Alaska earthquakes

M2.8 earthquake 177 km SSE of Adak, Alaska

A magnitude 2.8 earthquake struck 177 km SSE of Adak, Alaska on Thu, Apr 25, 2019, 9:20 AM HADT (18:20 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.6 89 km SE of Adak, Alaska. This one was a foreshock.

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

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The earthquake

Magnitude
2.8 (ML, local (Richter)), micro
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2019-04-25 18:20:48 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
50.530° N, 175.255° 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.

Location uncertainty
About 7.4 km horizontally, 2.0 km in depth
Depth from
Operator assigned
Station coverage gap
280°, poorly surrounded by stations
Stations used
16

Nearby

Within 100 km, magnitude 1.5 and up: 12 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 2.3146 km S of Atka, Alaska · 2710 days ago · 32 km deep · 91 km away
  2. 2.388 km SSE of Adak, Alaska · 2696 days ago · 14 km deep · 94 km away
  3. 3.689 km SE of Adak, Alaska · 2695 days ago · 35 km deep · 90 km away
  4. 2.196 km SE of Adak, Alaska · 2695 days ago · 5 km deep · 81 km away
  5. 2.581 km SSE of Adak, Alaska · 2694 days ago · 22 km deep · 96 km away
  6. 2.5116 km SE of Adak, Alaska · 2694 days ago · 13 km deep · 62 km away
  7. 1.7110 km SSE of Adak, Alaska · 2694 days ago · 11 km deep · 68 km away
  8. 2.379 km SE of Adak, Alaska · 2694 days ago · 0 km deep · 98 km away
  9. 2.4181 km S of Adak, Alaska · 2671 days ago · 26 km deep · 73 km away
  10. 2.5177 km SSW of Atka, Alaska · 2667 days ago · 20 km deep · 38 km away
  11. 3.2179 km S of Adak, Alaska · 2666 days ago · 10 km deep · 75 km away
  12. 2.280 km SSE of Adak, Alaska · 2662 days ago · 8 km deep · 98 km away

Before

  1. 2.9120 km SE of Adak, Alaska · 2717 days ago · 26 km deep · 71 km away
  2. 3.4123 km SE of Adak, Alaska · 2720 days ago · 10 km deep · 69 km away
  3. 2.793 km SSE of Adak, Alaska · 2735 days ago · 26 km deep · 95 km away
  4. 2.8170 km S of Adak, Alaska · 2745 days ago · 10 km deep · 79 km away
  5. 4.1174 km S of Adak, Alaska · 2746 days ago · 10 km deep · 78 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us70003c3s. Read Thu, Oct 1, 2026, 8:22 PM UTC.