M3.0 earthquake 31 km E of Old Harbor, Alaska
A magnitude 3.0 earthquake struck 31 km E of Old Harbor, Alaska on Wed, Jul 19, 1978, 9:53 AM GMT-9 (18:53 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M4.6 93 km SSE of Old Harbor, 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, local (Richter)), minor
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1978-07-19 18:53:32 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 57.167° N, 152.787° 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
- 9
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 2 in the 30 days before it.
After
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000vn3. Read Thu, Oct 1, 2026, 6:15 PM UTC.