Alaska earthquakes

M4.7 earthquake 79 km SSW of Unalaska, Alaska

A magnitude 4.7 earthquake struck 79 km SSW of Unalaska, Alaska on Sat, Jul 26, 1986, 10:52 AM AKDT (18:52 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M5.0 112 km S 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
4.7 (mb), light
Local time
UTC
1986-07-26 18:52:44 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
53.280° N, 167.191° 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 1.7 and up: 9 in the 60 days after this one and 17 in the 30 days before it.

After

  1. 5.0112 km S of Unalaska, Alaska · 14667 days ago · 33 km deep · 61 km away
  2. 4.763 km SW of Unalaska, Alaska · 14663 days ago · 33 km deep · 18 km away
  3. 4.662 km SW of Unalaska, Alaska · 14662 days ago · 33 km deep · 24 km away
  4. 4.347 km ESE of Nikolski, Alaska · 14661 days ago · 33 km deep · 86 km away
  5. 4.6105 km S of Unalaska, Alaska · 14659 days ago · 33 km deep · 50 km away
  6. 4.560 km WSW of Unalaska, Alaska · 14656 days ago · 33 km deep · 36 km away
  7. 4.857 km SE of Unalaska, Alaska · 14641 days ago · 33 km deep · 93 km away
  8. 4.560 km SW of Unalaska, Alaska · 14629 days ago · 33 km deep · 21 km away
  9. 4.657 km SW of Unalaska, Alaska · 14613 days ago · 33 km deep · 33 km away

Before

  1. 4.3Fox Islands, Aleutian Islands, Alaska · 14671 days ago · 33 km deep · 36 km away
  2. 4.586 km ENE of Nikolski, Alaska · 14673 days ago · 33 km deep · 32 km away
  3. 4.350 km SSW of Unalaska, Alaska · 14675 days ago · 33 km deep · 29 km away
  4. 4.463 km SW of Unalaska, Alaska · 14675 days ago · 33 km deep · 17 km away
  5. 5.1Fox Islands, Aleutian Islands, Alaska · 14675 days ago · 33 km deep · 30 km away
  6. 6.064 km SW of Unalaska, Alaska · 14675 days ago · 33 km deep · 28 km away
  7. 4.948 km WSW of Unalaska, Alaska · 14675 days ago · 33 km deep · 42 km away
  8. 4.463 km SW of Unalaska, Alaska · 14675 days ago · 33 km deep · 24 km away
  9. 5.064 km WSW of Unalaska, Alaska · 14676 days ago · 33 km deep · 40 km away
  10. 4.257 km SW of Unalaska, Alaska · 14676 days ago · 33 km deep · 28 km away
  11. 4.862 km SW of Unalaska, Alaska · 14676 days ago · 33 km deep · 25 km away
  12. 4.563 km SW of Unalaska, Alaska · 14676 days ago · 33 km deep · 15 km away
  13. 6.051 km SW of Unalaska, Alaska · 14676 days ago · 33 km deep · 36 km away
  14. 5.274 km SE of Unalaska, Alaska · 14676 days ago · 33 km deep · 89 km away
  15. 5.672 km SE of Unalaska, Alaska · 14676 days ago · 33 km deep · 87 km away
  16. 4.458 km WSW of Unalaska, Alaska · 14676 days ago · 33 km deep · 36 km away
  17. 4.657 km WSW of Unalaska, Alaska · 14676 days ago · 33 km deep · 36 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0002wjf. Read Wed, Sep 23, 2026, 12:52 AM UTC.