M3.7 earthquake 152 km WNW of Nikolski, Alaska
A magnitude 3.7 earthquake struck 152 km WNW of Nikolski, Alaska on Tue, Nov 3, 2020, 2:52 AM HAST (12:52 UTC), 139 km (86 mi) below the surface.
A larger quake followed: M4.5 124 km W 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
- 3.7 (mb, body-wave), minor
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2020-11-03 12:52:47 UTC
- Depth
- 138.6 km (86.1 mi), intermediate-depth
- Epicenter
- 53.235° N, 171.082° 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 |
|---|---|---|---|
| 3.7 | mb, body-wave | USGS National Earthquake Information Center | Preferred · Reviewed · ±0.11 · 21 stations |
| 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 8.7 km horizontally, 5.9 km in depth
- Magnitude uncertainty
- ±0.11
- Depth from
- From location
- Station coverage gap
- 123°
- Stations used
- 55
Nearby
Within 100 km, magnitude 1.5 and up: 6 in the 60 days after this one and 2 in the 30 days before it.
After
- 2.8120 km WSW of Nikolski, Alaska · 2142 days ago · 25 km deep · 93 km away
- 3.3134 km WNW of Nikolski, Alaska · 2117 days ago · 148 km deep · 53 km away
- 4.5124 km W of Nikolski, Alaska · 2117 days ago · 229 km deep · 31 km away
- 2.6144 km NE of Atka, Alaska · 2116 days ago · 145 km deep · 98 km away
- 3.283 km W of Nikolski, Alaska · 2111 days ago · 143 km deep · 77 km away
- 3.855 km WNW of Nikolski, Alaska · 2111 days ago · 20 km deep · 99 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us7000cbfv (also filed as ak020e5kzcdg). Read Thu, Oct 1, 2026, 5:20 AM UTC.