M4.0 earthquake 165 km SE of Atka, Alaska
A magnitude 4.0 earthquake struck 165 km SE of Atka, Alaska on Tue, Apr 4, 2017, 3:39 PM HADT (00:39 UTC), 10 km (6 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.0 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2017-04-05 00:39:41 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 51.129° N, 172.529° W
- Region
- Alaska
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Magnitude estimates
Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.
| Mag. | Scale | Computed by | Notes |
|---|---|---|---|
| 4.0 | mb, body-wave | USGS National Earthquake Information Center | Preferred · Reviewed · ±0.092 · 32 stations |
| 4.0 | mb, body-wave | Alaska Earthquake Center | Preliminary |
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Location uncertainty
- About 7.1 km horizontally, 2.0 km in depth
- Magnitude uncertainty
- ±0.09
- Depth from
- Operator assigned
- Station coverage gap
- 194°, poorly surrounded by stations
- Stations used
- 43
Nearby
Within 100 km, magnitude 1.5 and up: 7 in the 60 days after this one and 5 in the 30 days before it.
After
- 2.7113 km SE of Atka, Alaska · 3467 days ago · 9 km deep · 56 km away
- 2.8102 km SE of Atka, Alaska · 3467 days ago · 17 km deep · 65 km away
- 3.9120 km SSE of Atka, Alaska · 3464 days ago · 10 km deep · 62 km away
- 2.998 km SSE of Atka, Alaska · 3453 days ago · 20 km deep · 82 km away
- 2.888 km SE of Atka, Alaska · 3450 days ago · 26 km deep · 78 km away
- 2.273 km ESE of Atka, Alaska · 3449 days ago · 53 km deep · 97 km away
- 3.3143 km SE of Atka, Alaska · 3408 days ago · 37 km deep · 31 km away
Before
- 3.7113 km ESE of Atka, Alaska · 3469 days ago · 41 km deep · 81 km away
- 2.8197 km SSE of Atka, Alaska · 3486 days ago · 23 km deep · 85 km away
- 2.2Andreanof Islands, Aleutian Islands, Alaska · 3487 days ago · 14 km deep · 97 km away
- 2.6214 km SSE of Atka, Alaska · 3489 days ago · 10 km deep · 65 km away
- 2.6144 km SSE of Atka, Alaska · 3489 days ago · 23 km deep · 72 km away
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us10008glt (also filed as ak0174d4af6f). Read Fri, Oct 2, 2026, 5:20 PM UTC.