M6.4 earthquake 138 km SE of Halibut Cove, Alaska
A magnitude 6.4 earthquake struck 138 km SE of Halibut Cove, Alaska on Fri, Mar 27, 1964, 9:10 PM GMT-10 (07:10 UTC), 20 km (12 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 6.4 (mw), strong
- Local time
- UTC
- 1964-03-28 07:10:24 UTC
- Depth
- 20.0 km (12.4 mi), shallow
- Epicenter
- 58.784° N, 149.391° 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.
- Magnitude uncertainty
- ±0.47
- 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: 4 in the 60 days after this one and 2 in the 30 days before it.
After
- 5.5122 km ENE of Kodiak, Alaska · 22822 days ago · 23 km deep · 94 km away
- 5.1103 km S of Chenega, Alaska · 22822 days ago · 26 km deep · 96 km away
- 5.6141 km SE of Halibut Cove, Alaska · 22821 days ago · 20 km deep · 20 km away
- 5.7125 km SE of Halibut Cove, Alaska · 22818 days ago · 22 km deep · 17 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem869836 (also filed as ushis2651). Read Tue, Sep 22, 2026, 5:24 PM UTC.