M3.7 earthquake 7 km SSE of Knik, Alaska
A magnitude 3.7 earthquake struck 7 km SSE of Knik, Alaska on Thu, Feb 19, 1987, 1:30 PM AKST (22:30 UTC), 39 km (24 mi) below the surface.
A larger quake followed: M5.3 20 km SSW 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
- 3.7 (ml), minor
- Local time
- UTC
- 1987-02-19 22:30:47 UTC
- Depth
- 39.2 km (24.4 mi), shallow
- Epicenter
- 61.394° N, 149.702° 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: 5 in the 60 days after this one and 1 in the 30 days before it.
After
- 3.05 km N of Hope, Alaska · 14449 days ago · 39 km deep · 48 km away
- 3.89 km WNW of Susitna, Alaska · 14442 days ago · 58 km deep · 56 km away
- 3.34 km WSW of Meadow Lakes, Alaska · 14439 days ago · 35 km deep · 24 km away
- 5.320 km SSW of Susitna, Alaska · 14411 days ago · 68 km deep · 51 km away
- 4.420 km SSW of Susitna, Alaska · 14411 days ago · 66 km deep · 49 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00032md. Read Wed, Sep 30, 2026, 10:05 PM UTC.