M4.3 earthquake 94 km SE of Atka, Alaska
A magnitude 4.3 earthquake struck 94 km SE of Atka, Alaska on Mon, Dec 25, 1978, 5:12 AM GMT-11 (16:12 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M4.8 91 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
- 4.3 (mb), light
- Local time
- UTC
- 1978-12-25 16:12:12 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 51.599° N, 173.215° 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
- Stations used
- 39
Nearby
Within 100 km, magnitude 1.5 and up: 8 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.187 km SE of Atka, Alaska · 17438 days ago · 33 km deep · 14 km away
- 4.891 km SE of Atka, Alaska · 17430 days ago · 35 km deep · 6 km away
- 5.180 km SE of Atka, Alaska · 17430 days ago · 31 km deep · 15 km away
- 5.290 km SE of Atka, Alaska · 17430 days ago · 33 km deep · 7 km away
- 4.680 km SE of Atka, Alaska · 17430 days ago · 35 km deep · 22 km away
- 4.888 km SE of Atka, Alaska · 17429 days ago · 33 km deep · 7 km away
- 4.894 km SE of Atka, Alaska · 17424 days ago · 43 km deep · 5 km away
- 4.456 km SSE of Atka, Alaska · 17390 days ago · 33 km deep · 52 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000y3z. Read Tue, Sep 22, 2026, 5:15 PM UTC.