M5.5 earthquake 48 km WNW of Valdez, Alaska
A magnitude 5.5 earthquake struck 48 km WNW of Valdez, Alaska on Sat, Oct 3, 1964, 3:39 AM GMT-10 (13:39 UTC), 25 km (16 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.5 (Mw, moment), moderate
- Magnitude from
- ISC-GEM global catalog
- Local time
- UTC
- 1964-10-03 13:39:38 UTC
- Depth
- 25.0 km (15.5 mi), shallow
- Epicenter
- 61.357° N, 147.122° 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
- ±0.20
- 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 iscgem863233. Read Thu, Oct 1, 2026, 7:52 AM UTC.