QQuakeFacts
QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem850077
USGS iscgem850077

10 Feb 1966, 14:21

Mariana Islands region

A magnitude 6.5 mw earthquake at 15 km depth.

Depth15 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated19 December 2025Latest timestamp stored in this record

Published location

Where is Mariana Islands region?

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

20.691000, 146.186000

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Map data © OpenStreetMap contributors

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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Nearby events with a similar magnitude

M 6.5

Pagan region, Northern Mariana Islands

M 6.5

Mariana Islands region

M 6.49

Maug Islands region, Northern Mariana Islands

M 6.57

Volcano Islands, Japan region

M 6.58

Alamagan region, Northern Mariana Islands

M 6.6

Mariana Islands region

Catalog fields and provenance
Event ID
iscgem850077
Coordinates
20.691, 146.186
Network
iscgem
Significance
650