M5.5 earthquake 104 km SSW of Nikolski, Alaska
A magnitude 5.5 earthquake struck 104 km SSW of Nikolski, Alaska on Wed, Oct 8, 1969, 10:59 PM GMT-9 (07:59 UTC), 30 km (19 mi) below the surface.
A larger quake followed: M5.6 69 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
- 5.5 (Mw, moment), moderate
- Magnitude from
- ISC-GEM global catalog
- Local time
- UTC
- 1969-10-09 07:59:43 UTC
- Depth
- 30.0 km (18.6 mi), shallow
- Epicenter
- 52.046° N, 169.348° 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.
- Magnitude uncertainty
- ±0.23
- Depth from
- From location
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.5 and up: 1 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem803237. Read Sun, Oct 4, 2026, 4:21 PM UTC.