Alaska earthquakes

M3.5 earthquake 206 km ESE of Nikolski, Alaska

A magnitude 3.5 earthquake struck 206 km ESE of Nikolski, Alaska on Sat, Feb 27, 2021, 10:30 AM AKST (19:30 UTC), 10 km (6 mi) below the surface.

Unalaska forecastMore 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
3.5 (ml), minor
Local time
UTC
2021-02-27 19:30:07 UTC
Depth
10.0 km (6.2 mi), shallow
Epicenter
51.957° N, 166.289° 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 2.4 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.12
Depth from
Operator assigned
Station coverage gap
223°, poorly surrounded by stations
Stations used
38

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 7 in the 60 days after this one and 13 in the 30 days before it.

After

  1. 2.4136 km S of Unalaska, Alaska · 2026 days ago · 5 km deep · 86 km away
  2. 2.1146 km ESE of Nikolski, Alaska · 2021 days ago · 26 km deep · 72 km away
  3. 2.1184 km SSE of Unalaska, Alaska · 2012 days ago · 12 km deep · 96 km away
  4. 3.0219 km SSE of Unalaska, Alaska · 2010 days ago · 10 km deep · 92 km away
  5. 2.3124 km S of Unalaska, Alaska · 2010 days ago · 5 km deep · 99 km away
  6. 2.6131 km S of Unalaska, Alaska · 1988 days ago · 4 km deep · 85 km away
  7. 3.0142 km ESE of Nikolski, Alaska · 1987 days ago · 6 km deep · 80 km away

Before

  1. 3.4287 km SSE of Unalaska, Alaska · 2035 days ago · 10 km deep · 91 km away
  2. 2.8140 km S of Unalaska, Alaska · 2038 days ago · 10 km deep · 75 km away
  3. 3.1133 km S of Unalaska, Alaska · 2038 days ago · 29 km deep · 87 km away
  4. 2.7Fox Islands, Aleutian Islands, Alaska · 2038 days ago · 20 km deep · 88 km away
  5. 2.1135 km S of Unalaska, Alaska · 2038 days ago · 37 km deep · 83 km away
  6. 4.0186 km SSE of Unalaska, Alaska · 2039 days ago · 10 km deep · 46 km away
  7. 3.2108 km ESE of Nikolski, Alaska · 2052 days ago · 17 km deep · 98 km away
  8. 2.2165 km SSE of Unalaska, Alaska · 2057 days ago · 26 km deep · 58 km away
  9. 3.0205 km SSE of Unalaska, Alaska · 2057 days ago · 10 km deep · 80 km away
  10. 2.6175 km SSE of Nikolski, Alaska · 2059 days ago · 10 km deep · 97 km away
  11. 2.6187 km SSE of Unalaska, Alaska · 2059 days ago · 3 km deep · 83 km away
  12. 2.0134 km S of Unalaska, Alaska · 2060 days ago · 38 km deep · 79 km away
  13. 2.3119 km S of Unalaska, Alaska · 2062 days ago · 19 km deep · 97 km away

Earthquakes todayAlaska earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000de87 (also filed as ak0212o8nuj8). Read Thu, Sep 24, 2026, 1:09 PM UTC.