M4.9 earthquake 91 km S of Atka, Alaska
A magnitude 4.9 earthquake struck 91 km S of Atka, Alaska on Mon, Oct 6, 1997, 8:11 AM HADT (17:11 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.2 79 km SE of Atka, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.9 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1997-10-06 17:11:29 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 51.393° N, 174.459° 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 1.9 and up: 3 in the 60 days after this one and 6 in the 30 days before it.
After
- 4.571 km ESE of Adak, Alaska · 10569 days ago · 33 km deep · 89 km away
- 4.495 km SE of Atka, Alaska · 10569 days ago · 33 km deep · 92 km away
- 5.279 km SE of Atka, Alaska · 10547 days ago · 33 km deep · 77 km away
Before
- 5.287 km E of Adak, Alaska · 10590 days ago · 62 km deep · 80 km away
- 5.1Andreanof Islands, Aleutian Islands, Alaska · 10599 days ago · 33 km deep · 72 km away
- 4.477 km SE of Atka, Alaska · 10599 days ago · 33 km deep · 77 km away
- 4.983 km SE of Atka, Alaska · 10600 days ago · 33 km deep · 69 km away
- 4.356 km SE of Atka, Alaska · 10600 days ago · 33 km deep · 80 km away
- 4.986 km WSW of Atka, Alaska · 10601 days ago · 56 km deep · 79 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00088n3. Read Fri, Oct 2, 2026, 2:16 AM UTC.