M3.0 earthquake Central Alaska
A magnitude 3.0 earthquake struck in Central Alaska on Wed, Apr 18, 1973, 1:20 AM GMT-10 (11:20 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M3.5 68 km N of Petersville, 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
- 1973-04-18 11:20:43 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 62.458° N, 152.009° 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
- Stations used
- 12
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 1 in the 30 days before it.
After
- 3.568 km N of Petersville, Alaska · 19496 days ago · 125 km deep · 99 km away
- 4.764 km N of Petersville, Alaska · 19486 days ago · 128 km deep · 87 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00001eq. Read Wed, Sep 23, 2026, 9:47 PM UTC.