M4.6 earthquake 40 km WSW of Healy, Alaska
A magnitude 4.6 earthquake struck 40 km WSW of Healy, Alaska on Thu, Jun 20, 1985, 12:50 AM AKDT (08:50 UTC), 120 km (75 mi) below the surface.
A larger quake followed: M4.8 60 km WSW of Ferry, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.6 (mb), light
- Local time
- UTC
- 1985-06-20 08:50:33 UTC
- Depth
- 120.0 km (74.6 mi), intermediate-depth
- Epicenter
- 63.731° N, 149.745° 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 1.6 and up: 4 in the 60 days after this one and 4 in the 30 days before it.
After
- 4.860 km WSW of Ferry, Alaska · 15063 days ago · 143 km deep · 21 km away
- 3.223 km ESE of Denali National Park, Alaska · 15060 days ago · 33 km deep · 79 km away
- 3.725 km ESE of Denali National Park, Alaska · 15057 days ago · 33 km deep · 81 km away
- 4.452 km SSW of Cantwell, Alaska · 15025 days ago · 92 km deep · 83 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002g04. Read Tue, Sep 22, 2026, 12:14 PM UTC.