M4.3 earthquake 109 km SE of Adak, Alaska
A magnitude 4.3 earthquake struck 109 km SE of Adak, Alaska on Sun, Feb 1, 1998, 8:15 PM HAST (06:15 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M4.7 78 km S 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
- 4.3 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1998-02-02 06:15:10 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 51.311° N, 175.335° 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: 8 in the 60 days after this one and 0 in the 30 days before it.
After
- 4.640 km ESE of Adak, Alaska · 10458 days ago · 43 km deep · 69 km away
- 3.493 km S of Adak, Alaska · 10458 days ago · 33 km deep · 79 km away
- 4.472 km S of Adak, Alaska · 10456 days ago · 58 km deep · 89 km away
- 4.440 km E of Adak, Alaska · 10444 days ago · 48 km deep · 82 km away
- 4.778 km S of Atka, Alaska · 10434 days ago · 33 km deep · 83 km away
- 4.059 km S of Atka, Alaska · 10434 days ago · 33 km deep · 86 km away
- 4.493 km SW of Atka, Alaska · 10426 days ago · 33 km deep · 39 km away
- 3.456 km E of Adak, Alaska · 10414 days ago · 33 km deep · 81 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0008fax. Read Fri, Oct 2, 2026, 7:48 PM UTC.