Alaska earthquakes

M4.9 earthquake 95 km WSW of Adak, Alaska

A magnitude 4.9 earthquake struck 95 km WSW of Adak, Alaska on Thu, Jul 22, 1976, 4:30 AM GMT-10 (14:30 UTC), 58 km (36 mi) below the surface.

A larger quake followed: M5.1 127 km WSW 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
4.9 (mb), light
Local time
UTC
1976-07-22 14:30:17 UTC
Depth
58.0 km (36.0 mi), shallow
Epicenter
51.485° N, 177.857° 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.

Stations used
54

Nearby

Within 100 km, magnitude 1.9 and up: 5 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 5.1127 km WSW of Adak, Alaska · 18299 days ago · 65 km deep · 36 km away
  2. 4.8106 km WSW of Adak, Alaska · 18299 days ago · 55 km deep · 13 km away
  3. 4.2132 km WSW of Adak, Alaska · 18294 days ago · 57 km deep · 44 km away
  4. 5.0107 km SW of Adak, Alaska · 18287 days ago · 39 km deep · 30 km away
  5. 4.4157 km WSW of Adak, Alaska · 18279 days ago · 68 km deep · 64 km away

Before

  1. 5.2184 km WSW of Adak, Alaska · 18341 days ago · 54 km deep · 92 km away
  2. 4.6185 km WSW of Adak, Alaska · 18341 days ago · 61 km deep · 92 km away
  3. 4.0178 km WSW of Adak, Alaska · 18341 days ago · 56 km deep · 89 km away

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0000hfj. Read Tue, Sep 22, 2026, 10:52 AM UTC.