M5.1 earthquake 48 km NNW of Valdez, Alaska
A magnitude 5.1 earthquake struck 48 km NNW of Valdez, Alaska on Sat, Mar 28, 1964, 9:21 AM GMT-10 (19:21 UTC), 45 km (28 mi) below the surface.
A larger quake followed: M6.4 23 km S of Glacier View, Alaska. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.1 (mw), moderate
- Local time
- UTC
- 1964-03-28 19:21:40 UTC
- Depth
- 44.8 km (27.8 mi), shallow
- Epicenter
- 61.540° N, 146.647° 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 2.1 and up: 5 in the 60 days after this one and 1 in the 30 days before it.
After
- 6.423 km S of Glacier View, Alaska · 22817 days ago · 39 km deep · 54 km away
- 5.547 km SSE of Glacier View, Alaska · 22806 days ago · 27 km deep · 37 km away
- 6.437 km SSE of Glacier View, Alaska · 22800 days ago · 30 km deep · 40 km away
- 5.345 km S of Glacier View, Alaska · 22800 days ago · 30 km deep · 48 km away
- 5.942 km S of Glacier View, Alaska · 22799 days ago · 36 km deep · 52 km away
Before
Earthquakes todayAlaska earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem869981. Read Tue, Sep 22, 2026, 12:13 PM UTC.