First published · Last updated
気象特別警報・警報・注意報
JMA issues advisories for dense fog (濃霧注意報) affecting northern and central parts of Nagano Prefecture, listing Oomachi, Saku, Komoro and several subregions; headline: 北部、中部では、濃霧による視程障害に注意してください。
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
- 8/10
- Geographic reach
- 3/10
- Global importance
- 2/10
- Impact magnitude
- 3/10
- Positivity
- 2/10
- Urgency
- 7/10
Why it matters
The Japan Meteorological Agency warns of reduced visibility from dense fog in northern and central Nagano Prefecture and explicitly advises caution for visibility obstruction in the named areas.

