M2.9 earthquake 199 km NW of Nikolski, Alaska
A magnitude 2.9 earthquake struck 199 km NW of Nikolski, Alaska on Fri, Oct 2, 2020, 1:15 AM AKDT (09:15 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M3.6 180 km WNW 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
- 2.9 (ML, local (Richter)), micro
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 2020-10-02 09:15:37 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 54.434° N, 170.520° 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 |
|---|---|---|---|
| 2.9 | ML, local (Richter) | USGS National Earthquake Information Center | Preferred · Reviewed · ±0.115 · 10 stations |
| 2.6 | 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 4.4 km horizontally, 1.6 km in depth
- Magnitude uncertainty
- ±0.12
- Depth from
- Operator assigned
- Station coverage gap
- 216°, poorly surrounded by stations
- Stations used
- 28
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 2 in the 60 days after this one and 1 in the 30 days before it.
After
- 3.6180 km WNW of Nikolski, Alaska · 2193 days ago · 253 km deep · 81 km away
- 2.8206 km NW of Nikolski, Alaska · 2161 days ago · 10 km deep · 75 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000c7y7 (also filed as ak020colrzg0). Read Sun, Oct 4, 2026, 1:53 PM UTC.