M3.8 earthquake 24 km WNW of Susitna, Alaska
A magnitude 3.8 earthquake struck 24 km WNW of Susitna, Alaska on Thu, Jan 16, 1975, 3:33 PM GMT-10 (01:33 UTC), 70 km (43 mi) below the surface.
A larger quake followed: M3.9 8 km NE of Anchorage, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.8 (mb), minor
- Local time
- UTC
- 1975-01-17 01:33:52 UTC
- Depth
- 70.0 km (43.5 mi), intermediate-depth
- Epicenter
- 61.658° N, 150.897° 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
- 11
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 6 in the 30 days before it.
After
- 3.014 km NNE of Houston, Alaska · 18867 days ago · 28 km deep · 64 km away
- 3.98 km NE of Anchorage, Alaska · 18866 days ago · 46 km deep · 72 km away
- 3.70 km SSE of Point MacKenzie, Alaska · 18865 days ago · 42 km deep · 60 km away
- 2.913 km NW of Susitna, Alaska · 18835 days ago · 35 km deep · 13 km away
- 3.923 km NW of Willow, Alaska · 18822 days ago · 10 km deep · 42 km away
Before
- 4.812 km S of Susitna, Alaska · 18880 days ago · 66 km deep · 33 km away
- 3.938 km SSW of Skwentna, Alaska · 18884 days ago · 126 km deep · 45 km away
- 3.87 km NW of Point MacKenzie, Alaska · 18892 days ago · 63 km deep · 52 km away
- 5.923 km NE of Willow, Alaska · 18892 days ago · 66 km deep · 67 km away
- 5.121 km SSE of Susitna North, Alaska · 18894 days ago · 62 km deep · 73 km away
- 5.65 km N of Susitna, Alaska · 18895 days ago · 67 km deep · 21 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00009hr. Read Tue, Sep 22, 2026, 10:31 AM UTC.