M2.5 earthquake 165 km SSE of Adak, Alaska
A magnitude 2.5 earthquake struck 165 km SSE of Adak, Alaska on Wed, Mar 10, 2021, 2:15 PM HAST (00:15 UTC), 10 km (6 mi) below the surface.
A larger quake followed: M3.8 98 km SSE of Adak, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.5 (ml), micro
- Local time
- UTC
- 2021-03-11 00:15:54 UTC
- Depth
- 10.0 km (6.2 mi), shallow
- Epicenter
- 50.421° N, 176.097° 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
- ±0.13
- Depth from
- Operator assigned
- Station coverage gap
- 306°, poorly surrounded by stations
- Stations used
- 23
Nearby
Within 100 km, magnitude 1.5 and up: 8 in the 60 days after this one and 7 in the 30 days before it.
After
- 2.3175 km SE of Adak, Alaska · 2012 days ago · 26 km deep · 70 km away
- 2.3182 km SE of Adak, Alaska · 2008 days ago · 2 km deep · 79 km away
- 2.1107 km SSW of Adak, Alaska · 1997 days ago · 26 km deep · 85 km away
- 2.0162 km SE of Adak, Alaska · 1995 days ago · 20 km deep · 73 km away
- 3.898 km SSE of Adak, Alaska · 1986 days ago · 10 km deep · 75 km away
- 1.767 km SSE of Adak, Alaska · 1985 days ago · 12 km deep · 99 km away
- 1.575 km SSE of Adak, Alaska · 1985 days ago · 26 km deep · 92 km away
- 2.5176 km SSE of Adak, Alaska · 1982 days ago · 10 km deep · 58 km away
Before
- 3.3181 km SSW of Adak, Alaska · 2034 days ago · 10 km deep · 84 km away
- 2.8178 km S of Adak, Alaska · 2042 days ago · 28 km deep · 65 km away
- 3.075 km SSE of Adak, Alaska · 2043 days ago · 35 km deep · 98 km away
- 1.766 km SSE of Adak, Alaska · 2045 days ago · 14 km deep · 99 km away
- 2.2162 km SE of Adak, Alaska · 2045 days ago · 5 km deep · 80 km away
- 2.8208 km SSW of Atka, Alaska · 2046 days ago · 10 km deep · 91 km away
- 2.175 km SSE of Adak, Alaska · 2053 days ago · 26 km deep · 91 km away
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event us6000dydz (also filed as ak02137rpmpe). Read Thu, Sep 24, 2026, 12:47 PM UTC.