Alaska earthquakes

M4.4 earthquake 178 km ESE of Atka, Alaska

A magnitude 4.4 earthquake struck 178 km ESE of Atka, Alaska on Fri, Jun 6, 2025, 7:00 PM HADT (04:00 UTC), 30 km (18 mi) below the surface.

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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
4.4 (Mwr, regional moment), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2025-06-07 04:00:30 UTC
Depth
29.7 km (18.5 mi), shallow
Epicenter
51.654° N, 171.762° W
Region
Alaska
Strongest shaking
I, not felt shaking
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
4.4Mwr, regional momentUSGS National Earthquake Information CenterPreferred · Reviewed · ±0.093 · 11 stations
3.9ML, local (Richter)Alaska Earthquake CenterPreliminary

Shaking

The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.

Strongest estimated
I, not felt shaking
Peak ground acceleration
0.0% of gravity
Peak ground velocity
0.0 cm/s
Map
Automatic
USGS ShakeMap: estimated shaking intensity around the epicenter
Estimated shaking intensity. Map: USGS ShakeMap.

Did you feel it?

No one has reported feeling this quake to the USGS.

Fault motion and ground failure

How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.

Faulting
Reverse (thrust)
Moment magnitude
4.4 Mwr
Nodal plane 1
Strike 39°, dip 78°, rake 78°
Nodal plane 2
Strike 266°, dip 17°, rake 135°

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 6.2 km horizontally, 5.5 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
137°
Stations used
85

Nearby

Within 100 km, magnitude 1.5 and up: 23 in the 60 days after this one and 12 in the 30 days before it.

After

  1. 3.6212 km SE of Atka, Alaska · 477 days ago · 10 km deep · 93 km away
  2. 2.997 km E of Atka, Alaska · 472 days ago · 70 km deep · 90 km away
  3. 2.985 km ESE of Atka, Alaska · 466 days ago · 35 km deep · 94 km away
  4. 3.2150 km ESE of Atka, Alaska · 464 days ago · 26 km deep · 32 km away
  5. 2.9145 km ESE of Atka, Alaska · 464 days ago · 35 km deep · 34 km away
  6. 3.4193 km WSW of Nikolski, Alaska · 463 days ago · 70 km deep · 58 km away
  7. 2.8216 km SW of Nikolski, Alaska · 457 days ago · 24 km deep · 54 km away
  8. 2.8121 km E of Atka, Alaska · 456 days ago · 10 km deep · 96 km away
  9. 2.9109 km E of Atka, Alaska · 456 days ago · 10 km deep · 73 km away
  10. 3.3175 km WSW of Nikolski, Alaska · 456 days ago · 35 km deep · 70 km away
  11. 3.2192 km SW of Nikolski, Alaska · 454 days ago · 35 km deep · 52 km away
  12. 2.7145 km SE of Atka, Alaska · 454 days ago · 10 km deep · 89 km away
  13. 2.9121 km E of Atka, Alaska · 453 days ago · 35 km deep · 65 km away
  14. 2.7171 km E of Atka, Alaska · 449 days ago · 80 km deep · 85 km away
  15. 2.792 km E of Atka, Alaska · 448 days ago · 78 km deep · 93 km away
  16. 3.3172 km E of Atka, Alaska · 440 days ago · 125 km deep · 88 km away
  17. 2.8144 km SW of Nikolski, Alaska · 437 days ago · 35 km deep · 100 km away
  18. 2.7177 km SW of Nikolski, Alaska · 432 days ago · 10 km deep · 71 km away
  19. 3.089 km SE of Atka, Alaska · 431 days ago · 32 km deep · 94 km away
  20. 2.2127 km ENE of Atka, Alaska · 430 days ago · 24 km deep · 98 km away
  21. 2.9184 km SW of Nikolski, Alaska · 424 days ago · 41 km deep · 67 km away
  22. 2.1105 km ESE of Atka, Alaska · 423 days ago · 44 km deep · 74 km away
  23. 2.6170 km WSW of Nikolski, Alaska · 422 days ago · 67 km deep · 86 km away

Before

  1. 3.8194 km E of Atka, Alaska · 482 days ago · 35 km deep · 48 km away
  2. 2.1111 km ESE of Atka, Alaska · 483 days ago · 13 km deep · 67 km away
  3. 2.0107 km ESE of Atka, Alaska · 483 days ago · 12 km deep · 71 km away
  4. 2.2117 km ESE of Atka, Alaska · 483 days ago · 26 km deep · 60 km away
  5. 2.7168 km SW of Nikolski, Alaska · 484 days ago · 35 km deep · 76 km away
  6. 2.8119 km ESE of Atka, Alaska · 494 days ago · 35 km deep · 65 km away
  7. 3.1139 km E of Atka, Alaska · 494 days ago · 106 km deep · 72 km away
  8. 3.0185 km ESE of Atka, Alaska · 496 days ago · 35 km deep · 25 km away
  9. 3.8185 km SW of Nikolski, Alaska · 504 days ago · 35 km deep · 58 km away
  10. 3.1187 km WSW of Nikolski, Alaska · 510 days ago · 66 km deep · 77 km away
  11. 3.0193 km ESE of Atka, Alaska · 510 days ago · 35 km deep · 30 km away
  12. 2.7186 km E of Atka, Alaska · 510 days ago · 35 km deep · 35 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000qim5 (also filed as ak02579dao2x). Read Fri, Oct 2, 2026, 8:44 AM UTC.