Alaska earthquakes

M4.3 earthquake 167 km W of Adak, Alaska

A magnitude 4.3 earthquake struck 167 km W of Adak, Alaska on Wed, Jul 16, 1997, 9:43 AM HADT (18:43 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M4.9 Andreanof Islands, Aleutian Islands, Alaska. This one was a foreshock.

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

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The earthquake

Magnitude
4.3 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1997-07-16 18:43:32 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
51.847° N, 179.059° 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 11 in the 30 days before it.

After

  1. 4.1175 km WSW of Adak, Alaska · 10667 days ago · 33 km deep · 78 km away
  2. 4.8185 km WSW of Adak, Alaska · 10660 days ago · 33 km deep · 55 km away
  3. 4.1145 km WSW of Adak, Alaska · 10659 days ago · 33 km deep · 74 km away
  4. 3.9141 km WSW of Adak, Alaska · 10628 days ago · 33 km deep · 72 km away
  5. 4.1134 km WSW of Adak, Alaska · 10624 days ago · 33 km deep · 61 km away
  6. 4.7139 km SW of Adak, Alaska · 10622 days ago · 33 km deep · 91 km away
  7. 4.3224 km WSW of Adak, Alaska · 10619 days ago · 60 km deep · 79 km away
  8. 4.9Andreanof Islands, Aleutian Islands, Alaska · 10609 days ago · 53 km deep · 59 km away

Before

  1. 4.1152 km WSW of Adak, Alaska · 10669 days ago · 33 km deep · 64 km away
  2. 4.7189 km WSW of Adak, Alaska · 10675 days ago · 33 km deep · 59 km away
  3. 3.4187 km WSW of Adak, Alaska · 10676 days ago · 33 km deep · 65 km away
  4. 4.5140 km WSW of Adak, Alaska · 10676 days ago · 33 km deep · 60 km away
  5. 5.9146 km WSW of Adak, Alaska · 10677 days ago · 33 km deep · 62 km away
  6. 5.1144 km WSW of Adak, Alaska · 10681 days ago · 33 km deep · 58 km away
  7. 4.8198 km WSW of Adak, Alaska · 10682 days ago · 33 km deep · 54 km away
  8. 4.1195 km WSW of Adak, Alaska · 10687 days ago · 33 km deep · 72 km away
  9. 5.1127 km WSW of Adak, Alaska · 10693 days ago · 33 km deep · 54 km away
  10. 4.6196 km WSW of Adak, Alaska · 10697 days ago · 33 km deep · 62 km away
  11. 6.4195 km WSW of Adak, Alaska · 10698 days ago · 33 km deep · 59 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp00084y6. Read Thu, Oct 1, 2026, 11:23 AM UTC.