Alaska earthquakes

M4.4 earthquake 288 km SE of Chiniak, Alaska

A magnitude 4.4 earthquake struck 288 km SE of Chiniak, Alaska on Thu, Mar 8, 2018, 12:47 PM AKST (21:47 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M5.2 228 km SE of Chiniak, Alaska. This one was a foreshock.

More in Alaska

Map

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

Open the live map with earthquakes

The earthquake

Magnitude
4.4 (mwr), light
Local time
UTC
2018-03-08 21:47:57 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
55.635° N, 149.229° W
Region
Alaska
Felt reports
1
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

1 person reported to the USGS what they felt; the strongest reported shaking was II, weak shaking.

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

Fault motion and ground failure

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

Faulting
Oblique reverse
Moment magnitude
4.4 Mwr
Nodal plane 1
Strike 107°, dip 65°, rake 48°
Nodal plane 2
Strike 351°, dip 48°, rake 145°

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 6.8 km horizontally, 1.9 km in depth
Magnitude uncertainty
±0.05
Depth from
Operator assigned
Station coverage gap
175°
Stations used
210

Nearby

Within 100 km, magnitude 1.5 and up: at least 201 in the 60 days after this one and at least 200 in the 30 days before it.

After

  1. 4.4294 km SE of Chiniak, Alaska · 3125 days ago · 12 km deep · 6 km away
  2. 3.7Gulf of Alaska · 3125 days ago · 7 km deep · 15 km away
  3. 3.2294 km SE of Chiniak, Alaska · 3125 days ago · 8 km deep · 5 km away
  4. 3.6293 km SE of Chiniak, Alaska · 3125 days ago · 12 km deep · 4 km away
  5. 3.1293 km SE of Chiniak, Alaska · 3125 days ago · 7 km deep · 5 km away
  6. 5.0289 km SE of Chiniak, Alaska · 3124 days ago · 17 km deep · 1 km away · tsunami flag
  7. 3.2285 km SE of Chiniak, Alaska · 3124 days ago · 8 km deep · 3 km away
  8. 4.0293 km SE of Chiniak, Alaska · 3124 days ago · 7 km deep · 7 km away
  9. 4.6287 km SE of Chiniak, Alaska · 3124 days ago · 6 km deep · 2 km away
  10. 3.5278 km SE of Chiniak, Alaska · 3124 days ago · 10 km deep · 11 km away
  11. 3.4279 km SE of Chiniak, Alaska · 3124 days ago · 20 km deep · 65 km away
  12. 3.4230 km SE of Chiniak, Alaska · 3124 days ago · 20 km deep · 59 km away
  13. 3.3243 km SE of Chiniak, Alaska · 3124 days ago · 24 km deep · 67 km away
  14. 3.6229 km SE of Chiniak, Alaska · 3124 days ago · 23 km deep · 59 km away
  15. 3.3221 km SE of Chiniak, Alaska · 3124 days ago · 22 km deep · 68 km away
  16. 3.1207 km SE of Chiniak, Alaska · 3124 days ago · 22 km deep · 88 km away
  17. 4.2Gulf of Alaska · 3124 days ago · 8 km deep · 20 km away · felt by 1
  18. 3.8277 km ESE of Chiniak, Alaska · 3124 days ago · 21 km deep · 95 km away
  19. 3.0218 km SE of Chiniak, Alaska · 3124 days ago · 20 km deep · 72 km away · felt by 1
  20. 3.3224 km SE of Chiniak, Alaska · 3124 days ago · 12 km deep · 65 km away
  21. 3.0259 km ESE of Chiniak, Alaska · 3124 days ago · 21 km deep · 98 km away
  22. 3.2284 km SE of Chiniak, Alaska · 3124 days ago · 8 km deep · 5 km away
  23. 3.3239 km SE of Chiniak, Alaska · 3124 days ago · 10 km deep · 54 km away
  24. 3.1220 km SE of Chiniak, Alaska · 3124 days ago · 21 km deep · 96 km away
  25. 2.8238 km SE of Chiniak, Alaska · 3123 days ago · 8 km deep · 50 km away
  26. 2.9253 km SE of Chiniak, Alaska · 3123 days ago · 21 km deep · 46 km away
  27. 3.4257 km SE of Chiniak, Alaska · 3123 days ago · 21 km deep · 76 km away
  28. 2.7221 km SE of Chiniak, Alaska · 3123 days ago · 21 km deep · 89 km away
  29. 3.0221 km SE of Chiniak, Alaska · 3123 days ago · 21 km deep · 100 km away
  30. 2.9254 km SE of Chiniak, Alaska · 3123 days ago · 21 km deep · 47 km away
  31. 3.1229 km SE of Chiniak, Alaska · 3123 days ago · 20 km deep · 59 km away
  32. 3.0234 km SE of Chiniak, Alaska · 3123 days ago · 7 km deep · 57 km away
  33. 3.1260 km SE of Chiniak, Alaska · 3123 days ago · 7 km deep · 28 km away
  34. 3.0236 km SE of Chiniak, Alaska · 3123 days ago · 7 km deep · 56 km away
  35. 3.4274 km SE of Chiniak, Alaska · 3123 days ago · 9 km deep · 16 km away
  36. 2.8290 km SE of Chiniak, Alaska · 3123 days ago · 7 km deep · 2 km away
  37. 3.3268 km SE of Chiniak, Alaska · 3123 days ago · 9 km deep · 23 km away
  38. 3.4253 km ESE of Chiniak, Alaska · 3123 days ago · 22 km deep · 98 km away
  39. 2.9221 km SE of Chiniak, Alaska · 3123 days ago · 21 km deep · 68 km away
  40. 3.1242 km ESE of Chiniak, Alaska · 3123 days ago · 10 km deep · 95 km away
  41. 2.7230 km SE of Chiniak, Alaska · 3123 days ago · 4 km deep · 62 km away
  42. 2.9246 km SE of Chiniak, Alaska · 3123 days ago · 10 km deep · 52 km away
  43. 3.0265 km SE of Chiniak, Alaska · 3123 days ago · 23 km deep · 70 km away
  44. 2.7Gulf of Alaska · 3123 days ago · 21 km deep · 49 km away
  45. 3.0224 km SE of Chiniak, Alaska · 3123 days ago · 20 km deep · 73 km away
  46. 2.9220 km SE of Chiniak, Alaska · 3123 days ago · 21 km deep · 93 km away
  47. 3.3243 km SE of Chiniak, Alaska · 3123 days ago · 9 km deep · 49 km away
  48. 2.8233 km SE of Chiniak, Alaska · 3122 days ago · 20 km deep · 66 km away
  49. 3.1226 km SE of Chiniak, Alaska · 3122 days ago · 20 km deep · 66 km away
  50. 2.8240 km SE of Chiniak, Alaska · 3122 days ago · 21 km deep · 61 km away
  51. 3.2242 km ESE of Chiniak, Alaska · 3122 days ago · 23 km deep · 94 km away
  52. 2.9249 km SE of Chiniak, Alaska · 3122 days ago · 20 km deep · 50 km away
  53. 2.8223 km SE of Chiniak, Alaska · 3122 days ago · 21 km deep · 91 km away
  54. 2.9235 km SE of Chiniak, Alaska · 3122 days ago · 20 km deep · 53 km away
  55. 2.7219 km SE of Chiniak, Alaska · 3122 days ago · 20 km deep · 71 km away
  56. 4.3247 km SE of Chiniak, Alaska · 3122 days ago · 21 km deep · 53 km away
  57. 3.4231 km SE of Chiniak, Alaska · 3122 days ago · 19 km deep · 84 km away
  58. 3.4212 km SE of Chiniak, Alaska · 3122 days ago · 10 km deep · 77 km away
  59. 3.2234 km SE of Chiniak, Alaska · 3122 days ago · 10 km deep · 60 km away
  60. 2.7211 km SE of Chiniak, Alaska · 3122 days ago · 10 km deep · 77 km away

