M2.8 earthquake 240 km SSW of Nikolski, Alaska
A magnitude 2.8 earthquake struck 240 km SSW of Nikolski, Alaska on Sat, Jul 10, 2021, 11:36 PM HADT (08:36 UTC), 12 km (7 mi) below the surface.
A larger quake followed: M3.1 166 km SW 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
- 2.8 (ML, local (Richter)), micro
- Magnitude from
- Alaska Earthquake Center
- Local time
- UTC
- 2021-07-11 08:36:54 UTC
- Depth
- 12.0 km (7.5 mi), shallow
- Epicenter
- 50.931° N, 170.148° W
- Region
- Alaska
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Stations used
- 37
Nearby
Within 100 km, magnitude 1.5 and up: 3 in the 60 days after this one and 2 in the 30 days before it.
After
- 3.1166 km SW of Nikolski, Alaska · 1868 days ago · 37 km deep · 99 km away
- 2.3185 km S of Nikolski, Alaska · 1865 days ago · 27 km deep · 84 km away
- 2.8253 km SSW of Nikolski, Alaska · 1851 days ago · 15 km deep · 22 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event ak0218to5xms. Read Thu, Oct 1, 2026, 9:19 PM UTC.