M3.5 earthquake 21 km WNW of Tatitlek, Alaska
A magnitude 3.5 earthquake struck 21 km WNW of Tatitlek, Alaska on Sat, Jul 18, 1987, 10:17 AM AKDT (18:17 UTC), 18 km (11 mi) below the surface.
A larger quake followed: M3.7 Southern Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.5 (ml), minor
- Local time
- UTC
- 1987-07-18 18:17:14 UTC
- Depth
- 17.6 km (10.9 mi), shallow
- Epicenter
- 60.963° N, 147.012° 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: 2 in the 60 days after this one and 2 in the 30 days before it.
After
- 3.054 km WSW of Tatitlek, Alaska · 14280 days ago · 18 km deep · 47 km away
- 3.7Southern Alaska · 14276 days ago · 18 km deep · 49 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00036rr. Read Tue, Sep 22, 2026, 6:10 AM UTC.