M5.9 earthquake 185 km SSE of Attu Station, Alaska
A magnitude 5.9 earthquake struck 185 km SSE of Attu Station, Alaska on Fri, Mar 23, 1973, 6:55 PM GMT+12 (06:55 UTC), 27 km (17 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.9 (ms), moderate
- Local time
- UTC
- 1973-03-23 06:55:33 UTC
- Depth
- 27.0 km (16.8 mi), shallow
- Epicenter
- 51.301° N, 174.217° 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
- 122
Nearby
Within 100 km, magnitude 2.5 and up: 4 in the 60 days after this one and 0 in the 30 days before it.
After
- 4.4194 km SSE of Attu Station, Alaska · 19541 days ago · 33 km deep · 21 km away
- 4.9Near Islands, Aleutian Islands, Alaska · 19539 days ago · 33 km deep · 16 km away
- 4.6175 km SSE of Attu Station, Alaska · 19539 days ago · 33 km deep · 14 km away
- 4.2182 km SSE of Attu Station, Alaska · 19527 days ago · 33 km deep · 7 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp000011e (also filed as ushis3224, iscgem763215). Read Tue, Sep 22, 2026, 11:20 AM UTC.