M4.8 earthquake 145 km SSE of Atka, Alaska
A magnitude 4.8 earthquake struck 145 km SSE of Atka, Alaska on Sat, Feb 7, 1998, 5:48 AM HAST (15:48 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M4.9 75 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
- 4.8 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1998-02-07 15:48:25 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 50.928° N, 173.665° 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 1.8 and up: 4 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0008fmt. Read Fri, Oct 2, 2026, 9:04 AM UTC.