M3.8 earthquake 7 km NW of Point MacKenzie, Alaska
A magnitude 3.8 earthquake struck 7 km NW of Point MacKenzie, Alaska on Wed, Jan 1, 1975, 11:15 AM GMT-10 (21:15 UTC), 63 km (39 mi) below the surface.
A larger quake followed: M4.8 12 km S of Susitna, 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
- 1975-01-01 21:15:54 UTC
- Depth
- 63.0 km (39.1 mi), shallow
- Epicenter
- 61.411° N, 150.059° 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
- 16
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 7 in the 60 days after this one and 3 in the 30 days before it.
After
- 3.938 km SSW of Skwentna, Alaska · 18892 days ago · 126 km deep · 95 km away
- 4.812 km S of Susitna, Alaska · 18889 days ago · 66 km deep · 23 km away
- 3.824 km WNW of Susitna, Alaska · 18885 days ago · 70 km deep · 52 km away
- 3.014 km NNE of Houston, Alaska · 18876 days ago · 28 km deep · 42 km away
- 3.98 km NE of Anchorage, Alaska · 18875 days ago · 46 km deep · 20 km away
- 3.70 km SSE of Point MacKenzie, Alaska · 18873 days ago · 42 km deep · 8 km away
- 2.913 km NW of Susitna, Alaska · 18843 days ago · 35 km deep · 41 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00009c0. Read Wed, Sep 30, 2026, 4:23 PM UTC.