RiskEvents
ClosedLow impactAI Generated

M6.0 Earthquake Near Iwo Jima Felt at Ogasawara Islands, Japan – No Tsunami Warning – May 2026

Occurred 15 May 2026·Detected 14 May 2026·
🇯🇵 Near Iwo Jima (硫黄島), Ogasawara Islands, Tokyo, Japan — western Pacific Ocean1 reportEnded 29 May 2026
Natural CatastrophePropertyMarine CargoEnergyCasualty & LiabilityReinsurance

A magnitude 6.0 earthquake occurred near Iwo Jima (硫黄島近海) at approximately 00:34 JST on 15 May 2026, with a shallow focal depth of 10 kilometres. Shaking of seismic intensity 3 (shindo 3) was recorded at Hahajima in the Ogasawara Islands, with intensity 2 recorded at Chichijima. Japanese authorities confirmed there is no tsunami risk from this event.

AI-generated from linked source reports. See our correction policy.

Impact verdict

Low impact. The Ogasawara Islands are a remote, sparsely populated archipelago. Shindo 3 intensity is felt by most people indoors but rarely causes structural damage. No tsunami warning was issued, limiting marine and coastal exposure.

View assessment methodology

How we grade what we know -- Known · Reported · Uncertain. Methodology →

Intelligence ledger

Each line expands in place to its underlying sourced claim.

Known7 lines

Earthquake magnitude estimated at M6.0▾
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Focal depth of 10 kilometres (shallow)▾
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Epicentre near Iwo Jima (硫黄島近海)▾
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Seismic intensity 3 (shindo 3) recorded at Hahajima, Ogasawara Islands, Tokyo▾
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Seismic intensity 2 recorded at Chichijima, Ogasawara Islands▾
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No tsunami warning issued▾
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Event occurred at approximately 00:34 JST on 15 May 2026▾
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Reported1 line

NHK is the reporting source; no damage reports included in the article▾
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No separate sourced-claim record is available for this line yet.

Uncertain2 lines

Extent of any structural damage at Hahajima or Chichijima not yet known▾
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No separate sourced-claim record is available for this line yet.
Whether aftershocks are expected has not been reported▾
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No separate sourced-claim record is available for this line yet.

Geographic Zone Matches

1 active match

  • Pacific Ring of Fire
    Rule-basedConfidence 100%

Geographic zone matches are RiskEvents spatial/analytical indicators, not coverage determinations or Lloyd's official classifications.

Affected countries

🇯🇵 Japan

Timeline

Status Change2 Jun 2026, 13:05

Lifecycle changed

monitoring → closed

Closure2 Jun 2026, 13:05

Event Closed

auto_closed_monitoring_timeout

Status Change29 May 2026, 05:30

Status changed to monitoring

Auto-transitioned: no updates for 6 hours

active → monitoring

Status Change28 May 2026, 22:36

Status changed to active

remediation: existing authoritative signal

signal → active

Initial Detection14 May 2026, 17:10

Initial Detection

A magnitude 6.0 earthquake occurred near Iwo Jima (硫黄島近海) at approximately 00:34 JST on 15 May 2026, with a shallow focal depth of 10 kilometres. Shaking of seismic intensity 3 (shindo 3) was recorded at Hahajima in the Ogasawara Islands, with intensity 2 recorded at Chichijima. Japanese authorities confirmed there is no tsunami risk from this event.

震源地は硫黄島近海で、震源の深さは10キロ、地震の規模を示すマグニチュードは6.0と推定されています。この地震による津波の心配はありません。

Source: NHK News (Japanese) (Mainstream Media) · View source

Lloyd's classifications

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