M5.8 earthquake 150 km SW of Adak, Alaska
A magnitude 5.8 earthquake struck 150 km SW of Adak, Alaska on Sat, Jul 6, 1929, 10:27 PM GMT-11 (09:27 UTC), 35 km (22 mi) below the surface.
A larger quake followed: M7.3 88 km WSW 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
- 5.8 (mw), moderate
- Local time
- UTC
- 1929-07-07 09:27:16 UTC
- Depth
- 35.0 km (21.7 mi), shallow
- Epicenter
- 50.796° N, 177.943° 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: 4 in the 60 days after this one and 3 in the 30 days before it.
After
- 7.388 km WSW of Adak, Alaska · 35506 days ago · 35 km deep · 77 km away
- 6.075 km SW of Adak, Alaska · 35505 days ago · 35 km deep · 81 km away
- 6.3155 km WSW of Adak, Alaska · 35496 days ago · 35 km deep · 98 km away
- 5.9131 km SW of Adak, Alaska · 35479 days ago · 35 km deep · 40 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem908197. Read Tue, Sep 22, 2026, 3:11 PM UTC.