Alaska earthquakes

M4.0 earthquake 160 km SW of Nikolski, Alaska

A magnitude 4.0 earthquake struck 160 km SW of Nikolski, Alaska on Wed, May 22, 2019, 8:20 PM HADT (05:20 UTC), 35 km (22 mi) below the surface.

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
4.0 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2019-05-23 05:20:48 UTC
Depth
35.0 km (21.7 mi), shallow
Epicenter
52.075° N, 170.755° 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
4.0mb, body-waveUSGS National Earthquake Information CenterPreferred · Reviewed · ±0.058 · 80 stations
4.4ML, 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 4.8 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.06
Depth from
Operator assigned
Station coverage gap
177°
Stations used
81

Nearby

Within 100 km, magnitude 1.5 and up: 12 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 3.7156 km SW of Nikolski, Alaska · 2686 days ago · 19 km deep · 10 km away
  2. 2.771 km SW of Nikolski, Alaska · 2679 days ago · 32 km deep · 89 km away
  3. 3.188 km WSW of Nikolski, Alaska · 2673 days ago · 58 km deep · 77 km away
  4. 3.1146 km SW of Nikolski, Alaska · 2671 days ago · 35 km deep · 15 km away
  5. 2.8160 km WSW of Nikolski, Alaska · 2666 days ago · 35 km deep · 67 km away
  6. 2.597 km SSW of Nikolski, Alaska · 2664 days ago · 26 km deep · 77 km away
  7. 3.9155 km SW of Nikolski, Alaska · 2661 days ago · 40 km deep · 21 km away
  8. 2.8149 km SW of Nikolski, Alaska · 2660 days ago · 10 km deep · 39 km away
  9. 2.771 km SW of Nikolski, Alaska · 2659 days ago · 27 km deep · 93 km away
  10. 2.5163 km SW of Nikolski, Alaska · 2657 days ago · 61 km deep · 28 km away
  11. 2.7137 km SW of Nikolski, Alaska · 2648 days ago · 35 km deep · 49 km away
  12. 3.2141 km W of Nikolski, Alaska · 2636 days ago · 148 km deep · 87 km away

Before

  1. 2.7146 km SSW of Nikolski, Alaska · 2692 days ago · 27 km deep · 83 km away
  2. 2.7126 km SSW of Nikolski, Alaska · 2695 days ago · 10 km deep · 88 km away
  3. 2.9139 km SSW of Nikolski, Alaska · 2699 days ago · 10 km deep · 95 km away
  4. 3.0141 km SW of Nikolski, Alaska · 2708 days ago · 35 km deep · 21 km away
  5. 3.9153 km SW of Nikolski, Alaska · 2710 days ago · 35 km deep · 25 km away

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us60003r0e (also filed as ak0196kky6pe). Read Sun, Oct 4, 2026, 7:58 AM UTC.