Alaska earthquakes

M2.2 earthquake 219 km SSE of Unalaska, Alaska

A magnitude 2.2 earthquake struck 219 km SSE of Unalaska, Alaska on Mon, Jul 21, 2025, 3:40 AM AKDT (11:40 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M4.2 213 km S of Unalaska, Alaska. This one was a foreshock.

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Map

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

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The earthquake

Magnitude
2.2 (ml), micro
Local time
UTC
2025-07-21 11:40:14 UTC
Depth
3.4 km (2.1 mi), shallow
Epicenter
52.029° N, 165.363° 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
33

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 10 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 2.2230 km SSE of Unalaska, Alaska · 434 days ago · 1 km deep · 42 km away
  2. 2.4195 km S of Unalaska, Alaska · 430 days ago · 26 km deep · 47 km away
  3. 2.2208 km SSE of Unalaska, Alaska · 429 days ago · 4 km deep · 24 km away
  4. 2.4200 km SSE of Unalaska, Alaska · 422 days ago · 10 km deep · 34 km away
  5. 2.1166 km ESE of Nikolski, Alaska · 421 days ago · 6 km deep · 97 km away
  6. 2.0154 km S of Unalaska, Alaska · 420 days ago · 15 km deep · 99 km away
  7. 2.0151 km SSE of Unalaska, Alaska · 410 days ago · 30 km deep · 69 km away
  8. 2.3219 km SE of Nikolski, Alaska · 407 days ago · 7 km deep · 90 km away
  9. 2.7198 km SE of Nikolski, Alaska · 402 days ago · 10 km deep · 97 km away
  10. 4.2213 km S of Unalaska, Alaska · 379 days ago · 10 km deep · 49 km away

Before

  1. 3.0255 km SSE of Unalaska, Alaska · 439 days ago · 10 km deep · 45 km away
  2. 2.8193 km SSE of Unalaska, Alaska · 439 days ago · 10 km deep · 28 km away
  3. 2.5181 km SSE of Unalaska, Alaska · 443 days ago · 10 km deep · 38 km away
  4. 1.7202 km S of Unalaska, Alaska · 444 days ago · 26 km deep · 58 km away
  5. 1.8184 km SSE of Unalaska, Alaska · 444 days ago · 1 km deep · 38 km away
  6. 2.2197 km SSE of Unalaska, Alaska · 451 days ago · 4 km deep · 33 km away
  7. 2.6198 km ESE of Nikolski, Alaska · 456 days ago · 10 km deep · 66 km away
  8. 2.6206 km SSE of Akutan, Alaska · 465 days ago · 10 km deep · 90 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0259a9ch6d. Read Wed, Sep 30, 2026, 12:50 AM UTC.