Alaska earthquakes

M4.5 earthquake 103 km SSE of Adak, Alaska

A magnitude 4.5 earthquake struck 103 km SSE of Adak, Alaska on Wed, Nov 19, 1986, 9:00 AM HAST (19:00 UTC), 33 km (21 mi) below the surface.

A larger quake followed: M5.2 90 km ESE of Adak, Alaska. This one was a foreshock.

More 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
4.5 (ML, local (Richter)), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1986-11-19 19:00:11 UTC
Depth
33.0 km (20.5 mi), shallow
Epicenter
51.036° N, 176.001° 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

Nearby

Within 100 km, magnitude 1.5 and up: 8 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 4.670 km S of Adak, Alaska · 14547 days ago · 33 km deep · 40 km away
  2. 5.290 km ESE of Adak, Alaska · 14534 days ago · 33 km deep · 78 km away
  3. 5.146 km SSW of Adak, Alaska · 14531 days ago · 33 km deep · 86 km away
  4. 4.687 km SE of Adak, Alaska · 14520 days ago · 33 km deep · 27 km away
  5. 4.969 km SW of Adak, Alaska · 14515 days ago · 33 km deep · 99 km away
  6. 5.065 km ESE of Adak, Alaska · 14507 days ago · 33 km deep · 62 km away
  7. 4.7100 km ESE of Adak, Alaska · 14507 days ago · 33 km deep · 56 km away
  8. 4.681 km SSE of Adak, Alaska · 14503 days ago · 33 km deep · 22 km away

Before

  1. 4.991 km SSW of Atka, Alaska · 14569 days ago · 33 km deep · 97 km away
  2. 4.792 km S of Adak, Alaska · 14570 days ago · 33 km deep · 28 km away
  3. 4.864 km SSE of Adak, Alaska · 14574 days ago · 33 km deep · 43 km away
  4. 5.945 km S of Adak, Alaska · 14574 days ago · 33 km deep · 68 km away
  5. 4.7174 km SSE of Adak, Alaska · 14574 days ago · 33 km deep · 74 km away
  6. 4.868 km SE of Adak, Alaska · 14580 days ago · 33 km deep · 55 km away
  7. 4.7102 km SSE of Adak, Alaska · 14586 days ago · 33 km deep · 8 km away
  8. 5.254 km SSW of Adak, Alaska · 14587 days ago · 33 km deep · 72 km away

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0003066. Read Thu, Oct 1, 2026, 9:38 AM UTC.