M2.7 earthquake 215 km SSE of Old Harbor, Alaska
A magnitude 2.7 earthquake struck 215 km SSE of Old Harbor, Alaska on Tue, Nov 23, 2021, 7:37 PM AKST (04:37 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M2.9 175 km SE of Akhiok, 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), micro
- Local time
- UTC
- 2021-11-24 04:37:19 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 55.394° N, 152.054° 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.
- Location uncertainty
- About 4.3 km horizontally, 2.0 km in depth
- Magnitude uncertainty
- ±0.10
- Depth from
- Operator assigned
- Station coverage gap
- 278°, poorly surrounded by stations
- Stations used
- 23
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 1 in the 60 days after this one and 2 in the 30 days before it.
After
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us7000g9f5 (also filed as ak021f2ivjha). Read Wed, Sep 30, 2026, 10:20 PM UTC.