M5.5 earthquake West Chile Rise
A magnitude 5.5 earthquake struck in the West Chile Rise on Sun, Apr 5, 1964, 5:18 AM GMT-6 (11:18 UTC), 14 km (9 mi) below the surface.
A larger quake followed: M5.9 West Chile Rise. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.5 (mw), moderate
- Local time
- UTC
- 1964-04-05 11:18:37 UTC
- Depth
- 14.3 km (8.9 mi), shallow
- Epicenter
- 41.909° S, 83.638° W
- Region
- Chile
- 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
Nearby
Within 100 km, magnitude 2.5 and up: 1 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayChile earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event iscgem868397. Read Tue, Sep 22, 2026, 12:12 PM UTC.