M4.0 earthquake 58 km S of Chiniak, Alaska
A magnitude 4.0 earthquake struck 58 km S of Chiniak, Alaska on Fri, Aug 2, 1974, 12:22 AM GMT-9 (09:22 UTC), 64 km (40 mi) below the surface.
A larger quake followed: M4.1 93 km SE of Old Harbor, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.0 (mb), light
- Local time
- UTC
- 1974-08-02 09:22:20 UTC
- Depth
- 64.0 km (39.8 mi), shallow
- Epicenter
- 57.086° N, 152.309° 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
- 15
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 11 in the 60 days after this one and 18 in the 30 days before it.
After
- 4.193 km SE of Old Harbor, Alaska · 19046 days ago · 36 km deep · 55 km away
- 4.1102 km SE of Old Harbor, Alaska · 19045 days ago · 33 km deep · 61 km away
- 4.393 km ESE of Old Harbor, Alaska · 19044 days ago · 40 km deep · 41 km away
- 4.788 km SE of Old Harbor, Alaska · 19042 days ago · 16 km deep · 60 km away
- 4.676 km SE of Old Harbor, Alaska · 19042 days ago · 33 km deep · 41 km away
- 4.676 km SE of Old Harbor, Alaska · 19041 days ago · 32 km deep · 34 km away
- 5.386 km SE of Old Harbor, Alaska · 19041 days ago · 33 km deep · 49 km away
- 3.969 km SE of Old Harbor, Alaska · 19041 days ago · 67 km deep · 26 km away
- 4.675 km SE of Old Harbor, Alaska · 19041 days ago · 33 km deep · 38 km away
- 4.585 km ESE of Old Harbor, Alaska · 19041 days ago · 33 km deep · 34 km away
- 5.1105 km SSE of Chiniak, Alaska · 19000 days ago · 17 km deep · 57 km away
Before
- 4.081 km SE of Old Harbor, Alaska · 19047 days ago · 33 km deep · 35 km away
- 3.893 km SE of Old Harbor, Alaska · 19047 days ago · 33 km deep · 46 km away
- 3.993 km SE of Old Harbor, Alaska · 19047 days ago · 33 km deep · 50 km away
- 4.192 km SE of Old Harbor, Alaska · 19047 days ago · 33 km deep · 47 km away
- 6.089 km SE of Old Harbor, Alaska · 19047 days ago · 33 km deep · 51 km away
- 3.899 km SE of Old Harbor, Alaska · 19047 days ago · 33 km deep · 47 km away
- 4.2101 km SE of Old Harbor, Alaska · 19047 days ago · 16 km deep · 56 km away
- 3.9101 km SSE of Chiniak, Alaska · 19047 days ago · 33 km deep · 48 km away
- 4.397 km SE of Old Harbor, Alaska · 19047 days ago · 15 km deep · 51 km away
- 4.486 km SE of Old Harbor, Alaska · 19047 days ago · 16 km deep · 42 km away
- 3.891 km SE of Old Harbor, Alaska · 19047 days ago · 27 km deep · 47 km away
- 4.386 km SE of Old Harbor, Alaska · 19047 days ago · 7 km deep · 43 km away
- 4.597 km SE of Old Harbor, Alaska · 19047 days ago · 19 km deep · 51 km away
- 3.898 km ESE of Old Harbor, Alaska · 19047 days ago · 33 km deep · 46 km away
- 4.687 km SE of Old Harbor, Alaska · 19047 days ago · 15 km deep · 55 km away
- 6.394 km SE of Old Harbor, Alaska · 19047 days ago · 33 km deep · 48 km away
- 6.197 km SE of Old Harbor, Alaska · 19047 days ago · 10 km deep · 63 km away
- 4.690 km SE of Old Harbor, Alaska · 19047 days ago · 24 km deep · 42 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00007f0. Read Thu, Sep 24, 2026, 9:36 AM UTC.