Alaska earthquakes

M3.8 earthquake 146 km SW of Nikolski, Alaska

A magnitude 3.8 earthquake struck 146 km SW of Nikolski, Alaska on Mon, Mar 4, 2019, 4:19 AM HAST (14:19 UTC), 18 km (11 mi) below the surface.

A larger quake followed: M4.7 121 km SSW of Nikolski, 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
3.8 (mb, body-wave), minor
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2019-03-04 14:19:17 UTC
Depth
17.8 km (11.1 mi), shallow
Epicenter
52.006° N, 170.385° 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
3.8mb, body-waveUSGS National Earthquake Information CenterPreferred · Reviewed · ±0.098 · 27 stations
3.3ML, 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 5.5 km horizontally, 7.0 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
181°, poorly surrounded by stations
Stations used
48

Nearby

Within 100 km, magnitude 1.5 and up: 19 in the 60 days after this one and 9 in the 30 days before it.

After

  1. 3.9187 km SSW of Nikolski, Alaska · 2769 days ago · 10 km deep · 60 km away
  2. 3.6102 km SSW of Nikolski, Alaska · 2766 days ago · 10 km deep · 78 km away
  3. 2.792 km SSW of Nikolski, Alaska · 2766 days ago · 10 km deep · 80 km away
  4. 3.0139 km SW of Nikolski, Alaska · 2759 days ago · 35 km deep · 18 km away
  5. 3.8173 km ESE of Atka, Alaska · 2758 days ago · 40 km deep · 95 km away
  6. 2.660 km WSW of Nikolski, Alaska · 2756 days ago · 106 km deep · 91 km away
  7. 2.350 km WSW of Nikolski, Alaska · 2755 days ago · 12 km deep · 99 km away
  8. 3.091 km SW of Nikolski, Alaska · 2754 days ago · 9 km deep · 57 km away
  9. 2.559 km SW of Nikolski, Alaska · 2749 days ago · 27 km deep · 87 km away
  10. 3.2192 km SW of Nikolski, Alaska · 2749 days ago · 36 km deep · 49 km away
  11. 4.0109 km SSW of Nikolski, Alaska · 2748 days ago · 35 km deep · 66 km away
  12. 4.1106 km SSW of Nikolski, Alaska · 2748 days ago · 35 km deep · 61 km away
  13. 2.256 km SW of Nikolski, Alaska · 2745 days ago · 14 km deep · 90 km away
  14. 3.0167 km WSW of Nikolski, Alaska · 2740 days ago · 43 km deep · 50 km away
  15. 2.594 km SW of Nikolski, Alaska · 2737 days ago · 5 km deep · 53 km away
  16. 4.7121 km SSW of Nikolski, Alaska · 2735 days ago · 23 km deep · 50 km away
  17. 2.7128 km SSW of Nikolski, Alaska · 2735 days ago · 32 km deep · 49 km away
  18. 3.083 km SW of Nikolski, Alaska · 2734 days ago · 13 km deep · 66 km away
  19. 3.855 km SW of Nikolski, Alaska · 2712 days ago · 11 km deep · 91 km away

Before

  1. 4.1190 km WSW of Nikolski, Alaska · 2771 days ago · 35 km deep · 59 km away
  2. 3.9193 km E of Atka, Alaska · 2779 days ago · 36 km deep · 72 km away
  3. 3.459 km WSW of Nikolski, Alaska · 2787 days ago · 31 km deep · 97 km away
  4. 3.0Fox Islands, Aleutian Islands, Alaska · 2790 days ago · 35 km deep · 35 km away
  5. 3.5122 km SW of Nikolski, Alaska · 2794 days ago · 10 km deep · 24 km away
  6. 3.779 km SW of Nikolski, Alaska · 2794 days ago · 10 km deep · 68 km away
  7. 3.8117 km SSW of Nikolski, Alaska · 2795 days ago · 10 km deep · 73 km away
  8. 3.7180 km E of Atka, Alaska · 2795 days ago · 58 km deep · 81 km away
  9. 4.4180 km E of Atka, Alaska · 2795 days ago · 53 km deep · 82 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us1000jevc (also filed as ak0192wfb1hb). Read Sat, Oct 3, 2026, 9:13 AM UTC.