Alaska earthquakes

M4.0 earthquake 299 km SE of Chiniak, Alaska

A magnitude 4.0 earthquake struck 299 km SE of Chiniak, Alaska on Tue, Jan 10, 2023, 12:05 AM AKST (09:05 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.2 214 km SE of Chiniak, 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
4.0 (mb), light
Local time
UTC
2023-01-10 09:05:47 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
55.506° N, 149.259° W
Region
Alaska
Felt reports
1
Strongest shaking
I, not felt shaking
Tsunami flag
No
Status
Reviewed by a seismologist

Shaking

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

Map
Automatic
USGS ShakeMap: estimated shaking intensity around the epicenter
Estimated shaking intensity. Map: USGS ShakeMap.

Did you feel it?

1 person reported to the USGS what they felt; the strongest reported shaking was I, not felt shaking.

Did You Feel It? map: shaking reported by the public
Shaking reported by the public, by area. Map: USGS Did You Feel It?

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 6.7 km horizontally, 1.9 km in depth
Magnitude uncertainty
±0.18
Depth from
Operator assigned
Station coverage gap
184°, poorly surrounded by stations
Stations used
45

Nearby

Within 100 km, magnitude 1.5 and up: 17 in the 60 days after this one and 2 in the 30 days before it.

After

  1. 3.0Gulf of Alaska · 1357 days ago · 13 km deep · 8 km away
  2. 2.8223 km SE of Chiniak, Alaska · 1355 days ago · 10 km deep · 75 km away
  3. 3.1229 km SE of Chiniak, Alaska · 1355 days ago · 14 km deep · 73 km away
  4. 3.2251 km SE of Chiniak, Alaska · 1351 days ago · 10 km deep · 84 km away
  5. 3.0221 km SE of Chiniak, Alaska · 1350 days ago · 14 km deep · 78 km away
  6. 4.2214 km SE of Chiniak, Alaska · 1348 days ago · 10 km deep · 89 km away
  7. 3.4234 km SE of Chiniak, Alaska · 1348 days ago · 15 km deep · 82 km away
  8. 3.0240 km SE of Chiniak, Alaska · 1341 days ago · 10 km deep · 83 km away
  9. 2.6Gulf of Alaska · 1339 days ago · 10 km deep · 73 km away
  10. 2.4239 km SE of Chiniak, Alaska · 1334 days ago · 10 km deep · 67 km away
  11. 3.3Gulf of Alaska · 1330 days ago · 15 km deep · 83 km away
  12. 2.9255 km SE of Chiniak, Alaska · 1309 days ago · 18 km deep · 100 km away
  13. 3.3241 km SE of Chiniak, Alaska · 1306 days ago · 10 km deep · 75 km away
  14. 3.2236 km SE of Chiniak, Alaska · 1302 days ago · 10 km deep · 87 km away
  15. 2.5241 km SE of Chiniak, Alaska · 1302 days ago · 10 km deep · 90 km away
  16. 2.7226 km SE of Chiniak, Alaska · 1301 days ago · 16 km deep · 78 km away
  17. 2.5Gulf of Alaska · 1300 days ago · 15 km deep · 70 km away

Before

  1. 3.3275 km SE of Chiniak, Alaska · 1364 days ago · 13 km deep · 31 km away
  2. 2.8210 km SE of Chiniak, Alaska · 1365 days ago · 10 km deep · 89 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000j3d3 (also filed as ak023gorjsh). Read Tue, Sep 29, 2026, 6:47 AM UTC.