M6.1 earthquake 237 km WSW of Adak, Alaska
A magnitude 6.1 earthquake struck 237 km WSW of Adak, Alaska on Thu, Jun 2, 1955, 2:02 PM GMT+12 (02:02 UTC), 35 km (22 mi) below the surface.
A larger quake followed: M6.1 222 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
- 6.1 (mw), strong
- Local time
- UTC
- 1955-06-02 02:02:18 UTC
- Depth
- 35.0 km (21.7 mi), shallow
- Epicenter
- 51.499° N, 179.979° E
- 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
- ±0.51
- Depth from
- From location
Nearby
Within 100 km, magnitude 2.5 and up: 2 in the 60 days after this one and 1 in the 30 days before it.
After
- 6.1222 km WSW of Adak, Alaska · 26043 days ago · 35 km deep · 21 km away
- 6.7221 km WSW of Adak, Alaska · 26027 days ago · 30 km deep · 16 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem889596 (also filed as ushis2037). Read Tue, Sep 22, 2026, 2:35 PM UTC.