M3.1 earthquake 12 km SSE of Trapper Creek, Alaska
A magnitude 3.1 earthquake struck 12 km SSE of Trapper Creek, Alaska on Wed, Feb 11, 1987, 6:00 AM AKST (15:00 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M3.8 9 km WNW of Susitna, 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 (ML, local (Richter)), minor
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1987-02-11 15:00:31 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 62.212° N, 150.142° 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.
- Depth from
- OPERATOR_ASSIGNED
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 2 in the 30 days before it.
After
- 3.77 km SSE of Knik, Alaska · 14472 days ago · 39 km deep · 94 km away
- 3.89 km WNW of Susitna, Alaska · 14447 days ago · 58 km deep · 75 km away
- 3.34 km WSW of Meadow Lakes, Alaska · 14443 days ago · 35 km deep · 72 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00032d6. Read Mon, Oct 5, 2026, 8:33 AM UTC.