QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/usp0003533
USGS usp0003533
18 May 1987, 02:53
45 km SSE of Koh?ma, India
A magnitude 6.3 mw earthquake at 49.5 km depth.
Published location
Where is 45 km SSE of Koh?ma, India?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
25.271000, 94.202000
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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
usp0003533
Coordinates
25.271, 94.202
Network
us
Significance
611