The first 60 of at least 201.

Before

  1. 3.1249 km SE of Chiniak, Alaska · 3125 days ago · 22 km deep · 85 km away
  2. 2.9214 km SE of Chiniak, Alaska · 3125 days ago · 10 km deep · 74 km away
  3. 2.9256 km SE of Chiniak, Alaska · 3125 days ago · 10 km deep · 41 km away
  4. 2.7216 km SE of Chiniak, Alaska · 3125 days ago · 10 km deep · 73 km away
  5. 2.7230 km SE of Chiniak, Alaska · 3125 days ago · 21 km deep · 84 km away
  6. 2.9254 km SE of Chiniak, Alaska · 3125 days ago · 21 km deep · 42 km away
  7. 3.2233 km SE of Chiniak, Alaska · 3125 days ago · 21 km deep · 55 km away
  8. 3.0276 km ESE of Chiniak, Alaska · 3125 days ago · 20 km deep · 96 km away
  9. 3.1233 km SE of Chiniak, Alaska · 3125 days ago · 20 km deep · 67 km away
  10. 3.1253 km ESE of Chiniak, Alaska · 3125 days ago · 20 km deep · 97 km away
  11. 3.1273 km ESE of Chiniak, Alaska · 3125 days ago · 24 km deep · 96 km away
  12. 3.7256 km SE of Chiniak, Alaska · 3125 days ago · 22 km deep · 45 km away
  13. 4.4278 km SE of Chiniak, Alaska · 3125 days ago · 8 km deep · 15 km away
  14. 3.2228 km SE of Chiniak, Alaska · 3125 days ago · 22 km deep · 89 km away
  15. 3.2233 km SE of Chiniak, Alaska · 3125 days ago · 20 km deep · 72 km away
  16. 3.0214 km SE of Chiniak, Alaska · 3125 days ago · 25 km deep · 75 km away
  17. 2.9250 km SE of Chiniak, Alaska · 3126 days ago · 21 km deep · 85 km away
  18. 3.4206 km SE of Chiniak, Alaska · 3126 days ago · 33 km deep · 83 km away
  19. 4.0253 km SE of Chiniak, Alaska · 3126 days ago · 10 km deep · 82 km away
  20. 3.4227 km SE of Chiniak, Alaska · 3126 days ago · 10 km deep · 72 km away

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000d1sj (also filed as ak18632879). Read Sun, Sep 27, 2026, 11:42 AM UTC.