M2.9 earthquake 13 km NW of Susitna, Alaska
A magnitude 2.9 earthquake struck 13 km NW of Susitna, Alaska on Thu, Feb 27, 1975, 12:28 AM GMT-9 (09:28 UTC), 35 km (22 mi) below the surface.
A larger quake followed: M3.9 23 km NW of Willow, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.9 (ml), micro
- Local time
- UTC
- 1975-02-27 09:28:00 UTC
- Depth
- 35.0 km (21.7 mi), shallow
- Epicenter
- 61.642° N, 150.653° 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
- 12
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 0 in the 30 days before it.
After
- 3.923 km NW of Willow, Alaska · 18822 days ago · 10 km deep · 35 km away
- 3.026 km ESE of Skwentna, Alaska · 18797 days ago · 33 km deep · 34 km away
- 3.03 km WNW of Susitna, Alaska · 18796 days ago · 11 km deep · 10 km away
- 3.229 km WSW of Skwentna, Alaska · 18786 days ago · 33 km deep · 74 km away
- 3.528 km WNW of Willow, Alaska · 18785 days ago · 41 km deep · 20 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000a25. Read Tue, Sep 22, 2026, 10:51 AM UTC.