QQuakeFacts
QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/us1000axp3
USGS us1000axp3

27 Oct 2017, 18:52

171 km NNE of Saipan, Northern Mariana Islands

A magnitude 5 mb earthquake at 90.8 km depth.

Depth90.8 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated17 January 2018Latest timestamp stored in this record

Published location

Where is 171 km NNE of Saipan, Northern Mariana Islands?

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

16.716200, 146.122500

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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

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Catalog fields and provenance
Event ID
us1000axp3
Coordinates
16.7162, 146.1225
Network
us
Significance
385