M4.2 earthquake 35 km WSW of Cantwell, Alaska
A magnitude 4.2 earthquake struck 35 km WSW of Cantwell, Alaska on Sun, Jul 19, 1981, 12:20 AM GMT-9 (09:20 UTC), 17 km (10 mi) below the surface.
A larger quake followed: M4.4 49 km W of Cantwell, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.2 (mb), light
- Local time
- UTC
- 1981-07-19 09:20:27 UTC
- Depth
- 16.8 km (10.4 mi), shallow
- Epicenter
- 63.295° N, 149.622° 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.
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 6 in the 60 days after this one and 0 in the 30 days before it.
After
- 3.424 km WSW of McKinley Park, Alaska · 16496 days ago · 33 km deep · 42 km away
- 4.449 km W of Cantwell, Alaska · 16493 days ago · 116 km deep · 19 km away
- 4.341 km NE of Chase, Alaska · 16449 days ago · 101 km deep · 60 km away
- 3.133 km E of Chase, Alaska · 16443 days ago · 33 km deep · 89 km away
- 4.147 km NNE of Petersville, Alaska · 16443 days ago · 101 km deep · 59 km away
- 4.463 km SE of Denali National Park, Alaska · 16442 days ago · 132 km deep · 71 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001et9. Read Tue, Sep 22, 2026, 11:31 PM UTC.