M2.7 earthquake 135 km SE of Chignik, Alaska
A magnitude 2.7 earthquake struck 135 km SE of Chignik, Alaska on Fri, Dec 18, 2015, 4:35 AM AKST (13:35 UTC), 52 km (32 mi) below the surface.
A larger quake followed: M4.0 78 km SSE of Chignik, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.7 (ML, local (Richter)), micro
- Magnitude from
- Alaska Earthquake Center
- Local time
- UTC
- 2015-12-18 13:35:07 UTC
- Depth
- 52.2 km (32.4 mi), shallow
- Epicenter
- 55.422° N, 156.900° 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 |
|---|---|---|---|
| 2.7 | ML, local (Richter) | Alaska Earthquake Center | Preferred · Preliminary |
| 2.7 | ML, local (Richter) | USGS National Earthquake Information Center | Reviewed · 13 stations |
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
- 13
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 3 in the 30 days before it.
After
- 4.078 km SSE of Chignik, Alaska · 3929 days ago · 9 km deep · 65 km away
- 3.4136 km SE of Perryville, Alaska · 3927 days ago · 19 km deep · 50 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event ak015g6d4bcc (also filed as ak12294011, us100048yd). Read Sun, Oct 4, 2026, 11:06 PM UTC.