M4.6 earthquake 230 km SSW of Adak, Alaska
A magnitude 4.6 earthquake struck 230 km SSW of Adak, Alaska on Thu, Jan 30, 2020, 8:34 AM HAST (18:34 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
- 4.6 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2020-01-30 18:34:01 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 49.958° N, 177.873° 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 |
|---|---|---|---|
| 4.6 | mb, body-wave | USGS National Earthquake Information Center | Preferred · Reviewed · ±0.035 · 248 stations |
| 4.1 | 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 4.8 km horizontally, 1.8 km in depth
- Magnitude uncertainty
- ±0.04
- Depth from
- Operator assigned
- Station coverage gap
- 115°
- Stations used
- 137
Nearby
Within 100 km, magnitude 1.6 and up: 4 in the 60 days after this one and 4 in the 30 days before it.
After
- 3.3168 km S of Adak, Alaska · 2409 days ago · 10 km deep · 84 km away
- 2.5172 km SSW of Adak, Alaska · 2397 days ago · 28 km deep · 58 km away
- 2.6249 km SSW of Adak, Alaska · 2394 days ago · 10 km deep · 48 km away
- 3.3256 km SW of Adak, Alaska · 2391 days ago · 10 km deep · 93 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us60007k9x (also filed as ak0201dx1eug). Read Thu, Oct 1, 2026, 2:35 AM UTC.