M3.3 earthquake 64 km ESE of Cantwell, Alaska
A magnitude 3.3 earthquake struck 64 km ESE of Cantwell, Alaska on Wed, Sep 2, 1987, 6:38 PM AKDT (02:38 UTC), 0 km (0 mi) below the surface.
A larger quake followed: M4.3 47 km SSW 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
- 3.3 (ml), minor
- Local time
- UTC
- 1987-09-03 02:38:48 UTC
- Depth
- 0.0 km (0.0 mi), shallow
- Epicenter
- 63.168° N, 147.755° 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: 3 in the 60 days after this one and 1 in the 30 days before it.
After
- 3.322 km ENE of Healy, Alaska · 14234 days ago · 33 km deep · 89 km away
- 4.347 km SSW of Cantwell, Alaska · 14213 days ago · 83 km deep · 80 km away
- 4.659 km SW of Harding-Birch Lakes, Alaska · 14213 days ago · 33 km deep · 100 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp000381g. Read Tue, Sep 22, 2026, 8:48 AM UTC.