M4.2 earthquake - 47 km NNW of Atka, Alaska
3342 d ago · 23 Aug 2017, 12:42 UTC 47 km NNW of Atka, Alaska
What happened
A magnitude 4.2 earthquake struck 47 km NNW of Atka, Alaska on 23 Aug 2017, 12:42 UTC at a depth of 174 km.
Earthquakes of this size are classed as Light. Widely felt nearby; objects may shake or fall. Significant damage is unusual. This was an intermediate-depth earthquake, so shaking is spread over a wider, gentler area.
Timeline
First reported by USGS
17 Oct 2026, 08:43 UTC
Community Live
Did you feel it?
Nearby in the last 30 days
- 3.4
M3.4 earthquake - 201 km SSE of Atka, Alaska
5 km deep
Light - 4.0
M4.0 earthquake - 92 km SSE of Adak, Alaska
12 km deep
Moderate - 3.9
M3.9 earthquake - 107 km SSE of Adak, Alaska
11 km deep
Light - 1.5
M1.5 earthquake - 20 km W of Adak, Alaska
-0 km deep
Minor - 1.1
M1.1 earthquake - 44 km NE of Adak, Alaska
3 km deep
Minor - -0.1
M-0.1 earthquake - 39 km ENE of Adak, Alaska
2 km deep
Minor - 0.5
M0.5 earthquake - 41 km NE of Adak, Alaska
5 km deep
Minor - 3.5
M3.5 earthquake - 8 km SW of Atka, Alaska
195 km deep
Light - 2.9
M2.9 earthquake - 93 km ESE of Adak, Alaska
27 km deep
Light - 4.2
M4.2 earthquake - 167 km S of Adak, Alaska
10 km deep
Moderate