QQuakeFacts
USGS iscgem849400

20 Mar 1966, 01:42

22 km N of Margherita, Uganda

A magnitude 6.6 mw earthquake at 29.9 km depth.

Depth29.9 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated19 December 2025Latest timestamp stored in this record

Published location

Where is 22 km N of Margherita, Uganda?

This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.

0.743000, 29.840000

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What the numbers mean

Magnitude measures event size; depth locates the source below the surface. Neither value alone establishes local damage or personal risk.

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Catalog fields and provenance
Event ID
iscgem849400
Coordinates
0.743, 29.84
Network
iscgem
Significance
670