Alaska earthquakes

M1.9 earthquake 52 km NE of Ambler, Alaska

A magnitude 1.9 earthquake struck 52 km NE of Ambler, Alaska on Thu, Apr 22, 2021, 5:00 AM AKDT (13:00 UTC), 4 km (2 mi) below the surface.

A larger quake followed: M3.5 75 km NW of Ambler, 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
1.9 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2021-04-22 13:00:35 UTC
Depth
4.0 km (2.5 mi), shallow
Epicenter
67.423° N, 157.002° 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
73

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 14 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 2.771 km NW of Ambler, Alaska · 1977 days ago · 4 km deep · 83 km away
  2. 3.575 km NW of Ambler, Alaska · 1976 days ago · 0 km deep · 85 km away
  3. 2.877 km NW of Ambler, Alaska · 1975 days ago · 2 km deep · 91 km away
  4. 2.7115 km N of Ambler, Alaska · 1974 days ago · 16 km deep · 84 km away
  5. 2.6115 km N of Ambler, Alaska · 1973 days ago · 8 km deep · 84 km away
  6. 2.0112 km N of Ambler, Alaska · 1973 days ago · 67 km deep · 82 km away
  7. 1.7110 km N of Ambler, Alaska · 1972 days ago · 0 km deep · 78 km away
  8. 2.474 km NW of Ambler, Alaska · 1972 days ago · 34 km deep · 89 km away
  9. 1.8111 km N of Ambler, Alaska · 1972 days ago · 18 km deep · 82 km away
  10. 3.175 km NW of Ambler, Alaska · 1971 days ago · 0 km deep · 85 km away
  11. 3.076 km NW of Ambler, Alaska · 1971 days ago · 2 km deep · 87 km away
  12. 2.532 km NNW of Ambler, Alaska · 1957 days ago · 10 km deep · 48 km away
  13. 1.655 km NNE of Kobuk, Alaska · 1950 days ago · 15 km deep · 35 km away
  14. 2.158 km NNE of Kobuk, Alaska · 1933 days ago · 0 km deep · 37 km away

Before

  1. 1.649 km NNE of Kobuk, Alaska · 1991 days ago · 18 km deep · 25 km away
  2. 2.170 km NW of Ambler, Alaska · 1991 days ago · 7 km deep · 85 km away
  3. 1.559 km NW of Ambler, Alaska · 1999 days ago · 11 km deep · 73 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak02155fxkxb. Read Fri, Oct 2, 2026, 5:53 AM UTC.