QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp000gvm7
USGS usp000gvm7
31 Mar 2009, 16:29
Pagan region, Northern Mariana Islands
A magnitude 5.5 mwc earthquake at 188.5 km depth.
Published location
Where is Pagan 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.
18.313000, 145.716000
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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
usp000gvm7
Coordinates
18.313, 145.716
Network
us
Significance
465