Data last collected:
QuakeFactsEvidence report · prepared 23 October 2026https://quakes99.com/entity/usc000ttnw
USGS usc000ttnw
27 Feb 2015, 16:24
187 km N of Saipan, Northern Mariana Islands
A magnitude 5.7 mww earthquake at 20.1 km depth.
Published location
Where is 187 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.
16.904100, 145.830300
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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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Use local emergency authorities and the live USGS event page. This historical evidence page is not an alert service.
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Nearby events with a similar magnitude
Catalog fields and provenance
Event ID
usc000ttnw
Coordinates
16.9041, 145.8303
Network
us
Significance
500
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Questions this evidence can answer
01What exactly is this record?
Use the name, place, date and identifiers above to confirm that you have the right 187 km N of Saipan, Northern Mariana Islands earthquake: magnitude 5.7 and depth | QuakeFacts record.
02What does the evidence establish?
Read the reported values with their units, coverage dates and source notes. Keep observed facts separate from estimates or interpretation.
03What should I verify next?
Follow the primary-source links and check the limitations before using this evidence for a decision, comparison or citation.
A closer look at 187 km N of Saipan, Northern Mariana Islands
Depth in another unit
The recorded event depth of 20.1 km is approximately 12.49 miles below the source reference surface. Depth alone does not describe damage or local hazard.
Interpreting the recorded coordinates
The published position for 187 km N of Saipan, Northern Mariana Islands is 16.9041° north and 145.8303° east. This expresses the source coordinates in hemispheres; it does not establish an entrance, public access or a safe route.