Alaska earthquakes

M4.4 earthquake 72 km S of Adak, Alaska

A magnitude 4.4 earthquake struck 72 km S of Adak, Alaska on Sun, Feb 15, 1998, 11:45 AM HAST (21:45 UTC), 58 km (36 mi) below the surface.

A larger quake followed: M4.5 71 km SSW of Adak, Alaska. This one was a foreshock.

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The earthquake

Magnitude
4.4 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
1998-02-15 21:45:31 UTC
Depth
57.5 km (35.7 mi), shallow
Epicenter
51.223° N, 176.605° 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
CONSTRAINED_BY_DEPTH_PHASES

Nearby

Within 100 km, magnitude 1.5 and up: 7 in the 60 days after this one and 6 in the 30 days before it.

After

  1. 4.571 km SSW of Adak, Alaska · 10453 days ago · 33 km deep · 30 km away
  2. 4.440 km E of Adak, Alaska · 10444 days ago · 48 km deep · 85 km away
  3. 4.558 km SSW of Adak, Alaska · 10423 days ago · 33 km deep · 25 km away
  4. 4.549 km SSW of Adak, Alaska · 10423 days ago · 33 km deep · 37 km away
  5. 4.424 km WSW of Adak, Alaska · 10419 days ago · 56 km deep · 72 km away
  6. 3.456 km E of Adak, Alaska · 10414 days ago · 33 km deep · 99 km away
  7. 3.876 km SSW of Adak, Alaska · 10411 days ago · 33 km deep · 44 km away

Before

  1. 3.493 km S of Adak, Alaska · 10457 days ago · 33 km deep · 24 km away
  2. 3.391 km SSW of Adak, Alaska · 10457 days ago · 33 km deep · 33 km away
  3. 3.8Andreanof Islands, Aleutian Islands, Alaska · 10458 days ago · 33 km deep · 71 km away
  4. 4.640 km ESE of Adak, Alaska · 10458 days ago · 43 km deep · 63 km away
  5. 4.3109 km SE of Adak, Alaska · 10469 days ago · 33 km deep · 89 km away
  6. 4.888 km WSW of Adak, Alaska · 10474 days ago · 42 km deep · 85 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0008g1s. Read Fri, Oct 2, 2026, 7:54 AM UTC.