M4.4 earthquake 156 km WSW of Adak, Alaska
A magnitude 4.4 earthquake struck 156 km WSW of Adak, Alaska on Tue, Jul 11, 1978, 8:30 PM GMT-10 (06:30 UTC), 56 km (35 mi) below the surface.
A larger quake followed: M4.9 124 km WSW of Adak, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.4 (mb), light
- Local time
- UTC
- 1978-07-12 06:30:11 UTC
- Depth
- 56.0 km (34.8 mi), shallow
- Epicenter
- 51.599° N, 178.849° 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
- 22
Nearby
Within 100 km, magnitude 1.5 and up: 2 in the 60 days after this one and 3 in the 30 days before it.
After
- 3.9159 km WSW of Adak, Alaska · 17595 days ago · 68 km deep · 53 km away
- 4.9124 km WSW of Adak, Alaska · 17594 days ago · 54 km deep · 43 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000vhr. Read Tue, Sep 22, 2026, 5:36 AM UTC.