M6.0 earthquake 75 km SW of Adak, Alaska
A magnitude 6.0 earthquake struck 75 km SW of Adak, Alaska on Mon, Jul 8, 1929, 8:08 AM GMT-11 (19:08 UTC), 35 km (22 mi) below the surface.
A larger quake followed: M6.0 118 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
- 6.0 (mw), moderate
- Local time
- UTC
- 1929-07-08 19:08:56 UTC
- Depth
- 35.0 km (21.7 mi), shallow
- Epicenter
- 51.479° N, 177.523° 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.
- Magnitude uncertainty
- ±0.20
- Depth from
- From location
Nearby
Within 100 km, magnitude 2.5 and up: 3 in the 60 days after this one and 6 in the 30 days before it.
After
- 6.0118 km W of Adak, Alaska · 35501 days ago · 35 km deep · 62 km away
- 6.3155 km WSW of Adak, Alaska · 35496 days ago · 35 km deep · 88 km away
- 5.9131 km SW of Adak, Alaska · 35479 days ago · 35 km deep · 56 km away
Before
- 7.388 km WSW of Adak, Alaska · 35505 days ago · 35 km deep · 15 km away
- 5.8150 km SW of Adak, Alaska · 35506 days ago · 35 km deep · 81 km away
- 5.7104 km W of Adak, Alaska · 35506 days ago · 35 km deep · 74 km away
- 6.272 km SW of Adak, Alaska · 35507 days ago · 25 km deep · 18 km away
- 6.685 km SSW of Adak, Alaska · 35507 days ago · 25 km deep · 56 km away
- 7.0114 km WSW of Adak, Alaska · 35508 days ago · 35 km deep · 44 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem908201. Read Tue, Sep 22, 2026, 7:58 AM UTC.