QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usc000lmmu
USGS usc000lmmu
18 Dec 2013, 00:33
Mariana Islands region
A magnitude 5 mb earthquake at 9.8 km depth.
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.
20.801500, 146.757600
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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
usc000lmmu
Coordinates
20.8015, 146.7576
Network
us
Significance
385