Alaska earthquakes

M2.3 earthquake 30 km SSW of Tanana, Alaska

A magnitude 2.3 earthquake struck 30 km SSW of Tanana, Alaska on Mon, Mar 15, 2021, 8:35 PM AKDT (04:35 UTC), 6 km (3 mi) below the surface.

A larger quake followed: M4.3 40 km SSW of Tanana, Alaska. This one was a foreshock.

Healy forecastMore in Alaska

Map

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

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The earthquake

Magnitude
2.3 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2021-03-16 04:35:36 UTC
Depth
5.6 km (3.5 mi), shallow
Epicenter
64.908° N, 152.248° 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
2.3ML, local (Richter)Alaska Earthquake CenterPreferred · Preliminary
2.5ML, local (Richter)USGS National Earthquake Information CenterReviewed · ±0.044 · 68 stations

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
41

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 15 in the 60 days after this one and 10 in the 30 days before it.

After

  1. 2.030 km SSW of Tanana, Alaska · 2028 days ago · 12 km deep · 1 km away
  2. 1.658 km SSE of Tanana, Alaska · 2028 days ago · 14 km deep · 38 km away
  3. 1.666 km WNW of Tanana, Alaska · 2016 days ago · 12 km deep · 77 km away
  4. 1.768 km NNE of Tanana, Alaska · 2007 days ago · 8 km deep · 98 km away
  5. 2.866 km NW of Lake Minchumina, Alaska · 1990 days ago · 14 km deep · 79 km away
  6. 1.753 km SSW of Manley Hot Springs, Alaska · 1990 days ago · 15 km deep · 61 km away
  7. 2.364 km WNW of Tanana, Alaska · 1986 days ago · 10 km deep · 74 km away
  8. 1.533 km SSE of Tanana, Alaska · 1983 days ago · 0 km deep · 23 km away
  9. 4.340 km SSW of Tanana, Alaska · 1983 days ago · 19 km deep · 11 km away · felt by 6
  10. 2.343 km SSW of Tanana, Alaska · 1983 days ago · 9 km deep · 13 km away · felt by 1
  11. 1.745 km SSW of Tanana, Alaska · 1983 days ago · 0 km deep · 16 km away
  12. 1.945 km SSW of Tanana, Alaska · 1983 days ago · 4 km deep · 16 km away
  13. 1.545 km SSW of Tanana, Alaska · 1982 days ago · 13 km deep · 15 km away
  14. 2.665 km ENE of Ruby, Alaska · 1980 days ago · 13 km deep · 91 km away
  15. 2.866 km ENE of Ruby, Alaska · 1980 days ago · 10 km deep · 92 km away

Before

  1. 2.746 km SSW of Tanana, Alaska · 2035 days ago · 18 km deep · 17 km away · felt by 1
  2. 1.666 km SW of Tanana, Alaska · 2035 days ago · 12 km deep · 46 km away
  3. 2.823 km E of Manley Hot Springs, Alaska · 2045 days ago · 14 km deep · 100 km away
  4. 1.865 km NNE of Tanana, Alaska · 2051 days ago · 9 km deep · 96 km away
  5. 1.552 km SSW of Manley Hot Springs, Alaska · 2052 days ago · 13 km deep · 61 km away
  6. 2.180 km W of Tanana, Alaska · 2054 days ago · 11 km deep · 81 km away
  7. 1.983 km W of Tanana, Alaska · 2054 days ago · 11 km deep · 83 km away
  8. 1.982 km W of Tanana, Alaska · 2055 days ago · 6 km deep · 83 km away
  9. 1.581 km W of Tanana, Alaska · 2056 days ago · 8 km deep · 82 km away
  10. 1.680 km W of Tanana, Alaska · 2056 days ago · 8 km deep · 82 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0213g3wcke (also filed as us7000djnu). Read Sun, Oct 4, 2026, 8:56 AM UTC.