M6.6 · 227 km ESE of Ishinomaki, Japan
Monday, March 22, 1909
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8:03 PM – 8:13 PM
227 km ESE of Ishinomaki, Japan
Magnitude 6.6 (mw), 15 km deep, 227 km ESE of Ishinomaki, Japan — 37.53°N, 143.64°E. March 22, 1909 at 20:03 UTC. https://earthquake.usgs.gov/earthquakes/eventpage/iscgemsup602790117 Data: US Geological Survey (public domain).
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