M6.1 earthquake 63 km SSW of Unalaska, Alaska
A magnitude 6.1 earthquake struck 63 km SSW of Unalaska, Alaska on Mon, Jun 12, 1972, 10:47 AM GMT-9 (19:47 UTC), 36 km (23 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 6.1 (mw), strong
- Local time
- UTC
- 1972-06-12 19:47:38 UTC
- Depth
- 36.3 km (22.6 mi), shallow
- Epicenter
- 53.334° N, 166.857° W
- Region
- Alaska
- Strongest shaking
- VI, strong shaking
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Shaking
The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.
- Strongest estimated
- VI, strong shaking
- Peak ground acceleration
- 13.5% of gravity
- Peak ground velocity
- 2.3 cm/s
- Map
- Automatic
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Magnitude uncertainty
- ±0.27
- Depth from
- From location
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.5 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 iscgem772465 (also filed as ushis3194). Read Tue, Sep 22, 2026, 8:56 PM UTC.