Alaska earthquakes

M1.8 earthquake 11 km NW of Mosquito Lake, Alaska

A magnitude 1.8 earthquake struck 11 km NW of Mosquito Lake, Alaska on Fri, May 7, 2021, 7:31 PM AKDT (03:31 UTC), 9 km (6 mi) below the surface.

Automatic solution: the magnitude and location may still be revised.

A larger quake followed: M3.0 35 km WSW of Mud Bay, 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
1.8 (ml), micro
Local time
UTC
2021-05-08 03:31:28 UTC
Depth
9.0 km (5.6 mi), shallow
Epicenter
59.605° N, 136.231° W
Region
Alaska
Tsunami flag
No
Status
Automatic solution, may be revised

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

An automatic solution; a seismologist may revise it.

Stations used
11

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 11 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 2.050 km NNW of Gustavus, Alaska · 1949 days ago · 7 km deep · 88 km away
  2. 1.925 km S of Mud Bay, Alaska · 1948 days ago · 10 km deep · 89 km away
  3. 2.448 km NW of Mosquito Lake, Alaska · 1941 days ago · 0 km deep · 37 km away
  4. 2.149 km NW of Mosquito Lake, Alaska · 1936 days ago · 0 km deep · 38 km away
  5. 3.035 km WSW of Mud Bay, Alaska · 1932 days ago · 1 km deep · 66 km away · felt by 10
  6. 2.164 km SW of Covenant Life, Alaska · 1926 days ago · 6 km deep · 78 km away
  7. 1.973 km WSW of Covenant Life, Alaska · 1925 days ago · 0 km deep · 73 km away
  8. 1.676 km WSW of Mosquito Lake, Alaska · 1920 days ago · 13 km deep · 72 km away
  9. 1.541 km NW of Mosquito Lake, Alaska · 1917 days ago · 0 km deep · 30 km away
  10. 2.023 km ENE of Mosquito Lake, Alaska · 1917 days ago · 1 km deep · 30 km away
  11. 2.056 km WSW of Covenant Life, Alaska · 1914 days ago · 6 km deep · 61 km away · felt by 1

Before

  1. 1.629 km SW of Covenant Life, Alaska · 1974 days ago · 0 km deep · 42 km away
  2. 2.050 km SSW of Covenant Life, Alaska · 1976 days ago · 0 km deep · 69 km away
  3. 1.560 km SW of Covenant Life, Alaska · 1987 days ago · 6 km deep · 71 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0215vqrfeg. Read Wed, Sep 30, 2026, 8:06 PM UTC.