QQuakeFacts
QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp00043g4
USGS usp00043g4

23 Dec 1989, 11:24

242 km N of Saipan, Northern Mariana Islands

A magnitude 6.3 mw earthquake at 161.5 km depth.

Depth161.5 kmPublished hypocentral depth
Tsunami flagNot flaggedUSGS catalog flag, not a current warning
Updated28 April 2022Latest timestamp stored in this record

Published location

Where is 242 km N 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.

17.401000, 145.788000

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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 6.3

63 km NNW of Yigo Village, Guam

M 6.3

266 km NE of Saipan, Northern Mariana Islands

M 6.28

146 km WSW of Merizo Village, Guam

M 6.25

112 km ENE of Saipan, Northern Mariana Islands

M 6.24

40 km E of Yigo Village, Guam

M 6.23

42 km N of Saipan, Northern Mariana Islands

Catalog fields and provenance
Event ID
usp00043g4
Coordinates
17.401, 145.788
Network
us
Significance
611