Alaska earthquakes

M4.2 earthquake 196 km WSW of Adak, Alaska

A magnitude 4.2 earthquake struck 196 km WSW of Adak, Alaska on Thu, May 1, 1997, 12:47 AM HADT (09:47 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M6.4 195 km WSW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude
4.2 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1997-05-01 09:47:47 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
51.218° N, 179.270° 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.

Depth from
OPERATOR_ASSIGNED

Nearby

Within 100 km, magnitude 1.5 and up: 8 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 4.5179 km W of Adak, Alaska · 10735 days ago · 33 km deep · 76 km away
  2. 3.5176 km WSW of Adak, Alaska · 10705 days ago · 33 km deep · 35 km away
  3. 4.0240 km WSW of Adak, Alaska · 10701 days ago · 33 km deep · 52 km away
  4. 4.2260 km WSW of Adak, Alaska · 10701 days ago · 62 km deep · 74 km away
  5. 6.4195 km WSW of Adak, Alaska · 10698 days ago · 33 km deep · 15 km away
  6. 4.6196 km WSW of Adak, Alaska · 10697 days ago · 33 km deep · 11 km away
  7. 5.1127 km WSW of Adak, Alaska · 10693 days ago · 33 km deep · 71 km away
  8. 4.1195 km WSW of Adak, Alaska · 10687 days ago · 33 km deep · 2 km away

Before

  1. 4.4243 km WSW of Adak, Alaska · 10745 days ago · 33 km deep · 56 km away
  2. 4.9184 km WSW of Adak, Alaska · 10745 days ago · 33 km deep · 12 km away
  3. 4.4194 km WSW of Adak, Alaska · 10746 days ago · 33 km deep · 3 km away
  4. 3.8193 km WSW of Adak, Alaska · 10746 days ago · 33 km deep · 6 km away
  5. 4.6252 km W of Adak, Alaska · 10760 days ago · 68 km deep · 83 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp00081js. Read Thu, Oct 1, 2026, 5:45 PM UTC.