M6.2 earthquake 147 km WSW of Adak, Alaska
A magnitude 6.2 earthquake struck 147 km WSW of Adak, Alaska on Sun, Mar 10, 1957, 2:28 AM GMT-11 (13:28 UTC), 35 km (22 mi) below the surface.
A larger quake followed: M7.0 148 km WSW 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
- 6.2 (mw), strong
- Local time
- UTC
- 1957-03-10 13:28:37 UTC
- Depth
- 35.0 km (21.7 mi), shallow
- Epicenter
- 51.399° N, 178.621° 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.
- Magnitude uncertainty
- ±0.20
- Depth from
- From location
Nearby
Within 100 km, magnitude 2.5 and up: 11 in the 60 days after this one and 1 in the 30 days before it.
After
- 7.0148 km WSW of Adak, Alaska · 25397 days ago · 25 km deep · 7 km away
- 6.5173 km WSW of Adak, Alaska · 25397 days ago · 35 km deep · 26 km away
- 6.4133 km SW of Adak, Alaska · 25396 days ago · 10 km deep · 37 km away
- 7.160 km SW of Adak, Alaska · 25396 days ago · 20 km deep · 96 km away
- 6.6152 km WSW of Adak, Alaska · 25395 days ago · 25 km deep · 8 km away
- 7.2162 km WSW of Adak, Alaska · 25393 days ago · 25 km deep · 17 km away
- 6.0Andreanof Islands, Aleutian Islands, Alaska · 25391 days ago · 35 km deep · 55 km away
- 5.8125 km WSW of Adak, Alaska · 25377 days ago · 35 km deep · 26 km away
- 5.9Andreanof Islands, Aleutian Islands, Alaska · 25368 days ago · 35 km deep · 40 km away
- 5.0135 km WSW of Adak, Alaska · 25365 days ago · 14 km away
- 5.8178 km WSW of Adak, Alaska · 25362 days ago · 35 km deep · 32 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem886070 (also filed as ushis2147). Read Tue, Sep 22, 2026, 3:21 PM UTC.