Alaska earthquakes

M3.0 earthquake 270 km SW of Adak, Alaska

A magnitude 3.0 earthquake struck 270 km SW of Adak, Alaska on Tue, Mar 4, 2025, 9:20 PM GMT-12 (09:20 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M3.5 228 km WSW 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
3.0 (ML, local (Richter)), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2025-03-05 09:20:29 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
50.145° N, 179.352° W
Region
Alaska
Tsunami flag
No
Status
Reviewed by a seismologist

Magnitude estimates

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.ScaleComputed byNotes
3.0ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.115 · 10 stations
3.0ML, local (Richter)Alaska Earthquake CenterPreliminary

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 4.9 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.12
Depth from
Operator assigned
Station coverage gap
270°, poorly surrounded by stations
Stations used
20

Nearby

Within 100 km, magnitude 1.5 and up: 7 in the 60 days after this one and 9 in the 30 days before it.

After

  1. 2.7243 km WSW of Adak, Alaska · 566 days ago · 35 km deep · 99 km away
  2. 3.5228 km WSW of Adak, Alaska · 558 days ago · 10 km deep · 94 km away
  3. 1.9180 km SW of Adak, Alaska · 554 days ago · 7 km deep · 92 km away
  4. 2.9Rat Islands, Aleutian Islands, Alaska · 553 days ago · 10 km deep · 81 km away
  5. 2.1190 km SSW of Adak, Alaska · 552 days ago · 26 km deep · 100 km away
  6. 2.6251 km WSW of Adak, Alaska · 539 days ago · 35 km deep · 95 km away
  7. 2.8south of the Aleutian Islands · 525 days ago · 14 km deep · 94 km away

Before

  1. 3.0252 km SW of Adak, Alaska · 577 days ago · 10 km deep · 22 km away
  2. 2.5248 km WSW of Adak, Alaska · 577 days ago · 20 km deep · 95 km away
  3. 3.0Rat Islands, Aleutian Islands, Alaska · 580 days ago · 10 km deep · 71 km away
  4. 2.7Rat Islands, Aleutian Islands, Alaska · 580 days ago · 10 km deep · 54 km away
  5. 3.0Andreanof Islands, Aleutian Islands, Alaska · 584 days ago · 10 km deep · 42 km away
  6. 2.8244 km SSW of Adak, Alaska · 587 days ago · 10 km deep · 74 km away
  7. 3.0Rat Islands, Aleutian Islands, Alaska · 587 days ago · 10 km deep · 50 km away
  8. 2.8253 km WSW of Adak, Alaska · 590 days ago · 10 km deep · 92 km away
  9. 3.0261 km SW of Adak, Alaska · 595 days ago · 10 km deep · 15 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000q45a (also filed as ak0252xzvgtv). Read Fri, Oct 2, 2026, 8:07 AM UTC.