Alaska earthquakes

M4.8 earthquake 62 km SW of Unalaska, Alaska

A magnitude 4.8 earthquake struck 62 km SW of Unalaska, Alaska on Fri, Jul 18, 1986, 11:57 PM AKDT (07:57 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M5.0 64 km WSW of Unalaska, Alaska. This one was a foreshock.

Unalaska forecastMore in Alaska

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Open the live map with earthquakes

The earthquake

Magnitude
4.8 (mb), light
Local time
UTC
1986-07-19 07:57:28 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
53.507° N, 167.242° 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 1.8 and up: 18 in the 60 days after this one and 6 in the 30 days before it.

After

  1. 4.257 km SW of Unalaska, Alaska · 14676 days ago · 33 km deep · 5 km away
  2. 5.064 km WSW of Unalaska, Alaska · 14675 days ago · 33 km deep · 16 km away
  3. 4.463 km SW of Unalaska, Alaska · 14675 days ago · 33 km deep · 1 km away
  4. 4.948 km WSW of Unalaska, Alaska · 14675 days ago · 33 km deep · 18 km away
  5. 6.064 km SW of Unalaska, Alaska · 14675 days ago · 33 km deep · 4 km away
  6. 5.1Fox Islands, Aleutian Islands, Alaska · 14675 days ago · 33 km deep · 7 km away
  7. 4.463 km SW of Unalaska, Alaska · 14675 days ago · 33 km deep · 10 km away
  8. 4.350 km SSW of Unalaska, Alaska · 14675 days ago · 33 km deep · 19 km away
  9. 4.586 km ENE of Nikolski, Alaska · 14673 days ago · 33 km deep · 43 km away
  10. 4.3Fox Islands, Aleutian Islands, Alaska · 14670 days ago · 33 km deep · 38 km away
  11. 4.779 km SSW of Unalaska, Alaska · 14668 days ago · 33 km deep · 25 km away
  12. 5.0112 km S of Unalaska, Alaska · 14667 days ago · 33 km deep · 84 km away
  13. 4.763 km SW of Unalaska, Alaska · 14663 days ago · 33 km deep · 9 km away
  14. 4.662 km SW of Unalaska, Alaska · 14662 days ago · 33 km deep · 1 km away
  15. 4.6105 km S of Unalaska, Alaska · 14659 days ago · 33 km deep · 73 km away
  16. 4.560 km WSW of Unalaska, Alaska · 14656 days ago · 33 km deep · 11 km away
  17. 4.857 km SE of Unalaska, Alaska · 14640 days ago · 33 km deep · 92 km away
  18. 4.560 km SW of Unalaska, Alaska · 14629 days ago · 33 km deep · 8 km away

Before

  1. 4.563 km SW of Unalaska, Alaska · 14676 days ago · 33 km deep · 15 km away
  2. 6.051 km SW of Unalaska, Alaska · 14676 days ago · 33 km deep · 11 km away
  3. 5.274 km SE of Unalaska, Alaska · 14676 days ago · 33 km deep · 94 km away
  4. 5.672 km SE of Unalaska, Alaska · 14676 days ago · 33 km deep · 92 km away
  5. 4.458 km WSW of Unalaska, Alaska · 14676 days ago · 33 km deep · 11 km away
  6. 4.657 km WSW of Unalaska, Alaska · 14676 days ago · 33 km deep · 11 km away

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0002w5u. Read Tue, Sep 22, 2026, 8:28 PM UTC.