M4.0 earthquake 61 km E of Adak, Alaska
A magnitude 4.0 earthquake struck 61 km E of Adak, Alaska on Tue, Sep 9, 1997, 3:22 PM HADT (00:22 UTC), 53 km (33 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
- 4.0 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1997-09-10 00:22:09 UTC
- Depth
- 52.6 km (32.7 mi), shallow
- Epicenter
- 51.952° N, 175.742° 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
- FROM_LOCATION
Nearby
Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.555 km SSE of Adak, Alaska · 10606 days ago · 33 km deep · 63 km away
- 4.986 km WSW of Atka, Alaska · 10601 days ago · 56 km deep · 31 km away
- 5.287 km E of Adak, Alaska · 10590 days ago · 62 km deep · 28 km away
- 4.571 km ESE of Adak, Alaska · 10569 days ago · 33 km deep · 43 km away
- 4.555 km SSE of Adak, Alaska · 10566 days ago · 33 km deep · 75 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00087bs. Read Thu, Oct 1, 2026, 11:40 PM UTC.