Alaska earthquakes

M4.2 earthquake 47 km W of Nanwalek, Alaska

A magnitude 4.2 earthquake struck 47 km W of Nanwalek, Alaska on Sat, May 28, 1983, 10:35 AM GMT-9 (19:35 UTC), 108 km (67 mi) below the surface.

A larger quake followed: M4.7 50 km WSW of Nanwalek, 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
4.2 (mb), light
Local time
UTC
1983-05-28 19:35:53 UTC
Depth
108.0 km (67.1 mi), intermediate-depth
Epicenter
59.422° N, 152.746° 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.

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 6 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 3.730 km WNW of Anchor Point, Alaska · 15818 days ago · 77 km deep · 62 km away
  2. 4.750 km WSW of Nanwalek, Alaska · 15811 days ago · 84 km deep · 21 km away
  3. 4.818 km NW of Ninilchik, Alaska · 15804 days ago · 92 km deep · 99 km away
  4. 3.760 km NNW of Aleneva, Alaska · 15801 days ago · 65 km deep · 95 km away
  5. 4.259 km WNW of Anchor Point, Alaska · 15778 days ago · 107 km deep · 56 km away
  6. 3.347 km SE of Port Graham, Alaska · 15764 days ago · 33 km deep · 94 km away

Before

  1. 3.947 km E of Pedro Bay, Alaska · 15836 days ago · 113 km deep · 58 km away
  2. 4.073 km SE of Pope-Vannoy Landing, Alaska · 15841 days ago · 117 km deep · 62 km away
  3. 4.066 km SE of Pedro Bay, Alaska · 15849 days ago · 112 km deep · 37 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event usp0001vrk. Read Tue, Sep 22, 2026, 10:55 AM UTC.