September 23, 1974 Earthquake: Gabon

Name: September 23, 1974 Earthquake: Gabon
Start: 1974-09-23
Location: Gabon

September 23, 1974 · M6.2

A magnitude 6.2 earthquake struck Gabon on September 23, 1974 at 19:28:17 UTC, 33 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: September 23, 1974
Time: 19:28:17 UTC
Place: Gabon
Magnitude: 6.2 (Ms)
Focal depth: 33 km (21 mi)
Tsunami: None recorded
Epicenter: 0.280° S, 12.920° E
Country: Gabon

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.

This is the first instrumentally located epicenter in this region. Approximately 100 km from the nearest previously located event. (reference #1053)

Nothing could be found about the effects of this relatively large earthquake in Gabon, except that the shock was strongly felt at Libreville 390 km from the instrumental epicentre (reference #1214)

Significant earthquakes of 1974 The 1900s Every quake the USGS located in 1974 Recent earthquakes near here This 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 4665.