M4.8 earthquake 118 km SE of Chignik, Alaska
A magnitude 4.8 earthquake struck 118 km SE of Chignik, Alaska on Tue, Feb 13, 1979, 12:39 AM GMT-10 (10:39 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.0 129 km SE of Chignik, 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), light
- Local time
- UTC
- 1979-02-13 10:39:39 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 55.692° N, 156.838° 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
- 49
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.8 and up: 6 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.5114 km SE of Chignik, Alaska · 17395 days ago · 33 km deep · 5 km away
- 5.0129 km SE of Chignik, Alaska · 17395 days ago · 33 km deep · 33 km away
- 3.5128 km SE of Chignik, Alaska · 17395 days ago · 33 km deep · 26 km away
- 4.4133 km SE of Chignik, Alaska · 17394 days ago · 33 km deep · 26 km away
- 4.4south of Alaska · 17394 days ago · 33 km deep · 28 km away
- 4.5122 km SE of Chignik, Alaska · 17391 days ago · 33 km deep · 22 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000yu6. Read Tue, Sep 29, 2026, 8:42 AM UTC.