M4.9 earthquake 152 km S of False Pass, Alaska
A magnitude 4.9 earthquake struck 152 km S of False Pass, Alaska on Sat, Sep 1, 1984, 2:55 PM AKDT (22:55 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M5.0 141 km S of False Pass, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.9 (mb), light
- Local time
- UTC
- 1984-09-01 22:55:51 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 53.488° N, 163.574° 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 1.9 and up: 4 in the 60 days after this one and 0 in the 30 days before it.
After
- 4.7164 km S of False Pass, Alaska · 15336 days ago · 33 km deep · 12 km away
- 4.671 km S of False Pass, Alaska · 15330 days ago · 33 km deep · 82 km away
- 5.0141 km S of False Pass, Alaska · 15319 days ago · 33 km deep · 11 km away
- 4.8135 km S of False Pass, Alaska · 15319 days ago · 33 km deep · 17 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp00026yc. Read Tue, Sep 22, 2026, 4:25 PM UTC.