M2.7 earthquake 231 km SE of Old Harbor, Alaska
A magnitude 2.7 earthquake struck 231 km SE of Old Harbor, Alaska on Tue, Nov 7, 2017, 3:24 PM AKST (00:24 UTC), 5 km (3 mi) below the surface.
A larger quake followed: M3.2 205 km SSE of Old Harbor, 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
- USGS National Earthquake Information Center
- Local time
- UTC
- 2017-11-08 00:24:39 UTC
- Depth
- 4.7 km (2.9 mi), shallow
- Epicenter
- 55.731° N, 150.656° 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) | USGS National Earthquake Information Center | Preferred · Reviewed · ±0.091 · 16 stations |
| 2.8 | 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 8.9 km horizontally, 9.2 km in depth
- Magnitude uncertainty
- ±0.09
- Depth from
- From location
- Station coverage gap
- 257°, 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: 3 in the 60 days after this one and 2 in the 30 days before it.
After
- 3.1184 km SE of Chiniak, Alaska · 3210 days ago · 25 km deep · 91 km away
- 2.7224 km SE of Old Harbor, Alaska · 3198 days ago · 5 km deep · 27 km away
- 3.2205 km SSE of Old Harbor, Alaska · 3197 days ago · 8 km deep · 72 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us2000bmpi (also filed as ak17197872, ak017ebztift). Read Sun, Oct 4, 2026, 6:42 PM UTC.