M4.1 earthquake 75 km SE of Adak, Alaska
A magnitude 4.1 earthquake struck 75 km SE of Adak, Alaska on Sat, Aug 23, 1997, 1:46 AM HADT (10:46 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.2 87 km E of Adak, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.1 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1997-08-23 10:46:33 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 51.316° N, 176.021° 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: 6 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.646 km SSW of Adak, Alaska · 10622 days ago · 33 km deep · 60 km away
- 4.061 km E of Adak, Alaska · 10614 days ago · 53 km deep · 73 km away
- 4.271 km SSW of Adak, Alaska · 10608 days ago · 33 km deep · 65 km away
- 4.555 km SSE of Adak, Alaska · 10606 days ago · 33 km deep · 20 km away
- 4.986 km WSW of Atka, Alaska · 10601 days ago · 56 km deep · 77 km away
- 5.287 km E of Adak, Alaska · 10590 days ago · 62 km deep · 74 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00086mc. Read Fri, Oct 2, 2026, 2:23 AM UTC.