M6.3 earthquake 155 km WSW of Adak, Alaska
A magnitude 6.3 earthquake struck 155 km WSW of Adak, Alaska on Tue, Jul 16, 1929, 9:38 PM GMT-11 (08:38 UTC), 35 km (22 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 6.3 (mw), strong
- Local time
- UTC
- 1929-07-17 08:38:10 UTC
- Depth
- 35.0 km (21.7 mi), shallow
- Epicenter
- 51.498° N, 178.794° 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
- ±0.35
- Depth from
- From location
Nearby
Within 100 km, magnitude 2.5 and up: 1 in the 60 days after this one and 6 in the 30 days before it.
After
Before
- 6.0118 km W of Adak, Alaska · 35501 days ago · 35 km deep · 39 km away
- 6.075 km SW of Adak, Alaska · 35504 days ago · 35 km deep · 88 km away
- 7.388 km WSW of Adak, Alaska · 35505 days ago · 35 km deep · 73 km away
- 5.8150 km SW of Adak, Alaska · 35506 days ago · 35 km deep · 98 km away
- 5.7104 km W of Adak, Alaska · 35506 days ago · 35 km deep · 74 km away
- 7.0114 km WSW of Adak, Alaska · 35508 days ago · 35 km deep · 45 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem908220 (also filed as ushis813). Read Tue, Sep 22, 2026, 5:46 AM UTC.