M4.7 earthquake 77 km SSW of Nikolski, Alaska
A magnitude 4.7 earthquake struck 77 km SSW of Nikolski, Alaska on Mon, Sep 30, 1985, 2:01 AM AKDT (10:01 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.7 71 km S 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
- 4.7 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1985-09-30 10:01:34 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 52.299° N, 169.299° 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 1.7 and up: 8 in the 60 days after this one and 1 in the 30 days before it.
After
- 5.771 km S of Nikolski, Alaska · 14976 days ago · 33 km deep · 30 km away
- 4.947 km S of Nikolski, Alaska · 14976 days ago · 33 km deep · 37 km away
- 4.865 km S of Nikolski, Alaska · 14975 days ago · 33 km deep · 36 km away
- 4.877 km S of Nikolski, Alaska · 14974 days ago · 33 km deep · 45 km away
- 4.588 km SSW of Nikolski, Alaska · 14973 days ago · 33 km deep · 13 km away
- 4.999 km SSW of Nikolski, Alaska · 14973 days ago · 33 km deep · 23 km away
- 4.851 km ESE of Nikolski, Alaska · 14959 days ago · 33 km deep · 92 km away
- 4.7118 km WSW of Nikolski, Alaska · 14934 days ago · 33 km deep · 95 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002kab. Read Fri, Oct 2, 2026, 6:06 PM UTC.