M5.2 earthquake 87 km ESE of Adak, Alaska
A magnitude 5.2 earthquake struck 87 km ESE of Adak, Alaska on Thu, Nov 3, 1977, 11:02 PM GMT-11 (10:02 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.4 89 km SE 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
- 5.2 (mb), moderate
- Local time
- UTC
- 1977-11-04 10:02:03 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 51.528° N, 175.502° 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.
- Depth from
- OPERATOR_ASSIGNED
- Stations used
- 76
Nearby
Within 100 km, magnitude 2.2 and up: 11 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.7103 km ESE of Adak, Alaska · 17854 days ago · 33 km deep · 19 km away
- 5.489 km SE of Adak, Alaska · 17854 days ago · 33 km deep · 12 km away
- 5.683 km ESE of Adak, Alaska · 17853 days ago · 33 km deep · 4 km away
- 4.8109 km SE of Adak, Alaska · 17852 days ago · 33 km deep · 30 km away
- 4.778 km S of Atka, Alaska · 17838 days ago · 47 km deep · 82 km away
- 4.368 km SSE of Adak, Alaska · 17811 days ago · 50 km deep · 59 km away
- 4.281 km SSE of Adak, Alaska · 17809 days ago · 44 km deep · 66 km away
- 5.176 km S of Adak, Alaska · 17809 days ago · 53 km deep · 75 km away
- 4.661 km SSE of Adak, Alaska · 17808 days ago · 54 km deep · 64 km away
- 4.065 km S of Adak, Alaska · 17808 days ago · 56 km deep · 77 km away
- 4.166 km SSE of Adak, Alaska · 17808 days ago · 53 km deep · 59 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000rc7. Read Tue, Sep 22, 2026, 7:17 AM UTC.