November 21, 1969 Earthquake: Off NW Coast Sumatera, Indonesia
A magnitude 7.7 earthquake struck Off NW Coast Sumatera, Indonesia on November 21, 1969 at 02:05:35 UTC, 20 km below the surface.
Map
Where it struck, with the other significant earthquakes within 200 km. Circles are sized and colored by magnitude; select one for its page.
The earthquake
- Date
- November 21, 1969
- Time
- 02:05:35 UTC
- Place
- Off NW Coast Sumatera, Indonesia
- Magnitude
- 7.7 (Ms)
- Focal depth
- 20 km (12 mi)
- Tsunami
- None recorded
- Epicenter
- 2.100° N, 94.600° E
- Country
- Indonesia
The toll
The record gives no deaths, injuries or damage for this earthquake.
What the record says
NCEI’s account, from the sources it cites.
1969, November 21, 02:05:35.3 UTC, off west coast of northern Sumatra, 2.1 N, 94.6 E, depth 20 km, magnitude 7.7 MS, not felt. (reference #45)
Other significant earthquakes nearby
Within 200 km, the deadliest first.
More
Significant earthquakes of 1969The 1900sEvery quake the USGS located in 1969Recent earthquakes near hereThis day in weather history
Sources
Significant earthquakes 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 earthquake 4508.