QuakeFactsEvidence report · prepared 2 September 2026https://quakes99.com/entity/iscgem16958012
USGS iscgem16958012
9 Feb 1909, 11:24
26 km ENE of Koyulhisar, Turkey
A magnitude 6.3 mw earthquake at 15 km depth.
Published location
Where is 26 km ENE of Koyulhisar, Turkey?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
40.406000, 38.098000
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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
iscgem16958012
Coordinates
40.406, 38.098
Network
iscgem
Significance
613