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M4.5 earthquake strikes Izu Islands, Japan; no tsunami threat reported

A magnitude 4.5 earthquake occurred at 15:56 UTC on 2026-09-21 in the Izu Islands region, Japan, at a depth of 10 km. The event is moderate and routine for this seismically active area; no damage or tsunami warnings have been reported. Its significance is low given the magnitude and location.

USGS Earthquakes M4.5+1 day agoJPCredibility 10%View source

Score Breakdown

Mosaic Score2.0
Confidence0.9
Significance0.1
Source credibility0.1

Intelligence Tags

Locations

Izu Islands

Entities

country
Source

Related signals

8 found