M4.6 earthquake 108 km SE of False Pass, Alaska
A magnitude 4.6 earthquake struck 108 km SE of False Pass, Alaska on Wed, Jul 1, 1987, 12:39 AM AKDT (08:39 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M4.8 124 km S of False Pass, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.6 (mb), light
- Local time
- UTC
- 1987-07-01 08:39:11 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 54.056° N, 162.452° 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
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.6 and up: 1 in the 60 days after this one and 7 in the 30 days before it.
After
Before
- 4.6Unimak Island region, Alaska · 14335 days ago · 33 km deep · 77 km away
- 4.7108 km SSW of False Pass, Alaska · 14338 days ago · 33 km deep · 94 km away
- 4.2131 km S of King Cove, Alaska · 14342 days ago · 33 km deep · 31 km away
- 4.984 km SE of False Pass, Alaska · 14343 days ago · 33 km deep · 25 km away
- 4.878 km SSE of False Pass, Alaska · 14343 days ago · 33 km deep · 30 km away
- 5.582 km SE of False Pass, Alaska · 14343 days ago · 33 km deep · 27 km away
- 6.588 km SE of False Pass, Alaska · 14343 days ago · 34 km deep · 20 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp000367t. Read Sun, Sep 27, 2026, 6:57 AM UTC.