Alaska earthquakes

M3.8 earthquake 272 km WSW of Adak, Alaska

A magnitude 3.8 earthquake struck 272 km WSW of Adak, Alaska on Thu, Mar 8, 1973, 11:21 PM GMT+12 (11:21 UTC), 38 km (24 mi) below the surface.

A larger quake followed: M4.9 196 km WSW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude
3.8 (mb), minor
Local time
UTC
1973-03-08 11:21:47 UTC
Depth
38.0 km (23.6 mi), shallow
Epicenter
51.206° N, 179.586° E
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
9

Nearby

Within 100 km, magnitude 1.5 and up: 7 in the 60 days after this one and 2 in the 30 days before it.

After

  1. 4.9196 km WSW of Adak, Alaska · 19548 days ago · 40 km deep · 82 km away
  2. 4.2209 km WSW of Adak, Alaska · 19548 days ago · 51 km deep · 72 km away
  3. 3.8224 km W of Adak, Alaska · 19528 days ago · 111 km deep · 67 km away
  4. 3.9263 km WSW of Adak, Alaska · 19523 days ago · 66 km deep · 28 km away
  5. 4.8237 km WSW of Adak, Alaska · 19517 days ago · 54 km deep · 41 km away
  6. 4.0248 km WSW of Adak, Alaska · 19517 days ago · 45 km deep · 45 km away
  7. 4.1248 km WSW of Adak, Alaska · 19517 days ago · 42 km deep · 39 km away

Before

  1. 4.3183 km WSW of Adak, Alaska · 19570 days ago · 47 km deep · 89 km away
  2. 5.4192 km WSW of Adak, Alaska · 19585 days ago · 46 km deep · 84 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp00000vf. Read Tue, Sep 29, 2026, 7:03 AM UTC.