Alaska earthquakes

M2.6 earthquake 187 km SSE of Unalaska, Alaska

A magnitude 2.6 earthquake struck 187 km SSE of Unalaska, Alaska on Tue, Feb 2, 2021, 6:47 PM AKST (03:47 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M3.0 205 km SSE of Unalaska, Alaska. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
2.6 (ml), micro
Local time
UTC
2021-02-03 03:47:28 UTC
Depth
3.0 km (1.8 mi), shallow
Epicenter
52.372° N, 165.275° W
Region
Alaska
Tsunami flag
No
Status
Reviewed by a seismologist

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 7.9 km horizontally, 11.2 km in depth
Magnitude uncertainty
±0.15
Depth from
From location
Station coverage gap
295°, poorly surrounded by stations
Stations used
18

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 10 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 3.0205 km SSE of Unalaska, Alaska · 2057 days ago · 10 km deep · 18 km away
  2. 2.2165 km SSE of Unalaska, Alaska · 2057 days ago · 26 km deep · 45 km away
  3. 3.0135 km SSE of Unalaska, Alaska · 2043 days ago · 10 km deep · 54 km away
  4. 4.0186 km SSE of Unalaska, Alaska · 2038 days ago · 10 km deep · 39 km away
  5. 2.8140 km S of Unalaska, Alaska · 2038 days ago · 10 km deep · 91 km away
  6. 3.5206 km ESE of Nikolski, Alaska · 2035 days ago · 10 km deep · 83 km away
  7. 2.7197 km SSE of Akutan, Alaska · 2016 days ago · 10 km deep · 46 km away
  8. 2.8south of Alaska · 2016 days ago · 10 km deep · 58 km away
  9. 2.1184 km SSE of Unalaska, Alaska · 2012 days ago · 12 km deep · 13 km away
  10. 3.0219 km SSE of Unalaska, Alaska · 2010 days ago · 10 km deep · 33 km away

Before

  1. 2.0134 km S of Unalaska, Alaska · 2059 days ago · 38 km deep · 78 km away
  2. 3.0158 km SSE of Akutan, Alaska · 2064 days ago · 27 km deep · 54 km away
  3. 3.6184 km SSE of Akutan, Alaska · 2080 days ago · 10 km deep · 47 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us6000dhwh (also filed as ak0211kac8ki). Read Thu, Sep 24, 2026, 7:09 AM UTC.