M4.3 earthquake 183 km WSW of Adak, Alaska
A magnitude 4.3 earthquake struck 183 km WSW of Adak, Alaska on Thu, Mar 1, 1973, 12:38 AM GMT-11 (11:38 UTC), 47 km (29 mi) below the surface.
A larger quake followed: M4.6 183 km W 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
- 4.3 (mb), light
- Local time
- UTC
- 1973-03-01 11:38:10 UTC
- Depth
- 47.0 km (29.2 mi), shallow
- Epicenter
- 51.352° N, 179.151° 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 1.5 and up: 12 in the 60 days after this one and 2 in the 30 days before it.
After
- 4.6183 km W of Adak, Alaska · 19556 days ago · 103 km deep · 59 km away
- 3.8272 km WSW of Adak, Alaska · 19556 days ago · 38 km deep · 89 km away
- 4.9196 km WSW of Adak, Alaska · 19541 days ago · 40 km deep · 20 km away
- 4.2209 km WSW of Adak, Alaska · 19541 days ago · 51 km deep · 31 km away
- 5.0134 km WSW of Adak, Alaska · 19527 days ago · 50 km deep · 50 km away
- 3.8224 km W of Adak, Alaska · 19521 days ago · 111 km deep · 64 km away
- 5.5173 km WSW of Adak, Alaska · 19517 days ago · 54 km deep · 34 km away
- 3.9263 km WSW of Adak, Alaska · 19516 days ago · 66 km deep · 86 km away
- 4.8237 km WSW of Adak, Alaska · 19510 days ago · 54 km deep · 54 km away
- 4.0248 km WSW of Adak, Alaska · 19510 days ago · 45 km deep · 68 km away
- 4.1248 km WSW of Adak, Alaska · 19510 days ago · 42 km deep · 66 km away
- 3.7186 km SW of Adak, Alaska · 19504 days ago · 33 km deep · 68 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00000sr. Read Tue, Sep 22, 2026, 5:08 AM UTC.