M4.3 earthquake 58 km WNW of Happy Valley, Alaska
A magnitude 4.3 earthquake struck 58 km WNW of Happy Valley, Alaska on Sat, Apr 17, 1976, 9:22 PM GMT-10 (07:22 UTC), 100 km (62 mi) below the surface.
A larger quake followed: M4.7 58 km E of Pedro Bay, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.3 (mb), light
- Local time
- UTC
- 1976-04-18 07:22:08 UTC
- Depth
- 100.0 km (62.1 mi), intermediate-depth
- Epicenter
- 60.087° N, 152.736° 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.
- Stations used
- 19
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 2 in the 30 days before it.
After
- 4.758 km E of Pedro Bay, Alaska · 18398 days ago · 38 km deep · 31 km away
- 4.467 km SE of Pedro Bay, Alaska · 18367 days ago · 103 km deep · 92 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000fxt. Read Tue, Sep 22, 2026, 10:57 AM UTC.