Alaska earthquakes

M2.8 earthquake 221 km SE of Chignik, Alaska

A magnitude 2.8 earthquake struck 221 km SE of Chignik, Alaska on Mon, Jul 24, 2023, 10:47 AM AKDT (18:47 UTC), 11 km (7 mi) below the surface.

A larger quake followed: M4.7 south of 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
2.8 (ML, local (Richter)), micro
Magnitude from
Alaska Earthquake Center
Local time
UTC
2023-07-24 18:47:43 UTC
Depth
10.5 km (6.5 mi), shallow
Epicenter
55.033° N, 155.691° 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
2.8ML, local (Richter)Alaska Earthquake CenterPreferred · Preliminary
2.5ML, local (Richter)USGS National Earthquake Information CenterReviewed · ±0.115 · 10 stations

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Stations used
30

Nearby

Within 100 km, magnitude 1.5 and up: 13 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 2.8252 km S of Akhiok, Alaska · 1155 days ago · 10 km deep · 82 km away
  2. 2.9167 km SSE of Chignik, Alaska · 1155 days ago · 24 km deep · 78 km away
  3. 3.0south of Alaska · 1153 days ago · 19 km deep · 67 km away
  4. 3.0170 km SE of Chignik, Alaska · 1146 days ago · 27 km deep · 53 km away
  5. 2.5197 km SE of Perryville, Alaska · 1138 days ago · 23 km deep · 91 km away
  6. 2.6165 km SE of Chignik, Alaska · 1135 days ago · 3 km deep · 64 km away
  7. 2.6154 km SSW of Akhiok, Alaska · 1130 days ago · 14 km deep · 80 km away
  8. 4.7south of Alaska · 1115 days ago · 5 km deep · 44 km away
  9. 2.8209 km SE of Chignik, Alaska · 1115 days ago · 4 km deep · 45 km away
  10. 3.4194 km SE of Chignik, Alaska · 1115 days ago · 0 km deep · 43 km away · felt by 1
  11. 2.0155 km ESE of Chignik, Alaska · 1112 days ago · 10 km deep · 96 km away
  12. 2.7south of Alaska · 1109 days ago · 4 km deep · 90 km away
  13. 3.7201 km SE of Chignik, Alaska · 1105 days ago · 24 km deep · 39 km away

Before

  1. 2.6176 km ESE of Chignik, Alaska · 1166 days ago · 7 km deep · 59 km away
  2. 4.1202 km SE of Chignik, Alaska · 1167 days ago · 10 km deep · 19 km away · felt by 1
  3. 3.5205 km SE of Perryville, Alaska · 1171 days ago · 12 km deep · 86 km away
  4. 3.4198 km SE of Perryville, Alaska · 1189 days ago · 7 km deep · 86 km away
  5. 2.6150 km SE of Chignik, Alaska · 1193 days ago · 4 km deep · 74 km away

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ak0239fc6467 (also filed as us6000kx5g). Read Thu, Oct 1, 2026, 1:04 PM UTC.