M4.5 earthquake 21 km WSW of Nanwalek, Alaska
A magnitude 4.5 earthquake struck 21 km WSW of Nanwalek, Alaska on Mon, Jul 20, 1981, 6:17 PM GMT-9 (03:17 UTC), 84 km (52 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.5 (mb), light
- Local time
- UTC
- 1981-07-21 03:17:20 UTC
- Depth
- 84.4 km (52.4 mi), intermediate-depth
- Epicenter
- 59.275° N, 152.271° 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: 2 in the 60 days after this one and 4 in the 30 days before it.
After
- 3.185 km NNW of Aleneva, Alaska · 16493 days ago · 33 km deep · 84 km away
- 3.025 km WSW of Anchor Point, Alaska · 16463 days ago · 33 km deep · 47 km away
Before
- 3.49 km NW of Nanwalek, Alaska · 16507 days ago · 28 km deep · 21 km away
- 4.435 km W of Nanwalek, Alaska · 16518 days ago · 152 km deep · 21 km away
- 3.49 km SSW of Happy Valley, Alaska · 16522 days ago · 33 km deep · 71 km away
- 4.772 km SE of Pedro Bay, Alaska · 16525 days ago · 111 km deep · 55 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001euc. Read Tue, Sep 22, 2026, 8:04 AM UTC.