M4.7 earthquake 103 km ESE of Adak, Alaska
A magnitude 4.7 earthquake struck 103 km ESE of Adak, Alaska on Fri, Nov 4, 1977, 12:04 AM GMT-11 (11:04 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.6 83 km ESE 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
- 4.7 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1977-11-04 11:04:14 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 51.386° N, 175.354° 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
- 15
Nearby
Within 100 km, magnitude 1.7 and up: 10 in the 60 days after this one and 2 in the 30 days before it.
After
- 5.489 km SE of Adak, Alaska · 17863 days ago · 33 km deep · 15 km away
- 5.683 km ESE of Adak, Alaska · 17862 days ago · 33 km deep · 22 km away
- 4.8109 km SE of Adak, Alaska · 17861 days ago · 33 km deep · 13 km away
- 4.778 km S of Atka, Alaska · 17847 days ago · 47 km deep · 73 km away
- 4.368 km SSE of Adak, Alaska · 17820 days ago · 50 km deep · 64 km away
- 4.281 km SSE of Adak, Alaska · 17818 days ago · 44 km deep · 68 km away
- 5.176 km S of Adak, Alaska · 17818 days ago · 53 km deep · 78 km away
- 4.661 km SSE of Adak, Alaska · 17817 days ago · 54 km deep · 71 km away
- 4.065 km S of Adak, Alaska · 17817 days ago · 56 km deep · 83 km away
- 4.166 km SSE of Adak, Alaska · 17817 days ago · 53 km deep · 65 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000rc8. Read Thu, Oct 1, 2026, 7:03 AM UTC.