M4.5 earthquake 18 km W of Point MacKenzie, Alaska
A magnitude 4.5 earthquake struck 18 km W of Point MacKenzie, Alaska on Mon, Aug 25, 1986, 3:27 PM AKDT (23:27 UTC), 47 km (29 mi) below the surface.
A larger quake followed: M4.6 17 km ENE 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
- 4.5 (mb, body-wave), light
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1986-08-25 23:27:54 UTC
- Depth
- 47.2 km (29.3 mi), shallow
- Epicenter
- 61.352° N, 150.333° W
- Region
- Alaska
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
What happened
The USGS’s account of the effects of this earthquake.
Felt (III) at Anchorage, Palmer and Willow. Felt (II) at Talkeetna.
From the USGS event page for usp0002xj0. U.S. Geological Survey text and figures are in the public domain.
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 3 in the 30 days before it.
After
- 3.49 km NE of Willow, Alaska · 14628 days ago · 43 km deep · 56 km away
- 4.617 km ENE of Willow, Alaska · 14622 days ago · 57 km deep · 59 km away
- 4.516 km ESE of Susitna North, Alaska · 14602 days ago · 58 km deep · 96 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002xj0. Read Thu, Oct 1, 2026, 4:15 AM UTC.