M4.3 earthquake 224 km WSW of Adak, Alaska
A magnitude 4.3 earthquake struck 224 km WSW of Adak, Alaska on Wed, Sep 3, 1997, 5:21 PM HADT (02:21 UTC), 60 km (37 mi) below the surface.
A larger quake followed: M5.6 212 km WSW 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
- 4.3 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1997-09-04 02:21:55 UTC
- Depth
- 59.5 km (37.0 mi), shallow
- Epicenter
- 51.267° N, 179.726° 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 4 in the 30 days before it.
After
- 4.1Rat Islands, Aleutian Islands, Alaska · 10619 days ago · 33 km deep · 79 km away
- 4.9Andreanof Islands, Aleutian Islands, Alaska · 10609 days ago · 53 km deep · 97 km away
- 4.9216 km WSW of Adak, Alaska · 10605 days ago · 33 km deep · 17 km away
- 5.6212 km WSW of Adak, Alaska · 10605 days ago · 33 km deep · 18 km away
- 4.6136 km WSW of Adak, Alaska · 10581 days ago · 33 km deep · 92 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp000873w. Read Thu, Oct 1, 2026, 7:11 PM UTC.