M3.3 earthquake 200 km SSE of Atka, Alaska
A magnitude 3.3 earthquake struck 200 km SSE of Atka, Alaska on Tue, Oct 18, 2016, 7:52 PM HADT (04:52 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M3.6 164 km SSE of Atka, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.3 (ML, local (Richter)), minor
- Magnitude from
- Alaska Earthquake Center
- Local time
- UTC
- 2016-10-19 04:52:14 UTC
- Depth
- 10.1 km (6.3 mi), shallow
- Epicenter
- 50.434° N, 173.625° 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
- 8
Nearby
Within 100 km, magnitude 1.5 and up: 4 in the 60 days after this one and 4 in the 30 days before it.
After
- 2.5176 km SSE of Atka, Alaska · 3620 days ago · 25 km deep · 35 km away
- 2.4113 km S of Atka, Alaska · 3620 days ago · 26 km deep · 86 km away
- 3.5156 km S of Atka, Alaska · 3584 days ago · 10 km deep · 46 km away
- 3.6164 km SSE of Atka, Alaska · 3583 days ago · 23 km deep · 37 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event ak016dgn5lhx (also filed as ak14263362). Read Sun, Oct 4, 2026, 6:23 AM UTC.