Alaska earthquakes

M4.4 earthquake 187 km S of Atka, Alaska

A magnitude 4.4 earthquake struck 187 km S of Atka, Alaska on Sun, Jul 24, 2022, 3:48 AM HADT (12:48 UTC), 10 km (6 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 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2022-07-24 12:48:19 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
50.516° N, 173.998° 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
4.4mb, body-waveUSGS National Earthquake Information CenterPreferred · Reviewed · ±0.036 · 220 stations
4.4mb, body-waveAlaska 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
-5.1 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.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 6.3 km horizontally, 1.8 km in depth
Magnitude uncertainty
±0.04
Depth from
Operator assigned
Station coverage gap
136°
Stations used
101

Nearby

Within 100 km, magnitude 1.5 and up: 35 in the 60 days after this one and 13 in the 30 days before it.

After

  1. 1.9162 km SSE of Atka, Alaska · 1529 days ago · 10 km deep · 37 km away
  2. 2.0113 km SSE of Atka, Alaska · 1528 days ago · 21 km deep · 89 km away
  3. 2.2108 km SSE of Atka, Alaska · 1527 days ago · 5 km deep · 93 km away
  4. 2.1106 km SSE of Atka, Alaska · 1527 days ago · 8 km deep · 95 km away
  5. 2.1179 km SE of Adak, Alaska · 1526 days ago · 8 km deep · 79 km away
  6. 3.0159 km SSE of Atka, Alaska · 1526 days ago · 10 km deep · 55 km away
  7. 2.0116 km S of Atka, Alaska · 1526 days ago · 7 km deep · 73 km away
  8. 2.9199 km SSE of Atka, Alaska · 1524 days ago · 10 km deep · 54 km away
  9. 2.890 km S of Atka, Alaska · 1521 days ago · 35 km deep · 98 km away
  10. 2.8109 km SSE of Atka, Alaska · 1520 days ago · 35 km deep · 97 km away
  11. 2.5191 km S of Atka, Alaska · 1520 days ago · 10 km deep · 15 km away
  12. 2.0Andreanof Islands, Aleutian Islands, Alaska · 1518 days ago · 6 km deep · 33 km away
  13. 2.2197 km SSE of Adak, Alaska · 1518 days ago · 23 km deep · 92 km away
  14. 1.8110 km SSE of Atka, Alaska · 1517 days ago · 62 km deep · 94 km away
  15. 1.5150 km S of Atka, Alaska · 1517 days ago · 21 km deep · 38 km away
  16. 1.6100 km SSE of Atka, Alaska · 1516 days ago · 5 km deep · 90 km away
  17. 1.8156 km S of Atka, Alaska · 1516 days ago · 5 km deep · 31 km away
  18. 2.1166 km S of Atka, Alaska · 1514 days ago · 19 km deep · 28 km away
  19. 1.8121 km SSE of Atka, Alaska · 1511 days ago · 22 km deep · 69 km away
  20. 2.2168 km SSE of Atka, Alaska · 1511 days ago · 26 km deep · 62 km away
  21. 2.1173 km S of Atka, Alaska · 1510 days ago · 5 km deep · 15 km away
  22. 1.6124 km S of Atka, Alaska · 1509 days ago · 8 km deep · 67 km away
  23. 1.8196 km S of Atka, Alaska · 1509 days ago · 25 km deep · 41 km away
  24. 3.297 km S of Atka, Alaska · 1506 days ago · 7 km deep · 94 km away
  25. 2.3187 km SE of Adak, Alaska · 1503 days ago · 22 km deep · 66 km away
  26. 2.8100 km S of Atka, Alaska · 1502 days ago · 10 km deep · 91 km away
  27. 2.196 km S of Atka, Alaska · 1502 days ago · 29 km deep · 93 km away
  28. 2.1192 km SSE of Adak, Alaska · 1502 days ago · 5 km deep · 82 km away
  29. 1.9101 km SSE of Atka, Alaska · 1501 days ago · 16 km deep · 97 km away
  30. 2.9186 km SSE of Atka, Alaska · 1500 days ago · 38 km deep · 65 km away
  31. 2.3157 km SSE of Atka, Alaska · 1498 days ago · 26 km deep · 63 km away
  32. 2.7209 km SSE of Adak, Alaska · 1492 days ago · 18 km deep · 74 km away
  33. 3.0202 km SSE of Atka, Alaska · 1490 days ago · 10 km deep · 92 km away
  34. 2.4130 km S of Atka, Alaska · 1486 days ago · 9 km deep · 58 km away
  35. 2.7Andreanof Islands, Aleutian Islands, Alaska · 1479 days ago · 10 km deep · 19 km away

Before

  1. 3.1186 km SSE of Atka, Alaska · 1536 days ago · 10 km deep · 51 km away
  2. 1.9158 km S of Atka, Alaska · 1537 days ago · 5 km deep · 31 km away
  3. 2.4141 km SSE of Atka, Alaska · 1540 days ago · 10 km deep · 79 km away
  4. 1.7Andreanof Islands, Aleutian Islands, Alaska · 1541 days ago · 20 km deep · 6 km away
  5. 2.0181 km S of Atka, Alaska · 1542 days ago · 31 km deep · 9 km away
  6. 2.0148 km S of Atka, Alaska · 1542 days ago · 28 km deep · 39 km away
  7. 2.8121 km SSE of Atka, Alaska · 1542 days ago · 35 km deep · 91 km away
  8. 1.9188 km S of Atka, Alaska · 1548 days ago · 10 km deep · 19 km away
  9. 1.8124 km SSE of Atka, Alaska · 1548 days ago · 4 km deep · 77 km away
  10. 2.5157 km SSE of Atka, Alaska · 1554 days ago · 10 km deep · 72 km away
  11. 1.7104 km S of Atka, Alaska · 1555 days ago · 25 km deep · 85 km away
  12. 2.5113 km S of Atka, Alaska · 1557 days ago · 10 km deep · 74 km away
  13. 2.7Andreanof Islands, Aleutian Islands, Alaska · 1558 days ago · 36 km deep · 22 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000ht4t (also filed as ak0229f8lofs). Read Fri, Oct 2, 2026, 12:32 PM UTC.