M5.0 earthquake 44 km WSW of Nelson Lagoon, Alaska
A magnitude 5.0 earthquake struck 44 km WSW of Nelson Lagoon, Alaska on Mon, Feb 21, 1977, 9:02 AM GMT-11 (20:02 UTC), 167 km (104 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.0 (mb), moderate
- Local time
- UTC
- 1977-02-21 20:02:06 UTC
- Depth
- 167.0 km (103.8 mi), intermediate-depth
- Epicenter
- 55.913° N, 161.894° 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.
- Stations used
- 84
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.0 and up: 0 in the 60 days after this one and 0 in the 30 days before it.
None recorded.
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000mnt. Read Tue, Sep 22, 2026, 10:58 AM UTC.