M3.1 earthquake 17 km WSW of Susitna, Alaska
A magnitude 3.1 earthquake struck 17 km WSW of Susitna, Alaska on Thu, Feb 22, 1973, 10:10 PM GMT-10 (08:10 UTC), 64 km (40 mi) below the surface.
A larger quake followed: M4.3 31 km NE of Skwentna, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.1 (mb), minor
- Local time
- UTC
- 1973-02-23 08:10:39 UTC
- Depth
- 64.0 km (39.8 mi), shallow
- Epicenter
- 61.460° N, 150.785° 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
- 10
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 4 in the 30 days before it.
After
- 3.012 km NNW of Sterling, Alaska · 19549 days ago · 37 km deep · 91 km away
- 4.331 km NE of Skwentna, Alaska · 19549 days ago · 72 km deep · 85 km away
- 3.88 km ESE of Elmendorf Air Force Base, Alaska · 19528 days ago · 39 km deep · 74 km away
- 3.512 km ENE of Sterling, Alaska · 19519 days ago · 57 km deep · 98 km away
- 3.213 km S of Point Possession, Alaska · 19517 days ago · 33 km deep · 73 km away
Before
- 3.017 km S of Petersville, Alaska · 19583 days ago · 34 km deep · 98 km away
- 3.618 km NNE of Skwentna, Alaska · 19583 days ago · 95 km deep · 78 km away
- 3.87 km W of Willow, Alaska · 19584 days ago · 54 km deep · 46 km away
- 3.628 km WSW of Point MacKenzie, Alaska · 19585 days ago · 45 km deep · 27 km away
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00000nv. Read Tue, Sep 22, 2026, 5:27 PM UTC.