First published 10/4/2026, 4:51:15 AM · Last updated 10/4/2026, 4:51:15 AM

JMA High wave warning for Japan

A Japan Meteorological Agency high-wave warning was issued for the Ogasawara Islands, with wave advisories listed for areas of the Izu Islands. The source was published on October 4, 2026.

Illustrative image: The Japan Meteorological Agency released the first images from the Himawari 8 satellite on 18 December 2014 at 11:40 Japan Standard Time, including this true-color composite image of the Earth. — Himawari 8 satellite operated by the Japan Meteorological Agency/Wikimedia Commons, CC BY 4.0

Categories: severe-weather-and-natural-disasters

Generated scores

Scores are based on the cited reporting and use a 1–10 scale. Read the methodology.

Confidence: 7/10How certain the assessment is based on the clarity and evidence in the cited reporting.
Geographic reach: 3/10How widely the event reaches, from a local area (1) to worldwide impact (10).
Global importance: 2/10The event's broader significance, from limited importance (1) to major global importance (10).
Impact magnitude: 2/10The scale or severity of the real-world impact, from minor (1) to extreme (10).
Positivity: 2/10How harmful or beneficial the event is, from strongly harmful (1) to strongly positive (10).
Urgency: 5/10How time-sensitive the event is, from low urgency (1) to immediate attention needed (10).

Why it matters

The source calls for caution about high waves in the Ogasawara Islands.

Sources

JMA High wave warning for JapanJapan Meteorological Agency (JMA) Usage terms

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