M4.5 earthquake 120 km SSW of Unalaska, Alaska
A magnitude 4.5 earthquake struck 120 km SSW of Unalaska, Alaska on Sat, May 26, 1979, 4:43 AM GMT-9 (13:43 UTC), 26 km (16 mi) below the surface.
A larger quake followed: M4.6 116 km E 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
- 1979-05-26 13:43:05 UTC
- Depth
- 26.0 km (16.2 mi), shallow
- Epicenter
- 52.810° N, 166.898° 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
- 20
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 9 in the 60 days after this one and 4 in the 30 days before it.
After
- 4.6116 km E of Nikolski, Alaska · 17286 days ago · 33 km deep · 17 km away
- 4.7118 km ESE of Nikolski, Alaska · 17285 days ago · 33 km deep · 23 km away
- 4.4126 km E of Nikolski, Alaska · 17284 days ago · 33 km deep · 10 km away
- 4.699 km SSW of Unalaska, Alaska · 17277 days ago · 33 km deep · 29 km away
- 4.5104 km SSW of Unalaska, Alaska · 17269 days ago · 40 km deep · 24 km away
- 5.1117 km E of Nikolski, Alaska · 17247 days ago · 33 km deep · 15 km away
- 4.9126 km S of Unalaska, Alaska · 17246 days ago · 21 km deep · 7 km away
- 3.833 km WSW of Unalaska, Alaska · 17237 days ago · 33 km deep · 100 km away
- 4.1105 km S of Unalaska, Alaska · 17228 days ago · 33 km deep · 29 km away
Before
- 4.6114 km SSW of Unalaska, Alaska · 17287 days ago · 33 km deep · 16 km away
- 4.8169 km ESE of Nikolski, Alaska · 17287 days ago · 33 km deep · 67 km away
- 6.2129 km ESE of Nikolski, Alaska · 17287 days ago · 23 km deep · 24 km away
- 5.139 km ESE of Nikolski, Alaska · 17304 days ago · 39 km deep · 94 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00010wm. Read Tue, Sep 22, 2026, 10:01 AM UTC.