M4.2 earthquake 197 km SE of Attu Station, Alaska
A magnitude 4.2 earthquake struck 197 km SE of Attu Station, Alaska on Wed, Aug 22, 1973, 1:01 PM GMT+12 (01:01 UTC), 49 km (30 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.2 (mb), light
- Local time
- UTC
- 1973-08-22 01:01:13 UTC
- Depth
- 49.0 km (30.4 mi), shallow
- Epicenter
- 51.785° N, 175.512° 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.
- Stations used
- 18
Nearby
Within 100 km, magnitude 1.5 and up: 0 in the 60 days after this one and 0 in the 30 days before it.
None recorded.
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp000035c. Read Tue, Sep 22, 2026, 8:55 PM UTC.