M3.9 earthquake 200 km SSE of Atka, Alaska
A magnitude 3.9 earthquake struck 200 km SSE of Atka, Alaska on Wed, Dec 4, 2019, 1:35 AM HAST (11:35 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
- 3.9 (mb, body-wave), minor
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2019-12-04 11:35:50 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 50.483° N, 173.325° 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 |
|---|---|---|---|
| 3.9 | mb, body-wave | USGS National Earthquake Information Center | Preferred · Reviewed · ±0.088 · 34 stations |
| 3.3 | ML, local (Richter) | 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 7.5 km horizontally, 2.0 km in depth
- Magnitude uncertainty
- ±0.09
- Depth from
- Operator assigned
- Station coverage gap
- 209°, poorly surrounded by stations
- Stations used
- 68
Nearby
Within 100 km, magnitude 1.5 and up: 6 in the 60 days after this one and 4 in the 30 days before it.
After
- 2.9109 km S of Atka, Alaska · 2470 days ago · 13 km deep · 96 km away
- 2.9157 km SSE of Atka, Alaska · 2465 days ago · 10 km deep · 50 km away
- 2.5184 km S of Atka, Alaska · 2463 days ago · 10 km deep · 70 km away
- 2.2172 km SSE of Atka, Alaska · 2462 days ago · 8 km deep · 32 km away
- 3.3204 km SSE of Atka, Alaska · 2449 days ago · 10 km deep · 43 km away
- 2.7184 km S of Atka, Alaska · 2443 days ago · 17 km deep · 31 km away
Before
- 3.8193 km SSE of Atka, Alaska · 2494 days ago · 10 km deep · 14 km away
- 2.5Andreanof Islands, Aleutian Islands, Alaska · 2505 days ago · 10 km deep · 67 km away
- 2.5153 km SSE of Atka, Alaska · 2519 days ago · 10 km deep · 48 km away
- 2.3110 km SE of Atka, Alaska · 2524 days ago · 23 km deep · 100 km away
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us60006qna (also filed as ak019fj6et2d). Read Fri, Oct 2, 2026, 7:03 PM UTC.