M3.3 earthquake 192 km SE of Nikolski, Alaska
A magnitude 3.3 earthquake struck 192 km SE of Nikolski, Alaska on Sun, Nov 8, 2020, 2:45 AM AKST (11:45 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M4.3 117 km ESE of Nikolski, 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
- 2020-11-08 11:45:30 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 51.963° N, 166.529° 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 |
|---|---|---|---|
| 3.3 | ML, local (Richter) | USGS National Earthquake Information Center | Preferred · Reviewed · ±0.097 · 14 stations |
| 2.9 | 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 7.8 km horizontally, 2.0 km in depth
- Magnitude uncertainty
- ±0.10
- Depth from
- Operator assigned
- Station coverage gap
- 232°, poorly surrounded by stations
- Stations used
- 22
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 4 in the 60 days after this one and 3 in the 30 days before it.
After
- 4.3117 km ESE of Nikolski, Alaska · 2146 days ago · 43 km deep · 85 km away
- 3.1208 km SE of Nikolski, Alaska · 2141 days ago · 10 km deep · 16 km away
- 3.0205 km SSE of Unalaska, Alaska · 2133 days ago · 10 km deep · 100 km away
- 2.3139 km S of Unalaska, Alaska · 2106 days ago · 17 km deep · 73 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000crwe (also filed as ak020edu13zc). Read Sat, Oct 3, 2026, 6:12 AM UTC.