M3.0 earthquake 47 km SSW of Nanwalek, Alaska
A magnitude 3.0 earthquake struck 47 km SSW of Nanwalek, Alaska on Wed, Jun 20, 1979, 10:33 PM GMT-9 (07:33 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M4.4 82 km SSE of Port Graham, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.0 (ml), minor
- Local time
- UTC
- 1979-06-21 07:33:36 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 58.969° N, 152.250° 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
- 11
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 2 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.482 km SSE of Port Graham, Alaska · 17228 days ago · 33 km deep · 57 km away
- 3.456 km WSW of Anchor Point, Alaska · 17220 days ago · 33 km deep · 81 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00011f9. Read Tue, Sep 22, 2026, 10:18 AM UTC.