M4.1 earthquake 138 km WSW of Sitka, Alaska
A magnitude 4.1 earthquake struck 138 km WSW of Sitka, Alaska on Wed, Jul 12, 1978, 11:53 AM PDT (18:53 UTC), 38 km (24 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.1 (mb), light
- Local time
- UTC
- 1978-07-12 18:53:35 UTC
- Depth
- 38.0 km (23.6 mi), shallow
- Epicenter
- 56.695° N, 137.504° 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
- CONSTRAINED_BY_DEPTH_PHASES
- Stations used
- 19
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 0 in the 60 days after this one and 0 in the 30 days before it.
None recorded.
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0000vj3. Read Tue, Sep 22, 2026, 8:23 PM UTC.