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KNMI Issues Code Yellow for Dense Fog Across Several Dutch Provinces

The warning signals visibility may fall below 200 metres, posing a hazard to drivers who must follow fog-lamp rules.

Overview

  • The KNMI issued code yellow for local dense fog affecting multiple provinces, with reports published on Tuesday indicating visibility can drop below 200 metres and hinder traffic.
  • Warnings cover Zuid-Holland, Zeeland, Noord-Brabant and Friesland and were later extended to include Utrecht in some notices, with advisories generally in force until about 10:00 and some starting the previous evening.
  • Drivers are advised to slow down, leave extra space from other road users and use front fog lamps when visibility is under 200 metres while reserving rear fog lamps for visibility under 50 metres.
  • Forecasters expect the fog to lift in the second half of the morning, after which milder, mostly sunny autumn conditions are forecast with highs near 20–21°C.
  • Local reports note this follows several misty days typical for autumn, especially near water, and the main impact is short-term disruption to road safety rather than prolonged regional closures.