M4.7 earthquake 89 km SE of Atka, Alaska
A magnitude 4.7 earthquake struck 89 km SE of Atka, Alaska on Fri, Apr 6, 1973, 7:46 AM GMT-11 (18:46 UTC), 40 km (25 mi) below the surface.
A larger quake followed: M5.4 82 km SE of Atka, 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
- 1973-04-06 18:46:13 UTC
- Depth
- 40.0 km (24.9 mi), shallow
- Epicenter
- 51.591° N, 173.348° 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.
- Stations used
- 23
Nearby
Within 100 km, magnitude 1.7 and up: 6 in the 60 days after this one and 2 in the 30 days before it.
After
- 5.482 km SE of Atka, Alaska · 19489 days ago · 43 km deep · 7 km away
- 4.464 km ESE of Atka, Alaska · 19489 days ago · 50 km deep · 37 km away
- 4.169 km SE of Atka, Alaska · 19489 days ago · 24 km deep · 23 km away
- 4.587 km SE of Atka, Alaska · 19488 days ago · 45 km deep · 8 km away
- 4.585 km SE of Atka, Alaska · 19488 days ago · 47 km deep · 6 km away
- 3.755 km SSE of Atka, Alaska · 19485 days ago · 54 km deep · 38 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp000019k. Read Fri, Oct 2, 2026, 1:59 PM UTC.