M3.4 earthquake 9 km SSW of Happy Valley, Alaska
A magnitude 3.4 earthquake struck 9 km SSW of Happy Valley, Alaska on Sat, Jun 27, 1981, 5:37 PM GMT-9 (02:37 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.2 63 km E of Port Alsworth, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.4 (ML, local (Richter)), minor
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1981-06-28 02:37:46 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 59.869° N, 151.786° 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.
- Depth from
- OPERATOR_ASSIGNED
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 1 in the 30 days before it.
After
- 4.435 km W of Nanwalek, Alaska · 16527 days ago · 152 km deep · 66 km away
- 3.84 km WSW of Salamatof, Alaska · 16519 days ago · 80 km deep · 84 km away
- 3.49 km NW of Nanwalek, Alaska · 16516 days ago · 28 km deep · 52 km away
- 4.521 km WSW of Nanwalek, Alaska · 16509 days ago · 84 km deep · 71 km away
- 5.263 km E of Port Alsworth, Alaska · 16498 days ago · 114 km deep · 83 km away
- 3.025 km WSW of Anchor Point, Alaska · 16472 days ago · 33 km deep · 32 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001ecm. Read Thu, Oct 1, 2026, 3:21 PM UTC.