M4.6 earthquake 42 km NE of Adak, Alaska
A magnitude 4.6 earthquake struck 42 km NE of Adak, Alaska on Mon, Sep 30, 1985, 4:58 PM HADT (01:58 UTC), 141 km (87 mi) below the surface.
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
- 1985-10-01 01:58:28 UTC
- Depth
- 140.6 km (87.4 mi), intermediate-depth
- Epicenter
- 52.156° N, 176.227° 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.
Nearby
Within 100 km, magnitude 1.6 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 usp0002kb2. Read Mon, Sep 21, 2026, 10:22 PM UTC.