Alaska earthquakes

M2.6 earthquake 261 km SW of Adak, Alaska

A magnitude 2.6 earthquake struck 261 km SW of Adak, Alaska on Wed, Sep 4, 2019, 10:42 AM GMT-12 (22:42 UTC), 10 km (6 mi) below the surface.

A larger quake followed: M4.3 241 km SSW of Adak, 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
2.6 (ML, local (Richter)), micro
Magnitude from
USGS National Earthquake Information Center
Local time
UTC
2019-09-04 22:42:20 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
50.194° N, 179.235° 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
2.6ML, local (Richter)USGS National Earthquake Information CenterPreferred · Reviewed
2.6ML, 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 3.3 km horizontally, 2.0 km in depth
Depth from
Operator assigned
Station coverage gap
266°, poorly surrounded by stations
Stations used
30

Nearby

Within 100 km, magnitude 1.5 and up: 8 in the 60 days after this one and 4 in the 30 days before it.

After

  1. 3.1240 km WSW of Adak, Alaska · 2582 days ago · 10 km deep · 97 km away
  2. 3.0245 km SSW of Adak, Alaska · 2582 days ago · 35 km deep · 86 km away
  3. 2.1Rat Islands, Aleutian Islands, Alaska · 2579 days ago · 27 km deep · 76 km away
  4. 2.0208 km WSW of Adak, Alaska · 2568 days ago · 6 km deep · 89 km away
  5. 2.1212 km SSW of Adak, Alaska · 2554 days ago · 37 km deep · 68 km away
  6. 2.5Rat Islands, Aleutian Islands, Alaska · 2549 days ago · 10 km deep · 97 km away
  7. 4.3241 km SSW of Adak, Alaska · 2545 days ago · 10 km deep · 74 km away
  8. 3.0Rat Islands, Aleutian Islands, Alaska · 2525 days ago · 10 km deep · 71 km away

Before

  1. 2.5270 km SSW of Adak, Alaska · 2595 days ago · 10 km deep · 53 km away
  2. 1.9281 km SW of Adak, Alaska · 2595 days ago · 34 km deep · 55 km away
  3. 2.4277 km SW of Adak, Alaska · 2597 days ago · 34 km deep · 47 km away
  4. 2.3286 km SW of Adak, Alaska · 2597 days ago · 12 km deep · 37 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us70005mye (also filed as ak019bcv3b6g). Read Fri, Oct 2, 2026, 2:44 AM UTC.