M4.6 earthquake 104 km WSW of Adak, Alaska
A magnitude 4.6 earthquake struck 104 km WSW of Adak, Alaska on Mon, Aug 6, 1973, 1:19 AM GMT-10 (11:19 UTC), 55 km (34 mi) below the surface.
A larger quake followed: M5.6 47 km S 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
- 4.6 (mb), light
- Local time
- UTC
- 1973-08-06 11:19:10 UTC
- Depth
- 55.0 km (34.2 mi), shallow
- Epicenter
- 51.534° N, 178.045° 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
- 19
Nearby
Within 100 km, magnitude 1.6 and up: 9 in the 60 days after this one and 0 in the 30 days before it.
After
- 5.647 km S of Adak, Alaska · 19395 days ago · 62 km deep · 99 km away
- 4.661 km S of Adak, Alaska · 19395 days ago · 53 km deep · 100 km away
- 5.3195 km WSW of Adak, Alaska · 19384 days ago · 48 km deep · 90 km away
- 5.2129 km WSW of Adak, Alaska · 19384 days ago · 59 km deep · 25 km away
- 4.5191 km WSW of Adak, Alaska · 19384 days ago · 53 km deep · 87 km away
- 4.6193 km WSW of Adak, Alaska · 19384 days ago · 51 km deep · 89 km away
- 4.5187 km WSW of Adak, Alaska · 19384 days ago · 62 km deep · 84 km away
- 4.5202 km WSW of Adak, Alaska · 19384 days ago · 60 km deep · 97 km away
- 4.9190 km WSW of Adak, Alaska · 19372 days ago · 54 km deep · 86 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp000030n. Read Tue, Sep 22, 2026, 7:10 AM UTC.