Alaska earthquakes

M4.5 earthquake 73 km SE of Atka, Alaska

A magnitude 4.5 earthquake struck 73 km SE of Atka, Alaska on Thu, Feb 21, 2019, 7:13 AM HAST (17:13 UTC), 45 km (28 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
4.5 (mb, body-wave), light
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2019-02-21 17:13:46 UTC
Depth
45.2 km (28.1 mi), shallow
Epicenter
51.822° N, 173.318° 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
4.5mb, body-waveUSGS National Earthquake Information CenterPreferred · Reviewed · ±0.037 · 212 stations
4.2ML, 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 4.2 km horizontally, 7.5 km in depth
Magnitude uncertainty
±0.04
Depth from
From location
Station coverage gap
179°
Stations used
95

Nearby

Within 100 km, magnitude 1.5 and up: 10 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 4.0104 km SE of Atka, Alaska · 2780 days ago · 33 km deep · 40 km away
  2. 3.478 km SE of Atka, Alaska · 2771 days ago · 35 km deep · 15 km away
  3. 2.358 km SSW of Atka, Alaska · 2770 days ago · 19 km deep · 77 km away
  4. 4.084 km SE of Atka, Alaska · 2756 days ago · 53 km deep · 11 km away
  5. 3.2123 km S of Atka, Alaska · 2749 days ago · 10 km deep · 96 km away
  6. 3.372 km SE of Atka, Alaska · 2745 days ago · 27 km deep · 7 km away
  7. 2.544 km SW of Atka, Alaska · 2733 days ago · 70 km deep · 91 km away
  8. 3.088 km SE of Atka, Alaska · 2729 days ago · 38 km deep · 16 km away
  9. 2.885 km ESE of Atka, Alaska · 2725 days ago · 33 km deep · 12 km away
  10. 3.174 km ESE of Atka, Alaska · 2720 days ago · 27 km deep · 10 km away

Before

  1. 2.050 km S of Atka, Alaska · 2784 days ago · 0 km deep · 55 km away
  2. 3.164 km SE of Atka, Alaska · 2785 days ago · 35 km deep · 15 km away
  3. 4.137 km S of Atka, Alaska · 2787 days ago · 67 km deep · 55 km away
  4. 4.125 km SSW of Atka, Alaska · 2789 days ago · 4 km deep · 75 km away
  5. 2.6Andreanof Islands, Aleutian Islands, Alaska · 2789 days ago · 7 km deep · 88 km away
  6. 2.796 km S of Atka, Alaska · 2800 days ago · 35 km deep · 91 km away
  7. 2.6Andreanof Islands, Aleutian Islands, Alaska · 2802 days ago · 11 km deep · 99 km away
  8. 2.66 km NNW of Atka, Alaska · 2803 days ago · 143 km deep · 78 km away

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us2000jl5a (also filed as ak0192ea5b0t). Read Fri, Oct 2, 2026, 5:59 AM UTC.