Alaska · 3521 days ago · 36 km deep · 59 km away
  4. 3.1223 km S of False Pass, Alaska · 3525 days ago · 15 km deep · 46 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0172ec41kn (also filed as ak15419697). Read Fri, Oct 2, 2026, 2:41 PM UTC.