Alaska earthquakes

M3.5 earthquake 125 km E of Atka, Alaska

A magnitude 3.5 earthquake struck 125 km E of Atka, Alaska on Wed, Jan 2, 2019, 9:43 PM HAST (07:43 UTC), 12 km (7 mi) below the surface.

A larger quake followed: M4.5 73 km SE of Atka, Alaska. This one was a foreshock.

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

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The earthquake

Magnitude
3.5 (ML, local (Richter)), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2019-01-03 07:43:41 UTC
Depth
11.7 km (7.3 mi), shallow
Epicenter
52.134° N, 172.366° W
Region
Alaska
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
3.5ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed · ±0.148 · 6 stations
3.1ML, local (Richter)Alaska Earthquake CenterPreliminary

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 6.8 km horizontally, 9.8 km in depth
Magnitude uncertainty
±0.15
Depth from
From location
Station coverage gap
199°, poorly surrounded by stations
Stations used
22

Nearby

Within 100 km, magnitude 1.5 and up: 13 in the 60 days after this one and 12 in the 30 days before it.

After

  1. 3.665 km E of Atka, Alaska · 2827 days ago · 100 km deep · 63 km away
  2. 2.886 km ESE of Atka, Alaska · 2814 days ago · 35 km deep · 66 km away
  3. 2.231 km ESE of Atka, Alaska · 2809 days ago · 60 km deep · 96 km away
  4. 3.3172 km W of Nikolski, Alaska · 2806 days ago · 93 km deep · 90 km away
  5. 3.7148 km ENE of Atka, Alaska · 2795 days ago · 107 km deep · 68 km away
  6. 4.4180 km E of Atka, Alaska · 2793 days ago · 53 km deep · 54 km away
  7. 3.7180 km E of Atka, Alaska · 2793 days ago · 58 km deep · 55 km away
  8. 3.164 km SE of Atka, Alaska · 2784 days ago · 35 km deep · 89 km away
  9. 4.573 km SE of Atka, Alaska · 2779 days ago · 45 km deep · 74 km away
  10. 4.0104 km SE of Atka, Alaska · 2779 days ago · 33 km deep · 96 km away
  11. 3.9193 km E of Atka, Alaska · 2776 days ago · 36 km deep · 69 km away
  12. 3.478 km SE of Atka, Alaska · 2770 days ago · 35 km deep · 86 km away
  13. 4.1190 km WSW of Nikolski, Alaska · 2769 days ago · 35 km deep · 78 km away

Before

  1. 3.3181 km WSW of Nikolski, Alaska · 2831 days ago · 35 km deep · 86 km away
  2. 2.5112 km E of Atka, Alaska · 2835 days ago · 38 km deep · 31 km away
  3. 2.6107 km E of Atka, Alaska · 2835 days ago · 10 km deep · 25 km away
  4. 2.9187 km E of Atka, Alaska · 2837 days ago · 123 km deep · 64 km away
  5. 2.392 km SE of Atka, Alaska · 2839 days ago · 13 km deep · 68 km away
  6. 2.049 km ENE of Atka, Alaska · 2841 days ago · 6 km deep · 82 km away
  7. 2.179 km ESE of Atka, Alaska · 2846 days ago · 33 km deep · 66 km away
  8. 2.642 km E of Atka, Alaska · 2848 days ago · 131 km deep · 84 km away
  9. 3.1108 km ENE of Atka, Alaska · 2851 days ago · 146 km deep · 48 km away
  10. 1.848 km E of Atka, Alaska · 2854 days ago · 16 km deep · 77 km away
  11. 2.840 km E of Atka, Alaska · 2856 days ago · 35 km deep · 85 km away
  12. 4.0177 km ESE of Atka, Alaska · 2856 days ago · 37 km deep · 63 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000j361 (also filed as ak019531dpu). Read Thu, Oct 1, 2026, 5:53 AM UTC.