Alaska earthquakes

M4.5 earthquake 140 km WSW of Adak, Alaska

A magnitude 4.5 earthquake struck 140 km WSW of Adak, Alaska on Tue, Jul 8, 1997, 3:00 PM HADT (00:00 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M4.8 185 km WSW of Adak, 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
4.5 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1997-07-09 00:00:05 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
51.425° N, 178.524° 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: 13 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 3.4187 km WSW of Adak, Alaska · 10676 days ago · 33 km deep · 47 km away
  2. 4.7189 km WSW of Adak, Alaska · 10675 days ago · 33 km deep · 50 km away
  3. 4.1152 km WSW of Adak, Alaska · 10669 days ago · 33 km deep · 14 km away
  4. 4.3167 km W of Adak, Alaska · 10669 days ago · 33 km deep · 60 km away
  5. 4.1175 km WSW of Adak, Alaska · 10667 days ago · 33 km deep · 39 km away
  6. 4.8185 km WSW of Adak, Alaska · 10660 days ago · 33 km deep · 46 km away
  7. 4.1145 km WSW of Adak, Alaska · 10659 days ago · 33 km deep · 16 km away
  8. 3.9141 km WSW of Adak, Alaska · 10628 days ago · 33 km deep · 13 km away
  9. 4.492 km SW of Adak, Alaska · 10628 days ago · 33 km deep · 62 km away
  10. 4.1134 km WSW of Adak, Alaska · 10624 days ago · 33 km deep · 5 km away
  11. 4.582 km SW of Adak, Alaska · 10622 days ago · 33 km deep · 62 km away
  12. 4.7139 km SW of Adak, Alaska · 10622 days ago · 33 km deep · 32 km away
  13. 4.3224 km WSW of Adak, Alaska · 10619 days ago · 60 km deep · 85 km away

Before

  1. 5.9146 km WSW of Adak, Alaska · 10677 days ago · 33 km deep · 7 km away
  2. 5.1144 km WSW of Adak, Alaska · 10681 days ago · 33 km deep · 4 km away
  3. 4.8198 km WSW of Adak, Alaska · 10682 days ago · 33 km deep · 61 km away
  4. 4.1195 km WSW of Adak, Alaska · 10687 days ago · 33 km deep · 55 km away
  5. 5.1127 km WSW of Adak, Alaska · 10693 days ago · 33 km deep · 18 km away
  6. 4.6196 km WSW of Adak, Alaska · 10697 days ago · 33 km deep · 57 km away
  7. 6.4195 km WSW of Adak, Alaska · 10698 days ago · 33 km deep · 57 km away
  8. 3.5176 km WSW of Adak, Alaska · 10704 days ago · 33 km deep · 43 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp00084jy. Read Thu, Oct 1, 2026, 12:26 PM UTC.