M4.5 earthquake 109 km SSW of Nikolski, Alaska
A magnitude 4.5 earthquake struck 109 km SSW of Nikolski, Alaska on Sat, Apr 3, 1976, 4:31 PM GMT-10 (02:31 UTC), 24 km (15 mi) below the surface.
A larger quake followed: M4.8 88 km SSW of Nikolski, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.5 (mb), light
- Local time
- UTC
- 1976-04-04 02:31:48 UTC
- Depth
- 24.0 km (14.9 mi), shallow
- Epicenter
- 52.049° N, 169.549° 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
- 44
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 6 in the 30 days before it.
After
- 4.888 km SSW of Nikolski, Alaska · 18434 days ago · 15 km deep · 24 km away
- 5.2107 km SW of Nikolski, Alaska · 18426 days ago · 38 km deep · 59 km away
Before
- 4.594 km SSW of Nikolski, Alaska · 18434 days ago · 37 km deep · 15 km away
- 4.690 km SSW of Nikolski, Alaska · 18435 days ago · 33 km deep · 20 km away
- 5.0101 km SSW of Nikolski, Alaska · 18435 days ago · 22 km deep · 12 km away
- 4.983 km SW of Nikolski, Alaska · 18435 days ago · 33 km deep · 33 km away
- 4.092 km SSW of Nikolski, Alaska · 18435 days ago · 33 km deep · 17 km away
- 4.897 km SSW of Nikolski, Alaska · 18435 days ago · 34 km deep · 14 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000fru. Read Tue, Sep 22, 2026, 5:28 PM UTC.