M3.0 earthquake 42 km WSW of Tonsina, Alaska
A magnitude 3.0 earthquake struck 42 km WSW of Tonsina, Alaska on Sun, Jul 11, 1982, 2:42 PM GMT-9 (23:42 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M3.2 37 km WNW of Valdez, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.0 (ml), minor
- Local time
- UTC
- 1982-07-11 23:42:12 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 61.553° N, 145.937° 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: 1 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001ncd. Read Wed, Sep 23, 2026, 1:31 PM UTC.