M4.3 earthquake 61 km SW of Atka, Alaska
A magnitude 4.3 earthquake struck 61 km SW of Atka, Alaska on Mon, Sep 28, 1998, 11:25 PM HADT (08:25 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.2 41 km NE 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
- 1998-09-29 08:25:16 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 51.836° N, 174.884° 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: 3 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.015 km SSW of Atka, Alaska · 10210 days ago · 81 km deep · 48 km away
- 5.241 km NE of Adak, Alaska · 10195 days ago · 35 km deep · 91 km away
- 3.780 km SW of Atka, Alaska · 10189 days ago · 33 km deep · 19 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0008vpy. Read Sat, Oct 3, 2026, 12:09 AM UTC.