Alaska earthquakes

M4.9 earthquake 258 km SSE of False Pass, Alaska

A magnitude 4.9 earthquake struck 258 km SSE of False Pass, Alaska on Tue, Nov 3, 2020, 6:27 PM AKST (03:27 UTC), 12 km (7 mi) below the surface.

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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
4.9 (mww), light
Local time
UTC
2020-11-04 03:27:23 UTC
Depth
11.8 km (7.3 mi), shallow
Epicenter
52.580° N, 162.585° 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.

Fault motion and ground failure

How the rock slipped, from the moment tensor, and the USGS estimate of landslides and liquefaction.

Faulting
Oblique normal
Moment magnitude
4.9 Mww
Nodal plane 1
Strike 229°, dip 42°, rake -120°
Nodal plane 2
Strike 88°, dip 55°, rake -66°

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 5.5 km horizontally, 3.2 km in depth
Magnitude uncertainty
±0.05
Depth from
From location
Station coverage gap
57°
Stations used
267

Nearest places

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

Nearby

Within 100 km, magnitude 1.9 and up: 11 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 2.9203 km SE of Akutan, Alaska · 2141 days ago · 10 km deep · 73 km away
  2. 2.6186 km SSE of False Pass, Alaska · 2130 days ago · 22 km deep · 83 km away
  3. 3.0233 km S of False Pass, Alaska · 2128 days ago · 10 km deep · 29 km away
  4. 2.6173 km S of False Pass, Alaska · 2126 days ago · 27 km deep · 91 km away
  5. 2.6226 km SSE of False Pass, Alaska · 2114 days ago · 24 km deep · 71 km away
  6. 3.2219 km SE of Akutan, Alaska · 2113 days ago · 10 km deep · 75 km away
  7. 2.2201 km SE of Akutan, Alaska · 2110 days ago · 26 km deep · 72 km away
  8. 2.3220 km SE of Akutan, Alaska · 2110 days ago · 12 km deep · 89 km away
  9. 2.8227 km SSE of False Pass, Alaska · 2110 days ago · 10 km deep · 62 km away
  10. 3.6241 km SSE of False Pass, Alaska · 2097 days ago · 24 km deep · 39 km away
  11. 2.8238 km SE of Akutan, Alaska · 2093 days ago · 10 km deep · 43 km away

Before

  1. 3.0201 km SSE of False Pass, Alaska · 2151 days ago · 10 km deep · 78 km away
  2. 2.6246 km S of False Pass, Alaska · 2158 days ago · 10 km deep · 23 km away
  3. 2.8238 km S of False Pass, Alaska · 2174 days ago · 10 km deep · 35 km away
  4. 2.3202 km SE of Akutan, Alaska · 2175 days ago · 7 km deep · 98 km away
  5. 3.3236 km SSE of False Pass, Alaska · 2179 days ago · 10 km deep · 33 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event us7000ca41 (also filed as ak020e730dfp, iscgem619518265). Read Thu, Sep 24, 2026, 11:17 AM UTC.