M3.3 earthquake 36 km NW of Nelson Lagoon, Alaska
A magnitude 3.3 earthquake struck 36 km NW of Nelson Lagoon, Alaska on Sat, Jan 20, 2018, 6:57 AM AKST (15:57 UTC), 217 km (135 mi) below the surface.
A larger quake followed: M4.6 49 km W of Nelson Lagoon, 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
- USGS National Earthquake Information Center
- Local time
- UTC
- 2018-01-20 15:57:05 UTC
- Depth
- 216.9 km (134.8 mi), intermediate-depth
- Epicenter
- 56.266° N, 161.542° 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 |
|---|---|---|---|
| 3.3 | ML, local (Richter) | USGS National Earthquake Information Center | Preferred · Reviewed |
| 3.2 | 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 8.6 km horizontally, 9.5 km in depth
- Depth from
- From location
- Station coverage gap
- 94°
- Stations used
- 75
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 7 in the 60 days after this one and 0 in the 30 days before it.
After
- 3.040 km E of Nelson Lagoon, Alaska · 3176 days ago · 160 km deep · 70 km away
- 3.329 km WNW of Nelson Lagoon, Alaska · 3173 days ago · 210 km deep · 21 km away
- 2.926 km SSE of Nelson Lagoon, Alaska · 3170 days ago · 8 km deep · 63 km away
- 4.649 km W of Nelson Lagoon, Alaska · 3140 days ago · 191 km deep · 40 km away
- 2.824 km W of Nelson Lagoon, Alaska · 3120 days ago · 184 km deep · 26 km away
- 2.844 km SW of Nelson Lagoon, Alaska · 3117 days ago · 175 km deep · 58 km away
- 2.150 km NE of King Cove, Alaska · 3117 days ago · 109 km deep · 97 km away
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000cm0g (also filed as ak18132183, ak018xc0oa9). Read Thu, Oct 1, 2026, 11:05 PM UTC.