M4.6 earthquake 115 km SSW of Atka, Alaska
A magnitude 4.6 earthquake struck 115 km SSW of Atka, Alaska on Wed, Nov 28, 1984, 8:09 PM HAST (06:09 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.3 92 km ESE 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
- 4.6 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1984-11-29 06:09:08 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 51.233° N, 174.832° 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 1.6 and up: 2 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.354 km SSW of Atka, Alaska · 15253 days ago · 97 km deep · 63 km away
- 5.392 km ESE of Adak, Alaska · 15239 days ago · 59 km deep · 61 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00029kh. Read Thu, Oct 1, 2026, 11:45 PM UTC.