M4.0 earthquake 37 km NNE of Adak, Alaska
A magnitude 4.0 earthquake struck 37 km NNE of Adak, Alaska on Mon, Mar 17, 1997, 9:43 AM HAST (19:43 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M4.3 48 km SSE 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
- 1997-03-17 19:43:17 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 52.174° N, 176.396° 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: 5 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.348 km SSE of Adak, Alaska · 10762 days ago · 33 km deep · 77 km away
- 2.844 km E of Adak, Alaska · 10759 days ago · 33 km deep · 46 km away
- 4.129 km S of Adak, Alaska · 10757 days ago · 64 km deep · 66 km away
- 3.259 km S of Adak, Alaska · 10754 days ago · 33 km deep · 94 km away
- 3.467 km W of Atka, Alaska · 10737 days ago · 33 km deep · 83 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0007yzj. Read Fri, Oct 2, 2026, 2:35 AM UTC.