First published 9/22/2026, 7:25:15 AM · Last updated 9/22/2026, 7:25:15 AM

気象警報・注意報（Ｒ０６）（その他注意報）

The Japan Meteorological Agency (JMA) issued dense fog advisories (濃霧注意報) for Nagano Prefecture and parts of the Chubu region, listing Nagano Prefecture; Chubu; Saku area; Komoro City; Saku City; Koumi Town; Kawakami Village; and Minamimaki Village. JMA headline: 中部では、濃霧による視程障害に注意してください (In Chubu, be cautious of visibility impairment due to dense fog).

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: 8/10How 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: 3/10The 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: 7/10How time-sensitive the event is, from low urgency (1) to immediate attention needed (10).

Why it matters

The JMA advisory warns of visibility impairment from dense fog across parts of Nagano Prefecture and the Chubu region and explicitly advises caution.

Location

Sources

気象警報・注意報（Ｒ０６）（その他注意報）

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