M5.3 earthquake 45 km S of Glacier View, Alaska
A magnitude 5.3 earthquake struck 45 km S of Glacier View, Alaska on Mon, Apr 20, 1964, 5:40 AM GMT-10 (15:40 UTC), 30 km (19 mi) below the surface.
A larger quake followed: M5.9 42 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
- 5.3 (mw), moderate
- Local time
- UTC
- 1964-04-20 15:40:28 UTC
- Depth
- 30.3 km (18.8 mi), shallow
- Epicenter
- 61.409° N, 147.511° 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
- ±0.29
- Depth from
- From location
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.3 and up: 1 in the 60 days after this one and 5 in the 30 days before it.
After
Before
- 6.437 km SSE of Glacier View, Alaska · 22800 days ago · 30 km deep · 11 km away
- 5.547 km SSE of Glacier View, Alaska · 22806 days ago · 27 km deep · 11 km away
- 6.423 km S of Glacier View, Alaska · 22817 days ago · 39 km deep · 23 km away
- 5.148 km NNW of Valdez, Alaska · 22823 days ago · 45 km deep · 48 km away
- 9.2The 1964 Prince William Sound, Alaska Earthquake · 22823 days ago · 25 km deep · 56 km away · felt by 459
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem868958. Read Tue, Sep 22, 2026, 10:58 AM UTC.