Alaska earthquakes

M5.0 earthquake 64 km WSW of Unalaska, Alaska

A magnitude 5.0 earthquake struck 64 km WSW of Unalaska, Alaska on Sat, Jul 19, 1986, 3:31 AM AKDT (11:31 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M6.0 64 km SW of Unalaska, Alaska. This one was a foreshock.

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Map

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

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The earthquake

Magnitude
5.0 (mb), moderate
Local time
UTC
1986-07-19 11:31:07 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
53.617° N, 167.408° 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 2.0 and up: 15 in the 60 days after this one and 6 in the 30 days before it.

After

  1. 4.463 km SW of Unalaska, Alaska · 14675 days ago · 33 km deep · 17 km away
  2. 4.948 km WSW of Unalaska, Alaska · 14675 days ago · 33 km deep · 16 km away
  3. 6.064 km SW of Unalaska, Alaska · 14675 days ago · 33 km deep · 13 km away
  4. 5.1Fox Islands, Aleutian Islands, Alaska · 14675 days ago · 33 km deep · 11 km away
  5. 4.463 km SW of Unalaska, Alaska · 14675 days ago · 33 km deep · 26 km away
  6. 4.350 km SSW of Unalaska, Alaska · 14675 days ago · 33 km deep · 33 km away
  7. 4.586 km ENE of Nikolski, Alaska · 14673 days ago · 33 km deep · 49 km away
  8. 4.3Fox Islands, Aleutian Islands, Alaska · 14671 days ago · 33 km deep · 38 km away
  9. 4.779 km SSW of Unalaska, Alaska · 14668 days ago · 33 km deep · 40 km away
  10. 5.0112 km S of Unalaska, Alaska · 14667 days ago · 33 km deep · 100 km away
  11. 4.763 km SW of Unalaska, Alaska · 14663 days ago · 33 km deep · 25 km away
  12. 4.662 km SW of Unalaska, Alaska · 14662 days ago · 33 km deep · 18 km away
  13. 4.6105 km S of Unalaska, Alaska · 14659 days ago · 33 km deep · 89 km away
  14. 4.560 km WSW of Unalaska, Alaska · 14656 days ago · 33 km deep · 6 km away
  15. 4.560 km SW of Unalaska, Alaska · 14629 days ago · 33 km deep · 24 km away

Before

  1. 4.257 km SW of Unalaska, Alaska · 14676 days ago · 33 km deep · 19 km away
  2. 4.862 km SW of Unalaska, Alaska · 14676 days ago · 33 km deep · 16 km away
  3. 4.563 km SW of Unalaska, Alaska · 14676 days ago · 33 km deep · 32 km away
  4. 6.051 km SW of Unalaska, Alaska · 14676 days ago · 33 km deep · 16 km away
  5. 4.458 km WSW of Unalaska, Alaska · 14676 days ago · 33 km deep · 8 km away
  6. 4.657 km WSW of Unalaska, Alaska · 14676 days ago · 33 km deep · 9 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0002w65. Read Tue, Sep 22, 2026, 11:28 PM UTC.