October 11, 1940 Tsunami: Southern Chile
A tsunami caused by a magnitude 7 earthquake began at Southern Chile on October 11, 1940 at 18:41:13 UTC.
Where the waves reached
The source of the tsunami. No runup with a place is recorded for it.
- Under 1 m
- 1 to 3 m
- 3 to 10 m
- 10 to 30 m
- 30 m and more
- Height not recorded
The tsunami
- Date
- October 11, 1940, 18:41:13 UTC
- Source
- Southern Chile
- Cause
- Earthquake
- Earthquake
- Magnitude 7, 33 km deep
- Runups recorded
- 0
- Waters
- Ocean
- How certain
- Very doubtful tsunami
- Source location
- 41.500° S, 74.500° W
The toll
The record gives no deaths, injuries or damage for this tsunami.
What the record says
NCEI’s account, from the sources it cites.
October 11, 1940, 18:41 UTC, 41.5 S, 74.5 W, magnitude 7.0 MS, depth 33 km. (reference #164)
October 11, 1940, 18:41 UTC, 41.5 S, 74.5 W, magnitude 7.0 MS, depth 33 km, Southern Chile. (reference #164)
More
Every tsunami in 1940The 1900sTsunamis of ChileThe earthquakeThis day in weather historyAlerts in force
Sources
Tsunami events and runups from NOAA’s National Centers for Environmental Information, Global Historical Hazard Database, cited as NCEI/WDS, doi:10.7289/V5PN93H7. Public domain. Read 2026-09-24. NCEI tsunami event 1743.