QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/us1000i1xf
USGS us1000i1xf
4 Dec 2018, 14:22
Maug Islands region, Northern Mariana Islands
A magnitude 5.1 mb earthquake at 10 km depth.
Published location
Where is Maug Islands region, 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.
19.546600, 144.556700
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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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Catalog fields and provenance
Event ID
us1000i1xf
Coordinates
19.5466, 144.5567
Network
us
Significance
400